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From: Stewart Bryant <stewart.bryant@gmail.com>
To: 5gangip@ietf.org, detnet@ietf.org, nfvrg@irtf.org, draft-galis-anima-autonomic-slice-networking@tools.ietf.org, draft-vonhugo-5gangip-ip-issues@tools.ietf.org, draft-xuan-dmm-multicast-mobility-slicing@tools.ietf.org, draft-ietf-teas-actn-framework@tools.ietf.org
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Date: Tue, 1 Nov 2016 15:14:20 +0000
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Cc: "Dongjie \(Jimmy\)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>
Subject: [Detnet] Network Slicing - a suggestion that we meet to discuss in Seoul
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Hi,

We were trying to pull together a problem statement for network slicing
in a 5G context to understand how well the current IETF protocols address
this problem, what their short comings might be, and what IETF work is
necessary to have a deployable protocol suite to address this need.

We have set down our first thoughts in
https://tools.ietf.org/html/draft-dong-network-slicing-problem-statement-00

We find that there are a number of groups doing similar work throughout 
the IETF.

The following comprehensive draft was directed at the ANIMA WG
https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-slice-networking/

https://tools.ietf.org/html/draft-vonhugo-5gangip-ip-issues-00
is a detailed discussion the position of network slicing in a contest of 
next
generation networks

https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slicing-00
looks at multicasting in a sliced context

and

https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01
looks at slicing in a context of traffic engineering.

Our thoughts are that network slicing spans a number of deployment
scenarios, and has a number of diverse applications, ranging from
fragile applications, through to providing enhanced security and 
availability.

Elements of the problem and the resultant solution have a close affinity
to DETNET. There is clearly an affinity with VPN technologies, although
none of the existing VPNs provide the degree of isolation that we think
is required.

We note that there seems to be no natural home for all of the aspects
of this problem.

It therefore seems that if would be a good idea for those interested
in this problem to get together at some point during IETF to swap notes
and share our views on the problem space and how to move forward
with addressing it.

Is there any interest in meeting up to discuss this in Seoul?

Best regards

Stewart/Mach/Jie





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From: Stewart Bryant <stewart.bryant@gmail.com>
To: 5gangip@ietf.org, detnet@ietf.org, nfvrg@irtf.org, draft-galis-anima-autonomic-slice-networking@ietf.org, draft-vonhugo-5gangip-ip-issues@ietf.org, draft-xuan-dmm-multicast-mobility-slicing@ietf.org, draft-ietf-teas-actn-framework@ietf.org
Message-ID: <6761290b-eac5-8241-eb7f-32683fe594a1@gmail.com>
Date: Tue, 1 Nov 2016 15:21:30 +0000
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Cc: "Dongjie \(Jimmy\)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>
Subject: [Detnet] Network Slicing - a suggestion that we meet to discuss in Seoul
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(Resent with correct draft alias)

Hi,

We were trying to pull together a problem statement for network slicing
in a 5G context to understand how well the current IETF protocols 
address this problem, what their short comings might be, and what IETF 
work is necessary to have a deployable protocol suite to address this need.

We have set down our first thoughts in
https://tools.ietf.org/html/draft-dong-network-slicing-problem-statement-00

We find that there are a number of groups doing similar work throughout 
the IETF.

The following comprehensive draft was directed at the ANIMA WG
https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-slice-networking/

https://tools.ietf.org/html/draft-vonhugo-5gangip-ip-issues-00
is a detailed discussion the position of network slicing in a contest of 
next generation networks

https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slicing-00
looks at multicasting in a sliced context

and

https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01
looks at slicing in a context of traffic engineering.

Our thoughts are that network slicing spans a number of deployment
scenarios, and has a number of diverse applications, ranging from
fragile applications, through to providing enhanced security and 
availability.

Elements of the problem and the resultant solution have a close affinity
to DETNET. There is clearly an affinity with VPN technologies, although
none of the existing VPNs provide the degree of isolation that we think
is required.

We note that there seems to be no natural home for all of the aspects
of this problem.

It therefore seems that if would be a good idea for those interested
in this problem to get together at some point during IETF to swap notes
and share our views on the problem space and how to move forward
with addressing it.

Is there any interest in meeting up to discuss this in Seoul?

Best regards

Stewart/Mach/Jie





From nobody Tue Nov  1 09:55:56 2016
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To: Stewart Bryant <stewart.bryant@gmail.com>, 5gangip@ietf.org, detnet@ietf.org, nfvrg@irtf.org, draft-galis-anima-autonomic-slice-networking@ietf.org, draft-vonhugo-5gangip-ip-issues@ietf.org, draft-xuan-dmm-multicast-mobility-slicing@ietf.org, draft-ietf-teas-actn-framework@ietf.org
References: <6761290b-eac5-8241-eb7f-32683fe594a1@gmail.com>
From: Joe Touch <touch@isi.edu>
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Cc: "Dongjie \(Jimmy\)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>
Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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Hi, all,


On 11/1/2016 8:21 AM, Stewart Bryant wrote:
> We were trying to pull together a problem statement for network slicing
> in a 5G context to understand how well the current IETF protocols
> address this problem, what their short comings might be, and what IETF
> work is necessary to have a deployable protocol suite to address this
> need. 

I've seen this term around for a while, and continue to consider it
nonsensical.

It originally referred to a way of cutting OS resources and tying them
to a distributed system in PlanetLab, which had no support for network
virtualization. It has since been used to refer to E2E virtual nets
(distinct from VPNs, which often tether individual hosts to a private
net over the public Internet), but all networks have always had that
capability.

IMO, this term isn't related to the Internet architecture at all. It
needs to correctly tie the existing network overlays that the Internet
has supported for a very long time to OS resources.

I.e., most of the work in defining "network slicing" needs to happen
inside the OS, which is out of scope for the IETF. A properly defined
E2E virtual network terminates at (virtual) network interfaces, which is
compatible with either a sliced OS or a non-sliced OS.

Joe


From nobody Tue Nov  1 10:03:34 2016
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Cc: "Dongjie \(Jimmy\)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>, draft-ietf-teas-actn-framework@ietf.org, draft-galis-anima-autonomic-slice-networking@ietf.org, nfvrg@irtf.org, 5gangip@ietf.org, detnet@ietf.org, draft-vonhugo-5gangip-ip-issues@ietf.org, draft-xuan-dmm-multicast-mobility-slicing@ietf.org
Subject: Re: [Detnet] Network Slicing - a suggestion that we meet to discuss in Seoul
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Stewart,

Two comments on draft-dong-network-slicing-problem-statement-00 that may =
be of interest:

1. In your discussion of dedicated vs. hybrid vs. shared control plane, =
I would have added, to the sentence describing the advantages of the =
dedicated control plane, the expense of duplicated effort across slices, =
e.g.link failure detection (BFD).

2. Although not explicitly discussed in the DetNet documents, IEEE 802.1 =
Time-Sensitive Networking has the ability, to configure synchronized =
rotating input and output schedules, with nanosecond granularity, that =
can erect time-based barriers among a modest number of network slices.

=E2=80=94 Norm

> On Nov 1, 2016, at 8:21 AM, Stewart Bryant <stewart.bryant@gmail.com> =
wrote:
>=20
>=20
> (Resent with correct draft alias)
>=20
> Hi,
>=20
> We were trying to pull together a problem statement for network =
slicing
> in a 5G context to understand how well the current IETF protocols =
address this problem, what their short comings might be, and what IETF =
work is necessary to have a deployable protocol suite to address this =
need.
>=20
> We have set down our first thoughts in
> =
https://tools.ietf.org/html/draft-dong-network-slicing-problem-statement-0=
0
>=20
> We find that there are a number of groups doing similar work =
throughout the IETF.
>=20
> The following comprehensive draft was directed at the ANIMA WG
> =
https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-slice-network=
ing/
>=20
> https://tools.ietf.org/html/draft-vonhugo-5gangip-ip-issues-00
> is a detailed discussion the position of network slicing in a contest =
of next generation networks
>=20
> =
https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slicing-00
> looks at multicasting in a sliced context
>=20
> and
>=20
> https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01
> looks at slicing in a context of traffic engineering.
>=20
> Our thoughts are that network slicing spans a number of deployment
> scenarios, and has a number of diverse applications, ranging from
> fragile applications, through to providing enhanced security and =
availability.
>=20
> Elements of the problem and the resultant solution have a close =
affinity
> to DETNET. There is clearly an affinity with VPN technologies, =
although
> none of the existing VPNs provide the degree of isolation that we =
think
> is required.
>=20
> We note that there seems to be no natural home for all of the aspects
> of this problem.
>=20
> It therefore seems that if would be a good idea for those interested
> in this problem to get together at some point during IETF to swap =
notes
> and share our views on the problem space and how to move forward
> with addressing it.
>=20
> Is there any interest in meeting up to discuss this in Seoul?
>=20
> Best regards
>=20
> Stewart/Mach/Jie
>=20
>=20
>=20
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet


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From: Ca By <cb.list6@gmail.com>
Date: Tue, 1 Nov 2016 10:27:17 -0700
Message-ID: <CAD6AjGSsMcF=50sr4M+iEDj7ZTJ=ht3bX95SaApqithNc3-WMQ@mail.gmail.com>
To: Joe Touch <touch@isi.edu>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/detnet/UEsFF9vGWZRioT4KzUVTphL1U00>
Cc: "Dongjie \(Jimmy\)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>, draft-ietf-teas-actn-framework@ietf.org, draft-galis-anima-autonomic-slice-networking@ietf.org, nfvrg@irtf.org, 5gangip@ietf.org, Stewart Bryant <stewart.bryant@gmail.com>, detnet@ietf.org, draft-vonhugo-5gangip-ip-issues@ietf.org, draft-xuan-dmm-multicast-mobility-slicing@ietf.org
Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On Tue, Nov 1, 2016 at 9:55 AM, Joe Touch <touch@isi.edu> wrote:

> Hi, all,
>
>
> On 11/1/2016 8:21 AM, Stewart Bryant wrote:
> > We were trying to pull together a problem statement for network slicing
> > in a 5G context to understand how well the current IETF protocols
> > address this problem, what their short comings might be, and what IETF
> > work is necessary to have a deployable protocol suite to address this
> > need.
>
> I've seen this term around for a while, and continue to consider it
> nonsensical.
>
> It originally referred to a way of cutting OS resources and tying them
> to a distributed system in PlanetLab, which had no support for network
> virtualization. It has since been used to refer to E2E virtual nets
> (distinct from VPNs, which often tether individual hosts to a private
> net over the public Internet), but all networks have always had that
> capability.
>
> IMO, this term isn't related to the Internet architecture at all. It
> needs to correctly tie the existing network overlays that the Internet
> has supported for a very long time to OS resources.
>
> I.e., most of the work in defining "network slicing" needs to happen
> inside the OS, which is out of scope for the IETF. A properly defined
> E2E virtual network terminates at (virtual) network interfaces, which is
> compatible with either a sliced OS or a non-sliced OS.
>
> Joe
>

+1

Has there been a liason statement from the 3GPP requesting this work of the
IETF?

Not trying to limit innovation here, it just seems the problem statement is
not well defined in the IETF.... it is very well defined and being worked
in the 3GPP.  So, folks that have ideas on problems to solve in this space
may best spend their time in 3GPP where most of this work is being done.

CB


>
> _______________________________________________
> 5gangip mailing list
> 5gangip@ietf.org
> https://www.ietf.org/mailman/listinfo/5gangip
>

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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Tue, Nov 1, 2016 at 9:55 AM, Joe Touch <span dir=3D"ltr">&lt;<a href=
=3D"mailto:touch@isi.edu" target=3D"_blank">touch@isi.edu</a>&gt;</span> wr=
ote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border=
-left:1px #ccc solid;padding-left:1ex">Hi, all,<br>
<span class=3D""><br>
<br>
On 11/1/2016 8:21 AM, Stewart Bryant wrote:<br>
&gt; We were trying to pull together a problem statement for network slicin=
g<br>
&gt; in a 5G context to understand how well the current IETF protocols<br>
&gt; address this problem, what their short comings might be, and what IETF=
<br>
&gt; work is necessary to have a deployable protocol suite to address this<=
br>
&gt; need.<br>
<br>
</span>I&#39;ve seen this term around for a while, and continue to consider=
 it<br>
nonsensical.<br>
<br>
It originally referred to a way of cutting OS resources and tying them<br>
to a distributed system in PlanetLab, which had no support for network<br>
virtualization. It has since been used to refer to E2E virtual nets<br>
(distinct from VPNs, which often tether individual hosts to a private<br>
net over the public Internet), but all networks have always had that<br>
capability.<br>
<br>
IMO, this term isn&#39;t related to the Internet architecture at all. It<br=
>
needs to correctly tie the existing network overlays that the Internet<br>
has supported for a very long time to OS resources.<br>
<br>
I.e., most of the work in defining &quot;network slicing&quot; needs to hap=
pen<br>
inside the OS, which is out of scope for the IETF. A properly defined<br>
E2E virtual network terminates at (virtual) network interfaces, which is<br=
>
compatible with either a sliced OS or a non-sliced OS.<br>
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
Joe<br></font></span></blockquote><div><br></div><div>+1</div><div><br></di=
v><div>Has there been a liason statement from the 3GPP requesting this work=
 of the IETF?</div><div><br></div><div>Not trying to limit innovation here,=
 it just seems the problem statement is not well defined in the IETF.... it=
 is very well defined and being worked in the 3GPP.=C2=A0 So, folks that ha=
ve ideas on problems to solve in this space may best spend their time in 3G=
PP where most of this work is being done.</div><div><br></div><div>CB</div>=
<div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8=
ex;border-left:1px #ccc solid;padding-left:1ex"><span class=3D"HOEnZb"><fon=
t color=3D"#888888">
</font></span><div class=3D"HOEnZb"><div class=3D"h5"><br>
______________________________<wbr>_________________<br>
5gangip mailing list<br>
<a href=3D"mailto:5gangip@ietf.org">5gangip@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/5gangip" rel=3D"noreferrer=
" target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/5gangip</a><=
br>
</div></div></blockquote></div><br></div></div>

--047d7b5d42d2d87ff0054040a2d8--


From nobody Tue Nov  1 12:36:13 2016
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To: Ca By <cb.list6@gmail.com>, Joe Touch <touch@isi.edu>
References: <6761290b-eac5-8241-eb7f-32683fe594a1@gmail.com> <344f12df-4f25-c7ce-ec38-1354f7fca90e@isi.edu> <CAD6AjGSsMcF=50sr4M+iEDj7ZTJ=ht3bX95SaApqithNc3-WMQ@mail.gmail.com>
From: Stewart Bryant <stewart.bryant@gmail.com>
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Date: Tue, 1 Nov 2016 19:36:04 +0000
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Cc: "Dongjie \(Jimmy\)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>, draft-ietf-teas-actn-framework@ietf.org, draft-galis-anima-autonomic-slice-networking@ietf.org, nfvrg@irtf.org, 5gangip@ietf.org, detnet@ietf.org, draft-vonhugo-5gangip-ip-issues@ietf.org, draft-xuan-dmm-multicast-mobility-slicing@ietf.org
Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 01/11/2016 17:27, Ca By wrote:
>
>
> On Tue, Nov 1, 2016 at 9:55 AM, Joe Touch <touch@isi.edu 
> <mailto:touch@isi.edu>> wrote:
>
>     Hi, all,
>
>
>     On 11/1/2016 8:21 AM, Stewart Bryant wrote:
>     > We were trying to pull together a problem statement for network
>     slicing
>     > in a 5G context to understand how well the current IETF protocols
>     > address this problem, what their short comings might be, and
>     what IETF
>     > work is necessary to have a deployable protocol suite to address
>     this
>     > need.
>
>     I've seen this term around for a while, and continue to consider it
>     nonsensical.
>
>     It originally referred to a way of cutting OS resources and tying them
>     to a distributed system in PlanetLab, which had no support for network
>     virtualization. It has since been used to refer to E2E virtual nets
>     (distinct from VPNs, which often tether individual hosts to a private
>     net over the public Internet), but all networks have always had that
>     capability.
>
>     IMO, this term isn't related to the Internet architecture at all. It
>     needs to correctly tie the existing network overlays that the Internet
>     has supported for a very long time to OS resources.
>
>     I.e., most of the work in defining "network slicing" needs to happen
>     inside the OS, which is out of scope for the IETF. A properly defined
>     E2E virtual network terminates at (virtual) network interfaces,
>     which is
>     compatible with either a sliced OS or a non-sliced OS.
>
>     Joe
>
>
> +1
>
> Has there been a liason statement from the 3GPP requesting this work 
> of the IETF?
>
> Not trying to limit innovation here, it just seems the problem 
> statement is not well defined in the IETF.... it is very well defined 
> and being worked in the 3GPP.  So, folks that have ideas on problems 
> to solve in this space may best spend their time in 3GPP where most of 
> this work is being done.

3GPP cannot however change IETF protocols, such as the routing protocols 
or the network layer protocols to support this.

At this stage I am thinking of a discussion amongst interested parties 
to see what if anything needs doing in the IETF.

Stewart

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    <br>
    <div class="moz-cite-prefix">On 01/11/2016 17:27, Ca By wrote:<br>
    </div>
    <blockquote
cite="mid:CAD6AjGSsMcF=50sr4M+iEDj7ZTJ=ht3bX95SaApqithNc3-WMQ@mail.gmail.com"
      type="cite">
      <div dir="ltr"><br>
        <div class="gmail_extra"><br>
          <div class="gmail_quote">On Tue, Nov 1, 2016 at 9:55 AM, Joe
            Touch <span dir="ltr">&lt;<a moz-do-not-send="true"
                href="mailto:touch@isi.edu" target="_blank">touch@isi.edu</a>&gt;</span>
            wrote:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi, all,<br>
              <span class=""><br>
                <br>
                On 11/1/2016 8:21 AM, Stewart Bryant wrote:<br>
                &gt; We were trying to pull together a problem statement
                for network slicing<br>
                &gt; in a 5G context to understand how well the current
                IETF protocols<br>
                &gt; address this problem, what their short comings
                might be, and what IETF<br>
                &gt; work is necessary to have a deployable protocol
                suite to address this<br>
                &gt; need.<br>
                <br>
              </span>I've seen this term around for a while, and
              continue to consider it<br>
              nonsensical.<br>
              <br>
              It originally referred to a way of cutting OS resources
              and tying them<br>
              to a distributed system in PlanetLab, which had no support
              for network<br>
              virtualization. It has since been used to refer to E2E
              virtual nets<br>
              (distinct from VPNs, which often tether individual hosts
              to a private<br>
              net over the public Internet), but all networks have
              always had that<br>
              capability.<br>
              <br>
              IMO, this term isn't related to the Internet architecture
              at all. It<br>
              needs to correctly tie the existing network overlays that
              the Internet<br>
              has supported for a very long time to OS resources.<br>
              <br>
              I.e., most of the work in defining "network slicing" needs
              to happen<br>
              inside the OS, which is out of scope for the IETF. A
              properly defined<br>
              E2E virtual network terminates at (virtual) network
              interfaces, which is<br>
              compatible with either a sliced OS or a non-sliced OS.<br>
              <span class="HOEnZb"><font color="#888888"><br>
                  Joe<br>
                </font></span></blockquote>
            <div><br>
            </div>
            <div>+1</div>
            <div><br>
            </div>
            <div>Has there been a liason statement from the 3GPP
              requesting this work of the IETF?</div>
            <div><br>
            </div>
            <div>Not trying to limit innovation here, it just seems the
              problem statement is not well defined in the IETF.... it
              is very well defined and being worked in the 3GPP.  So,
              folks that have ideas on problems to solve in this space
              may best spend their time in 3GPP where most of this work
              is being done.<br>
            </div>
          </div>
        </div>
      </div>
    </blockquote>
    <br>
    3GPP cannot however change IETF protocols, such as the routing
    protocols or the network layer protocols to support this.<br>
    <br>
    At this stage I am thinking of a discussion amongst interested
    parties to see what if anything needs doing in the IETF.<br>
    <br>
    Stewart<br>
  </body>
</html>

--------------6D9B853F40A0AEA761C48C0D--


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To: Joe Touch <touch@isi.edu>, 5gangip@ietf.org, detnet@ietf.org, nfvrg@irtf.org, draft-galis-anima-autonomic-slice-networking@ietf.org, draft-vonhugo-5gangip-ip-issues@ietf.org, draft-xuan-dmm-multicast-mobility-slicing@ietf.org, draft-ietf-teas-actn-framework@ietf.org
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From: Stewart Bryant <stewart.bryant@gmail.com>
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Date: Tue, 1 Nov 2016 19:39:34 +0000
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Cc: "Dongjie \(Jimmy\)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>
Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 01/11/2016 16:55, Joe Touch wrote:
> Hi, all,
>
>
> On 11/1/2016 8:21 AM, Stewart Bryant wrote:
>> We were trying to pull together a problem statement for network slicing
>> in a 5G context to understand how well the current IETF protocols
>> address this problem, what their short comings might be, and what IETF
>> work is necessary to have a deployable protocol suite to address this
>> need.
> I've seen this term around for a while, and continue to consider it
> nonsensical.
>
> It originally referred to a way of cutting OS resources and tying them
> to a distributed system in PlanetLab, which had no support for network
> virtualization. It has since been used to refer to E2E virtual nets
> (distinct from VPNs, which often tether individual hosts to a private
> net over the public Internet), but all networks have always had that
> capability.
>
> IMO, this term isn't related to the Internet architecture at all. It
> needs to correctly tie the existing network overlays that the Internet
> has supported for a very long time to OS resources.
>
> I.e., most of the work in defining "network slicing" needs to happen
> inside the OS, which is out of scope for the IETF. A properly defined
> E2E virtual network terminates at (virtual) network interfaces, which is
> compatible with either a sliced OS or a non-sliced OS.
>
> Joe
>

Joe, we possibly have different ideas as to what network slicing is.

My assumption is that it is a way that we can create multiple virtually 
networks
over a common base network with a higher degree of isolation between
VPNs and much higher performance guarantees than we currently achieve.

If we need a new name, we need a new name, but the concept does not seem
to align with the definition you hints at.

- Stewart



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From: Jeff Tantsura <jefftant.ietf@gmail.com>
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References: <6761290b-eac5-8241-eb7f-32683fe594a1@gmail.com> <344f12df-4f25-c7ce-ec38-1354f7fca90e@isi.edu> <251f8c92-45f5-00ac-4507-173404df7329@gmail.com>
To: Stewart Bryant <stewart.bryant@gmail.com>
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Cc: "Dongjie \(Jimmy\)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>, Joe Touch <touch@isi.edu>, draft-ietf-teas-actn-framework@ietf.org, draft-galis-anima-autonomic-slice-networking@ietf.org, nfvrg@irtf.org, 5gangip@ietf.org, detnet@ietf.org, draft-vonhugo-5gangip-ip-issues@ietf.org, draft-xuan-dmm-multicast-mobility-slicing@ietf.org
Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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Network slicing has become de facto standard terminology in context of 5G.

It would be rather useful to:
-agree on terminology=20
-discuss data modeling, interrelated technologies - radio, packet core, tran=
sport, optical to mention some and how they could work together/form in a "s=
lice"
-bring together experts in these, rather disjointed domains.
-many other things=20

Regards,
Jeff

> On Nov 1, 2016, at 12:39, Stewart Bryant <stewart.bryant@gmail.com> wrote:=

>=20
>=20
>=20
>> On 01/11/2016 16:55, Joe Touch wrote:
>> Hi, all,
>>=20
>>=20
>>> On 11/1/2016 8:21 AM, Stewart Bryant wrote:
>>> We were trying to pull together a problem statement for network slicing
>>> in a 5G context to understand how well the current IETF protocols
>>> address this problem, what their short comings might be, and what IETF
>>> work is necessary to have a deployable protocol suite to address this
>>> need.
>> I've seen this term around for a while, and continue to consider it
>> nonsensical.
>>=20
>> It originally referred to a way of cutting OS resources and tying them
>> to a distributed system in PlanetLab, which had no support for network
>> virtualization. It has since been used to refer to E2E virtual nets
>> (distinct from VPNs, which often tether individual hosts to a private
>> net over the public Internet), but all networks have always had that
>> capability.
>>=20
>> IMO, this term isn't related to the Internet architecture at all. It
>> needs to correctly tie the existing network overlays that the Internet
>> has supported for a very long time to OS resources.
>>=20
>> I.e., most of the work in defining "network slicing" needs to happen
>> inside the OS, which is out of scope for the IETF. A properly defined
>> E2E virtual network terminates at (virtual) network interfaces, which is
>> compatible with either a sliced OS or a non-sliced OS.
>>=20
>> Joe
>>=20
>=20
> Joe, we possibly have different ideas as to what network slicing is.
>=20
> My assumption is that it is a way that we can create multiple virtually ne=
tworks
> over a common base network with a higher degree of isolation between
> VPNs and much higher performance guarantees than we currently achieve.
>=20
> If we need a new name, we need a new name, but the concept does not seem
> to align with the definition you hints at.
>=20
> - Stewart
>=20
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet


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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 1 Nov 2016, at 19:36, Stewart Bryant wrote:

[snip]
> 3GPP cannot however change IETF protocols, such as the routing =
protocols or the network layer protocols to support this.
>=20
True, but in the RAN they have their own protocols. For 4G they based =
those on IP but the experience has encouraged them to want to do =
something different for 5G. See =
http://www.etsi.org/images/files/ETSIWhitePapers/etsi_wp17_Next_Generation=
_Protocols_v01.pdf

John Grant
Nine Tiles, Cambridge, England
+44 1223 862599 and +44 1223 511455
http://www.ninetiles.com



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<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On 1 Nov 2016, at 19:36, Stewart Bryant wrote:</div><div><br></div>[snip]<br class="Apple-interchange-newline"><blockquote type="cite">
  
    <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
  
  <div bgcolor="#FFFFFF" text="#000000"><p>3GPP cannot however change IETF protocols, such as the routing
    protocols or the network layer protocols to support this.</p></div></blockquote><div>True, but in the RAN they have their own protocols. For 4G they based those on IP but the experience has encouraged them to want to do something different for 5G. See <a href="http://www.etsi.org/images/files/ETSIWhitePapers/etsi_wp17_Next_Generation_Protocols_v01.pdf">http://www.etsi.org/images/files/ETSIWhitePapers/etsi_wp17_Next_Generation_Protocols_v01.pdf</a></div><div><br></div></div><div>
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">John Grant<br>Nine Tiles, Cambridge, England<br>+44 1223 862599 and +44 1223 511455<br><a href="http://www.ninetiles.com">http://www.ninetiles.com</a><br><br></div></span></div>
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From: Carlos =?ISO-8859-1?Q?Jes=FAs?= Bernardos Cano <cjbc@it.uc3m.es>
To: Lou Berger <lberger@labn.net>, detnet@ietf.org
Date: Tue, 01 Nov 2016 23:07:45 +0100
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Subject: Re: [Detnet] Agenda requests for IETF97 in Seoul
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Dear chairs,

We have submitted a draft [1] describing the crosshauling (integrated
backhaul and fronthaul transport in a mobile network) use case of
interest and identifying requirements for detnet. We would like to
request a short slot (10 minutes) to present it in Seoul.

Thanks,

Carlos

[1] https://tools.ietf.org/html/draft-bernardos-detnet-crosshaul-requir
ements-00

On Mon, 2016-10-31 at 10:26 -0400, Lou Berger wrote:
> Just a reminder, time to get in your requests...
> 
> 
> On 10/24/2016 10:39 AM, Jouni Korhonen wrote:
> > Folks,
> > 
> > The final agenda was published last Friday, see https://datatracker
> > .ietf.org/meeting/97/agenda.html. DetNet WG is on air 9:30-12:00
> > Tuesday, November 15, 2016 in Park Ballroom 1.
> > 
> > If you'd like to have a presentation slot in Seoul, please send a
> > request to the chairs and me by Friday October 28th. Also pay
> > attention to the important dates listed below. Specifically, the
> > document submission deadline is on Monday UTC 23:59 on October
> > 31st. When requesting a slot having a draft that has alrady been
> > seen and discussed on the list is highly encouraged.
> > 
> > Any WG draft not being discussed/presented needs to a status update
> > sent to the list by Friday November 11th. Please also provide a
> > summary slide by Sunday, November 13th.
> > 
> > We'll need all slides for presentations by Sunday, November 13th.
> > The earlier, the better, though.
> > 
> > Cheers,
> >        Jouni, Lou & Pat
> > 
> > 
> > =====> Important dates <=====
> > 
> > * 2016-10-31 (Monday): Internet Draft submission cut-off (for all
> > drafts, including -00) by UTC 23:59, upload usingIETF ID Submission
> > Tool.
> > * 2016-10-31 (Monday): Draft Working Group agendas due by UTC
> > 23:59, upload using IETF Meeting Materials Management Tool.
> > * 2016-11-04 (Friday): Early Bird registration and payment cut-off
> > at UTC 23:59.
> > * 2016-11-07 (Monday): Revised Working Group agendas due by UTC
> > 23:59, upload using IETF Meeting Materials Management Tool.
> > * 2016-11-07 (Monday): Registration cancellation cut-off at UTC
> > 23:59. 
> > * 2016-11-11 (Friday): Final Pre-Registration and Pre-Payment cut-
> > off at 17:00 local meeting time.
> > * 2016-11-13 - 2016-11-18: IETF 97 in Seoul, South Korea
> > _______________________________________________
> > detnet mailing list
> > detnet@ietf.org
> > https://www.ietf.org/mailman/listinfo/detnet
> > 
> 
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet


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From: <Kashif.Mahmood@telenor.com>
To: <jefftant.ietf@gmail.com>, <stewart.bryant@gmail.com>
Thread-Topic: [Nfvrg] [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul (INTERNAL)
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Subject: Re: [Detnet] [Nfvrg] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul (INTERNAL)
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IMO the discussion below is around resource slicing where resources are com=
pute/connectivity/storage.

What 3GPP talks is more about network slicing which  is more of a "logical =
network composed by interconnection of set of network functions". Off cours=
e network slices cannot run in the air so they need resources slices and th=
is is how I see the mapping.

FYI:

3GPP SA2 defines the following (TR 23.799)


Network Slice Template (NST):  is a logical representation of the Network F=
unction(s) and corresponding resource requirements necessary to provide the=
 required telecommunication services and network capabilities.
Network Slice Instance (NSI): is an instance created from a Network Slice T=
emplate (NST).
Network Slice: is a concept describing a system behaviour which is implemen=
ted via Network Slice Instance(s).



BR,

Kashif



-----Original Message-----
From: Nfvrg [mailto:nfvrg-bounces@irtf.org] On Behalf Of Jeff Tantsura
Sent: 1. november 2016 22:26
To: Stewart Bryant
Cc: Dongjie (Jimmy); Mach Chen; Joe Touch; draft-ietf-teas-actn-framework@i=
etf.org; draft-galis-anima-autonomic-slice-networking@ietf.org; nfvrg@irtf.=
org; 5gangip@ietf.org; detnet@ietf.org; draft-vonhugo-5gangip-ip-issues@iet=
f.org; draft-xuan-dmm-multicast-mobility-slicing@ietf.org
Subject: Re: [Nfvrg] [Detnet] [5gangip] Network Slicing - a suggestion that=
 we meet to discuss in Seoul



Network slicing has become de facto standard terminology in context of 5G.



It would be rather useful to:

-agree on terminology

-discuss data modeling, interrelated technologies - radio, packet core, tra=
nsport, optical to mention some and how they could work together/form in a =
"slice"

-bring together experts in these, rather disjointed domains.

-many other things



Regards,

Jeff



> On Nov 1, 2016, at 12:39, Stewart Bryant <stewart.bryant@gmail.com<mailto=
:stewart.bryant@gmail.com>> wrote:

>

>

>

>> On 01/11/2016 16:55, Joe Touch wrote:

>> Hi, all,

>>

>>

>>> On 11/1/2016 8:21 AM, Stewart Bryant wrote:

>>> We were trying to pull together a problem statement for network

>>> slicing in a 5G context to understand how well the current IETF

>>> protocols address this problem, what their short comings might be,

>>> and what IETF work is necessary to have a deployable protocol suite

>>> to address this need.

>> I've seen this term around for a while, and continue to consider it

>> nonsensical.

>>

>> It originally referred to a way of cutting OS resources and tying

>> them to a distributed system in PlanetLab, which had no support for

>> network virtualization. It has since been used to refer to E2E

>> virtual nets (distinct from VPNs, which often tether individual hosts

>> to a private net over the public Internet), but all networks have

>> always had that capability.

>>

>> IMO, this term isn't related to the Internet architecture at all. It

>> needs to correctly tie the existing network overlays that the

>> Internet has supported for a very long time to OS resources.

>>

>> I.e., most of the work in defining "network slicing" needs to happen

>> inside the OS, which is out of scope for the IETF. A properly defined

>> E2E virtual network terminates at (virtual) network interfaces, which

>> is compatible with either a sliced OS or a non-sliced OS.

>>

>> Joe

>>

>

> Joe, we possibly have different ideas as to what network slicing is.

>

> My assumption is that it is a way that we can create multiple

> virtually networks over a common base network with a higher degree of

> isolation between VPNs and much higher performance guarantees than we cur=
rently achieve.

>

> If we need a new name, we need a new name, but the concept does not

> seem to align with the definition you hints at.

>

> - Stewart

>

>

> _______________________________________________

> detnet mailing list

> detnet@ietf.org<mailto:detnet@ietf.org>

> https://www.ietf.org/mailman/listinfo/detnet



_______________________________________________

Nfvrg mailing list

Nfvrg@irtf.org<mailto:Nfvrg@irtf.org>

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<div class=3D"WordSection1">
<p class=3D"MsoPlainText"><span lang=3D"EN-US">IMO the discussion below is =
around <i>
resource slicing</i> where resources are compute/connectivity/storage.<o:p>=
</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">What 3GPP talks is more abou=
t <i>network slicing</i> which&nbsp; is more of a &#8220;logical network co=
mposed by interconnection of set of network functions&#8221;. Off course ne=
twork slices cannot run in the air so they need resources
 slices and this is how I see the mapping.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">FYI:<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">3GPP SA2 defines the followi=
ng (TR 23.799)<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">Network Slice</span></b><b><=
span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">
</span></b><b><span lang=3D"EN-US">Template (NST): </span></b><span lang=3D=
"EN-US" style=3D"mso-fareast-language:ZH-CN">&nbsp;i</span><span lang=3D"EN=
-US">s a logical representation of</span><span lang=3D"EN-US" style=3D"mso-=
fareast-language:ZH-CN">
</span><span lang=3D"EN-US">the </span><span lang=3D"EN-US" style=3D"mso-fa=
reast-language:ZH-CN">N</span><span lang=3D"EN-US">etwork
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">F</span><s=
pan lang=3D"EN-US">unction</span><span lang=3D"EN-US" style=3D"mso-fareast-=
language:ZH-CN">(</span><span lang=3D"EN-US">s</span><span lang=3D"EN-US" s=
tyle=3D"mso-fareast-language:ZH-CN">)
</span><span lang=3D"EN-US">and corresponding resource requirements</span><=
span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN"> necessary</span><=
span lang=3D"EN-US"> to provide
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">the requir=
ed t</span><span lang=3D"EN-US">elecommunication
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">s</span><s=
pan lang=3D"EN-US">ervice</span><span lang=3D"EN-US" style=3D"mso-fareast-l=
anguage:ZH-CN">s</span><span lang=3D"EN-US"> and
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">network</s=
pan><span lang=3D"EN-US">
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">c</span><s=
pan lang=3D"EN-US">apabilities</span><span lang=3D"EN-US" style=3D"mso-fare=
ast-language:ZH-CN">.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">Network Slice Instance (NSI)=
: </span></b><span lang=3D"EN-US">is an instance created from a Network Sli=
ce Template (NST).</span><span lang=3D"EN-US" style=3D"mso-fareast-language=
:ZH-CN"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">Network Slice: </span></b><s=
pan lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">i</span><span lang=
=3D"EN-US">s a concept describing a system behaviour which is implemented v=
ia Network Slice Instance(s).
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN"><o:p></o:p=
></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText">BR,<o:p></o:p></p>
<p class=3D"MsoPlainText">Kashif<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"mso-fareast-languag=
e:NO-BOK">-----Original Message-----<br>
From: Nfvrg [mailto:nfvrg-bounces@irtf.org] On Behalf Of Jeff Tantsura<br>
Sent: 1. november 2016 22:26<br>
To: Stewart Bryant<br>
Cc: Dongjie (Jimmy); Mach Chen; Joe Touch; draft-ietf-teas-actn-framework@i=
etf.org; draft-galis-anima-autonomic-slice-networking@ietf.org; nfvrg@irtf.=
org; 5gangip@ietf.org; detnet@ietf.org; draft-vonhugo-5gangip-ip-issues@iet=
f.org; draft-xuan-dmm-multicast-mobility-slicing@ietf.org<br>
Subject: Re: [Nfvrg] [Detnet] [5gangip] Network Slicing - a suggestion that=
 we meet to discuss in Seoul</span></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Network slicing has become de facto standard term=
inology in context of 5G.<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">It would be rather useful to:<o:p></o:p></p>
<p class=3D"MsoPlainText">-agree on terminology<o:p></o:p></p>
<p class=3D"MsoPlainText">-discuss data modeling, interrelated technologies=
 - radio, packet core, transport, optical to mention some and how they coul=
d work together/form in a &quot;slice&quot;<o:p></o:p></p>
<p class=3D"MsoPlainText">-bring together experts in these, rather disjoint=
ed domains.<o:p></o:p></p>
<p class=3D"MsoPlainText">-many other things <o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Regards,<o:p></o:p></p>
<p class=3D"MsoPlainText">Jeff<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; On Nov 1, 2016, at 12:3=
9, Stewart Bryant &lt;</span><a href=3D"mailto:stewart.bryant@gmail.com"><s=
pan lang=3D"EN-US" style=3D"color:windowtext;text-decoration:none">stewart.=
bryant@gmail.com</span></a><span lang=3D"EN-US">&gt;
 wrote:<o:p></o:p></span></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; On 01/11/2016 16:55, Joe Touch wrote:<o:=
p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; Hi, all,<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; On 11/1/2016 8:21 AM, Stewart Bryant=
 wrote:<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; We were trying to pull together a pr=
oblem statement for network
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; slicing in a 5G context to understan=
d how well the current IETF
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; protocols address this problem, what=
 their short comings might be,
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; and what IETF work is necessary to h=
ave a deployable protocol suite
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; to address this need.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; I've seen this term around for a while, =
and continue to consider it
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; nonsensical.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; It originally referred to a way of cutti=
ng OS resources and tying
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; them to a distributed system in PlanetLa=
b, which had no support for
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; network virtualization. It has since bee=
n used to refer to E2E
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; virtual nets (distinct from VPNs, which =
often tether individual hosts
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; to a private net over the public Interne=
t), but all networks have
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; always had that capability.<o:p></o:p></=
p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; IMO, this term isn't related to the Inte=
rnet architecture at all. It
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; needs to correctly tie the existing netw=
ork overlays that the
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; Internet has supported for a very long t=
ime to OS resources.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; I.e., most of the work in defining &quot=
;network slicing&quot; needs to happen
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; inside the OS, which is out of scope for=
 the IETF. A properly defined
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; E2E virtual network terminates at (virtu=
al) network interfaces, which
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; is compatible with either a sliced OS or=
 a non-sliced OS.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; Joe<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; Joe, we possibly have different ideas as to =
what network slicing is.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; My assumption is that it is a way that we ca=
n create multiple
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; virtually networks over a common base networ=
k with a higher degree of
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; isolation between VPNs and much higher perfo=
rmance guarantees than we currently achieve.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; If we need a new name, we need a new name, b=
ut the concept does not
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; seem to align with the definition you hints =
at.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; - Stewart<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; ____________________________________________=
___<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; detnet mailing list<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <a href=3D"mailto:detnet@ietf.org"><span sty=
le=3D"color:windowtext;text-decoration:none">detnet@ietf.org</span></a><o:p=
></o:p></p>
<p class=3D"MsoPlainText">&gt; <a href=3D"https://www.ietf.org/mailman/list=
info/detnet">
<span style=3D"color:windowtext;text-decoration:none">https://www.ietf.org/=
mailman/listinfo/detnet</span></a><o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">_______________________________________________<o=
:p></o:p></p>
<p class=3D"MsoPlainText">Nfvrg mailing list<o:p></o:p></p>
<p class=3D"MsoPlainText"><a href=3D"mailto:Nfvrg@irtf.org"><span style=3D"=
color:windowtext;text-decoration:none">Nfvrg@irtf.org</span></a><o:p></o:p>=
</p>
<p class=3D"MsoPlainText"><a href=3D"https://www.irtf.org/mailman/listinfo/=
nfvrg"><span style=3D"color:windowtext;text-decoration:none">https://www.ir=
tf.org/mailman/listinfo/nfvrg</span></a><o:p></o:p></p>
</div>
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Cc: jie.dong@huawei.com, mach.chen@huawei.com, touch@isi.edu, draft-ietf-teas-actn-framework@ietf.org, draft-galis-anima-autonomic-slice-networking@ietf.org, nfvrg@irtf.org, 5gangip@ietf.org, stewart.bryant@gmail.com, detnet@ietf.org, draft-vonhugo-5gangip-ip-issues@ietf.org, draft-xuan-dmm-multicast-mobility-slicing@ietf.org
Subject: Re: [Detnet] [Nfvrg] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul (INTERNAL)
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If we could instantiate all of the below as well described data models (hope=
fully YANG) - this would provide loosely coupled framework across different t=
echnologies.

Data models for transport parts are there, mW work is ongoing in CCAMP. We s=
hould extend this work to services and radio

Regards,
Jeff

> On Nov 1, 2016, at 15:12, <Kashif.Mahmood@telenor.com> <Kashif.Mahmood@tel=
enor.com> wrote:
>=20
> IMO the discussion below is around resource slicing where resources are co=
mpute/connectivity/storage.
> What 3GPP talks is more about network slicing which  is more of a =93logic=
al network composed by interconnection of set of network functions=94. Off c=
ourse network slices cannot run in the air so they need resources slices and=
 this is how I see the mapping.
> FYI:
> 3GPP SA2 defines the following (TR 23.799)
> =20
> Network Slice Template (NST):  is a logical representation of the Network =
Function(s) and corresponding resource requirements necessary to provide the=
 required telecommunication services and network capabilities.
> Network Slice Instance (NSI): is an instance created from a Network Slice T=
emplate (NST).
> Network Slice: is a concept describing a system behaviour which is impleme=
nted via Network Slice Instance(s).
> =20
> BR,
> Kashif
> =20
> -----Original Message-----
> From: Nfvrg [mailto:nfvrg-bounces@irtf.org] On Behalf Of Jeff Tantsura
> Sent: 1. november 2016 22:26
> To: Stewart Bryant
> Cc: Dongjie (Jimmy); Mach Chen; Joe Touch; draft-ietf-teas-actn-framework@=
ietf.org; draft-galis-anima-autonomic-slice-networking@ietf.org; nfvrg@irtf.=
org; 5gangip@ietf.org; detnet@ietf.org; draft-vonhugo-5gangip-ip-issues@ietf=
.org; draft-xuan-dmm-multicast-mobility-slicing@ietf.org
> Subject: Re: [Nfvrg] [Detnet] [5gangip] Network Slicing - a suggestion tha=
t we meet to discuss in Seoul
> =20
> Network slicing has become de facto standard terminology in context of 5G.=

> =20
> It would be rather useful to:
> -agree on terminology
> -discuss data modeling, interrelated technologies - radio, packet core, tr=
ansport, optical to mention some and how they could work together/form in a "=
slice"
> -bring together experts in these, rather disjointed domains.
> -many other things
> =20
> Regards,
> Jeff
> =20
> > On Nov 1, 2016, at 12:39, Stewart Bryant <stewart.bryant@gmail.com> wrot=
e:
> >
> >
> >
> >> On 01/11/2016 16:55, Joe Touch wrote:
> >> Hi, all,
> >>
> >>
> >>> On 11/1/2016 8:21 AM, Stewart Bryant wrote:
> >>> We were trying to pull together a problem statement for network
> >>> slicing in a 5G context to understand how well the current IETF
> >>> protocols address this problem, what their short comings might be,
> >>> and what IETF work is necessary to have a deployable protocol suite
> >>> to address this need.
> >> I've seen this term around for a while, and continue to consider it
> >> nonsensical.
> >>
> >> It originally referred to a way of cutting OS resources and tying
> >> them to a distributed system in PlanetLab, which had no support for
> >> network virtualization. It has since been used to refer to E2E
> >> virtual nets (distinct from VPNs, which often tether individual hosts
> >> to a private net over the public Internet), but all networks have
> >> always had that capability.
> >>
> >> IMO, this term isn't related to the Internet architecture at all. It
> >> needs to correctly tie the existing network overlays that the
> >> Internet has supported for a very long time to OS resources.
> >>
> >> I.e., most of the work in defining "network slicing" needs to happen
> >> inside the OS, which is out of scope for the IETF. A properly defined
> >> E2E virtual network terminates at (virtual) network interfaces, which
> >> is compatible with either a sliced OS or a non-sliced OS.
> >>
> >> Joe
> >>
> >
> > Joe, we possibly have different ideas as to what network slicing is.
> >
> > My assumption is that it is a way that we can create multiple
> > virtually networks over a common base network with a higher degree of
> > isolation between VPNs and much higher performance guarantees than we cu=
rrently achieve.
> >
> > If we need a new name, we need a new name, but the concept does not
> > seem to align with the definition you hints at.
> >
> > - Stewart
> >
> >
> > _______________________________________________
> > detnet mailing list
> > detnet@ietf.org
> > https://www.ietf.org/mailman/listinfo/detnet
> =20
> _______________________________________________
> Nfvrg mailing list
> Nfvrg@irtf.org
> https://www.irtf.org/mailman/listinfo/nfvrg

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div>If we could instantiate all of the bel=
ow as well described data models (hopefully YANG) - this would provide loose=
ly coupled framework across different technologies.</div><div id=3D"AppleMai=
lSignature"><br></div><div id=3D"AppleMailSignature">Data models for transpo=
rt parts are there, mW work is ongoing in CCAMP. We should extend this work t=
o services and radio<br><br>Regards,<div>Jeff</div></div><div><br>On Nov 1, 2=
016, at 15:12, &lt;<a href=3D"mailto:Kashif.Mahmood@telenor.com">Kashif.Mahm=
ood@telenor.com</a>&gt; &lt;<a href=3D"mailto:Kashif.Mahmood@telenor.com">Ka=
shif.Mahmood@telenor.com</a>&gt; wrote:<br><br></div><blockquote type=3D"cit=
e"><div>

<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii">=

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<div class=3D"WordSection1">
<p class=3D"MsoPlainText"><span lang=3D"EN-US">IMO the discussion below is a=
round <i>
resource slicing</i> where resources are compute/connectivity/storage.<o:p><=
/o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">What 3GPP talks is more about=
 <i>network slicing</i> which&nbsp; is more of a =E2=80=9Clogical network co=
mposed by interconnection of set of network functions=E2=80=9D. Off course n=
etwork slices cannot run in the air so they need resources
 slices and this is how I see the mapping.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">FYI:<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">3GPP SA2 defines the followin=
g (TR 23.799)<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">Network Slice</span></b><b><s=
pan lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">
</span></b><b><span lang=3D"EN-US">Template (NST): </span></b><span lang=3D"=
EN-US" style=3D"mso-fareast-language:ZH-CN">&nbsp;i</span><span lang=3D"EN-U=
S">s a logical representation of</span><span lang=3D"EN-US" style=3D"mso-far=
east-language:ZH-CN">
</span><span lang=3D"EN-US">the </span><span lang=3D"EN-US" style=3D"mso-far=
east-language:ZH-CN">N</span><span lang=3D"EN-US">etwork
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">F</span><sp=
an lang=3D"EN-US">unction</span><span lang=3D"EN-US" style=3D"mso-fareast-la=
nguage:ZH-CN">(</span><span lang=3D"EN-US">s</span><span lang=3D"EN-US" styl=
e=3D"mso-fareast-language:ZH-CN">)
</span><span lang=3D"EN-US">and corresponding resource requirements</span><s=
pan lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN"> necessary</span><sp=
an lang=3D"EN-US"> to provide
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">the require=
d t</span><span lang=3D"EN-US">elecommunication
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">s</span><sp=
an lang=3D"EN-US">ervice</span><span lang=3D"EN-US" style=3D"mso-fareast-lan=
guage:ZH-CN">s</span><span lang=3D"EN-US"> and
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">network</sp=
an><span lang=3D"EN-US">
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">c</span><sp=
an lang=3D"EN-US">apabilities</span><span lang=3D"EN-US" style=3D"mso-fareas=
t-language:ZH-CN">.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">Network Slice Instance (NSI):=
 </span></b><span lang=3D"EN-US">is an instance created from a Network Slice=
 Template (NST).</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH=
-CN"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><b><span lang=3D"EN-US">Network Slice: </span></b><sp=
an lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN">i</span><span lang=3D=
"EN-US">s a concept describing a system behaviour which is implemented via N=
etwork Slice Instance(s).
</span><span lang=3D"EN-US" style=3D"mso-fareast-language:ZH-CN"><o:p></o:p>=
</span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText">BR,<o:p></o:p></p>
<p class=3D"MsoPlainText">Kashif<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"mso-fareast-language=
:NO-BOK">-----Original Message-----<br>
From: Nfvrg [<a href=3D"mailto:nfvrg-bounces@irtf.org">mailto:nfvrg-bounces@=
irtf.org</a>] On Behalf Of Jeff Tantsura<br>
Sent: 1. november 2016 22:26<br>
To: Stewart Bryant<br>
Cc: Dongjie (Jimmy); Mach Chen; Joe Touch; <a href=3D"mailto:draft-ietf-teas=
-actn-framework@ietf.org">draft-ietf-teas-actn-framework@ietf.org</a>; <a hr=
ef=3D"mailto:draft-galis-anima-autonomic-slice-networking@ietf.org">draft-ga=
lis-anima-autonomic-slice-networking@ietf.org</a>; <a href=3D"mailto:nfvrg@i=
rtf.org">nfvrg@irtf.org</a>; <a href=3D"mailto:5gangip@ietf.org">5gangip@iet=
f.org</a>; <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a>; <a href=3D=
"mailto:draft-vonhugo-5gangip-ip-issues@ietf.org">draft-vonhugo-5gangip-ip-i=
ssues@ietf.org</a>; <a href=3D"mailto:draft-xuan-dmm-multicast-mobility-slic=
ing@ietf.org">draft-xuan-dmm-multicast-mobility-slicing@ietf.org</a><br>
Subject: Re: [Nfvrg] [Detnet] [5gangip] Network Slicing - a suggestion that w=
e meet to discuss in Seoul</span></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Network slicing has become de facto standard termi=
nology in context of 5G.<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">It would be rather useful to:<o:p></o:p></p>
<p class=3D"MsoPlainText">-agree on terminology<o:p></o:p></p>
<p class=3D"MsoPlainText">-discuss data modeling, interrelated technologies -=
 radio, packet core, transport, optical to mention some and how they could w=
ork together/form in a "slice"<o:p></o:p></p>
<p class=3D"MsoPlainText">-bring together experts in these, rather disjointe=
d domains.<o:p></o:p></p>
<p class=3D"MsoPlainText">-many other things <o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">Regards,<o:p></o:p></p>
<p class=3D"MsoPlainText">Jeff<o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; On Nov 1, 2016, at 12:39=
, Stewart Bryant &lt;</span><a href=3D"mailto:stewart.bryant@gmail.com"><spa=
n lang=3D"EN-US" style=3D"color:windowtext;text-decoration:none">stewart.bry=
ant@gmail.com</span></a><span lang=3D"EN-US">&gt;
 wrote:<o:p></o:p></span></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; On 01/11/2016 16:55, Joe Touch wrote:<o:p=
></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; Hi, all,<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; On 11/1/2016 8:21 AM, Stewart Bryant w=
rote:<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; We were trying to pull together a pro=
blem statement for network
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; slicing in a 5G context to understand=
 how well the current IETF
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; protocols address this problem, what t=
heir short comings might be,
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; and what IETF work is necessary to ha=
ve a deployable protocol suite
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt;&gt; to address this need.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; I've seen this term around for a while, a=
nd continue to consider it
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; nonsensical.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; It originally referred to a way of cuttin=
g OS resources and tying
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; them to a distributed system in PlanetLab=
, which had no support for
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; network virtualization. It has since been=
 used to refer to E2E
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; virtual nets (distinct from VPNs, which o=
ften tether individual hosts
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; to a private net over the public Internet=
), but all networks have
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; always had that capability.<o:p></o:p></p=
>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; IMO, this term isn't related to the Inter=
net architecture at all. It
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; needs to correctly tie the existing netwo=
rk overlays that the
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; Internet has supported for a very long ti=
me to OS resources.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; I.e., most of the work in defining "netwo=
rk slicing" needs to happen
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; inside the OS, which is out of scope for t=
he IETF. A properly defined
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; E2E virtual network terminates at (virtua=
l) network interfaces, which
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; is compatible with either a sliced OS or a=
 non-sliced OS.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; Joe<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt;&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; Joe, we possibly have different ideas as to w=
hat network slicing is.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; My assumption is that it is a way that we can=
 create multiple
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; virtually networks over a common base network=
 with a higher degree of
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; isolation between VPNs and much higher perfor=
mance guarantees than we currently achieve.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; If we need a new name, we need a new name, bu=
t the concept does not
<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; seem to align with the definition you hints a=
t.<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; - Stewart<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; _____________________________________________=
__<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; detnet mailing list<o:p></o:p></p>
<p class=3D"MsoPlainText">&gt; <a href=3D"mailto:detnet@ietf.org"><span styl=
e=3D"color:windowtext;text-decoration:none">detnet@ietf.org</span></a><o:p><=
/o:p></p>
<p class=3D"MsoPlainText">&gt; <a href=3D"https://www.ietf.org/mailman/listi=
nfo/detnet">
<span style=3D"color:windowtext;text-decoration:none">https://www.ietf.org/m=
ailman/listinfo/detnet</span></a><o:p></o:p></p>
<p class=3D"MsoPlainText"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoPlainText">_______________________________________________<o:=
p></o:p></p>
<p class=3D"MsoPlainText">Nfvrg mailing list<o:p></o:p></p>
<p class=3D"MsoPlainText"><a href=3D"mailto:Nfvrg@irtf.org"><span style=3D"c=
olor:windowtext;text-decoration:none">Nfvrg@irtf.org</span></a><o:p></o:p></=
p>
<p class=3D"MsoPlainText"><a href=3D"https://www.irtf.org/mailman/listinfo/n=
fvrg"><span style=3D"color:windowtext;text-decoration:none">https://www.irtf=
.org/mailman/listinfo/nfvrg</span></a><o:p></o:p></p>
</div>


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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 11/1/2016 12:39 PM, Stewart Bryant wrote:
> Joe, we possibly have different ideas as to what network slicing is.
>
> My assumption is that it is a way that we can create multiple
> virtually networks
> over a common base network with a higher degree of isolation between
> VPNs and much higher performance guarantees than we currently achieve.
>
> If we need a new name, we need a new name, but the concept does not seem
> to align with the definition you hints at. 

Right. That's because you're describing an overlay.

Overlays have varying degrees of isolation and performance (and
isolation and performance assurance), and always have.

There's no new term needed for that.

Joe


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Cc: "Dongjie \(Jimmy\)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>, draft-ietf-teas-actn-framework@ietf.org, draft-galis-anima-autonomic-slice-networking@ietf.org, nfvrg@irtf.org, 5gangip@ietf.org, Stewart Bryant <stewart.bryant@gmail.com>, detnet@ietf.org, draft-vonhugo-5gangip-ip-issues@ietf.org, draft-xuan-dmm-multicast-mobility-slicing@ietf.org
Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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> On Nov 1, 2016, at 2:25 PM, Jeff Tantsura <jefftant.ietf@gmail.com> wrote:=

>=20
> Network slicing has become de facto standard terminology in context of 5G.=

>=20
> It would be rather useful to:
> -agree on terminology=20

In that vein, if you're familiar with 5G terminology, can you explain how "n=
etwork slicing" differs from overlay provisioning? (Where provisioning is th=
e more commonly used IETF term for configuring resources of a network to ens=
ure predictable service).

Joe


> -discuss data modeling, interrelated technologies - radio, packet core, tr=
ansport, optical to mention some and how they could work together/form in a "=
slice"
> -bring together experts in these, rather disjointed domains.
> -many other things=20
>=20
> Regards,
> Jeff
>=20
>> On Nov 1, 2016, at 12:39, Stewart Bryant <stewart.bryant@gmail.com> wrote=
:
>>=20
>>=20
>>=20
>>> On 01/11/2016 16:55, Joe Touch wrote:
>>> Hi, all,
>>>=20
>>>=20
>>>> On 11/1/2016 8:21 AM, Stewart Bryant wrote:
>>>> We were trying to pull together a problem statement for network slicing=

>>>> in a 5G context to understand how well the current IETF protocols
>>>> address this problem, what their short comings might be, and what IETF
>>>> work is necessary to have a deployable protocol suite to address this
>>>> need.
>>> I've seen this term around for a while, and continue to consider it
>>> nonsensical.
>>>=20
>>> It originally referred to a way of cutting OS resources and tying them
>>> to a distributed system in PlanetLab, which had no support for network
>>> virtualization. It has since been used to refer to E2E virtual nets
>>> (distinct from VPNs, which often tether individual hosts to a private
>>> net over the public Internet), but all networks have always had that
>>> capability.
>>>=20
>>> IMO, this term isn't related to the Internet architecture at all. It
>>> needs to correctly tie the existing network overlays that the Internet
>>> has supported for a very long time to OS resources.
>>>=20
>>> I.e., most of the work in defining "network slicing" needs to happen
>>> inside the OS, which is out of scope for the IETF. A properly defined
>>> E2E virtual network terminates at (virtual) network interfaces, which is=

>>> compatible with either a sliced OS or a non-sliced OS.
>>>=20
>>> Joe
>>>=20
>>=20
>> Joe, we possibly have different ideas as to what network slicing is.
>>=20
>> My assumption is that it is a way that we can create multiple virtually n=
etworks
>> over a common base network with a higher degree of isolation between
>> VPNs and much higher performance guarantees than we currently achieve.
>>=20
>> If we need a new name, we need a new name, but the concept does not seem
>> to align with the definition you hints at.
>>=20
>> - Stewart
>>=20
>>=20
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: Joe Touch <touch@isi.edu>, Stewart Bryant <stewart.bryant@gmail.com>, "5gangip@ietf.org" <5gangip@ietf.org>, "detnet@ietf.org" <detnet@ietf.org>, "nfvrg@irtf.org" <nfvrg@irtf.org>, "draft-galis-anima-autonomic-slice-networking@ietf.org" <draft-galis-anima-autonomic-slice-networking@ietf.org>, "draft-vonhugo-5gangip-ip-issues@ietf.org" <draft-vonhugo-5gangip-ip-issues@ietf.org>, "draft-xuan-dmm-multicast-mobility-slicing@ietf.org" <draft-xuan-dmm-multicast-mobility-slicing@ietf.org>, "draft-ietf-teas-actn-framework@ietf.org" <draft-ietf-teas-actn-framework@ietf.org>
Thread-Topic: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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Looks correct, Joe, but then overlays as we traditionally see them do not n=
ecessarily provide the degree of isolation that we seem to be after here.

And this is where DetNet comes into play. At the extreme of the definition,=
 a deterministic flow will traverse the network is such a fashion that the =
influence from other flows is not observable on that flow, e.g., no jitter =
and no congestion loss induced by other flows holding or clogging a link so=
mewhere down in the fabric. Which means that one overlay will experience th=
e same connectivity as if the nodes that compose it were physically meshed =
with serial wires.=20

Cheers,

Pascal

-----Original Message-----
From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Joe Touch
Sent: mardi 1 novembre 2016 23:35
To: Stewart Bryant <stewart.bryant@gmail.com>; 5gangip@ietf.org; detnet@iet=
f.org; nfvrg@irtf.org; draft-galis-anima-autonomic-slice-networking@ietf.or=
g; draft-vonhugo-5gangip-ip-issues@ietf.org; draft-xuan-dmm-multicast-mobil=
ity-slicing@ietf.org; draft-ietf-teas-actn-framework@ietf.org
Cc: Dongjie (Jimmy) <jie.dong@huawei.com>; Mach Chen <mach.chen@huawei.com>
Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet=
 to discuss in Seoul



On 11/1/2016 12:39 PM, Stewart Bryant wrote:
> Joe, we possibly have different ideas as to what network slicing is.
>
> My assumption is that it is a way that we can create multiple=20
> virtually networks over a common base network with a higher degree of=20
> isolation between VPNs and much higher performance guarantees than we=20
> currently achieve.
>
> If we need a new name, we need a new name, but the concept does not=20
> seem to align with the definition you hints at.

Right. That's because you're describing an overlay.

Overlays have varying degrees of isolation and performance (and isolation a=
nd performance assurance), and always have.

There's no new term needed for that.

Joe

_______________________________________________
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https://www.ietf.org/mailman/listinfo/detnet


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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: nfinn <nfinn@alumni.caltech.edu>, "Grossman, Ethan A." <eagros@dolby.com>
Thread-Topic: [Detnet] DetNet Use Case Statements - How to express app time accuracy and reliability needs?
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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> On Nov 2, 2016, at 3:40 AM, Pascal Thubert (pthubert) <pthubert@cisco.com>=
 wrote:
>=20
> Looks correct, Joe, but then overlays as we traditionally see them do not n=
ecessarily provide the degree of isolation that we seem to be after here.

It seems like you're just noting that most Internet overlays don't bother wi=
th provisioning...

>=20
> And this is where DetNet comes into play. At the extreme of the definition=
, a deterministic flow will traverse the network is such a fashion that the i=
nfluence from other flows is not observable on that flow, e.g., no jitter an=
d no congestion loss induced by other flows holding or clogging a link somew=
here down in the fabric. Which means that one overlay will experience the sa=
me connectivity as if the nodes that compose it were physically meshed with s=
erial wires.=20

If you're talking about a flow on an otherwise empty overlay, that is just a=
 fully provisioned overlay. If you're talking about multiple flows within an=
 overlay being isolated this way, it's not and Internet overlay. Maybe an AT=
M overlay.

But these are still IMO examples of provisioning - the kind we have been don=
g since the phone network for over 50 years. No need for new marketing terms=
.

Joe

>=20
> Cheers,
>=20
> Pascal
>=20
> -----Original Message-----
> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Joe Touch
> Sent: mardi 1 novembre 2016 23:35
> To: Stewart Bryant <stewart.bryant@gmail.com>; 5gangip@ietf.org; detnet@ie=
tf.org; nfvrg@irtf.org; draft-galis-anima-autonomic-slice-networking@ietf.or=
g; draft-vonhugo-5gangip-ip-issues@ietf.org; draft-xuan-dmm-multicast-mobili=
ty-slicing@ietf.org; draft-ietf-teas-actn-framework@ietf.org
> Cc: Dongjie (Jimmy) <jie.dong@huawei.com>; Mach Chen <mach.chen@huawei.com=
>
> Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we mee=
t to discuss in Seoul
>=20
>=20
>=20
>> On 11/1/2016 12:39 PM, Stewart Bryant wrote:
>> Joe, we possibly have different ideas as to what network slicing is.
>>=20
>> My assumption is that it is a way that we can create multiple=20
>> virtually networks over a common base network with a higher degree of=20
>> isolation between VPNs and much higher performance guarantees than we=20
>> currently achieve.
>>=20
>> If we need a new name, we need a new name, but the concept does not=20
>> seem to align with the definition you hints at.
>=20
> Right. That's because you're describing an overlay.
>=20
> Overlays have varying degrees of isolation and performance (and isolation a=
nd performance assurance), and always have.
>=20
> There's no new term needed for that.
>=20
> Joe
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet


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From: Behcet Sarikaya <sarikaya2012@gmail.com>
Date: Wed, 2 Nov 2016 10:23:31 -0500
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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Folks, sorry I reduced the cc list, our list distributor somehow does
not like long cc lists :-)


On Wed, Nov 2, 2016 at 9:05 AM, Joe Touch <touch@isi.edu> wrote:
>
>
>> On Nov 2, 2016, at 3:40 AM, Pascal Thubert (pthubert) <pthubert@cisco.co=
m> wrote:
>>
>> Looks correct, Joe, but then overlays as we traditionally see them do no=
t necessarily provide the degree of isolation that we seem to be after here=
.
>
> It seems like you're just noting that most Internet overlays don't bother=
 with provisioning...
>
>>
>> And this is where DetNet comes into play. At the extreme of the definiti=
on, a deterministic flow will traverse the network is such a fashion that t=
he influence from other flows is not observable on that flow, e.g., no jitt=
er and no congestion loss induced by other flows holding or clogging a link=
 somewhere down in the fabric. Which means that one overlay will experience=
 the same connectivity as if the nodes that compose it were physically mesh=
ed with serial wires.
>
> If you're talking about a flow on an otherwise empty overlay, that is jus=
t a fully provisioned overlay. If you're talking about multiple flows withi=
n an overlay being isolated this way, it's not and Internet overlay. Maybe =
an ATM overlay.
>
> But these are still IMO examples of provisioning - the kind we have been =
dong since the phone network for over 50 years. No need for new marketing t=
erms

 I agree with Joe.
I have a question though:
I think overlays are based on tunneling at the IP level, right?
Detnet flows that Pascal is talking about require Time Sensitive
Networking (TSN) switch support at Layer 2 as per 802.1 work.
I am not sure if detnet will end up defining a tunneling based IP layer for=
 TSN?


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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 11/2/2016 8:23 AM, Behcet Sarikaya wrote:
> I have a question though:
> I think overlays are based on tunneling at the IP level, right?
Internet overlays are, but there are other overlays too.

> Detnet flows that Pascal is talking about require Time Sensitive
> Networking (TSN) switch support at Layer 2 as per 802.1 work.

A tunnel is a link (see draft-ietf-intarea-tunnels). Any link that
supports the provisioning requirements of Detnet should suffice.

> I am not sure if detnet will end up defining a tunneling based IP layer for TSN?
It clearly *can*, as long as it has a way to ensure the provisioning.
But that's true for using Detnet over any link technology - whether
based on a tunnel or not.

Joe


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From: Jouni Korhonen <jouni.korhonen@broadcom.com>
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References: <8620772c4ff1410ca6281384696a791b@DLB-XCHPW03.dolby.net> <89124517-CB41-4AAD-A6D9-96DBB57324E3@alumni.caltech.edu> <bc8006a4-fb11-121a-f52b-9d10d34ab014@nokia.com> <2c9cfd1f09b84ad4808871c9bcaf540b@XCH-RCD-001.cisco.com> <6211952161fe433a93219e8fe14f88bb@DLB-XCHPW03.dolby.net> <0CDAEFE4-1125-4C93-B9AB-F090596EE66B@alumni.caltech.edu>
To: nfinn <nfinn@alumni.caltech.edu>
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Cc: "Grossman, Ethan A." <eagros@dolby.com>, Pascal Thubert <pthubert@cisco.com>, "detnet@ietf.org" <detnet@ietf.org>, Olivier Marce <Olivier.Marce@nokia.com>
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app time accuracy and reliability needs?
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looks good to me.

- jouni

> On Oct 31, 2016, at 11:59 PM, nfinn <nfinn@alumni.caltech.edu> wrote:
>=20
> I think that=E2=80=99s a very good summary of my preferred approach.  =
Is it satisfactory for you?
>=20
> =E2=80=94 Norm
>=20
>> On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. <eagros@dolby.com> =
wrote:
>>=20
>> Hi Pascal, Olivier, Norm, WG,
>> So the consensus is, to paraphrase Norm:=20
>>=20
>> 1) Make sure that the time protocols are able to report, along with =
the time, the accuracy provided. =20
>> 2) The application will decide whether that is sufficient. =20
>> 3) The accuracy reported will likely consist of several parameters =
(frequency accuracy, absolute accuracy, etc.). =20
>> 4) Different time protocols may have different parameters for =
accuracy. =20
>> 5) An application might care about one or more of those parameters. =20=

>> 6) An application might then operate in one of various modes, =
depending on the accuracy provided. =20
>>=20
>> If anyone has any other understanding or input, please reply.
>> Thanks,
>> Ethan.
>>=20
>> -----Original Message-----
>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Pascal =
Thubert (pthubert)
>> Sent: Tuesday, October 11, 2016 4:29 AM
>> To: Olivier Marce; detnet@ietf.org
>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
time accuracy and reliability needs?
>>=20
>> This is my understanding too, Olivier.=20
>>=20
>> Also, time-related work is done elsewhere, whether one thinks of IETF =
or outside the IETF. We do not want to be taken in the middle of that =
storm.
>> Best can do is probably state requirements, but for all I know we are =
using time as an information provided by external means, as opposed to =
managing it.
>>=20
>> Cheers,
>>=20
>> Pascal
>>=20
>> -----Original Message-----
>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Olivier =
Marce
>> Sent: jeudi 6 octobre 2016 12:05
>> To: detnet@ietf.org
>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
time accuracy and reliability needs?
>>=20
>> Hi,
>> I'm in favor of Norm' position: DetNet should concentrate on  =
reliable, on-time delivery of packets. Time accuracy is required for =
DetNet but out of scope, as many solutions exist and is not only a =
networking topic.
>> At most, DetNet could provide some reference examples on how =
providing required time accuracy.
>>=20
>>=20
>> Regards
>>=20
>> Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :
>>> Interesting question.
>>>=20
>>> It seems more useful to me to make sure that the time protocols are=20=

>>> able to report, along with the time, the accuracy provided.  The=20
>>> application can then decide whether that is sufficient.  The =
accuracy=20
>>> reported will likely consist of several parameters (frequency=20
>>> accuracy, absolute accuracy, etc.).  Different time protocols may =
have=20
>>> different parameters for accuracy.  The application might worried=20
>>> about one or the other of those parameters.  It might operate in=20
>>> different modes, depending on the accuracy provided.  I don't see =
the=20
>>> value in moving the decision point anywhere else.
>>>=20
>>> With DetNet, one can imagine a bandwidth reservation crossing a=20
>>> boundary between two different master clock domains.  My inclination=20=

>>> would be to disallow that, at least for now.  Given an application=20=

>>> that runs for long enough, any frequency difference between source =
and=20
>>> sink will eventually cause starvation or overflow.
>>>=20
>>> All that said, let's suppose that you have a solid use case that is=20=

>>> expected to *try* to run across clock domain boundaries, and we want=20=

>>> to prevent that when it won't work.  This could be solved by an=20
>>> application-level protocol that exchanges clock domain information.
>>> This could be solved by configuring the network controller to=20
>>> disallow domain crossings.  This could be handled by parameters in =
the=20
>>> reservation protocol, as you suggest, so that the controller can =
allow=20
>>> some reservations but not others.  I'll leave it to timing experts =
to=20
>>> pick some number of appropriate parameters.
>>>=20
>>> One last consideration - Are you sure that all applications that =
have=20
>>> these timing requirements also require bandwidth reservations?  I'm=20=

>>> not sure of that.  And, if not, a protocol separate from the =
bandwidth=20
>>> reservation might be indicated.
>>>=20
>>> - Norm
>>>=20
>>>> On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A. <eagros@dolby.com=20
>>>> <mailto:eagros@dolby.com>> wrote:
>>>>=20
>>>> Hi Folks,
>>>>=20
>>>> As of our IETF 96 meeting there were still a couple of Use Case=20
>>>> Statements that I would like clarity on. Here's the first, =
remaining=20
>>>> to follow in separate emails.
>>>>=20
>>>> Question:
>>>> How will an application express its time accuracy and reliability=20=

>>>> needs? Is that within scope of DetNet?
>>>>=20
>>>> Discussion:
>>>> In AVB/TSN when an application (talker) attempts to make a stream=20=

>>>> reservation it must state how much bandwidth that stream =
reservation=20
>>>> requires. Presumably in a LAN this is sufficient since a LAN=20
>>>> presumably has consistent time accuracy and reliability metrics.
>>>>=20
>>>> For DetNet, in which we support interconnected DetNet networks and=20=

>>>> have widely varying requirements for timing accuracy and =
reliability=20
>>>> depending on the use case, it appears to me that we need to allow =
an=20
>>>> application to provide this kind of information to the network, and =
a=20
>>>> way for the network to either agree or decline to provide the=20
>>>> requested service (analogous to AVB/TSN accepting or declining a=20
>>>> stream reservation based on the bandwidth requested).
>>>>=20
>>>> We have had some discussion about this (see below) but nothing near=20=

>>>> consensus. Other thoughts from anyone?
>>>> Ethan.
>>>>=20
>>>> --------------------------------
>>>> Discussion, oldest item first:
>>>>=20
>>>> Ethan Grossman wrote:
>>>> Timekeeping - the only explicit DetNet Ask for this is in the use=20=

>>>> cases is in M2M as "Precise time synchronization accuracy (1us)" =
and=20
>>>> I think the intent (as in other use cases) is that the DetNet Ask =
is=20
>>>> for a way to specify the required accuracy, not how to achieve that =
accuracy.
>>>>=20
>>>> Norm Finn wrote:
>>>> Timekeeping is an essential part of many, probably most, of the=20
>>>> applications that also find DetNet useful.  That having been said, =
so=20
>>>> is protection against EMI and electrical power saving. Let's=20
>>>> concentrate DetNet on reliable, on-time delivery of packets.  I'm =
not=20
>>>> even sure that "a way to specify the required accuracy" need be in =
scope.
>>>>=20
>>>> Rodney Cummings wrote:
>>>> I rarely disagree with Norm, but on this point I'll have to quibble =
a bit.
>>>> I agree that we don't need DetNet to specify how time sync is=20
>>>> accomplished. There are plenty of IEEE 1588 techniques (and =
similar)=20
>>>> for that purpose.
>>>> I also agree that we should concentrate on reliable, on-time =
delivery=20
>>>> of packets (i.e. worst-case latency).
>>>> If I don't know how accurate my time sync is, then how do I know =
when=20
>>>> a packet is delivered on time? If I don't know the reliability of =
my=20
>>>> time sync, how can I reliably measure that packet delivery?
>>>> Almost all (if not 100%) of DetNet use cases require time sync at =
the=20
>>>> end systems to some degree of accuracy. I agree that we don't need =
to=20
>>>> address the implementation of that time sync, but the application=20=

>>>> requirements are needed for time sync (including reliability) just =
as=20
>>>> much as for packet delivery.
>>>> --------------------------------
>>>>=20
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org <mailto:detnet@ietf.org>=20
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>=20
>>>=20
>>>=20
>>> _______________________________________________
>>> detnet mailing list
>>> detnet@ietf.org
>>> https://www.ietf.org/mailman/listinfo/detnet
>>>=20
>>=20
>> --
>> Olivier Marc=C3=A9
>> Nokia Bell Labs France
>> "we need to guard against increased levels of reporting and other =
requirements that distract you from doing what you really need to be =
doing." Rajeev Suri, Nokia CEO, April 2016
>>=20
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>>=20
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>>=20
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet

--
Jouni Korhonen, Broadcom Ltd.
M: +1-408-391-7160


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To: Jouni Korhonen <jouni.korhonen@broadcom.com>, nfinn <nfinn@alumni.caltech.edu>
Thread-Topic: [Detnet] DetNet Use Case Statements - How to express app time accuracy and reliability needs?
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Cc: "Grossman, Ethan A." <eagros@dolby.com>, "Pascal Thubert \(pthubert\)" <pthubert@cisco.com>, "detnet@ietf.org" <detnet@ietf.org>, Olivier Marce <Olivier.Marce@nokia.com>
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app time accuracy and reliability needs?
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Cc: Jouni Korhonen <jouni.korhonen@broadcom.com>, "Grossman, Ethan A." <eagros@dolby.com>, Pascal Thubert <pthubert@cisco.com>, "detnet@ietf.org" <detnet@ietf.org>, Olivier Marce <Olivier.Marce@nokia.com>
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app time accuracy and reliability needs?
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Patrick,

If you want to work on this approach, I don=E2=80=99t want to stop you.  =
But, it looks to me that it increases the number of options (and thus, =
everyone=E2=80=99s work load) with no benefit gained.

If the application has time requirements, I assume that it is able to =
synchronize its clock using one or more specific protocols, and =
therefore knows how to interpret each of those protocols=E2=80=99 =
accuracy information.  Problem solved.  Teaching the application to ask =
the PCE 1) requires that a PCE b e present, and 2) requires the =
application to implement a query/response of some kind to express its =
requirements and understand the answer.  Keep in mind that the answer is =
not always =E2=80=9Cyes/no=E2=80=9D.  Perhaps the application can =
operate in different modes, depending on clock accuracy.

Of course, if you or any expert in the time protocols tell us that only =
a centralized controller can make the determination for a significant =
class of use cases, I=E2=80=99m ready to change my mind.

=E2=80=94 Norm

> On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) =
<pwetterw@cisco.com> wrote:
>=20
> I=E2=80=99m just wondering if this has to be reported to the =
application or to the PCE in case of central computing?
>=20
> Application asks for the accuracy then the PCE answers if this is =
possible or not.
>=20
> We may have both cases.
>=20
> Thanks,
>=20
> Patrick
>=20
> On 02/11/2016, 16:43, "detnet on behalf of Jouni Korhonen" =
<detnet-bounces@ietf.org on behalf of jouni.korhonen@broadcom.com> =
wrote:
>=20
>    looks good to me.
>=20
>    - jouni
>=20
>> On Oct 31, 2016, at 11:59 PM, nfinn <nfinn@alumni.caltech.edu> wrote:
>>=20
>> I think that=E2=80=99s a very good summary of my preferred approach.  =
Is it satisfactory for you?
>>=20
>> =E2=80=94 Norm
>>=20
>>> On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. <eagros@dolby.com> =
wrote:
>>>=20
>>> Hi Pascal, Olivier, Norm, WG,
>>> So the consensus is, to paraphrase Norm:=20
>>>=20
>>> 1) Make sure that the time protocols are able to report, along with =
the time, the accuracy provided. =20
>>> 2) The application will decide whether that is sufficient. =20
>>> 3) The accuracy reported will likely consist of several parameters =
(frequency accuracy, absolute accuracy, etc.). =20
>>> 4) Different time protocols may have different parameters for =
accuracy. =20
>>> 5) An application might care about one or more of those parameters. =20=

>>> 6) An application might then operate in one of various modes, =
depending on the accuracy provided. =20
>>>=20
>>> If anyone has any other understanding or input, please reply.
>>> Thanks,
>>> Ethan.
>>>=20
>>> -----Original Message-----
>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Pascal =
Thubert (pthubert)
>>> Sent: Tuesday, October 11, 2016 4:29 AM
>>> To: Olivier Marce; detnet@ietf.org
>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?
>>>=20
>>> This is my understanding too, Olivier.=20
>>>=20
>>> Also, time-related work is done elsewhere, whether one thinks of =
IETF or outside the IETF. We do not want to be taken in the middle of =
that storm.
>>> Best can do is probably state requirements, but for all I know we =
are using time as an information provided by external means, as opposed =
to managing it.
>>>=20
>>> Cheers,
>>>=20
>>> Pascal
>>>=20
>>> -----Original Message-----
>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Olivier =
Marce
>>> Sent: jeudi 6 octobre 2016 12:05
>>> To: detnet@ietf.org
>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?
>>>=20
>>> Hi,
>>> I'm in favor of Norm' position: DetNet should concentrate on  =
reliable, on-time delivery of packets. Time accuracy is required for =
DetNet but out of scope, as many solutions exist and is not only a =
networking topic.
>>> At most, DetNet could provide some reference examples on how =
providing required time accuracy.
>>>=20
>>>=20
>>> Regards
>>>=20
>>> Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :
>>>> Interesting question.
>>>>=20
>>>> It seems more useful to me to make sure that the time protocols are=20=

>>>> able to report, along with the time, the accuracy provided.  The=20
>>>> application can then decide whether that is sufficient.  The =
accuracy=20
>>>> reported will likely consist of several parameters (frequency=20
>>>> accuracy, absolute accuracy, etc.).  Different time protocols may =
have=20
>>>> different parameters for accuracy.  The application might worried=20=

>>>> about one or the other of those parameters.  It might operate in=20
>>>> different modes, depending on the accuracy provided.  I don't see =
the=20
>>>> value in moving the decision point anywhere else.
>>>>=20
>>>> With DetNet, one can imagine a bandwidth reservation crossing a=20
>>>> boundary between two different master clock domains.  My =
inclination=20
>>>> would be to disallow that, at least for now.  Given an application=20=

>>>> that runs for long enough, any frequency difference between source =
and=20
>>>> sink will eventually cause starvation or overflow.
>>>>=20
>>>> All that said, let's suppose that you have a solid use case that is=20=

>>>> expected to *try* to run across clock domain boundaries, and we =
want=20
>>>> to prevent that when it won't work.  This could be solved by an=20
>>>> application-level protocol that exchanges clock domain information.
>>>> This could be solved by configuring the network controller to=20
>>>> disallow domain crossings.  This could be handled by parameters in =
the=20
>>>> reservation protocol, as you suggest, so that the controller can =
allow=20
>>>> some reservations but not others.  I'll leave it to timing experts =
to=20
>>>> pick some number of appropriate parameters.
>>>>=20
>>>> One last consideration - Are you sure that all applications that =
have=20
>>>> these timing requirements also require bandwidth reservations?  I'm=20=

>>>> not sure of that.  And, if not, a protocol separate from the =
bandwidth=20
>>>> reservation might be indicated.
>>>>=20
>>>> - Norm
>>>>=20
>>>>> On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A. <eagros@dolby.com=20=

>>>>> <mailto:eagros@dolby.com>> wrote:
>>>>>=20
>>>>> Hi Folks,
>>>>>=20
>>>>> As of our IETF 96 meeting there were still a couple of Use Case=20
>>>>> Statements that I would like clarity on. Here's the first, =
remaining=20
>>>>> to follow in separate emails.
>>>>>=20
>>>>> Question:
>>>>> How will an application express its time accuracy and reliability=20=

>>>>> needs? Is that within scope of DetNet?
>>>>>=20
>>>>> Discussion:
>>>>> In AVB/TSN when an application (talker) attempts to make a stream=20=

>>>>> reservation it must state how much bandwidth that stream =
reservation=20
>>>>> requires. Presumably in a LAN this is sufficient since a LAN=20
>>>>> presumably has consistent time accuracy and reliability metrics.
>>>>>=20
>>>>> For DetNet, in which we support interconnected DetNet networks and=20=

>>>>> have widely varying requirements for timing accuracy and =
reliability=20
>>>>> depending on the use case, it appears to me that we need to allow =
an=20
>>>>> application to provide this kind of information to the network, =
and a=20
>>>>> way for the network to either agree or decline to provide the=20
>>>>> requested service (analogous to AVB/TSN accepting or declining a=20=

>>>>> stream reservation based on the bandwidth requested).
>>>>>=20
>>>>> We have had some discussion about this (see below) but nothing =
near=20
>>>>> consensus. Other thoughts from anyone?
>>>>> Ethan.
>>>>>=20
>>>>> --------------------------------
>>>>> Discussion, oldest item first:
>>>>>=20
>>>>> Ethan Grossman wrote:
>>>>> Timekeeping - the only explicit DetNet Ask for this is in the use=20=

>>>>> cases is in M2M as "Precise time synchronization accuracy (1us)" =
and=20
>>>>> I think the intent (as in other use cases) is that the DetNet Ask =
is=20
>>>>> for a way to specify the required accuracy, not how to achieve =
that accuracy.
>>>>>=20
>>>>> Norm Finn wrote:
>>>>> Timekeeping is an essential part of many, probably most, of the=20
>>>>> applications that also find DetNet useful.  That having been said, =
so=20
>>>>> is protection against EMI and electrical power saving. Let's=20
>>>>> concentrate DetNet on reliable, on-time delivery of packets.  I'm =
not=20
>>>>> even sure that "a way to specify the required accuracy" need be in =
scope.
>>>>>=20
>>>>> Rodney Cummings wrote:
>>>>> I rarely disagree with Norm, but on this point I'll have to =
quibble a bit.
>>>>> I agree that we don't need DetNet to specify how time sync is=20
>>>>> accomplished. There are plenty of IEEE 1588 techniques (and =
similar)=20
>>>>> for that purpose.
>>>>> I also agree that we should concentrate on reliable, on-time =
delivery=20
>>>>> of packets (i.e. worst-case latency).
>>>>> If I don't know how accurate my time sync is, then how do I know =
when=20
>>>>> a packet is delivered on time? If I don't know the reliability of =
my=20
>>>>> time sync, how can I reliably measure that packet delivery?
>>>>> Almost all (if not 100%) of DetNet use cases require time sync at =
the=20
>>>>> end systems to some degree of accuracy. I agree that we don't need =
to=20
>>>>> address the implementation of that time sync, but the application=20=

>>>>> requirements are needed for time sync (including reliability) just =
as=20
>>>>> much as for packet delivery.
>>>>> --------------------------------
>>>>>=20
>>>>> _______________________________________________
>>>>> detnet mailing list
>>>>> detnet@ietf.org <mailto:detnet@ietf.org>=20
>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>=20
>>>>=20
>>>>=20
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>=20
>>>=20
>>> --
>>> Olivier Marc=C3=A9
>>> Nokia Bell Labs France
>>> "we need to guard against increased levels of reporting and other =
requirements that distract you from doing what you really need to be =
doing." Rajeev Suri, Nokia CEO, April 2016
>>>=20
>>> _______________________________________________
>>> detnet mailing list
>>> detnet@ietf.org
>>> https://www.ietf.org/mailman/listinfo/detnet
>>>=20
>>> _______________________________________________
>>> detnet mailing list
>>> detnet@ietf.org
>>> https://www.ietf.org/mailman/listinfo/detnet
>>>=20
>>> _______________________________________________
>>> detnet mailing list
>>> detnet@ietf.org
>>> https://www.ietf.org/mailman/listinfo/detnet
>>=20
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>=20
>    --
>    Jouni Korhonen, Broadcom Ltd.
>    M: +1-408-391-7160
>=20
>    _______________________________________________
>    detnet mailing list
>    detnet@ietf.org
>    https://www.ietf.org/mailman/listinfo/detnet
>=20
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet


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From: Tom Herbert <tom@herbertland.com>
Date: Wed, 2 Nov 2016 10:23:56 -0700
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To: Behcet Sarikaya <sarikaya@ieee.org>
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On Wed, Nov 2, 2016 at 8:23 AM, Behcet Sarikaya <sarikaya2012@gmail.com> wr=
ote:
> Folks, sorry I reduced the cc list, our list distributor somehow does
> not like long cc lists :-)
>
>
> On Wed, Nov 2, 2016 at 9:05 AM, Joe Touch <touch@isi.edu> wrote:
>>
>>
>>> On Nov 2, 2016, at 3:40 AM, Pascal Thubert (pthubert) <pthubert@cisco.c=
om> wrote:
>>>
>>> Looks correct, Joe, but then overlays as we traditionally see them do n=
ot necessarily provide the degree of isolation that we seem to be after her=
e.
>>
>> It seems like you're just noting that most Internet overlays don't bothe=
r with provisioning...
>>
>>>
>>> And this is where DetNet comes into play. At the extreme of the definit=
ion, a deterministic flow will traverse the network is such a fashion that =
the influence from other flows is not observable on that flow, e.g., no jit=
ter and no congestion loss induced by other flows holding or clogging a lin=
k somewhere down in the fabric. Which means that one overlay will experienc=
e the same connectivity as if the nodes that compose it were physically mes=
hed with serial wires.
>>
>> If you're talking about a flow on an otherwise empty overlay, that is ju=
st a fully provisioned overlay. If you're talking about multiple flows with=
in an overlay being isolated this way, it's not and Internet overlay. Maybe=
 an ATM overlay.
>>
>> But these are still IMO examples of provisioning - the kind we have been=
 dong since the phone network for over 50 years. No need for new marketing =
terms
>
>  I agree with Joe.
> I have a question though:
> I think overlays are based on tunneling at the IP level, right?

Not always. For example, ILA is a technique that can be used to create
overlays without tunneling.

> Detnet flows that Pascal is talking about require Time Sensitive
> Networking (TSN) switch support at Layer 2 as per 802.1 work.
> I am not sure if detnet will end up defining a tunneling based IP layer f=
or TSN?
>
> _______________________________________________
> 5gangip mailing list
> 5gangip@ietf.org
> https://www.ietf.org/mailman/listinfo/5gangip


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To: Tom Herbert <tom@herbertland.com>, Behcet Sarikaya <sarikaya@ieee.org>
References: <6761290b-eac5-8241-eb7f-32683fe594a1@gmail.com> <344f12df-4f25-c7ce-ec38-1354f7fca90e@isi.edu> <251f8c92-45f5-00ac-4507-173404df7329@gmail.com> <96fd1dc8-31ea-887b-3ea1-d742758935cd@isi.edu> <0aaf6a442c9941d4baf9b3f0a0003182@XCH-RCD-001.cisco.com> <5210F394-5D68-44C6-8A78-12F80EE19B19@isi.edu> <CAC8QAcfCuySHtVMTnQGHdMNWW9Z3vWfYjAFiBgxCtL0Zwjh1kQ@mail.gmail.com> <CALx6S35i44Bcgh8SGEb-o7Mg=5r_mx6R+9hxGYuWibnB4Dcqdw@mail.gmail.com>
From: Robert Moskowitz <rgm@htt-consult.com>
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Date: Wed, 2 Nov 2016 13:28:36 -0400
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 11/02/2016 01:23 PM, Tom Herbert wrote:
> On Wed, Nov 2, 2016 at 8:23 AM, Behcet Sarikaya <sarikaya2012@gmail.com> wrote:
>> Folks, sorry I reduced the cc list, our list distributor somehow does
>> not like long cc lists :-)
>>
>>
>> On Wed, Nov 2, 2016 at 9:05 AM, Joe Touch <touch@isi.edu> wrote:
>>>
>>>> On Nov 2, 2016, at 3:40 AM, Pascal Thubert (pthubert) <pthubert@cisco.com> wrote:
>>>>
>>>> Looks correct, Joe, but then overlays as we traditionally see them do not necessarily provide the degree of isolation that we seem to be after here.
>>> It seems like you're just noting that most Internet overlays don't bother with provisioning...
>>>
>>>> And this is where DetNet comes into play. At the extreme of the definition, a deterministic flow will traverse the network is such a fashion that the influence from other flows is not observable on that flow, e.g., no jitter and no congestion loss induced by other flows holding or clogging a link somewhere down in the fabric. Which means that one overlay will experience the same connectivity as if the nodes that compose it were physically meshed with serial wires.
>>> If you're talking about a flow on an otherwise empty overlay, that is just a fully provisioned overlay. If you're talking about multiple flows within an overlay being isolated this way, it's not and Internet overlay. Maybe an ATM overlay.
>>>
>>> But these are still IMO examples of provisioning - the kind we have been dong since the phone network for over 50 years. No need for new marketing terms
>>   I agree with Joe.
>> I have a question though:
>> I think overlays are based on tunneling at the IP level, right?
> Not always. For example, ILA is a technique that can be used to create
> overlays without tunneling.

Is and EID/IP mapping within the OS a tunnel?  Or is an implicit tunnel 
the same in important ways as explicit tunnels?



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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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You nailed it, Joe.

Overlays provide connectivity separation.

DetNet provides resource (bandwidth, latency) separation.

They could be used together, 1:1, to provide what some people, perhaps, =
think =E2=80=9Crigid slicing=E2=80=9D should be.

But, overlays for connectivity separation scale to much larger numbers =
of =E2=80=9Cslices" than does resource separation, IMO.  I=E2=80=99m not =
sure there is a match in expectations, so I wouldn=E2=80=99t call DetNet =
=E2=80=9Cthe answer=E2=80=9D.

If you=E2=80=99re talking about rigidly slicing AT&T vs. Verizon vs. =
T-Mobile, no problem.  If you=E2=80=99re talking about rigid slicing per =
VPN, I have doubts.

I think of TSN/DetNet as TDM-over-connectionless.  Expensive, but when =
you need it, nothing else will do.

So, perhaps =E2=80=9Cslicking=E2=80=9D has different meaning, depending =
on the needs of the users of the slices.  It=E2=80=99s just overlays =
where that=E2=80=99s sufficient, and it=E2=80=99s CBR (overlay with a =
rigid BW/latency reservation) for those who need it enough to pay for =
it.

=E2=80=94 Norm

> On Nov 2, 2016, at 8:30 AM, Joe Touch <touch@isi.edu> wrote:
>=20
>=20
>=20
> On 11/2/2016 8:23 AM, Behcet Sarikaya wrote:
>> I have a question though:
>> I think overlays are based on tunneling at the IP level, right?
> Internet overlays are, but there are other overlays too.
>=20
>> Detnet flows that Pascal is talking about require Time Sensitive
>> Networking (TSN) switch support at Layer 2 as per 802.1 work.
>=20
> A tunnel is a link (see draft-ietf-intarea-tunnels). Any link that
> supports the provisioning requirements of Detnet should suffice.
>=20
>> I am not sure if detnet will end up defining a tunneling based IP =
layer for TSN?
> It clearly *can*, as long as it has a way to ensure the provisioning.
> But that's true for using Detnet over any link technology - whether
> based on a tunnel or not.
>=20
> Joe
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet


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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 11/2/2016 10:28 AM, Robert Moskowitz wrote:
>>> I think overlays are based on tunneling at the IP level, right?
>> Not always. For example, ILA is a technique that can be used to create
>> overlays without tunneling.
>
> Is and EID/IP mapping within the OS a tunnel?  Or is an implicit
> tunnel the same in important ways as explicit tunnels?
There are also tunnels that achieve the exact equivalent of
encapsulation through stateful translation and/or header compression. So
it's not always easy to identify what is a tunnel and what is not - the
key is whether it emulates the properties of a link.

Joe

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<html>
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      http-equiv="Content-Type">
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    <br>
    <div class="moz-cite-prefix">On 11/2/2016 10:28 AM, Robert Moskowitz
      wrote:<br>
    </div>
    <blockquote
      cite="mid:a4e91e06-61a1-e3fb-a124-d8ac568cba57@htt-consult.com"
      type="cite">
      <blockquote type="cite" style="color: #000000;">
        <blockquote type="cite" style="color: #000000;">I think overlays
          are based on tunneling at the IP level, right?
          <br>
        </blockquote>
        Not always. For example, ILA is a technique that can be used to
        create
        <br>
        overlays without tunneling.
        <br>
      </blockquote>
      <br>
      Is and EID/IP mapping within the OS a tunnel?  Or is an implicit
      tunnel the same in important ways as explicit tunnels?
      <br>
    </blockquote>
    There are also tunnels that achieve the exact equivalent of
    encapsulation through stateful translation and/or header
    compression. So it's not always easy to identify what is a tunnel
    and what is not - the key is whether it emulates the properties of a
    link.<br>
    <br>
    Joe<br>
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To: Joe Touch <touch@isi.edu>, Tom Herbert <tom@herbertland.com>, Behcet Sarikaya <sarikaya@ieee.org>
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From: Robert Moskowitz <rgm@htt-consult.com>
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Date: Wed, 2 Nov 2016 13:42:17 -0400
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 11/02/2016 01:31 PM, Joe Touch wrote:
>
>
>
> On 11/2/2016 10:28 AM, Robert Moskowitz wrote:
>>>> I think overlays are based on tunneling at the IP level, right?
>>> Not always. For example, ILA is a technique that can be used to create
>>> overlays without tunneling.
>>
>> Is and EID/IP mapping within the OS a tunnel?  Or is an implicit 
>> tunnel the same in important ways as explicit tunnels?
> There are also tunnels that achieve the exact equivalent of 
> encapsulation through stateful translation and/or header compression. 
> So it's not always easy to identify what is a tunnel and what is not - 
> the key is whether it emulates the properties of a link.

'Emulates properties of a link'   Hmmm.  Good way to put a technical 
bound on 'tunneling'.

And it gets down to how it is implemented, not necessarily how it is 
described.

Bob


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    <br>
    <br>
    <div class="moz-cite-prefix">On 11/02/2016 01:31 PM, Joe Touch
      wrote:<br>
    </div>
    <blockquote cite="mid:1763c3f8-0710-5791-1986-3673dad80c71@isi.edu"
      type="cite">
      <meta content="text/html; charset=windows-1252"
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      </p>
      <br>
      <div class="moz-cite-prefix">On 11/2/2016 10:28 AM, Robert
        Moskowitz wrote:<br>
      </div>
      <blockquote
        cite="mid:a4e91e06-61a1-e3fb-a124-d8ac568cba57@htt-consult.com"
        type="cite">
        <blockquote type="cite" style="color: #000000;">
          <blockquote type="cite" style="color: #000000;">I think
            overlays are based on tunneling at the IP level, right? <br>
          </blockquote>
          Not always. For example, ILA is a technique that can be used
          to create <br>
          overlays without tunneling. <br>
        </blockquote>
        <br>
        Is and EID/IP mapping within the OS a tunnel?  Or is an implicit
        tunnel the same in important ways as explicit tunnels? <br>
      </blockquote>
      There are also tunnels that achieve the exact equivalent of
      encapsulation through stateful translation and/or header
      compression. So it's not always easy to identify what is a tunnel
      and what is not - the key is whether it emulates the properties of
      a link.<br>
    </blockquote>
    <br>
    'Emulates properties of a link'   Hmmm.  Good way to put a technical
    bound on 'tunneling'.<br>
    <br>
    And it gets down to how it is implemented, not necessarily how it is
    described.<br>
    <br>
    Bob<br>
    <br>
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From: Tom Herbert <tom@herbertland.com>
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On Wed, Nov 2, 2016 at 10:28 AM, Robert Moskowitz <rgm@htt-consult.com> wrote:
>
>
> On 11/02/2016 01:23 PM, Tom Herbert wrote:
>>
>> On Wed, Nov 2, 2016 at 8:23 AM, Behcet Sarikaya <sarikaya2012@gmail.com>
>> wrote:
>>>
>>> Folks, sorry I reduced the cc list, our list distributor somehow does
>>> not like long cc lists :-)
>>>
>>>
>>> On Wed, Nov 2, 2016 at 9:05 AM, Joe Touch <touch@isi.edu> wrote:
>>>>
>>>>
>>>>> On Nov 2, 2016, at 3:40 AM, Pascal Thubert (pthubert)
>>>>> <pthubert@cisco.com> wrote:
>>>>>
>>>>> Looks correct, Joe, but then overlays as we traditionally see them do
>>>>> not necessarily provide the degree of isolation that we seem to be after
>>>>> here.
>>>>
>>>> It seems like you're just noting that most Internet overlays don't
>>>> bother with provisioning...
>>>>
>>>>> And this is where DetNet comes into play. At the extreme of the
>>>>> definition, a deterministic flow will traverse the network is such a fashion
>>>>> that the influence from other flows is not observable on that flow, e.g., no
>>>>> jitter and no congestion loss induced by other flows holding or clogging a
>>>>> link somewhere down in the fabric. Which means that one overlay will
>>>>> experience the same connectivity as if the nodes that compose it were
>>>>> physically meshed with serial wires.
>>>>
>>>> If you're talking about a flow on an otherwise empty overlay, that is
>>>> just a fully provisioned overlay. If you're talking about multiple flows
>>>> within an overlay being isolated this way, it's not and Internet overlay.
>>>> Maybe an ATM overlay.
>>>>
>>>> But these are still IMO examples of provisioning - the kind we have been
>>>> dong since the phone network for over 50 years. No need for new marketing
>>>> terms
>>>
>>>   I agree with Joe.
>>> I have a question though:
>>> I think overlays are based on tunneling at the IP level, right?
>>
>> Not always. For example, ILA is a technique that can be used to create
>> overlays without tunneling.
>
>
> Is and EID/IP mapping within the OS a tunnel?  Or is an implicit tunnel the
> same in important ways as explicit tunnels?
>
Implicit. For instance, in Linux it is implemented as host routes. For example:

./ip route add 3333::2000:0:0:2/128 encap ila 2222:0:0:2 dev eth0

So sending to destination address 3333::2000:0:0:2 gets translated to
2222:0:0:2:2000:0:0:2. At 2222:0:0:2: host reverse translation is done
to get back to  3333::2000:0:0:2.

Explicit tunnels could be created however there's really not a lot of
things that could be configured specifically for a tunnel. Also, we
expect devices to have large numbers of ILA routes to destinations and
set may be very dynamic, so creating a tunnel instance for each of
those might not scale.

Tom

>


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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 11/2/2016 10:42 AM, Robert Moskowitz wrote:
> ...
> 'Emulates properties of a link'   Hmmm.  Good way to put a technical
> bound on 'tunneling'.
IMO, the only difference between a tunnel and a link is that a link is real.

In every other way, they ought to be defined identically.

> And it gets down to how it is implemented, not necessarily how it is
> described.

Absolutely.

Joe


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From: Joe Touch <touch@isi.edu>
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 11/2/2016 10:31 AM, nfinn wrote:
> You nailed it, Joe.
>
> Overlays provide connectivity separation.
IMO, overlays provide a network out of virtual links. They connect
systems that are not otherwise connected at that layer, the same way any
other layer or network does.

> DetNet provides resource (bandwidth, latency) separation.

That sounds like provisioning when done at the lowest (link/tunnel)
layer, or setting up automated subprovisioning when implemented at upper
layers (e.g., so protocols like RSVP can reserve those resources).

> They could be used together, 1:1, to provide what some people, perhaps, think “rigid slicing” should be.
>
> But, overlays for connectivity separation scale to much larger numbers of “slices" than does resource separation, IMO.  I’m not sure there is a match in expectations, so I wouldn’t call DetNet “the answer”.
Some overlay technologies scale whereas others don't.

I.e., I agree there may be limits to Detnet, but that's just a limit of
an instance of provisioning - not of the concept of provisioning.

Joe


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To: Joe Touch <touch@isi.edu>, Robert Moskowitz <rgm@htt-consult.com>, Tom Herbert <tom@herbertland.com>, Behcet Sarikaya <sarikaya@ieee.org>
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From: Stewart Bryant <stewart.bryant@gmail.com>
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 02/11/2016 17:48, Joe Touch wrote:
> IMO, the only difference between a tunnel and a link is that a link is real.

Well yes and no.

It is rather common to discover a degree of unanticipated virtualisation 
at the next layer down. So if your service provider takes your physical 
link and carries it over their network in a pseudowire, or over OTN is 
your link still a link according to your definition?

Stewart


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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 11/2/2016 11:53 AM, Stewart Bryant wrote:
>
>
> On 02/11/2016 17:48, Joe Touch wrote:
>> IMO, the only difference between a tunnel and a link is that a link
>> is real.
>
> Well yes and no.
>
> It is rather common to discover a degree of unanticipated
> virtualisation at the next layer down. So if your service provider
> takes your physical link and carries it over their network in a
> pseudowire, or over OTN is your link still a link according to your
> definition?
That's precisely the point.

Yes, at that point the link isn't a link anymore, but it is a tunnel.

If they do it right, you won't (and can't) know the difference.

Joe



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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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Hmm..  Sort of.  True for connectivity.  But, if you=E2=80=99re trying =
to guarantee 0 congestion loss and maximum latency, when you replace a =
physical link with a tunnel, the number of buffers you need increases, =
as well as the latency you can guarantee.  Same principle behind the =
math, in that even physical links have finite latency variation.  But =
the quantitative difference is very noticeable.  In particular, given =
the same exact physical network, abstracting some segment of the path as =
a higher-variation logical link will result in a worse end-to-end =
latency guarantee compared to a flat, no-tunnel model, because of =
ingress and/or egress buffers at the ends of the logical link.  At =
least, that=E2=80=99s what my work has led me to conclude.

Such aggregation is necessary for scaling, for sure.  But, I don=E2=80=99t=
 think it comes for free, or is invisible.

=E2=80=94 Norm

On Nov 2, 2016, at 12:01 PM, Joe Touch <touch@isi.edu> wrote:
>=20
>=20
>=20
> On 11/2/2016 11:53 AM, Stewart Bryant wrote:
>>=20
>>=20
>> On 02/11/2016 17:48, Joe Touch wrote:
>>> IMO, the only difference between a tunnel and a link is that a link
>>> is real.
>>=20
>> Well yes and no.
>>=20
>> It is rather common to discover a degree of unanticipated
>> virtualisation at the next layer down. So if your service provider
>> takes your physical link and carries it over their network in a
>> pseudowire, or over OTN is your link still a link according to your
>> definition?
> That's precisely the point.
>=20
> Yes, at that point the link isn't a link anymore, but it is a tunnel.
>=20
> If they do it right, you won't (and can't) know the difference.
>=20
> Joe
>=20
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet


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From: Joe Touch <touch@isi.edu>
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 11/2/2016 3:08 PM, nfinn wrote:
> Hmm..  Sort of.  True for connectivity.  But, if you’re trying to guarantee 0 congestion loss and maximum latency, when you replace a physical link with a tunnel, the number of buffers you need increases, as well as the latency you can guarantee.  
Physical links sometimes have buffers too (analog repeaters, recoders,
etc.).

The need for buffers and latency guarantee always depends on what the
layers below you guarantee and what service they provide.
> Same principle behind the math, in that even physical links have finite latency variation.  But the quantitative difference is very noticeable.  In particular, given the same exact physical network, abstracting some segment of the path as a higher-variation logical link will result in a worse end-to-end latency guarantee compared to a flat, no-tunnel model, because of ingress and/or egress buffers at the ends of the logical link.  At least, that’s what my work has led me to conclude.
A flat, no-tunnel link can still have substantial latency variation -
e.g., when a WDM link is rerouted for call packing.

You may be more familiar with more stable physical links and more
variable tunnels, but that's not an inherent property of either.

> Such aggregation is necessary for scaling, for sure.  But, I don’t think it comes for free, or is invisible.

Nothing is free - including rendering a logical signal into the physical
domain (e.g., a bitstream into 4B/5B encoding). Every time you traverse
from one layer to another (including to the physical), a translation is
required that can introduce the need for buffers and variation in delay
and capacity is *possible*.

Joe


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From: Rex Buddenberg <buddenbergr@gmail.com>
To: Joe Touch <touch@isi.edu>, nfinn <nfinn@alumni.caltech.edu>
Date: Wed, 02 Nov 2016 15:42:14 -0700
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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In QoS discussions, there are tradeoffs.  You're right, nothing is
free.  In most networking situations, bandwidth efficiency must be
traded off for any improvements in latency, jitter and interactivity.  

Given radio, in what real world situations is this tradeoff a good
idea?




On Wed, 2016-11-02 at 15:30 -0700, Joe Touch wrote:
> 
> On 11/2/2016 3:08 PM, nfinn wrote:
> > 
> > Hmm..  Sort of.  True for connectivity.  But, if you’re trying to
> > guarantee 0 congestion loss and maximum latency, when you replace a
> > physical link with a tunnel, the number of buffers you need
> > increases, as well as the latency you can guarantee.  
> Physical links sometimes have buffers too (analog repeaters,
> recoders,
> etc.).
> 
> The need for buffers and latency guarantee always depends on what the
> layers below you guarantee and what service they provide.
> > 
> > Same principle behind the math, in that even physical links have
> > finite latency variation.  But the quantitative difference is very
> > noticeable.  In particular, given the same exact physical network,
> > abstracting some segment of the path as a higher-variation logical
> > link will result in a worse end-to-end latency guarantee compared
> > to a flat, no-tunnel model, because of ingress and/or egress
> > buffers at the ends of the logical link.  At least, that’s what my
> > work has led me to conclude.
> A flat, no-tunnel link can still have substantial latency variation -
> e.g., when a WDM link is rerouted for call packing.
> 
> You may be more familiar with more stable physical links and more
> variable tunnels, but that's not an inherent property of either.
> 
> > 
> > Such aggregation is necessary for scaling, for sure.  But, I don’t
> > think it comes for free, or is invisible.
> Nothing is free - including rendering a logical signal into the
> physical
> domain (e.g., a bitstream into 4B/5B encoding). Every time you
> traverse
> from one layer to another (including to the physical), a translation
> is
> required that can introduce the need for buffers and variation in
> delay
> and capacity is *possible*.
> 
> Joe
> 
> _______________________________________________
> 5gangip mailing list
> 5gangip@ietf.org
> https://www.ietf.org/mailman/listinfo/5gangip


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To: Rex Buddenberg <buddenbergr@gmail.com>, nfinn <nfinn@alumni.caltech.edu>
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From: Joe Touch <touch@isi.edu>
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 11/2/2016 3:42 PM, Rex Buddenberg wrote:
> In QoS discussions, there are tradeoffs.  You're right, nothing is
> free.  In most networking situations, bandwidth efficiency must be
> traded off for any improvements in latency, jitter and interactivity.  
>
> Given radio, in what real world situations is this tradeoff a good
> idea?
I'm not sure what "given radio" means. Tunnels are a way to share a
single channel for multiple networks. Instead of using frequencies,
codes, or other physical representations of the raw data to keep the
information on the shared channel separate, we use headers and addresses
and demux within the logical information stream rather than in the
physical representation.

The trade-off is that a tunnel provides more flexibility than may be
available in the physical channel. But otherwise, they can be as
efficient (or not), as jittery (or not), as high delay (or not),
depending on the implementation of each.

Joe


From nobody Wed Nov  2 16:42:36 2016
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Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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I think we=E2=80=99re pretty much agreeing violently.

=E2=80=94 Norm

> On Nov 2, 2016, at 3:30 PM, Joe Touch <touch@isi.edu> wrote:
>=20
>=20
>=20
> On 11/2/2016 3:08 PM, nfinn wrote:
>> Hmm..  Sort of.  True for connectivity.  But, if you=E2=80=99re =
trying to guarantee 0 congestion loss and maximum latency, when you =
replace a physical link with a tunnel, the number of buffers you need =
increases, as well as the latency you can guarantee. =20
> Physical links sometimes have buffers too (analog repeaters, recoders,
> etc.).
>=20
> The need for buffers and latency guarantee always depends on what the
> layers below you guarantee and what service they provide.
>> Same principle behind the math, in that even physical links have =
finite latency variation.  But the quantitative difference is very =
noticeable.  In particular, given the same exact physical network, =
abstracting some segment of the path as a higher-variation logical link =
will result in a worse end-to-end latency guarantee compared to a flat, =
no-tunnel model, because of ingress and/or egress buffers at the ends of =
the logical link.  At least, that=E2=80=99s what my work has led me to =
conclude.
> A flat, no-tunnel link can still have substantial latency variation -
> e.g., when a WDM link is rerouted for call packing.
>=20
> You may be more familiar with more stable physical links and more
> variable tunnels, but that's not an inherent property of either.
>=20
>> Such aggregation is necessary for scaling, for sure.  But, I don=E2=80=99=
t think it comes for free, or is invisible.
>=20
> Nothing is free - including rendering a logical signal into the =
physical
> domain (e.g., a bitstream into 4B/5B encoding). Every time you =
traverse
> from one layer to another (including to the physical), a translation =
is
> required that can introduce the need for buffers and variation in =
delay
> and capacity is *possible*.
>=20
> Joe
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet


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Cc: "Dongjie \(Jimmy\)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>, draft-xuan-dmm-multicast-mobility-slicing@tools.ietf.org, draft-ietf-teas-actn-framework@tools.ietf.org, nfvrg@irtf.org, draft-galis-anima-autonomic-slice-networking@tools.ietf.org, 5gangip@ietf.org, draft-vonhugo-5gangip-ip-issues@tools.ietf.org, detnet@ietf.org
Subject: Re: [Detnet] [5gangip] Network Slicing - a suggestion that we meet to discuss in Seoul
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This stuff is routine in multi-tennant data centers where you want to
isolate tennants both at the VM level and at the VPN level, so you
need to dice and slice everything from app, os, nic, switches and
links....
lots of hypervisors&NICs support this at scale in that context - it
needs documenting how its managed, the importing into the ietf/5g
world....

On Tue, Nov 1, 2016 at 3:14 PM, Stewart Bryant <stewart.bryant@gmail.com> wrote:
>
> Hi,
>
> We were trying to pull together a problem statement for network slicing
> in a 5G context to understand how well the current IETF protocols address
> this problem, what their short comings might be, and what IETF work is
> necessary to have a deployable protocol suite to address this need.
>
> We have set down our first thoughts in
> https://tools.ietf.org/html/draft-dong-network-slicing-problem-statement-00
>
> We find that there are a number of groups doing similar work throughout the
> IETF.
>
> The following comprehensive draft was directed at the ANIMA WG
> https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-slice-networking/
>
> https://tools.ietf.org/html/draft-vonhugo-5gangip-ip-issues-00
> is a detailed discussion the position of network slicing in a contest of
> next
> generation networks
>
> https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slicing-00
> looks at multicasting in a sliced context
>
> and
>
> https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01
> looks at slicing in a context of traffic engineering.
>
> Our thoughts are that network slicing spans a number of deployment
> scenarios, and has a number of diverse applications, ranging from
> fragile applications, through to providing enhanced security and
> availability.
>
> Elements of the problem and the resultant solution have a close affinity
> to DETNET. There is clearly an affinity with VPN technologies, although
> none of the existing VPNs provide the degree of isolation that we think
> is required.
>
> We note that there seems to be no natural home for all of the aspects
> of this problem.
>
> It therefore seems that if would be a good idea for those interested
> in this problem to get together at some point during IETF to swap notes
> and share our views on the problem space and how to move forward
> with addressing it.
>
> Is there any interest in meeting up to discuss this in Seoul?
>
> Best regards
>
> Stewart/Mach/Jie
>
>
>
>
> _______________________________________________
> 5gangip mailing list
> 5gangip@ietf.org
> https://www.ietf.org/mailman/listinfo/5gangip


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From: Do Truong Xuan <thespring1989@gmail.com>
Date: Thu, 3 Nov 2016 16:37:11 +0900
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To: Stewart Bryant <stewart.bryant@gmail.com>
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Cc: "Dongjie \(Jimmy\)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>, draft-ietf-teas-actn-framework@ietf.org, draft-galis-anima-autonomic-slice-networking@ietf.org, nfvrg@irtf.org, 5gangip@ietf.org, detnet@ietf.org, draft-vonhugo-5gangip-ip-issues@ietf.org, draft-xuan-dmm-multicast-mobility-slicing@ietf.org
Subject: Re: [Detnet] Network Slicing - a suggestion that we meet to discuss in Seoul
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--94eb2c0882b63081d6054060a0b6
Content-Type: text/plain; charset=UTF-8

Hi !

+1

In the next generation network, IETF protocols and functions could be
changed and managed in a different way.
Network slicing is not just normal virtual private network but with
different requirements (high availability, latency ..) and various
functions.
It's worthy describing this topic in IETF too.


Brs,

On Wed, Nov 2, 2016 at 12:21 AM, Stewart Bryant <stewart.bryant@gmail.com>
wrote:

>
> (Resent with correct draft alias)
>
> Hi,
>
> We were trying to pull together a problem statement for network slicing
> in a 5G context to understand how well the current IETF protocols address
> this problem, what their short comings might be, and what IETF work is
> necessary to have a deployable protocol suite to address this need.
>
> We have set down our first thoughts in
> https://tools.ietf.org/html/draft-dong-network-slicing-probl
> em-statement-00
>
> We find that there are a number of groups doing similar work throughout
> the IETF.
>
> The following comprehensive draft was directed at the ANIMA WG
> https://datatracker.ietf.org/doc/draft-galis-anima-autonomic
> -slice-networking/
>
> https://tools.ietf.org/html/draft-vonhugo-5gangip-ip-issues-00
> is a detailed discussion the position of network slicing in a contest of
> next generation networks
>
> https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slicing-00
> looks at multicasting in a sliced context
>
> and
>
> https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01
> looks at slicing in a context of traffic engineering.
>
> Our thoughts are that network slicing spans a number of deployment
> scenarios, and has a number of diverse applications, ranging from
> fragile applications, through to providing enhanced security and
> availability.
>
> Elements of the problem and the resultant solution have a close affinity
> to DETNET. There is clearly an affinity with VPN technologies, although
> none of the existing VPNs provide the degree of isolation that we think
> is required.
>
> We note that there seems to be no natural home for all of the aspects
> of this problem.
>
> It therefore seems that if would be a good idea for those interested
> in this problem to get together at some point during IETF to swap notes
> and share our views on the problem space and how to move forward
> with addressing it.
>
> Is there any interest in meeting up to discuss this in Seoul?
>
> Best regards
>
> Stewart/Mach/Jie
>
>
>
>
>


-- 

*Truong-Xuan, Do*

PHD Candidate

DCN Lab, Soongsil University

(+82) 10 4473 6869

xuan@dcn.ssu.ac.kr

--94eb2c0882b63081d6054060a0b6
Content-Type: text/html; charset=UTF-8
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<div dir=3D"ltr">Hi !<div><br></div><div>+1</div><div><br></div><div>In the=
 next generation network, IETF protocols and functions could be changed and=
 managed in a different way.</div><div>Network slicing is not just normal v=
irtual private network but with different requirements (high availability, =
latency ..) and various functions.=C2=A0</div><div>It&#39;s worthy describi=
ng this topic in IETF too.</div><div><br></div><div><br></div><div>Brs,=C2=
=A0</div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On=
 Wed, Nov 2, 2016 at 12:21 AM, Stewart Bryant <span dir=3D"ltr">&lt;<a href=
=3D"mailto:stewart.bryant@gmail.com" target=3D"_blank">stewart.bryant@gmail=
.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
(Resent with correct draft alias)<br>
<br>
Hi,<br>
<br>
We were trying to pull together a problem statement for network slicing<br>
in a 5G context to understand how well the current IETF protocols address t=
his problem, what their short comings might be, and what IETF work is neces=
sary to have a deployable protocol suite to address this need.<br>
<br>
We have set down our first thoughts in<br>
<a href=3D"https://tools.ietf.org/html/draft-dong-network-slicing-problem-s=
tatement-00" rel=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/ht=
ml/dr<wbr>aft-dong-network-slicing-probl<wbr>em-statement-00</a><br>
<br>
We find that there are a number of groups doing similar work throughout the=
 IETF.<br>
<br>
The following comprehensive draft was directed at the ANIMA WG<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-sli=
ce-networking/" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ie=
tf.org/d<wbr>oc/draft-galis-anima-autonomic<wbr>-slice-networking/</a><br>
<br>
<a href=3D"https://tools.ietf.org/html/draft-vonhugo-5gangip-ip-issues-00" =
rel=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html/dr<wbr>aft=
-vonhugo-5gangip-ip-issues-<wbr>00</a><br>
is a detailed discussion the position of network slicing in a contest of ne=
xt generation networks<br>
<br>
<a href=3D"https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-sl=
icing-00" rel=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html/=
dr<wbr>aft-xuan-dmm-multicast-mobilit<wbr>y-slicing-00</a><br>
looks at multicasting in a sliced context<br>
<br>
and<br>
<br>
<a href=3D"https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01" r=
el=3D"noreferrer" target=3D"_blank">https://tools.ietf.org/html/dr<wbr>aft-=
ietf-teas-actn-framework-<wbr>01</a><br>
looks at slicing in a context of traffic engineering.<br>
<br>
Our thoughts are that network slicing spans a number of deployment<br>
scenarios, and has a number of diverse applications, ranging from<br>
fragile applications, through to providing enhanced security and availabili=
ty.<br>
<br>
Elements of the problem and the resultant solution have a close affinity<br=
>
to DETNET. There is clearly an affinity with VPN technologies, although<br>
none of the existing VPNs provide the degree of isolation that we think<br>
is required.<br>
<br>
We note that there seems to be no natural home for all of the aspects<br>
of this problem.<br>
<br>
It therefore seems that if would be a good idea for those interested<br>
in this problem to get together at some point during IETF to swap notes<br>
and share our views on the problem space and how to move forward<br>
with addressing it.<br>
<br>
Is there any interest in meeting up to discuss this in Seoul?<br>
<br>
Best regards<br>
<br>
Stewart/Mach/Jie<br>
<br>
<br>
<br>
<br>
</blockquote></div><br><br clear=3D"all"><div><br></div>-- <br><div class=
=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><p=
><a name=3D"UNIQUE_ID_SafeHtmlFilter__MailAutoSig"><b>Truong-Xuan, Do</b></=
a></p>

<p>PHD Candidate </p>

<p>DCN Lab, Soongsil University</p>

<p>(+82) 10 4473 6869</p>

<p><a href=3D"mailto:xuan@dcn.ssu.ac.kr" target=3D"_blank">xuan@dcn.ssu.ac.=
kr</a></p></div></div>
</div>

--94eb2c0882b63081d6054060a0b6--


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To: Stewart Bryant <stewart.bryant@gmail.com>, draft-dong-network-slicing-problem-statement@ietf.org
References: <6761290b-eac5-8241-eb7f-32683fe594a1@gmail.com>
From: Lou Berger <lberger@labn.net>
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Date: Thu, 3 Nov 2016 08:29:46 -0400
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Cc: 5gangip@ietf.org, detnet@ietf.org, Mach Chen <mach.chen@huawei.com>, "Dongjie \(Jimmy\)" <jie.dong@huawei.com>
Subject: Re: [Detnet] Network Slicing - a suggestion that we meet to discuss in Seoul
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Circling back to the original question and based on this discussion:

>  Is there any interest in meeting up to discuss this in Seoul?

Please take a look at draft-ietf-detnet-use-cases and see if your use
case is (sufficiently covered).  If not, We can probably squeeze some
time (max 10min) to talk about the additions you'd like to see in the
use-case document as well as recap/close on any aspects of the on-list
discussion that make sense.

Just let us know and we'll see what we can do.

Lou

On 11/1/2016 11:21 AM, Stewart Bryant wrote:
> (Resent with correct draft alias)
>
> Hi,
>
> We were trying to pull together a problem statement for network slicing
> in a 5G context to understand how well the current IETF protocols 
> address this problem, what their short comings might be, and what IETF 
> work is necessary to have a deployable protocol suite to address this need.
>
> We have set down our first thoughts in
> https://tools.ietf.org/html/draft-dong-network-slicing-problem-statement-00
>
> We find that there are a number of groups doing similar work throughout 
> the IETF.
>
> The following comprehensive draft was directed at the ANIMA WG
> https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-slice-networking/
>
> https://tools.ietf.org/html/draft-vonhugo-5gangip-ip-issues-00
> is a detailed discussion the position of network slicing in a contest of 
> next generation networks
>
> https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slicing-00
> looks at multicasting in a sliced context
>
> and
>
> https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01
> looks at slicing in a context of traffic engineering.
>
> Our thoughts are that network slicing spans a number of deployment
> scenarios, and has a number of diverse applications, ranging from
> fragile applications, through to providing enhanced security and 
> availability.
>
> Elements of the problem and the resultant solution have a close affinity
> to DETNET. There is clearly an affinity with VPN technologies, although
> none of the existing VPNs provide the degree of isolation that we think
> is required.
>
> We note that there seems to be no natural home for all of the aspects
> of this problem.
>
> It therefore seems that if would be a good idea for those interested
> in this problem to get together at some point during IETF to swap notes
> and share our views on the problem space and how to move forward
> with addressing it.
>
> Is there any interest in meeting up to discuss this in Seoul?
>
> Best regards
>
> Stewart/Mach/Jie
>
>
>
>
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet
>


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From: "Patrick Wetterwald (pwetterw)" <pwetterw@cisco.com>
To: nfinn <nfinn@alumni.caltech.edu>
Thread-Topic: [Detnet] DetNet Use Case Statements - How to express app time accuracy and reliability needs?
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Date: Thu, 3 Nov 2016 16:00:45 +0000
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References: <8620772c4ff1410ca6281384696a791b@DLB-XCHPW03.dolby.net> <89124517-CB41-4AAD-A6D9-96DBB57324E3@alumni.caltech.edu> <bc8006a4-fb11-121a-f52b-9d10d34ab014@nokia.com> <2c9cfd1f09b84ad4808871c9bcaf540b@XCH-RCD-001.cisco.com> <6211952161fe433a93219e8fe14f88bb@DLB-XCHPW03.dolby.net> <0CDAEFE4-1125-4C93-B9AB-F090596EE66B@alumni.caltech.edu> <7B1048C5-59A2-4D77-85B2-C227C501CDE5@broadcom.com> <A8BCFBA6-D14A-4369-824F-2F7161BE7A6E@cisco.com> <1F959F1F-6A43-407B-A2FD-A67B62765DA4@alumni.caltech.edu>
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Subject: Re: [Detnet] DetNet Use Case Statements - How to express app time accuracy and reliability needs?
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Cc: Jouni Korhonen <jouni.korhonen@broadcom.com>, "Grossman, Ethan A." <eagros@dolby.com>, Pascal Thubert <pthubert@cisco.com>, "detnet@ietf.org" <detnet@ietf.org>, Olivier Marce <Olivier.Marce@nokia.com>
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app time accuracy and reliability needs?
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Agreed!

=E2=80=94 Norm

> On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) =
<pwetterw@cisco.com> wrote:
>=20
> Hi Norm,
>=20
> I agree that Detnet should not spend too much time on time =
synchronization and time accuracy. I just wanted to express that if we =
want / need to report time accuracy, the application is not the only one =
interested in such information. In case of a PCE based Detnet, the PCE =
is one of the recipient of this information.
>=20
> Some applications may have their own time reference (based on GPS for =
instance).  What the application expects from a Detnet network is =
guarantee of delivery in a maximum latency with a bounded jitter and it =
differs to the PCE to handle all that is needed to ensure it.
>=20
> Does it make sense?
>=20
> Thanks,
>=20
> Patrick
>=20
> On 02/11/2016, 17:58, "nfinn" <nfinn@alumni.caltech.edu> wrote:
>=20
>    Patrick,
>=20
>    If you want to work on this approach, I don=E2=80=99t want to stop =
you.  But, it looks to me that it increases the number of options (and =
thus, everyone=E2=80=99s work load) with no benefit gained.
>=20
>    If the application has time requirements, I assume that it is able =
to synchronize its clock using one or more specific protocols, and =
therefore knows how to interpret each of those protocols=E2=80=99 =
accuracy information.  Problem solved.  Teaching the application to ask =
the PCE 1) requires that a PCE b e present, and 2) requires the =
application to implement a query/response of some kind to express its =
requirements and understand the answer.  Keep in mind that the answer is =
not always =E2=80=9Cyes/no=E2=80=9D.  Perhaps the application can =
operate in different modes, depending on clock accuracy.
>=20
>    Of course, if you or any expert in the time protocols tell us that =
only a centralized controller can make the determination for a =
significant class of use cases, I=E2=80=99m ready to change my mind.
>=20
>    =E2=80=94 Norm
>=20
>> On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) =
<pwetterw@cisco.com> wrote:
>>=20
>> I=E2=80=99m just wondering if this has to be reported to the =
application or to the PCE in case of central computing?
>>=20
>> Application asks for the accuracy then the PCE answers if this is =
possible or not.
>>=20
>> We may have both cases.
>>=20
>> Thanks,
>>=20
>> Patrick
>>=20
>> On 02/11/2016, 16:43, "detnet on behalf of Jouni Korhonen" =
<detnet-bounces@ietf.org on behalf of jouni.korhonen@broadcom.com> =
wrote:
>>=20
>>   looks good to me.
>>=20
>>   - jouni
>>=20
>>> On Oct 31, 2016, at 11:59 PM, nfinn <nfinn@alumni.caltech.edu> =
wrote:
>>>=20
>>> I think that=E2=80=99s a very good summary of my preferred approach. =
 Is it satisfactory for you?
>>>=20
>>> =E2=80=94 Norm
>>>=20
>>>> On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. <eagros@dolby.com> =
wrote:
>>>>=20
>>>> Hi Pascal, Olivier, Norm, WG,
>>>> So the consensus is, to paraphrase Norm:=20
>>>>=20
>>>> 1) Make sure that the time protocols are able to report, along with =
the time, the accuracy provided. =20
>>>> 2) The application will decide whether that is sufficient. =20
>>>> 3) The accuracy reported will likely consist of several parameters =
(frequency accuracy, absolute accuracy, etc.). =20
>>>> 4) Different time protocols may have different parameters for =
accuracy. =20
>>>> 5) An application might care about one or more of those parameters. =
=20
>>>> 6) An application might then operate in one of various modes, =
depending on the accuracy provided. =20
>>>>=20
>>>> If anyone has any other understanding or input, please reply.
>>>> Thanks,
>>>> Ethan.
>>>>=20
>>>> -----Original Message-----
>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Pascal =
Thubert (pthubert)
>>>> Sent: Tuesday, October 11, 2016 4:29 AM
>>>> To: Olivier Marce; detnet@ietf.org
>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?
>>>>=20
>>>> This is my understanding too, Olivier.=20
>>>>=20
>>>> Also, time-related work is done elsewhere, whether one thinks of =
IETF or outside the IETF. We do not want to be taken in the middle of =
that storm.
>>>> Best can do is probably state requirements, but for all I know we =
are using time as an information provided by external means, as opposed =
to managing it.
>>>>=20
>>>> Cheers,
>>>>=20
>>>> Pascal
>>>>=20
>>>> -----Original Message-----
>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Olivier =
Marce
>>>> Sent: jeudi 6 octobre 2016 12:05
>>>> To: detnet@ietf.org
>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?
>>>>=20
>>>> Hi,
>>>> I'm in favor of Norm' position: DetNet should concentrate on  =
reliable, on-time delivery of packets. Time accuracy is required for =
DetNet but out of scope, as many solutions exist and is not only a =
networking topic.
>>>> At most, DetNet could provide some reference examples on how =
providing required time accuracy.
>>>>=20
>>>>=20
>>>> Regards
>>>>=20
>>>> Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :
>>>>> Interesting question.
>>>>>=20
>>>>> It seems more useful to me to make sure that the time protocols =
are=20
>>>>> able to report, along with the time, the accuracy provided.  The=20=

>>>>> application can then decide whether that is sufficient.  The =
accuracy=20
>>>>> reported will likely consist of several parameters (frequency=20
>>>>> accuracy, absolute accuracy, etc.).  Different time protocols may =
have=20
>>>>> different parameters for accuracy.  The application might worried=20=

>>>>> about one or the other of those parameters.  It might operate in=20=

>>>>> different modes, depending on the accuracy provided.  I don't see =
the=20
>>>>> value in moving the decision point anywhere else.
>>>>>=20
>>>>> With DetNet, one can imagine a bandwidth reservation crossing a=20
>>>>> boundary between two different master clock domains.  My =
inclination=20
>>>>> would be to disallow that, at least for now.  Given an application=20=

>>>>> that runs for long enough, any frequency difference between source =
and=20
>>>>> sink will eventually cause starvation or overflow.
>>>>>=20
>>>>> All that said, let's suppose that you have a solid use case that =
is=20
>>>>> expected to *try* to run across clock domain boundaries, and we =
want=20
>>>>> to prevent that when it won't work.  This could be solved by an=20
>>>>> application-level protocol that exchanges clock domain =
information.
>>>>> This could be solved by configuring the network controller to=20
>>>>> disallow domain crossings.  This could be handled by parameters in =
the=20
>>>>> reservation protocol, as you suggest, so that the controller can =
allow=20
>>>>> some reservations but not others.  I'll leave it to timing experts =
to=20
>>>>> pick some number of appropriate parameters.
>>>>>=20
>>>>> One last consideration - Are you sure that all applications that =
have=20
>>>>> these timing requirements also require bandwidth reservations?  =
I'm=20
>>>>> not sure of that.  And, if not, a protocol separate from the =
bandwidth=20
>>>>> reservation might be indicated.
>>>>>=20
>>>>> - Norm
>>>>>=20
>>>>>> On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A. <eagros@dolby.com=20=

>>>>>> <mailto:eagros@dolby.com>> wrote:
>>>>>>=20
>>>>>> Hi Folks,
>>>>>>=20
>>>>>> As of our IETF 96 meeting there were still a couple of Use Case=20=

>>>>>> Statements that I would like clarity on. Here's the first, =
remaining=20
>>>>>> to follow in separate emails.
>>>>>>=20
>>>>>> Question:
>>>>>> How will an application express its time accuracy and reliability=20=

>>>>>> needs? Is that within scope of DetNet?
>>>>>>=20
>>>>>> Discussion:
>>>>>> In AVB/TSN when an application (talker) attempts to make a stream=20=

>>>>>> reservation it must state how much bandwidth that stream =
reservation=20
>>>>>> requires. Presumably in a LAN this is sufficient since a LAN=20
>>>>>> presumably has consistent time accuracy and reliability metrics.
>>>>>>=20
>>>>>> For DetNet, in which we support interconnected DetNet networks =
and=20
>>>>>> have widely varying requirements for timing accuracy and =
reliability=20
>>>>>> depending on the use case, it appears to me that we need to allow =
an=20
>>>>>> application to provide this kind of information to the network, =
and a=20
>>>>>> way for the network to either agree or decline to provide the=20
>>>>>> requested service (analogous to AVB/TSN accepting or declining a=20=

>>>>>> stream reservation based on the bandwidth requested).
>>>>>>=20
>>>>>> We have had some discussion about this (see below) but nothing =
near=20
>>>>>> consensus. Other thoughts from anyone?
>>>>>> Ethan.
>>>>>>=20
>>>>>> --------------------------------
>>>>>> Discussion, oldest item first:
>>>>>>=20
>>>>>> Ethan Grossman wrote:
>>>>>> Timekeeping - the only explicit DetNet Ask for this is in the use=20=

>>>>>> cases is in M2M as "Precise time synchronization accuracy (1us)" =
and=20
>>>>>> I think the intent (as in other use cases) is that the DetNet Ask =
is=20
>>>>>> for a way to specify the required accuracy, not how to achieve =
that accuracy.
>>>>>>=20
>>>>>> Norm Finn wrote:
>>>>>> Timekeeping is an essential part of many, probably most, of the=20=

>>>>>> applications that also find DetNet useful.  That having been =
said, so=20
>>>>>> is protection against EMI and electrical power saving. Let's=20
>>>>>> concentrate DetNet on reliable, on-time delivery of packets.  I'm =
not=20
>>>>>> even sure that "a way to specify the required accuracy" need be =
in scope.
>>>>>>=20
>>>>>> Rodney Cummings wrote:
>>>>>> I rarely disagree with Norm, but on this point I'll have to =
quibble a bit.
>>>>>> I agree that we don't need DetNet to specify how time sync is=20
>>>>>> accomplished. There are plenty of IEEE 1588 techniques (and =
similar)=20
>>>>>> for that purpose.
>>>>>> I also agree that we should concentrate on reliable, on-time =
delivery=20
>>>>>> of packets (i.e. worst-case latency).
>>>>>> If I don't know how accurate my time sync is, then how do I know =
when=20
>>>>>> a packet is delivered on time? If I don't know the reliability of =
my=20
>>>>>> time sync, how can I reliably measure that packet delivery?
>>>>>> Almost all (if not 100%) of DetNet use cases require time sync at =
the=20
>>>>>> end systems to some degree of accuracy. I agree that we don't =
need to=20
>>>>>> address the implementation of that time sync, but the application=20=

>>>>>> requirements are needed for time sync (including reliability) =
just as=20
>>>>>> much as for packet delivery.
>>>>>> --------------------------------
>>>>>>=20
>>>>>> _______________________________________________
>>>>>> detnet mailing list
>>>>>> detnet@ietf.org <mailto:detnet@ietf.org>=20
>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>=20
>>>>>=20
>>>>>=20
>>>>> _______________________________________________
>>>>> detnet mailing list
>>>>> detnet@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>=20
>>>>=20
>>>> --
>>>> Olivier Marc=C3=A9
>>>> Nokia Bell Labs France
>>>> "we need to guard against increased levels of reporting and other =
requirements that distract you from doing what you really need to be =
doing." Rajeev Suri, Nokia CEO, April 2016
>>>>=20
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>=20
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>=20
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>=20
>>> _______________________________________________
>>> detnet mailing list
>>> detnet@ietf.org
>>> https://www.ietf.org/mailman/listinfo/detnet
>>=20
>>   --
>>   Jouni Korhonen, Broadcom Ltd.
>>   M: +1-408-391-7160
>>=20
>>   _______________________________________________
>>   detnet mailing list
>>   detnet@ietf.org
>>   https://www.ietf.org/mailman/listinfo/detnet
>>=20
>>=20
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>=20
>=20
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet


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Cc: Alex Galis <a.galis@ucl.ac.uk>
Subject: Re: [Detnet] Network Slicing - a suggestion that we meet to discuss in Seoul
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 Hi All=20

The followings are some additional clarifications and issues related to =
Slice Networking.

Slice Networking has evolved from a simple network overlay concept used =
in the last 10 years in distributed and federated testbed research [GENI =
- http://groups.geni.net/geni/wiki/GENIConcepts] and active networks =
research to an end-to-end concept covering the radio and non-radio =
networks inclusive of access, core and edge / enterprise networks.

Key Characteristics:

- It enables the concurrent deployment of multiple logical, =
self-contained and independent shared or partitioned networks on a =
common infrastructure platform.

- It enables enabling dynamic multi-service support, multi-tenancy and =
the integration means for vertical market players.

- Slice Networking is abstracting different physical infrastructures =
into a logical network that contains shared resources, or dedicated core =
network equipment, and virtual network functions obtained by breaking =
down single physical equipment into multiple instances, which are =
isolated from each other. In addition virtualization of network =
functions allow to decouple network node functions from hardware =
appliances in order to create distinct building blocks that can be =
flexibly chained to create new communication services.

- The separation of different functions by abstractions simplifies the =
provisioning of services, manageability of networks and the integration =
and operational challenges especially for supporting communication =
services.

- It facilitates the use of the principles of software-defined networks =
and network function virtualization in order to fulfill the business =
requirements.

- Network operators / ISP can exploit network slicing for reducing =
significantly operations expenditures, allowing also programmability and =
innovation, necessary to enrich the offered services from simple =
communications services to a wider range of business services.

-  It enables Network Operators to offer tailored services and means for =
network programmability to OTT providers and other market players =
without changing the physical infrastructure.

=20

As such Slice Networking would considerably transform the networking =
perspective and enhance Internet architecture by abstracting, isolating, =
orchestrating and separating logical network behaviors from the =
underlying physical network resources.=20

An initial unified Slice Networking definition that take advantage of =
the above impactful characteristics is drafted in (*) =
https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-slice-network=
ing/.

Slice networking is also fully adopted in the context  of 5G research, =
development and standardisation [see (*)].

=20

It looks like that now is the best timing that this (revised) networking =
concept be fully evaluated and elaborated in the IETF.


I would be happy to contribute with your support to the creation of a =
BoF next year at IETF98.  =20
Such a BoF would cover the impact of slice networking in the data plane, =
control plane, management plane, topology, routing, traffic engineering, =
data models, operations, multi-domain, security, life-cycle management =
of slices (creation, composition, deletion, dimensioning), =
orchestration, terminology, etc.

I am  happy also to participate in a common meeting at IETF97.

I hope that the above would be of help to you.



See some of you in Seoul

=20
Best Regards

Prof. Alex Galis
University College London (UCL)
=20

=20

=20

=20




> On 3 Nov 2016, at 07:37, Do Truong Xuan <thespring1989@gmail.com> =
wrote:
>=20
> Hi !
>=20
> +1
>=20
> In the next generation network, IETF protocols and functions could be =
changed and managed in a different way.
> Network slicing is not just normal virtual private network but with =
different requirements (high availability, latency ..) and various =
functions.=20
> It's worthy describing this topic in IETF too.
>=20
>=20
> Brs,=20
>=20
> On Wed, Nov 2, 2016 at 12:21 AM, Stewart Bryant =
<stewart.bryant@gmail.com <mailto:stewart.bryant@gmail.com>> wrote:
>=20
> (Resent with correct draft alias)
>=20
> Hi,
>=20
> We were trying to pull together a problem statement for network =
slicing
> in a 5G context to understand how well the current IETF protocols =
address this problem, what their short comings might be, and what IETF =
work is necessary to have a deployable protocol suite to address this =
need.
>=20
> We have set down our first thoughts in
> =
https://tools.ietf.org/html/draft-dong-network-slicing-problem-statement-0=
0 =
<https://tools.ietf.org/html/draft-dong-network-slicing-problem-statement-=
00>
>=20
> We find that there are a number of groups doing similar work =
throughout the IETF.
>=20
> The following comprehensive draft was directed at the ANIMA WG
> =
https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-slice-network=
ing/ =
<https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-slice-networ=
king/>
>=20
> https://tools.ietf.org/html/draft-vonhugo-5gangip-ip-issues-00 =
<https://tools.ietf.org/html/draft-vonhugo-5gangip-ip-issues-00>
> is a detailed discussion the position of network slicing in a contest =
of next generation networks
>=20
> =
https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slicing-00 =
<https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slicing-00>=

> looks at multicasting in a sliced context
>=20
> and
>=20
> https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01 =
<https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01>
> looks at slicing in a context of traffic engineering.
>=20
> Our thoughts are that network slicing spans a number of deployment
> scenarios, and has a number of diverse applications, ranging from
> fragile applications, through to providing enhanced security and =
availability.
>=20
> Elements of the problem and the resultant solution have a close =
affinity
> to DETNET. There is clearly an affinity with VPN technologies, =
although
> none of the existing VPNs provide the degree of isolation that we =
think
> is required.
>=20
> We note that there seems to be no natural home for all of the aspects
> of this problem.
>=20
> It therefore seems that if would be a good idea for those interested
> in this problem to get together at some point during IETF to swap =
notes
> and share our views on the problem space and how to move forward
> with addressing it.
>=20
> Is there any interest in meeting up to discuss this in Seoul?
>=20
> Best regards
>=20
> Stewart/Mach/Jie
>=20
>=20
>=20
>=20
>=20
>=20
>=20
> --=20
> Truong-Xuan, Do <>
> PHD Candidate
>=20
> DCN Lab, Soongsil University
>=20
> (+82) 10 4473 6869
>=20
> xuan@dcn.ssu.ac.kr <mailto:xuan@dcn.ssu.ac.kr>

--Apple-Mail=_CD925EA4-2DBE-4072-BA53-F59533E4D58B
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><div class=3D""><p class=3D"MsoNormal"><span lang=3D"EN-US" =
class=3D"">&nbsp;</span>Hi All&nbsp;</p><p class=3D"MsoNormal"><span =
lang=3D"EN-US" class=3D"">The followings are some additional
clarifications and issues related to Slice Networking.<o:p =
class=3D""></o:p></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US" =
class=3D"">Slice Networking has evolved from a simple
network overlay concept used in the last 10 years in distributed and =
federated
testbed research [GENI - <a =
href=3D"http://groups.geni.net/geni/wiki/GENIConcepts" =
class=3D"">http://groups.geni.net/geni/wiki/GENIConcepts</a>] and
active networks research to an end-to-end concept covering the radio and
non-radio networks inclusive of access, core and edge / enterprise =
networks.<o:p class=3D""></o:p></span></p><p class=3D"MsoNormal"><span =
lang=3D"EN-US" class=3D"">Key Characteristics:<o:p =
class=3D""></o:p></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US" =
class=3D"">- It enables the concurrent deployment of
multiple logical, self-contained and independent shared or partitioned =
networks
on a common infrastructure platform.<o:p class=3D""></o:p></span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">- It enables =
enabling dynamic multi-service
support, multi-tenancy and the integration means for vertical market =
players.<o:p class=3D""></o:p></span></p><p class=3D"MsoNormal"><span =
lang=3D"EN-US" class=3D"">- Slice Networking is abstracting different
physical infrastructures into a logical network that contains shared =
resources,
or dedicated core network equipment, and virtual network functions =
obtained by
breaking down single physical equipment into multiple instances, which =
are
isolated from each other. In addition virtualization of network =
functions allow
to decouple network node functions from hardware appliances in order to =
create
distinct building blocks that can be flexibly chained to create new
communication services.<o:p class=3D""></o:p></span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">- The separation of =
different functions by
abstractions simplifies the provisioning of services, manageability of =
networks
and the integration and operational challenges especially for supporting
communication services.<o:p class=3D""></o:p></span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">- It facilitates the =
use of the principles
of software-defined networks and network function virtualization in =
order to
fulfill the business requirements.<o:p class=3D""></o:p></span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">- Network operators =
/ ISP can exploit
network slicing for reducing significantly operations expenditures, =
allowing
also programmability and innovation, necessary to enrich the offered =
services
from simple communications services to a wider range of business =
services.<o:p class=3D""></o:p></span></p><p class=3D"MsoNormal"><span =
lang=3D"EN-US" class=3D"">- &nbsp;It
enables Network Operators to offer tailored services and means for =
network
programmability to OTT providers and other market players without =
changing the
physical infrastructure.<o:p class=3D""></o:p></span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">&nbsp;</span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">As such Slice =
Networking would considerably
transform the networking perspective and enhance Internet architecture =
by
abstracting, isolating, orchestrating and separating logical network =
behaviors
from the underlying physical network resources.</span>&nbsp;</p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">An initial unified =
Slice Networking
definition that take advantage of the above impactful characteristics is
drafted in (*) <a =
href=3D"https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-slice=
-networking/" =
class=3D"">https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-sl=
ice-networking/</a>.<o:p class=3D""></o:p></span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">Slice networking is =
also fully adopted in
the context &nbsp;of 5G research, development and standardisation [see =
(*)].<o:p class=3D""></o:p></span></p><p class=3D"MsoNormal"><span =
lang=3D"EN-US" class=3D"">&nbsp;</span></p><p class=3D"MsoNormal"><span =
lang=3D"EN-US" class=3D"">It looks like that now is the best timing that =
this (revised) networking concept be fully evaluated and elaborated in
the IETF.<o:p class=3D""></o:p></span></p><p class=3D"MsoNormal" =
style=3D"margin-bottom:3.0pt"><span lang=3D"EN-US" class=3D""><br =
class=3D""></span></p><p class=3D"MsoNormal" =
style=3D"margin-bottom:3.0pt"><span lang=3D"EN-US" class=3D"">I would be
happy to contribute with your support to the creation of a BoF next year =
at
IETF98. &nbsp;&nbsp;<o:p class=3D""></o:p></span></p>






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class=3D"">Such a BoF would cover the impact of slice
networking in the data plane, control plane, management plane, topology, =
routing, traffic engineering, data
models, operations, multi-domain, security, life-cycle management of =
slices (creation,
composition, deletion, dimensioning), orchestration, terminology, =
etc.<o:p class=3D""></o:p></span></p>

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<!--StartFragment--><p class=3D"MsoNormal"><span lang=3D"EN-US" =
class=3D"">I am &nbsp;happy&nbsp;</span>also to participate in a
common meeting at IETF97.</p><p class=3D"MsoNormal"><span lang=3D"EN-US" =
class=3D"">I hope that the above would be of help to you.</span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D""><br =
class=3D""></span></p><p class=3D"MsoNormal"><span lang=3D"EN-US" =
class=3D"">See some of you in Seoul<o:p class=3D""></o:p></span></p>

<!--EndFragment--><p class=3D"MsoNormal" =
style=3D"margin-bottom:3.0pt"><span lang=3D"EN-US" =
class=3D"">&nbsp;</span></p><p class=3D"MsoNormal" =
style=3D"margin-bottom:3.0pt"><span lang=3D"EN-US" class=3D"">Best =
Regards</span></p><p class=3D"MsoNormal" =
style=3D"margin-bottom:3.0pt"><span lang=3D"EN-US" class=3D""><br =
class=3D""></span></p><p class=3D"MsoNormal" =
style=3D"margin-bottom:3.0pt"><span lang=3D"EN-US" class=3D"">Prof. Alex
Galis<o:p class=3D""></o:p></span></p><p class=3D"MsoNormal" =
style=3D"margin-bottom:3.0pt"><span lang=3D"EN-US" class=3D"">University
College London (UCL)<o:p class=3D""></o:p></span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">&nbsp;</span></p><p =
class=3D"MsoNormal"><span lang=3D"EN-US" class=3D"">&nbsp;</span></p>

<!--EndFragment--><p class=3D"MsoNormal"><span lang=3D"EN-US" =
class=3D"">&nbsp;</span></p><p class=3D"MsoNormal"><span lang=3D"EN-US" =
class=3D"">&nbsp;</span></p>

<!--EndFragment--></div><div class=3D""><br class=3D""></div><div =
class=3D""><br class=3D""></div><div class=3D""><br =
class=3D""><div><blockquote type=3D"cite" class=3D""><div class=3D"">On =
3 Nov 2016, at 07:37, Do Truong Xuan &lt;<a =
href=3D"mailto:thespring1989@gmail.com" =
class=3D"">thespring1989@gmail.com</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><meta =
http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8" =
class=3D""><div dir=3D"ltr" class=3D"">Hi !<div class=3D""><br =
class=3D""></div><div class=3D"">+1</div><div class=3D""><br =
class=3D""></div><div class=3D"">In the next generation network, IETF =
protocols and functions could be changed and managed in a different =
way.</div><div class=3D"">Network slicing is not just normal virtual =
private network but with different requirements (high availability, =
latency ..) and various functions.&nbsp;</div><div class=3D"">It's =
worthy describing this topic in IETF too.</div><div class=3D""><br =
class=3D""></div><div class=3D""><br class=3D""></div><div =
class=3D"">Brs,&nbsp;</div></div><div class=3D"gmail_extra"><br =
class=3D""><div class=3D"gmail_quote">On Wed, Nov 2, 2016 at 12:21 AM, =
Stewart Bryant <span dir=3D"ltr" class=3D"">&lt;<a =
href=3D"mailto:stewart.bryant@gmail.com" target=3D"_blank" =
class=3D"">stewart.bryant@gmail.com</a>&gt;</span> wrote:<br =
class=3D""><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 =
.8ex;border-left:1px #ccc solid;padding-left:1ex"><br class=3D"">
(Resent with correct draft alias)<br class=3D"">
<br class=3D"">
Hi,<br class=3D"">
<br class=3D"">
We were trying to pull together a problem statement for network =
slicing<br class=3D"">
in a 5G context to understand how well the current IETF protocols =
address this problem, what their short comings might be, and what IETF =
work is necessary to have a deployable protocol suite to address this =
need.<br class=3D"">
<br class=3D"">
We have set down our first thoughts in<br class=3D"">
<a =
href=3D"https://tools.ietf.org/html/draft-dong-network-slicing-problem-sta=
tement-00" rel=3D"noreferrer" target=3D"_blank" =
class=3D"">https://tools.ietf.org/html/dr<wbr =
class=3D"">aft-dong-network-slicing-probl<wbr =
class=3D"">em-statement-00</a><br class=3D"">
<br class=3D"">
We find that there are a number of groups doing similar work throughout =
the IETF.<br class=3D"">
<br class=3D"">
The following comprehensive draft was directed at the ANIMA WG<br =
class=3D"">
<a =
href=3D"https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-slice=
-networking/" rel=3D"noreferrer" target=3D"_blank" =
class=3D"">https://datatracker.ietf.org/d<wbr =
class=3D"">oc/draft-galis-anima-autonomic<wbr =
class=3D"">-slice-networking/</a><br class=3D"">
<br class=3D"">
<a href=3D"https://tools.ietf.org/html/draft-vonhugo-5gangip-ip-issues-00"=
 rel=3D"noreferrer" target=3D"_blank" =
class=3D"">https://tools.ietf.org/html/dr<wbr =
class=3D"">aft-vonhugo-5gangip-ip-issues-<wbr class=3D"">00</a><br =
class=3D"">
is a detailed discussion the position of network slicing in a contest of =
next generation networks<br class=3D"">
<br class=3D"">
<a =
href=3D"https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slic=
ing-00" rel=3D"noreferrer" target=3D"_blank" =
class=3D"">https://tools.ietf.org/html/dr<wbr =
class=3D"">aft-xuan-dmm-multicast-mobilit<wbr =
class=3D"">y-slicing-00</a><br class=3D"">
looks at multicasting in a sliced context<br class=3D"">
<br class=3D"">
and<br class=3D"">
<br class=3D"">
<a href=3D"https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01" =
rel=3D"noreferrer" target=3D"_blank" =
class=3D"">https://tools.ietf.org/html/dr<wbr =
class=3D"">aft-ietf-teas-actn-framework-<wbr class=3D"">01</a><br =
class=3D"">
looks at slicing in a context of traffic engineering.<br class=3D"">
<br class=3D"">
Our thoughts are that network slicing spans a number of deployment<br =
class=3D"">
scenarios, and has a number of diverse applications, ranging from<br =
class=3D"">
fragile applications, through to providing enhanced security and =
availability.<br class=3D"">
<br class=3D"">
Elements of the problem and the resultant solution have a close =
affinity<br class=3D"">
to DETNET. There is clearly an affinity with VPN technologies, =
although<br class=3D"">
none of the existing VPNs provide the degree of isolation that we =
think<br class=3D"">
is required.<br class=3D"">
<br class=3D"">
We note that there seems to be no natural home for all of the aspects<br =
class=3D"">
of this problem.<br class=3D"">
<br class=3D"">
It therefore seems that if would be a good idea for those interested<br =
class=3D"">
in this problem to get together at some point during IETF to swap =
notes<br class=3D"">
and share our views on the problem space and how to move forward<br =
class=3D"">
with addressing it.<br class=3D"">
<br class=3D"">
Is there any interest in meeting up to discuss this in Seoul?<br =
class=3D"">
<br class=3D"">
Best regards<br class=3D"">
<br class=3D"">
Stewart/Mach/Jie<br class=3D"">
<br class=3D"">
<br class=3D"">
<br class=3D"">
<br class=3D"">
</blockquote></div><br class=3D""><br clear=3D"all" class=3D""><div =
class=3D""><br class=3D""></div>-- <br class=3D""><div =
class=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div =
dir=3D"ltr" class=3D""><p class=3D""><a =
name=3D"UNIQUE_ID_SafeHtmlFilter__MailAutoSig" class=3D""><b =
class=3D"">Truong-Xuan, Do</b></a></p><p class=3D"">PHD Candidate </p><p =
class=3D"">DCN Lab, Soongsil University</p><p class=3D"">(+82) 10 4473 =
6869</p><p class=3D""><a href=3D"mailto:xuan@dcn.ssu.ac.kr" =
target=3D"_blank" class=3D"">xuan@dcn.ssu.ac.kr</a></p></div></div>
</div>
</div></blockquote></div><br class=3D""></div></body></html>=

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To: Alex Galis <a.galis@ucl.ac.uk>, 5gangip@ietf.org, detnet@ietf.org, nfvrg@irtf.org, draft-galis-anima-autonomic-slice-networking@ietf.org, draft-vonhugo-5gangip-ip-issues@ietf.org, draft-xuan-dmm-multicast-mobility-slicing@ietf.org, draft-ietf-teas-actn-framework@ietf.org, "Dongjie (Jimmy)" <jie.dong@huawei.com>, Mach Chen <mach.chen@huawei.com>, Stewart Bryant <stewart.bryant@gmail.com>, Do Truong Xuan <thespring1989@gmail.com>, "Pascal Thubert (pthubert)" <pthubert@cisco.com>, Jeff Tantsura <jefftant.ietf@gmail.com>, Ca By <cb.list6@gmail.com>, nfinn <nfinn@alumni.caltech.edu>
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Subject: Re: [Detnet] Network Slicing - a suggestion that we meet to discuss in Seoul
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On 11/5/2016 5:57 AM, Alex Galis wrote:
> Slice Networking has evolved from a simple network overlay concept
> used in the last 10 years in distributed and federated testbed
> research [GENI - http://groups.geni.net/geni/wiki/GENIConcepts]

Slicing originated in PlanetLab. There, it is a distributed set of OS
resources that are grouped together.

GENI adds VLAN tagged links. That's it (OK, maybe more sophisticated OS
resource reservation). There's no concept of a network, no overlay, no
network architecture.

A slice thus isn't a network concept at all, and never has been. It is,
at best, a set of resources that a user can configure into a distributed
application. It exists in two testbeds and a lot of marketing material.

An overlay, by contrast, is a network abstraction that has been
developed since the late 1990s with formal definitions.

Joe


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From: Zongning <zongning@huawei.com>
To: Discussion of reliable and deterministic latency attributes <dlnex@ietf.org>, Linda Dunbar <linda.dunbar@huawei.com>, Lou Berger <lberger@labn.net>, Pat Thaler <pat.thaler@broadcom.com>, "ietf@bobbriscoe.net" <ietf@bobbriscoe.net>
Thread-Topic: [DLNEX] Various sources contributing to E2E latency/delay-- Discussion of reliable and deterministic latency attributes
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From: "Grossman, Ethan A." <eagros@dolby.com>
To: "detnet@ietf.org" <detnet@ietf.org>
Thread-Topic: [Detnet] DetNet Security Review
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Hi Folks,

One of our members who is a security specialist sent me a list of prelimina=
ry comments and recommendations on DetNet Security, which I adapted into a =
set of slides (text below). I will add these slides into my DetNet Use Case=
s Update preso at IETF 97, but I am sending them out in advance so you can =
think about them and make comments. My cut and paste of the PPT text below =
may not be very readable - if anyone would rather see the original PPT or a=
 PDF version please let me know and I can send it to you directly.

Thanks,

Ethan.

---------------------------------------------


=95DetNet Security Topics
=95Based on recommendations from Professor Andrew J Hacker
=95Cybersecurity Expert in Residence, Harrisburg University of Science and =
Technology and CEO, MistIQ Technologies, Inc.
=95Goals of this Presentation
=95Thus far DetNet strategy has been =93Don=92t break security=94
=95Next steps:
1.Now: enumerate DetNet technologies that have potential security implicati=
ons
2.Eventually: identify those DetNet technologies for which we must either
=95Create a security related protocol that doesn=92t already exist, or
=95Modify an existing protocol for use with DetNet
=95
=95Not all DetNet use cases require the same level of security, so define a=
 set of security functions that applications can choose from
=95Overall Security Strategy Recommendation
=95Consider DetNet security using =93CIA=94 principle
=95Confidentiality
=95Path choices, predictability/unpredictability, encryption, privacy/maski=
ng
=95Integrity
=95Ingress device and message authorization and access control, device code=
 validation, required code reviews, buffer/field/queue integrity validation=
s, parameter/config validations, vulnerability management
=95Availability
=95Availability versus attack surface, denial of service, manipulation of t=
ime sensitivity
=95This preso follows this organization, ordered by DetNet function
=95Documentation Recommendations
=95Consolidate security discussions into a =93DetNet Cybersecurity=94 doc
=95Ethan has done a first cut at this =96 should it be submitted as a DetNe=
t draft?
=95If so, then should security discussions in existing drafts be replaced w=
ith a reference to the new security draft?
=95Define set of =93DetNet-specific security components=94
=95Refer to specific existing standards where possible
=95Create spec for those we must create
=95Determine which use cases require which security components
=95
=95DetNet Functions with Security Implications (1/3)
=95Packet replication & elimination
=95Effect on existing security protocols?
=95HTTPS?
=95Ipsec tunneling?
=95Encrypted packets/payloads?
=95How does the predictability/unpredictability of the results of the algor=
ithms used (e.g. IEEE 802.1cb) affect overall security of the system?
=95Effect on attacker=92s ability to inject and validate malicious packets?
=95Effects of trade-off between increased availability and attack surface?
=95DetNet Functions with Security Implications (2/3)
=95Path choice(s) and information about path choice(s)
=95Effect of increased attack surface?
=95Can an attacker predetermine a path or flow?
=95Possibility/effect of attacker changing, influencing, adding a path or f=
low?
=95Logical segmentation between DetNet/non-DetNet paths and flows
=95Requirements?
=95Network slicing?
=95Query/response/process execution considerations/differences
=95Information Technology vs
=95Operational Technology
=95
=95DetNet Functions with Security Implications (3/3)
=95Packet fields which require encryption/obfuscation
=95Examples
=95Path routes
=95Timing fields
=95Duplicate packet flags
=95Packet content (e.g. control messages)
=95Device authorization and access to DetNet domain
=95At ingress, egress, along path
=95Part of DetNet or higher level application?
=95Message authorization
=95Part of DetNet or higher level application?
=95If vulnerabilities in DetNet affect message, waiting until message it pa=
ssed up to higher level application may affect higher level applications ab=
ility to properly and securely assess the message
=95Runtime Monitoring Recommendations
=95Runtime mechanisms to
=95Detect and disconnect misbehaving components and/or devices
=95Monitor OAM integrity and DetNet security framework integrity
=95Monitor performance - provide alerts and corrective action at appropriat=
e points
=95Validate sensitive/critical parameter configurations
=95Validate (and prevent manipulation of) time-sensitive algorithms/values
=95Use backup algorithms for this?
=95Log operations (which operations require logging?)
=95Validate active DetNet devices=92 executable code?
=95Embed portions of DetNet security intelligence directly into data
=95Packets can contain dynamic data in addition to content calculated by ne=
twork infrastructure
=95Refer to Author=92s research and IP on this topic, for example a cyberse=
curity framework that places functionality and intelligence directly within=
 data packets to provide dynamic and contextual correlation of information =
to improve control and precision over packet security, privacy and network =
flow
=95Considerations for DOS attacks - validation/priority mechanisms must acc=
ount for
=95Global device overruns making DetNet goals unobtainable
=95Attacker pre-provisioning DDOS conditions
=95Service lost due to malicious timing changes
=95DetNet Implementation/Development Process
=95Certification/validation of DetNet components
=95HW components
=95SW components
=95Devices
=95Reviews of DetNet SW, HW designs
=95Buffers
=95Important fields
=95Duplication/deduplication/path and packet management
=95OAM management algorithms
=95How much of this is in DetNet scope?
=95None?
=95Work with AVnu Alliance?
------------------------------------------------------------------------


________________________________
From: Maik Seewald (maseewal) <maseewal@cisco.com>
Sent: Tuesday, October 11, 2016 4:09 AM
To: nfinn; Grossman, Ethan A.
Cc: detnet@ietf.org
Subject: Re: [Detnet] DetNet Security Review

In parallel, IEEE 1588 has a sub working group defining security (in terms =
of profiles/prongs) for the 1588 protocol.
For time-sensitive networking, security for critical services (such as time=
) is essential, especially in WAN use cases=85
Regards, Maik

From: Norm Finn <nfinn@alumni.caltech.edu<mailto:nfinn@alumni.caltech.edu>>
Date: Dienstag, 11. Oktober 2016 08:05
To: "Grossman, Ethan A." <eagros@dolby.com<mailto:eagros@dolby.com>>
Cc: "detnet@ietf.org<mailto:detnet@ietf.org>" <detnet@ietf.org<mailto:detne=
t@ietf.org>>
Subject: Re: [Detnet] DetNet Security Review

You are a regular fountain of good questions lately, Ethan!

There are people in NTP/TICTOC looking at time security.

Not much else that I know about.

=97 Norm

On Oct 7, 2016, at 1:13 PM, Grossman, Ethan A. <eagros@dolby.com<mailto:eag=
ros@dolby.com>> wrote:

Hi Folks,
Security is of paramount importance for most if not all of the networks des=
cribed in the DetNet use cases. I gather that DetNet itself doesn=92t have =
a lot of explicit security aspects, however since security in such networks=
 needs to be considered from the start as opposed to later, do we have some=
one among us who is our =93security guru=94 who is keeping an eye on our de=
velopment to make sure we don=92t miss a trick anywhere? One way or another=
, I would like to be confident that we have this totally covered.
Thanks,
Ethan.

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<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-1=
252">
<style type=3D"text/css" style=3D"display:none"><!-- p { margin-top: 0px; m=
argin-bottom: 0px; }--></style>
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<body dir=3D"ltr" style=3D"font-size:12pt;color:#000000;background-color:#F=
FFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;">
<p>Hi Folks,<br>
</p>
<p>One of our members who is a security specialist sent me a list of prelim=
inary&nbsp;comments and recommendations on DetNet Security, which I adapted=
 into a set of&nbsp;slides (text below). I will&nbsp;add&nbsp;these slides =
into&nbsp;my DetNet&nbsp;Use Cases Update preso at IETF 97, but
 I am sending them out in advance so&nbsp;you can&nbsp;think about them&nbs=
p;and make&nbsp;comments. My&nbsp;cut and paste of the PPT text below may n=
ot be&nbsp;very readable - if anyone would rather see the original PPT or a=
 PDF version please let me know and I can send it to you&nbsp;directly.&nbs=
p;<br>
</p>
<p>Thanks,<br>
</p>
<p>Ethan.<br>
</p>
<p>---------------------------------------------<br>
</p>
<p><br>
</p>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">DetNet</span><span style=3D"font-size: 28pt; font-family: C=
alibri;"> Security Topics</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Based on recommendations from Professor Andrew J Hacker
</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Cybersecurity Expert in Residence, Harrisburg University of=
 Science and Technology and CEO,
</span><span style=3D"font-size: 28pt; font-family: Calibri;">MistIQ</span>=
<span style=3D"font-size: 28pt; font-family: Calibri;"> Technologies, Inc.<=
/span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Goals of this Presentation</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Thus far
</span><span style=3D"font-size: 28pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 28pt; font-family: Calibri;"> strategy has been =
=93Don=92t break security=94</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Next steps:
</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1in; text-indent: -0.5in; direction: ltr; unicode-bidi:=
 embed; word-break: normal;">
<span style=3D"font-size:24.0pt">1.</span><span style=3D"font-size: 24pt; f=
ont-family: Calibri;">Now: enumerate
</span><span style=3D"font-size: 24pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 24pt; font-family: Calibri;"> technologies that h=
ave potential security implications</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1in; text-indent: -0.5in; direction: ltr; unicode-bidi:=
 embed; word-break: normal;">
<span style=3D"font-size:24.0pt">2.</span><span style=3D"font-size: 24pt; f=
ont-family: Calibri;">Eventually: identify those
</span><span style=3D"font-size: 24pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 24pt; font-family: Calibri;"> technologies for wh=
ich we must either</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Create a security related protocol that doesn=92t already ex=
ist, or
</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Modify an existing protocol for use with
</span><span style=3D"font-size: 20pt; font-family: Calibri;">DetNet</span>=
</div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<!--[if ppt]--><span style=3D"font-size:20.0pt"><span style=3D"mso-special-=
format:bullet;font-family:Arial">=95</span></span><!--[endif]--></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Not all
</span><span style=3D"font-size: 28pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 28pt; font-family: Calibri;"> use cases require t=
he same level of security, so define a set of security functions that appli=
cations can choose from</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Overall Security Strategy Recommendation</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Consider
</span><span style=3D"font-size: 28pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 28pt; font-family: Calibri;"> security using =93C=
IA=94 principle</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Confidentiality</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Path choices, predictability/unpredictability, encryption, p=
rivacy/masking</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Integrity</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Ingress device and message authorization and access control,=
 device code validation, required code reviews,
 buffer/field/queue integrity validations, parameter/config validations, vu=
lnerability management</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Availability</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Availability versus attack surface, denial of service, manip=
ulation of time sensitivity</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">This
</span><span style=3D"font-size: 28pt; font-family: Calibri;">preso</span><=
span style=3D"font-size: 28pt; font-family: Calibri;"> follows this organiz=
ation, ordered by
</span><span style=3D"font-size: 28pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 28pt; font-family: Calibri;"> function</span></di=
v>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Documentation Recommendations</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Consolidate security discussions into a =93</span><span sty=
le=3D"font-size: 28pt; font-family: Calibri;">DetNet</span><span style=3D"f=
ont-size: 28pt; font-family: Calibri;">
 Cybersecurity=94 doc</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Ethan has done a first cut at this =96 should it be submitte=
d as a
</span><span style=3D"font-size: 24pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 24pt; font-family: Calibri;"> draft?</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">If so, then should security discussions in existing drafts b=
e replaced with a reference to the new security
 draft? </span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Define set of =93</span><span style=3D"font-size: 28pt; fon=
t-family: Calibri;">DetNet</span><span style=3D"font-size: 28pt; font-famil=
y: Calibri;">-specific
 security components=94</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Refer to specific existing standards where possible</span></=
div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Create spec for those we must create</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Determine which use cases require which security components=
</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<!--[if ppt]--><span style=3D"font-size:28.0pt"><span style=3D"mso-special-=
format:=0A=
bullet;font-family:Arial">=95</span></span><!--[endif]--></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:36.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 36pt; font-fa=
mily: Calibri;">DetNet</span><span style=3D"font-size: 36pt; font-family: C=
alibri;"> Functions with Security Implications
 (1/3)</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Packet replication &amp; elimination</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Effect on existing security protocols?</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">HTTPS?</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Ipsec</span><span style=3D"font-size: 20pt; font-family: Cal=
ibri;"> tunneling?</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Encrypted packets/payloads?
</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">How does the predictability/unpredictability of the results =
of the algorithms used (e.g. IEEE 802.1cb)
 affect overall security of the system?</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Effect on attacker=92s ability to inject and validate malici=
ous packets?</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Effects of trade-off between increased availability and atta=
ck surface?</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:36.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 36pt; font-fa=
mily: Calibri;">DetNet</span><span style=3D"font-size: 36pt; font-family: C=
alibri;"> Functions with Security Implications
 (2/3)</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Path choice(s) and information about path choice(s)</span><=
/div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Effect of increased attack surface?</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Can an attacker predetermine a path or flow?
</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Possibility/effect of attacker changing, influencing, adding=
 a path or flow?</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Logical segmentation between
</span><span style=3D"font-size: 28pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 28pt; font-family: Calibri;">/non-</span><span st=
yle=3D"font-size: 28pt; font-family: Calibri;">DetNet</span><span style=3D"=
font-size: 28pt; font-family: Calibri;">
 paths and flows</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Requirements?
</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Network slicing?</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Query/response/process execution considerations/differences=
</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Information Technology vs</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Operational Technology</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<!--[if ppt]--><span style=3D"font-size:28.0pt"><span style=3D"mso-special-=
format:=0A=
bullet;font-family:Arial">=95</span></span><!--[endif]--></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:36.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 36pt; font-fa=
mily: Calibri;">DetNet</span><span style=3D"font-size: 36pt; font-family: C=
alibri;"> Functions with Security Implications
 (3/3)</span></div>
<div class=3D"O0" style=3D"line-height: 90%; margin-top: 10pt; margin-botto=
m: 0pt; margin-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-=
bidi: embed; word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fam=
ily: Calibri;">Packet fields which require encryption/obfuscation</span></d=
iv>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Examples</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Path routes</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Timing fields</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Duplicate packet flags</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Packet content (e.g. control messages)</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Device authorization and access to
</span><span style=3D"font-size: 28pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 28pt; font-family: Calibri;"> domain</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">At ingress, egress, along path</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Part of
</span><span style=3D"font-size: 24pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 24pt; font-family: Calibri;"> or higher level app=
lication?</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Message authorization</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Part of
</span><span style=3D"font-size: 24pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 24pt; font-family: Calibri;"> or higher level app=
lication?</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">If vulnerabilities in
</span><span style=3D"font-size: 24pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 24pt; font-family: Calibri;"> affect message, wai=
ting until message it passed up to higher level application may affect high=
er level applications ability to properly
 and securely assess the message</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:36.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 36pt; font-fa=
mily: Calibri;">Runtime Monitoring Recommendations</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Runtime mechanisms to
</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Detect and disconnect misbehaving components and/or devices<=
/span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Monitor OAM integrity and
</span><span style=3D"font-size: 24pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 24pt; font-family: Calibri;"> security framework =
integrity</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Monitor performance - provide alerts and corrective action a=
t appropriate points</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Validate sensitive/critical parameter configurations</span><=
/div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Validate (and prevent manipulation of) time-sensitive algori=
thms/values</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Use backup algorithms for this?</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Log operations (which operations require logging?)
</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Validate active
</span><span style=3D"font-size: 24pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 24pt; font-family: Calibri;"> devices=92 executab=
le code?</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Embed portions of
</span><span style=3D"font-size: 28pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 28pt; font-family: Calibri;"> security intelligen=
ce directly into data</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Packets can contain dynamic data in addition to content calc=
ulated by network infrastructure</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Refer to Author=92s research and IP on this topic, for examp=
le a cybersecurity framework that places functionality
 and intelligence directly within data packets to provide dynamic and conte=
xtual correlation of information to improve control and precision over pack=
et security, privacy and network flow</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Considerations for DOS attacks - validation/priority mechan=
isms must account for</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Global device overruns making
</span><span style=3D"font-size: 20pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 20pt; font-family: Calibri;"> goals unobtainable<=
/span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Attacker pre-provisioning DDOS conditions</span></div>
<div class=3D"O2" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:20.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 20pt; font-fam=
ily: Calibri;">Service lost due to malicious timing changes</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:40.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 40pt; font-fa=
mily: Calibri;">DetNet</span><span style=3D"font-size: 40pt; font-family: C=
alibri;"> Implementation/Development Process</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Certification/validation of
</span><span style=3D"font-size: 28pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 28pt; font-family: Calibri;"> components</span></=
div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">HW components</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">SW components</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Devices</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">Reviews of
</span><span style=3D"font-size: 28pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 28pt; font-family: Calibri;"> SW, HW designs</spa=
n></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Buffers</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Important fields</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Duplication/deduplication/path and packet management</span><=
/div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">OAM management algorithms</span></div>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
<span style=3D"font-size:28.0pt"><span style=3D"mso-special-format:bullet;=
=0A=
font-family:Arial">=95</span></span><span style=3D"font-size: 28pt; font-fa=
mily: Calibri;">How much of this is in
</span><span style=3D"font-size: 28pt; font-family: Calibri;">DetNet</span>=
<span style=3D"font-size: 28pt; font-family: Calibri;"> scope?
</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">None?
</span></div>
<div class=3D"O1" style=3D"line-height: 90%; margin-top: 5pt; margin-bottom=
: 0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-b=
idi: embed; word-break: normal;">
<span style=3D"font-size:24.0pt"><span style=3D"mso-special-format:bullet;f=
ont-family:Arial">=95</span></span><span style=3D"font-size: 24pt; font-fam=
ily: Calibri;">Work with
</span><span style=3D"font-size: 24pt; font-family: Calibri;">AVnu Alliance=
</span><span style=3D"font-size: 24pt; font-family: Calibri;">?</span></div=
>
<div style=3D"line-height: 90%; margin-top: 10pt; margin-bottom: 0pt; margi=
n-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: embed; =
word-break: normal;">
------------------------------------------------------------------------<br=
>
</div>
<p><br>
</p>
<div style=3D"word-wrap:break-word; color:rgb(0,0,0); font-size:14px; font-=
family:Calibri,sans-serif">
<hr tabindex=3D"-1" style=3D"display:inline-block; width:98%">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" co=
lor=3D"#000000" style=3D"font-size:11pt"><b>From:</b> Maik Seewald (maseewa=
l) &lt;maseewal@cisco.com&gt;<br>
<b>Sent:</b> Tuesday, October 11, 2016 4:09 AM<br>
<b>To:</b> nfinn; Grossman, Ethan A.<br>
<b>Cc:</b> detnet@ietf.org<br>
<b>Subject:</b> Re: [Detnet] DetNet Security Review</font>
<div>&nbsp;</div>
</div>
<div>
<div>In parallel, IEEE 1588 has a sub working group defining security (in t=
erms of profiles/prongs) for the 1588 protocol.</div>
<div>For time-sensitive networking, security for critical services (such as=
 time) is essential, especially in WAN use cases=85</div>
<div>Regards, Maik&nbsp;</div>
<div><br>
</div>
<span id=3D"OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri; font-size:11pt; text-align:left; color:b=
lack; border-bottom:medium none; border-left:medium none; padding-bottom:0i=
n; padding-left:0in; padding-right:0in; border-top:#b5c4df 1pt solid; borde=
r-right:medium none; padding-top:3pt">
<span style=3D"font-weight:bold">From: </span>Norm Finn &lt;<a href=3D"mail=
to:nfinn@alumni.caltech.edu">nfinn@alumni.caltech.edu</a>&gt;<br>
<span style=3D"font-weight:bold">Date: </span>Dienstag, 11. Oktober 2016 08=
:05<br>
<span style=3D"font-weight:bold">To: </span>&quot;Grossman, Ethan A.&quot; =
&lt;<a href=3D"mailto:eagros@dolby.com">eagros@dolby.com</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>&quot;<a href=3D"mailto:detnet@=
ietf.org">detnet@ietf.org</a>&quot; &lt;<a href=3D"mailto:detnet@ietf.org">=
detnet@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>Re: [Detnet] DetNet Securi=
ty Review<br>
</div>
<div><br>
</div>
<div>
<div class=3D"" style=3D"word-wrap:break-word">You are a regular fountain o=
f good questions lately, Ethan!
<div class=3D""><br class=3D"">
</div>
<div class=3D"">There are people in NTP/TICTOC looking at time security.</d=
iv>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">Not much else that I know about.</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">=97 Norm</div>
<div class=3D""><br class=3D"">
<div class=3D"">
<div>
<blockquote type=3D"cite" class=3D"">
<div class=3D"">On Oct 7, 2016, at 1:13 PM, Grossman, Ethan A. &lt;<a href=
=3D"mailto:eagros@dolby.com" class=3D"">eagros@dolby.com</a>&gt; wrote:</di=
v>
<br class=3D"Apple-interchange-newline">
<div class=3D""><font face=3D"Calibri" size=3D"2" class=3D"" style=3D"font-=
style:normal; font-weight:normal; letter-spacing:normal; orphans:auto; text=
-align:start; text-indent:0px; text-transform:none; white-space:normal; wid=
ows:auto; word-spacing:0px"><span class=3D"" style=3D"font-size:11pt">
<div class=3D"">Hi Folks,</div>
<div class=3D"">Security is of paramount importance for most if not all of =
the networks described in the DetNet use cases. I gather that DetNet itself=
 doesn=92t have a lot of explicit security aspects, however since security =
in such networks needs to be considered
 from the start as opposed to later, do we have someone among us who is our=
 =93security guru=94 who is keeping an eye on our development to make sure =
we don=92t miss a trick anywhere? One way or another, I would like to be co=
nfident that we have this totally covered.</div>
<div class=3D"">Thanks,</div>
<div class=3D"">Ethan.</div>
<div class=3D"">&nbsp;</div>
</span></font><span class=3D"" style=3D"font-family:Helvetica; font-size:12=
px; font-style:normal; font-weight:normal; letter-spacing:normal; orphans:a=
uto; text-align:start; text-indent:0px; text-transform:none; white-space:no=
rmal; widows:auto; word-spacing:0px; float:none; display:inline!important">=
_______________________________________________</span><br class=3D"" style=
=3D"font-family:Helvetica; font-size:12px; font-style:normal; font-weight:n=
ormal; letter-spacing:normal; orphans:auto; text-align:start; text-indent:0=
px; text-transform:none; white-space:normal; widows:auto; word-spacing:0px"=
>
<span class=3D"" style=3D"font-family:Helvetica; font-size:12px; font-style=
:normal; font-weight:normal; letter-spacing:normal; orphans:auto; text-alig=
n:start; text-indent:0px; text-transform:none; white-space:normal; widows:a=
uto; word-spacing:0px; float:none; display:inline!important">detnet
 mailing list</span><br class=3D"" style=3D"font-family:Helvetica; font-siz=
e:12px; font-style:normal; font-weight:normal; letter-spacing:normal; orpha=
ns:auto; text-align:start; text-indent:0px; text-transform:none; white-spac=
e:normal; widows:auto; word-spacing:0px">
<a href=3D"mailto:detnet@ietf.org" class=3D"" style=3D"font-family:Helvetic=
a; font-size:12px; font-style:normal; font-weight:normal; letter-spacing:no=
rmal; orphans:auto; text-align:start; text-indent:0px; text-transform:none;=
 white-space:normal; widows:auto; word-spacing:0px">detnet@ietf.org</a><br =
class=3D"" style=3D"font-family:Helvetica; font-size:12px; font-style:norma=
l; font-weight:normal; letter-spacing:normal; orphans:auto; text-align:star=
t; text-indent:0px; text-transform:none; white-space:normal; widows:auto; w=
ord-spacing:0px">
<a href=3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.ietf.=
org_mailman_listinfo_detnet&amp;d=3DDQMFAw&amp;c=3DlI8Zb6TzM3d1tX4iEu7bpg&a=
mp;r=3DZcHC6wX_gDwPDcfMaFNZiQ&amp;m=3DW4_8szPlllWiEi0_jSw9Fn4cXKwLHz7G4dAb4=
O8CLhE&amp;s=3DoAgQMPFbBI9qmtnr4HqDkAJvJ9MxBgYBzmepAcnIf6g&amp;e=3D" class=
=3D"" style=3D"font-family:Helvetica; font-size:12px; font-style:normal; fo=
nt-weight:normal; letter-spacing:normal; orphans:auto; text-align:start; te=
xt-indent:0px; text-transform:none; white-space:normal; widows:auto; word-s=
pacing:0px">https://www.ietf.org/mailman/listinfo/detnet</a></div>
</blockquote>
</div>
<br class=3D"">
</div>
</div>
</div>
</div>
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There are some good points, here.  There are a few more points that, I =
think, would be useful additions to the discussion:

  =E2=80=A2 How much time required to set up and/or validate security =
relationships at power up, or to check them after power up?

  =E2=80=A2 What effect do various encryption/validation choices have on =
latency and latency variation?

  =E2=80=A2 Given that on-time delivery can be just as important to the =
proper functioning of some applications as correct data, and that =
encrypting data does not prevent attacks based on manipulating the =
delivery time, what are the advantages/disadvantages of end-to-end vs =
hop-by-hop trust relationships?

I=E2=80=99m sure there are more.

=E2=80=94 Norm

> On Nov 7, 2016, at 14:55, Grossman, Ethan A. <eagros@dolby.com> wrote:
>=20
> Hi Folks,
> One of our members who is a security specialist sent me a list of =
preliminary comments and recommendations on DetNet Security, which I =
adapted into a set of slides (text below). I will add these slides into =
my DetNet Use Cases Update preso at IETF 97, but I am sending them out =
in advance so you can think about them and make comments. My cut and =
paste of the PPT text below may not be very readable - if anyone would =
rather see the original PPT or a PDF version please let me know and I =
can send it to you directly.=20
> Thanks,
> Ethan.
> ---------------------------------------------
>=20
> =E2=80=A2DetNet Security Topics
> =E2=80=A2Based on recommendations from Professor Andrew J Hacker
> =E2=80=A2Cybersecurity Expert in Residence, Harrisburg University of =
Science and Technology and CEO, MistIQ Technologies, Inc.
> =E2=80=A2Goals of this Presentation
> =E2=80=A2Thus far DetNet strategy has been =E2=80=9CDon=E2=80=99t =
break security=E2=80=9D
> =E2=80=A2Next steps:
> 1.Now: enumerate DetNet technologies that have potential security =
implications
> 2.Eventually: identify those DetNet technologies for which we must =
either
> =E2=80=A2Create a security related protocol that doesn=E2=80=99t =
already exist, or
> =E2=80=A2Modify an existing protocol for use with DetNet
> =E2=80=A2
> =E2=80=A2Not all DetNet use cases require the same level of security, =
so define a set of security functions that applications can choose from
> =E2=80=A2Overall Security Strategy Recommendation
> =E2=80=A2Consider DetNet security using =E2=80=9CCIA=E2=80=9D =
principle
> =E2=80=A2Confidentiality
> =E2=80=A2Path choices, predictability/unpredictability, encryption, =
privacy/masking
> =E2=80=A2Integrity
> =E2=80=A2Ingress device and message authorization and access control, =
device code validation, required code reviews, buffer/field/queue =
integrity validations, parameter/config validations, vulnerability =
management
> =E2=80=A2Availability
> =E2=80=A2Availability versus attack surface, denial of service, =
manipulation of time sensitivity
> =E2=80=A2This preso follows this organization, ordered by =
DetNetfunction
> =E2=80=A2Documentation Recommendations
> =E2=80=A2Consolidate security discussions into a =E2=80=9CDetNet =
Cybersecurity=E2=80=9D doc
> =E2=80=A2Ethan has done a first cut at this =E2=80=93 should it be =
submitted as a DetNetdraft?
> =E2=80=A2If so, then should security discussions in existing drafts be =
replaced with a reference to the new security draft?=20
> =E2=80=A2Define set of =E2=80=9CDetNet-specific security components=E2=80=
=9D
> =E2=80=A2Refer to specific existing standards where possible
> =E2=80=A2Create spec for those we must create
> =E2=80=A2Determine which use cases require which security components
> =E2=80=A2
> =E2=80=A2DetNet Functions with Security Implications (1/3)
> =E2=80=A2Packet replication & elimination
> =E2=80=A2Effect on existing security protocols?
> =E2=80=A2HTTPS?
> =E2=80=A2Ipsec tunneling?
> =E2=80=A2Encrypted packets/payloads?
> =E2=80=A2How does the predictability/unpredictability of the results =
of the algorithms used (e.g. IEEE 802.1cb) affect overall security of =
the system?
> =E2=80=A2Effect on attacker=E2=80=99s ability to inject and validate =
malicious packets?
> =E2=80=A2Effects of trade-off between increased availability and =
attack surface?
> =E2=80=A2DetNet Functions with Security Implications (2/3)
> =E2=80=A2Path choice(s) and information about path choice(s)
> =E2=80=A2Effect of increased attack surface?
> =E2=80=A2Can an attacker predetermine a path or flow?
> =E2=80=A2Possibility/effect of attacker changing, influencing, adding =
a path or flow?
> =E2=80=A2Logical segmentation between DetNet/non-DetNet paths and =
flows
> =E2=80=A2Requirements?
> =E2=80=A2Network slicing?
> =E2=80=A2Query/response/process execution considerations/differences
> =E2=80=A2Information Technology vs
> =E2=80=A2Operational Technology
> =E2=80=A2
> =E2=80=A2DetNet Functions with Security Implications (3/3)
> =E2=80=A2Packet fields which require encryption/obfuscation
> =E2=80=A2Examples
> =E2=80=A2Path routes
> =E2=80=A2Timing fields
> =E2=80=A2Duplicate packet flags
> =E2=80=A2Packet content (e.g. control messages)
> =E2=80=A2Device authorization and access to DetNet domain
> =E2=80=A2At ingress, egress, along path
> =E2=80=A2Part of DetNet or higher level application?
> =E2=80=A2Message authorization
> =E2=80=A2Part of DetNet or higher level application?
> =E2=80=A2If vulnerabilities in DetNet affect message, waiting until =
message it passed up to higher level application may affect higher level =
applications ability to properly and securely assess the message
> =E2=80=A2Runtime Monitoring Recommendations
> =E2=80=A2Runtime mechanisms to
> =E2=80=A2Detect and disconnect misbehaving components and/or devices
> =E2=80=A2Monitor OAM integrity and DetNet security framework integrity
> =E2=80=A2Monitor performance - provide alerts and corrective action at =
appropriate points
> =E2=80=A2Validate sensitive/critical parameter configurations
> =E2=80=A2Validate (and prevent manipulation of) time-sensitive =
algorithms/values
> =E2=80=A2Use backup algorithms for this?
> =E2=80=A2Log operations (which operations require logging?)
> =E2=80=A2Validate active DetNet devices=E2=80=99 executable code?
> =E2=80=A2Embed portions of DetNet security intelligence directly into =
data
> =E2=80=A2Packets can contain dynamic data in addition to content =
calculated by network infrastructure
> =E2=80=A2Refer to Author=E2=80=99s research and IP on this topic, for =
example a cybersecurity framework that places functionality and =
intelligence directly within data packets to provide dynamic and =
contextual correlation of information to improve control and precision =
over packet security, privacy and network flow
> =E2=80=A2Considerations for DOS attacks - validation/priority =
mechanisms must account for
> =E2=80=A2Global device overruns making DetNet goals unobtainable
> =E2=80=A2Attacker pre-provisioning DDOS conditions
> =E2=80=A2Service lost due to malicious timing changes
> =E2=80=A2DetNet Implementation/Development Process
> =E2=80=A2Certification/validation of DetNet components
> =E2=80=A2HW components
> =E2=80=A2SW components
> =E2=80=A2Devices
> =E2=80=A2Reviews of DetNet SW, HW designs
> =E2=80=A2Buffers
> =E2=80=A2Important fields
> =E2=80=A2Duplication/deduplication/path and packet management
> =E2=80=A2OAM management algorithms
> =E2=80=A2How much of this is in DetNet scope?
> =E2=80=A2None?
> =E2=80=A2Work with AVnu Alliance?
> =
------------------------------------------------------------------------
>=20
> From: Maik Seewald (maseewal) <maseewal@cisco.com =
<mailto:maseewal@cisco.com>>
> Sent: Tuesday, October 11, 2016 4:09 AM
> To: nfinn; Grossman, Ethan A.
> Cc: detnet@ietf.org <mailto:detnet@ietf.org>
> Subject: Re: [Detnet] DetNet Security Review
> =20
> In parallel, IEEE 1588 has a sub working group defining security (in =
terms of profiles/prongs) for the 1588 protocol.
> For time-sensitive networking, security for critical services (such as =
time) is essential, especially in WAN use cases=E2=80=A6
> Regards, Maik=20
>=20
> From: Norm Finn <nfinn@alumni.caltech.edu =
<mailto:nfinn@alumni.caltech.edu>>
> Date: Dienstag, 11. Oktober 2016 08:05
> To: "Grossman, Ethan A." <eagros@dolby.com <mailto:eagros@dolby.com>>
> Cc: "detnet@ietf.org <mailto:detnet@ietf.org>" <detnet@ietf.org =
<mailto:detnet@ietf.org>>
> Subject: Re: [Detnet] DetNet Security Review
>=20
> You are a regular fountain of good questions lately, Ethan!
>=20
> There are people in NTP/TICTOC looking at time security.
>=20
> Not much else that I know about.
>=20
> =E2=80=94 Norm
>=20
>> On Oct 7, 2016, at 1:13 PM, Grossman, Ethan A. <eagros@dolby.com =
<mailto:eagros@dolby.com>> wrote:
>>=20
>> Hi Folks,
>> Security is of paramount importance for most if not all of the =
networks described in the DetNet use cases. I gather that DetNet itself =
doesn=E2=80=99t have a lot of explicit security aspects, however since =
security in such networks needs to be considered from the start as =
opposed to later, do we have someone among us who is our =E2=80=9Csecurity=
 guru=E2=80=9D who is keeping an eye on our development to make sure we =
don=E2=80=99t miss a trick anywhere? One way or another, I would like to =
be confident that we have this totally covered.
>> Thanks,
>> Ethan.
>> =20
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org <mailto:detnet@ietf.org>
>> MailScanner has detected a possible fraud attempt from =
"urldefense.proofpoint.com" claiming to =
be=C2=A0https://www.ietf.org/mailman/listinfo/detnet =
<https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.ietf.org_mailm=
an_listinfo_detnet&d=3DDQMFAw&c=3DlI8Zb6TzM3d1tX4iEu7bpg&r=3DZcHC6wX_gDwPD=
cfMaFNZiQ&m=3DW4_8szPlllWiEi0_jSw9Fn4cXKwLHz7G4dAb4O8CLhE&s=3DoAgQMPFbBI9q=
mtnr4HqDkAJvJ9MxBgYBzmepAcnIf6g&e=3D>
> _______________________________________________
> detnet mailing list
> detnet@ietf.org <mailto:detnet@ietf.org>
> https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>


--Apple-Mail=_A53F4230-C0A1-43B8-9748-6AF32EA3E2EF
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">There are some good points, here. &nbsp;There are a few more =
points that, I think, would be useful additions to the discussion:<div =
class=3D""><br class=3D""></div><div class=3D"">&nbsp; =E2=80=A2 How =
much time required to set up and/or validate security relationships at =
power up, or to check them after power up?</div><div class=3D""><br =
class=3D""></div><div class=3D"">&nbsp; =E2=80=A2 What effect do various =
encryption/validation choices have on latency and latency =
variation?</div><div class=3D""><br class=3D""></div><div =
class=3D"">&nbsp; =E2=80=A2 Given that on-time delivery can be just as =
important to the proper functioning of some applications as correct =
data, and that encrypting data does not prevent attacks based on =
manipulating the delivery time, what are the advantages/disadvantages of =
end-to-end vs hop-by-hop trust relationships?</div><div class=3D""><br =
class=3D""></div><div class=3D"">I=E2=80=99m sure there are =
more.</div><div class=3D""><br class=3D""></div><div class=3D"">=E2=80=94 =
Norm</div><div class=3D""><br class=3D""><div><blockquote type=3D"cite" =
class=3D""><div class=3D"">On Nov 7, 2016, at 14:55, Grossman, Ethan A. =
&lt;<a href=3D"mailto:eagros@dolby.com" =
class=3D"">eagros@dolby.com</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div =
style=3D"margin-top: 0px; margin-bottom: 0px; font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-indent: 0px; text-transform: =
none; white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" =
class=3D"">Hi Folks,<br class=3D""></div><div style=3D"margin-top: 0px; =
margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; =
font-size: 16px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255);" class=3D"">One of our members who =
is a security specialist sent me a list of preliminary&nbsp;comments and =
recommendations on DetNet Security, which I adapted into a set =
of&nbsp;slides (text below). I will&nbsp;add&nbsp;these slides =
into&nbsp;my DetNet&nbsp;Use Cases Update preso at IETF 97, but I am =
sending them out in advance so&nbsp;you can&nbsp;think about =
them&nbsp;and make&nbsp;comments. My&nbsp;cut and paste of the PPT text =
below may not be&nbsp;very readable - if anyone would rather see the =
original PPT or a PDF version please let me know and I can send it to =
you&nbsp;directly.&nbsp;<br class=3D""></div><div style=3D"margin-top: =
0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255);" class=3D"">Thanks,<br =
class=3D""></div><div style=3D"margin-top: 0px; margin-bottom: 0px; =
font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; =
font-style: normal; font-variant-caps: normal; font-weight: normal; =
letter-spacing: normal; orphans: auto; text-align: start; text-indent: =
0px; text-transform: none; white-space: normal; widows: auto; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: =
rgb(255, 255, 255);" class=3D"">Ethan.<br class=3D""></div><div =
style=3D"margin-top: 0px; margin-bottom: 0px; font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-indent: 0px; text-transform: =
none; white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);" =
class=3D"">---------------------------------------------<br =
class=3D""></div><div style=3D"margin-top: 0px; margin-bottom: 0px; =
font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; =
font-style: normal; font-variant-caps: normal; font-weight: normal; =
letter-spacing: normal; orphans: auto; text-align: start; text-indent: =
0px; text-transform: none; white-space: normal; widows: auto; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: =
rgb(255, 255, 255);" class=3D""><br class=3D""></div><div =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 10pt; =
margin-bottom: 0pt; margin-left: 0.25in; text-indent: -0.25in; =
direction: ltr; unicode-bidi: embed; word-break: normal;" class=3D""><span=
 style=3D"font-size: 28pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
28pt; font-family: Calibri;" class=3D"">DetNet</span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>Security =
Topics</span></div><div style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">Based on =
recommendations from Professor Andrew J Hacker</span></div><div =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 10pt; =
margin-bottom: 0pt; margin-left: 0.25in; text-indent: -0.25in; =
direction: ltr; unicode-bidi: embed; word-break: normal;" class=3D""><span=
 style=3D"font-size: 28pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
28pt; font-family: Calibri;" class=3D"">Cybersecurity Expert in =
Residence, Harrisburg University of Science and Technology and CEO,<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">MistIQ</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>Technologies, =
Inc.</span></div><div style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">Goals of =
this Presentation</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">Thus =
far<span class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>strategy has been =
=E2=80=9CDon=E2=80=99t break security=E2=80=9D</span></div><div =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 10pt; =
margin-bottom: 0pt; margin-left: 0.25in; text-indent: -0.25in; =
direction: ltr; unicode-bidi: embed; word-break: normal;" class=3D""><span=
 style=3D"font-size: 28pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
28pt; font-family: Calibri;" class=3D"">Next steps:</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1in; text-indent: =
-0.5in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D"">1.</span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Now: enumerate<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 24pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 24pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>technologies that have =
potential security implications</span></div><div class=3D"O1" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 1in; text-indent: -0.5in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
24pt;" class=3D"">2.</span><span style=3D"font-size: 24pt; font-family: =
Calibri;" class=3D"">Eventually: identify those<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 24pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 24pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>technologies for which we =
must either</span></div><div class=3D"O2" style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Create a security related =
protocol that doesn=E2=80=99t already exist, or</span></div><div =
class=3D"O2" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Modify an existing protocol for =
use with<span class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 20pt; font-family: Calibri;" =
class=3D"">DetNet</span></div><div class=3D"O2" style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: 0pt; =
margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 20pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span></div><div style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 10pt; margin-bottom: 0pt; =
margin-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;" class=3D""><span style=3D"font-size: 28pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 28pt; =
font-family: Calibri;" class=3D"">Not all<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>use cases require the same =
level of security, so define a set of security functions that =
applications can choose from</span></div><div style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 10pt; margin-bottom: 0pt; =
margin-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;" class=3D""><span style=3D"font-size: 28pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 28pt; =
font-family: Calibri;" class=3D"">Overall Security Strategy =
Recommendation</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">Consider<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>security using =E2=80=9CCIA=E2=
=80=9D principle</span></div><div class=3D"O1" style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: 0pt; =
margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 24pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Confidentiality</span></div><div =
class=3D"O2" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Path choices, =
predictability/unpredictability, encryption, =
privacy/masking</span></div><div class=3D"O1" style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: 0pt; =
margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 24pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Integrity</span></div><div class=3D"O2" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
20pt;" class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 20pt; =
font-family: Calibri;" class=3D"">Ingress device and message =
authorization and access control, device code validation, required code =
reviews, buffer/field/queue integrity validations, parameter/config =
validations, vulnerability management</span></div><div class=3D"O1" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
24pt;" class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Availability</span></div><div =
class=3D"O2" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Availability versus attack =
surface, denial of service, manipulation of time =
sensitivity</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">This<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">preso</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>follows this organization, =
ordered by<span class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D"">function</span></div><div style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 10pt; margin-bottom: 0pt; =
margin-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;" class=3D""><span style=3D"font-size: 28pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 28pt; =
font-family: Calibri;" class=3D"">Documentation =
Recommendations</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">Consolidate =
security discussions into a =E2=80=9C</span><span style=3D"font-size: =
28pt; font-family: Calibri;" class=3D"">DetNet</span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>Cybersecurity=E2=80=9D =
doc</span></div><div class=3D"O1" style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Ethan has done a first cut at =
this =E2=80=93 should it be submitted as a<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 24pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 24pt; font-family: =
Calibri;" class=3D"">draft?</span></div><div class=3D"O1" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
24pt;" class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">If so, then should security =
discussions in existing drafts be replaced with a reference to the new =
security draft?<span =
class=3D"Apple-converted-space">&nbsp;</span></span></div><div =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 10pt; =
margin-bottom: 0pt; margin-left: 0.25in; text-indent: -0.25in; =
direction: ltr; unicode-bidi: embed; word-break: normal;" class=3D""><span=
 style=3D"font-size: 28pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
28pt; font-family: Calibri;" class=3D"">Define set of =E2=80=9C</span><spa=
n style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D"">-specific security components=E2=80=9D</span></div><d=
iv class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Refer to specific existing =
standards where possible</span></div><div class=3D"O1" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
24pt;" class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Create spec for those we must =
create</span></div><div style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">Determine =
which use cases require which security components</span></div><div =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 10pt; =
margin-bottom: 0pt; margin-left: 0.25in; text-indent: -0.25in; =
direction: ltr; unicode-bidi: embed; word-break: normal;" class=3D""><span=
 style=3D"font-size: 28pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span></div><div style=3D"font-family:=
 Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 10pt; margin-bottom: 0pt; =
margin-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;" class=3D""><span style=3D"font-size: 36pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 36pt; =
font-family: Calibri;" class=3D"">DetNet</span><span style=3D"font-size: =
36pt; font-family: Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>Functions with Security =
Implications (1/3)</span></div><div style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">Packet =
replication &amp; elimination</span></div><div class=3D"O1" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
24pt;" class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Effect on existing security =
protocols?</span></div><div class=3D"O2" style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">HTTPS?</span></div><div =
class=3D"O2" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Ipsec</span><span =
style=3D"font-size: 20pt; font-family: Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>tunneling?</span></div><div =
class=3D"O2" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Encrypted =
packets/payloads?</span></div><div class=3D"O1" style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: 0pt; =
margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 24pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">How does the =
predictability/unpredictability of the results of the algorithms used =
(e.g. IEEE 802.1cb) affect overall security of the =
system?</span></div><div class=3D"O1" style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Effect on attacker=E2=80=99s =
ability to inject and validate malicious packets?</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Effects of trade-off between =
increased availability and attack surface?</span></div><div =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 10pt; =
margin-bottom: 0pt; margin-left: 0.25in; text-indent: -0.25in; =
direction: ltr; unicode-bidi: embed; word-break: normal;" class=3D""><span=
 style=3D"font-size: 36pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
36pt; font-family: Calibri;" class=3D"">DetNet</span><span =
style=3D"font-size: 36pt; font-family: Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>Functions with Security =
Implications (2/3)</span></div><div style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">Path =
choice(s) and information about path choice(s)</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Effect of increased attack =
surface?</span></div><div class=3D"O1" style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Can an attacker predetermine a =
path or flow?</span></div><div class=3D"O1" style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: 0pt; =
margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 24pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Possibility/effect of attacker =
changing, influencing, adding a path or flow?</span></div><div =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 10pt; =
margin-bottom: 0pt; margin-left: 0.25in; text-indent: -0.25in; =
direction: ltr; unicode-bidi: embed; word-break: normal;" class=3D""><span=
 style=3D"font-size: 28pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
28pt; font-family: Calibri;" class=3D"">Logical segmentation =
between<span class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D"">/non-</span><span style=3D"font-size: 28pt; =
font-family: Calibri;" class=3D"">DetNet</span><span style=3D"font-size: =
28pt; font-family: Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>paths and =
flows</span></div><div class=3D"O1" style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Requirements?</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Network =
slicing?</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">Query/response/process execution =
considerations/differences</span></div><div class=3D"O2" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
20pt;" class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 20pt; =
font-family: Calibri;" class=3D"">Information Technology =
vs</span></div><div class=3D"O2" style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Operational =
Technology</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span></div><div=
 style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 10pt; =
margin-bottom: 0pt; margin-left: 0.25in; text-indent: -0.25in; =
direction: ltr; unicode-bidi: embed; word-break: normal;" class=3D""><span=
 style=3D"font-size: 36pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
36pt; font-family: Calibri;" class=3D"">DetNet</span><span =
style=3D"font-size: 36pt; font-family: Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>Functions with Security =
Implications (3/3)</span></div><div class=3D"O0" style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 10pt; margin-bottom: 0pt; =
margin-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 28pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 28pt; =
font-family: Calibri;" class=3D"">Packet fields which require =
encryption/obfuscation</span></div><div class=3D"O1" style=3D"font-family:=
 Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: 0pt; =
margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 24pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Examples</span></div><div class=3D"O2" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
20pt;" class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 20pt; =
font-family: Calibri;" class=3D"">Path routes</span></div><div =
class=3D"O2" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Timing fields</span></div><div =
class=3D"O2" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Duplicate packet =
flags</span></div><div class=3D"O2" style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Packet content (e.g. control =
messages)</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">Device =
authorization and access to<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>domain</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">At ingress, egress, along =
path</span></div><div class=3D"O1" style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Part of<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 24pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 24pt; font-family: =
Calibri;" class=3D""><span class=3D"Apple-converted-space">&nbsp;</span>or=
 higher level application?</span></div><div style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 10pt; margin-bottom: 0pt; =
margin-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;" class=3D""><span style=3D"font-size: 28pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 28pt; =
font-family: Calibri;" class=3D"">Message authorization</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Part of<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 24pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 24pt; font-family: =
Calibri;" class=3D""><span class=3D"Apple-converted-space">&nbsp;</span>or=
 higher level application?</span></div><div class=3D"O1" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
24pt;" class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">If vulnerabilities in<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 24pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 24pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>affect message, waiting =
until message it passed up to higher level application may affect higher =
level applications ability to properly and securely assess the =
message</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 36pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 36pt; font-family: Calibri;" class=3D"">Runtime =
Monitoring Recommendations</span></div><div style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 10pt; margin-bottom: 0pt; =
margin-left: 0.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;" class=3D""><span style=3D"font-size: 28pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 28pt; =
font-family: Calibri;" class=3D"">Runtime mechanisms to</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Detect and disconnect =
misbehaving components and/or devices</span></div><div class=3D"O1" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
24pt;" class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Monitor OAM integrity and<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 24pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 24pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>security framework =
integrity</span></div><div class=3D"O1" style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Monitor performance - provide =
alerts and corrective action at appropriate points</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Validate sensitive/critical =
parameter configurations</span></div><div class=3D"O1" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 0.75in; text-indent: -0.25in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
24pt;" class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Validate (and prevent manipulation of) =
time-sensitive algorithms/values</span></div><div class=3D"O2" =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: =
0pt; margin-left: 1.25in; text-indent: -0.25in; direction: ltr; =
unicode-bidi: embed; word-break: normal;"><span style=3D"font-size: =
20pt;" class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 20pt; =
font-family: Calibri;" class=3D"">Use backup algorithms for =
this?</span></div><div class=3D"O1" style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Log operations (which operations =
require logging?)</span></div><div class=3D"O1" style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: 0pt; =
margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 24pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Validate active<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 24pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 24pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>devices=E2=80=99 executable =
code?</span></div><div style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">Embed =
portions of<span class=3D"Apple-converted-space">&nbsp;</span></span><span=
 style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>security intelligence =
directly into data</span></div><div class=3D"O1" style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: 0pt; =
margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 24pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Packets can contain dynamic data in =
addition to content calculated by network =
infrastructure</span></div><div class=3D"O1" style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: 0pt; =
margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 24pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">Refer to Author=E2=80=99s research and =
IP on this topic, for example a cybersecurity framework that places =
functionality and intelligence directly within data packets to provide =
dynamic and contextual correlation of information to improve control and =
precision over packet security, privacy and network =
flow</span></div><div style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">Considerations=
 for DOS attacks - validation/priority mechanisms must account =
for</span></div><div class=3D"O2" style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Global device overruns =
making<span class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 20pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 20pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>goals =
unobtainable</span></div><div class=3D"O2" style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: 0pt; =
margin-left: 1.25in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 20pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 20pt; =
font-family: Calibri;" class=3D"">Attacker pre-provisioning DDOS =
conditions</span></div><div class=3D"O2" style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 1.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 20pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
20pt; font-family: Calibri;" class=3D"">Service lost due to malicious =
timing changes</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 40pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 40pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 40pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>Implementation/Development =
Process</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">Certification/validation of<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>components</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">HW components</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">SW components</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Devices</span></div><div =
style=3D"font-family: Calibri, Arial, Helvetica, sans-serif; font-size: =
16px; font-style: normal; font-variant-caps: normal; font-weight: =
normal; letter-spacing: normal; orphans: auto; text-align: start; =
text-transform: none; white-space: normal; widows: auto; word-spacing: =
0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, =
255); line-height: 14.399999618530273px; margin-top: 10pt; =
margin-bottom: 0pt; margin-left: 0.25in; text-indent: -0.25in; =
direction: ltr; unicode-bidi: embed; word-break: normal;" class=3D""><span=
 style=3D"font-size: 28pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
28pt; font-family: Calibri;" class=3D"">Reviews of<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>SW, HW =
designs</span></div><div class=3D"O1" style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Buffers</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Important =
fields</span></div><div class=3D"O1" style=3D"font-family: Calibri, =
Arial, Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Duplication/deduplication/path =
and packet management</span></div><div class=3D"O1" style=3D"font-family: =
Calibri, Arial, Helvetica, sans-serif; font-size: 16px; font-style: =
normal; font-variant-caps: normal; font-weight: normal; letter-spacing: =
normal; orphans: auto; text-align: start; text-transform: none; =
white-space: normal; widows: auto; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); =
line-height: 14.399999618530273px; margin-top: 5pt; margin-bottom: 0pt; =
margin-left: 0.75in; text-indent: -0.25in; direction: ltr; unicode-bidi: =
embed; word-break: normal;"><span style=3D"font-size: 24pt;" =
class=3D""><span style=3D"font-family: Arial;" =
class=3D"">=E2=80=A2</span></span><span style=3D"font-size: 24pt; =
font-family: Calibri;" class=3D"">OAM management =
algorithms</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D""><span style=3D"font-size: 28pt;" class=3D""><span =
style=3D"font-family: Arial;" class=3D"">=E2=80=A2</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" class=3D"">How much of =
this is in<span class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 28pt; font-family: Calibri;" =
class=3D"">DetNet</span><span style=3D"font-size: 28pt; font-family: =
Calibri;" class=3D""><span =
class=3D"Apple-converted-space">&nbsp;</span>scope?</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">None?</span></div><div =
class=3D"O1" style=3D"font-family: Calibri, Arial, Helvetica, =
sans-serif; font-size: 16px; font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-transform: none; white-space: normal; widows: =
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 5pt; margin-bottom: 0pt; margin-left: 0.75in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;"><span =
style=3D"font-size: 24pt;" class=3D""><span style=3D"font-family: =
Arial;" class=3D"">=E2=80=A2</span></span><span style=3D"font-size: =
24pt; font-family: Calibri;" class=3D"">Work with<span =
class=3D"Apple-converted-space">&nbsp;</span></span><span =
style=3D"font-size: 24pt; font-family: Calibri;" class=3D"">AVnu =
Alliance</span><span style=3D"font-size: 24pt; font-family: Calibri;" =
class=3D"">?</span></div><div style=3D"font-family: Calibri, Arial, =
Helvetica, sans-serif; font-size: 16px; font-style: normal; =
font-variant-caps: normal; font-weight: normal; letter-spacing: normal; =
orphans: auto; text-align: start; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); line-height: 14.399999618530273px; =
margin-top: 10pt; margin-bottom: 0pt; margin-left: 0.25in; text-indent: =
-0.25in; direction: ltr; unicode-bidi: embed; word-break: normal;" =
class=3D"">---------------------------------------------------------------=
---------<br class=3D""></div><div style=3D"margin-top: 0px; =
margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; =
font-size: 16px; font-style: normal; font-variant-caps: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255);" class=3D""><br =
class=3D""></div><div style=3D"font-style: normal; font-variant-caps: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
background-color: rgb(255, 255, 255); word-wrap: break-word; font-size: =
14px; font-family: Calibri, sans-serif;" class=3D""><hr tabindex=3D"-1" =
style=3D"display: inline-block; width: 945.6875px;" class=3D""><div =
id=3D"divRplyFwdMsg" dir=3D"ltr" class=3D""><font face=3D"Calibri, =
sans-serif" style=3D"font-size: 11pt;" class=3D""><b =
class=3D"">From:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>Maik Seewald (maseewal) =
&lt;<a href=3D"mailto:maseewal@cisco.com" =
class=3D"">maseewal@cisco.com</a>&gt;<br class=3D""><b =
class=3D"">Sent:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>Tuesday, October 11, 2016 =
4:09 AM<br class=3D""><b class=3D"">To:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>nfinn; Grossman, Ethan =
A.<br class=3D""><b class=3D"">Cc:</b><span =
class=3D"Apple-converted-space">&nbsp;</span><a =
href=3D"mailto:detnet@ietf.org" class=3D"">detnet@ietf.org</a><br =
class=3D""><b class=3D"">Subject:</b><span =
class=3D"Apple-converted-space">&nbsp;</span>Re: [Detnet] DetNet =
Security Review</font><div class=3D"">&nbsp;</div></div><div =
class=3D""><div class=3D"">In parallel, IEEE 1588 has a sub working =
group defining security (in terms of profiles/prongs) for the 1588 =
protocol.</div><div class=3D"">For time-sensitive networking, security =
for critical services (such as time) is essential, especially in WAN use =
cases=E2=80=A6</div><div class=3D"">Regards, Maik&nbsp;</div><div =
class=3D""><br class=3D""></div><span id=3D"OLK_SRC_BODY_SECTION" =
class=3D""><div style=3D"font-family: Calibri; font-size: 11pt; =
text-align: left; border-width: 1pt medium medium; border-style: solid =
none none; padding: 3pt 0in 0in; border-top-color: rgb(181, 196, 223);" =
class=3D""><span style=3D"font-weight: bold;" class=3D"">From:<span =
class=3D"Apple-converted-space">&nbsp;</span></span>Norm Finn &lt;<a =
href=3D"mailto:nfinn@alumni.caltech.edu" =
class=3D"">nfinn@alumni.caltech.edu</a>&gt;<br class=3D""><span =
style=3D"font-weight: bold;" class=3D"">Date:<span =
class=3D"Apple-converted-space">&nbsp;</span></span>Dienstag, 11. =
Oktober 2016 08:05<br class=3D""><span style=3D"font-weight: bold;" =
class=3D"">To:<span =
class=3D"Apple-converted-space">&nbsp;</span></span>"Grossman, Ethan A." =
&lt;<a href=3D"mailto:eagros@dolby.com" =
class=3D"">eagros@dolby.com</a>&gt;<br class=3D""><span =
style=3D"font-weight: bold;" class=3D"">Cc:<span =
class=3D"Apple-converted-space">&nbsp;</span></span>"<a =
href=3D"mailto:detnet@ietf.org" class=3D"">detnet@ietf.org</a>" &lt;<a =
href=3D"mailto:detnet@ietf.org" class=3D"">detnet@ietf.org</a>&gt;<br =
class=3D""><span style=3D"font-weight: bold;" class=3D"">Subject:<span =
class=3D"Apple-converted-space">&nbsp;</span></span>Re: [Detnet] DetNet =
Security Review<br class=3D""></div><div class=3D""><br =
class=3D""></div><div class=3D""><div class=3D"" style=3D"word-wrap: =
break-word;">You are a regular fountain of good questions lately, =
Ethan!<div class=3D""><br class=3D""></div><div class=3D"">There are =
people in NTP/TICTOC looking at time security.</div><div class=3D""><br =
class=3D""></div><div class=3D"">Not much else that I know =
about.</div><div class=3D""><br class=3D""></div><div class=3D"">=E2=80=94=
 Norm</div><div class=3D""><br class=3D""><div class=3D""><div =
class=3D""><blockquote type=3D"cite" class=3D""><div class=3D"">On Oct =
7, 2016, at 1:13 PM, Grossman, Ethan A. &lt;<a =
href=3D"mailto:eagros@dolby.com" class=3D"">eagros@dolby.com</a>&gt; =
wrote:</div><br class=3D"Apple-interchange-newline"><div class=3D""><font =
face=3D"Calibri" size=3D"2" class=3D"" style=3D"font-style: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px;"><span class=3D"" style=3D"font-size: =
11pt;"><div class=3D"">Hi Folks,</div><div class=3D"">Security is of =
paramount importance for most if not all of the networks described in =
the DetNet use cases. I gather that DetNet itself doesn=E2=80=99t have a =
lot of explicit security aspects, however since security in such =
networks needs to be considered from the start as opposed to later, do =
we have someone among us who is our =E2=80=9Csecurity guru=E2=80=9D who =
is keeping an eye on our development to make sure we don=E2=80=99t miss =
a trick anywhere? One way or another, I would like to be confident that =
we have this totally covered.</div><div class=3D"">Thanks,</div><div =
class=3D"">Ethan.</div><div class=3D"">&nbsp;</div></span></font><span =
class=3D"" style=3D"font-family: Helvetica; font-size: 12px; font-style: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px; float: none; display: inline =
!important;">_______________________________________________</span><br =
class=3D"" style=3D"font-family: Helvetica; font-size: 12px; font-style: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px;"><span class=3D"" =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px; float: none; display: inline =
!important;">detnet mailing list</span><br class=3D"" =
style=3D"font-family: Helvetica; font-size: 12px; font-style: normal; =
font-weight: normal; letter-spacing: normal; orphans: auto; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
widows: auto; word-spacing: 0px;"><a href=3D"mailto:detnet@ietf.org" =
class=3D"" style=3D"font-family: Helvetica; font-size: 12px; font-style: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px;">detnet@ietf.org</a><br =
class=3D"" style=3D"font-family: Helvetica; font-size: 12px; font-style: =
normal; font-weight: normal; letter-spacing: normal; orphans: auto; =
text-align: start; text-indent: 0px; text-transform: none; white-space: =
normal; widows: auto; word-spacing: 0px;"><a =
href=3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.ietf.or=
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From: "Grossman, Ethan A." <eagros@dolby.com>
To: Norman Finn <nfinn@alumni.caltech.edu>
Thread-Topic: [Detnet] DetNet Security Review
Thread-Index: AdIg1UITR2QEeogET/23bai5Z4zLUgC6toQAAAqgNYAFUxPQiAARx2QA//96jU4=
Date: Mon, 7 Nov 2016 21:13:24 +0000
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References: <CA613C98-0C16-43E9-AD70-C35395F9D39F@alumni.caltech.edu> <D422942B.5635B%maseewal@cisco.com> <1478552162851.30524@dolby.com>, <09C1370D-9A40-4A93-A699-E35ACA7D2DBF@alumni.caltech.edu>
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Cc: "detnet@ietf.org" <detnet@ietf.org>
Subject: Re: [Detnet] DetNet Security Review
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Thanks Norm, I'll add these to my preso. Keep those cards and letters comin=
g.

Ethan.

________________________________
From: Norman Finn <nfinn@alumni.caltech.edu>
Sent: Monday, November 7, 2016 1:07 PM
To: Grossman, Ethan A.
Cc: detnet@ietf.org
Subject: Re: [Detnet] DetNet Security Review

There are some good points, here.  There are a few more points that, I thin=
k, would be useful additions to the discussion:

  =95 How much time required to set up and/or validate security relationshi=
ps at power up, or to check them after power up?

  =95 What effect do various encryption/validation choices have on latency =
and latency variation?

  =95 Given that on-time delivery can be just as important to the proper fu=
nctioning of some applications as correct data, and that encrypting data do=
es not prevent attacks based on manipulating the delivery time, what are th=
e advantages/disadvantages of end-to-end vs hop-by-hop trust relationships?

I=92m sure there are more.

=97 Norm

On Nov 7, 2016, at 14:55, Grossman, Ethan A. <eagros@dolby.com<mailto:eagro=
s@dolby.com>> wrote:

Hi Folks,
One of our members who is a security specialist sent me a list of prelimina=
ry comments and recommendations on DetNet Security, which I adapted into a =
set of slides (text below). I will add these slides into my DetNet Use Case=
s Update preso at IETF 97, but I am sending them out in advance so you can =
think about them and make comments. My cut and paste of the PPT text below =
may not be very readable - if anyone would rather see the original PPT or a=
 PDF version please let me know and I can send it to you directly.
Thanks,
Ethan.
---------------------------------------------

=95DetNet Security Topics
=95Based on recommendations from Professor Andrew J Hacker
=95Cybersecurity Expert in Residence, Harrisburg University of Science and =
Technology and CEO, MistIQ Technologies, Inc.
=95Goals of this Presentation
=95Thus far DetNet strategy has been =93Don=92t break security=94
=95Next steps:
1.Now: enumerate DetNet technologies that have potential security implicati=
ons
2.Eventually: identify those DetNet technologies for which we must either
=95Create a security related protocol that doesn=92t already exist, or
=95Modify an existing protocol for use with DetNet
=95
=95Not all DetNet use cases require the same level of security, so define a=
 set of security functions that applications can choose from
=95Overall Security Strategy Recommendation
=95Consider DetNet security using =93CIA=94 principle
=95Confidentiality
=95Path choices, predictability/unpredictability, encryption, privacy/maski=
ng
=95Integrity
=95Ingress device and message authorization and access control, device code=
 validation, required code reviews, buffer/field/queue integrity validation=
s, parameter/config validations, vulnerability management
=95Availability
=95Availability versus attack surface, denial of service, manipulation of t=
ime sensitivity
=95This preso follows this organization, ordered by DetNetfunction
=95Documentation Recommendations
=95Consolidate security discussions into a =93DetNet Cybersecurity=94 doc
=95Ethan has done a first cut at this =96 should it be submitted as a DetNe=
tdraft?
=95If so, then should security discussions in existing drafts be replaced w=
ith a reference to the new security draft?
=95Define set of =93DetNet-specific security components=94
=95Refer to specific existing standards where possible
=95Create spec for those we must create
=95Determine which use cases require which security components
=95
=95DetNet Functions with Security Implications (1/3)
=95Packet replication & elimination
=95Effect on existing security protocols?
=95HTTPS?
=95Ipsec tunneling?
=95Encrypted packets/payloads?
=95How does the predictability/unpredictability of the results of the algor=
ithms used (e.g. IEEE 802.1cb) affect overall security of the system?
=95Effect on attacker=92s ability to inject and validate malicious packets?
=95Effects of trade-off between increased availability and attack surface?
=95DetNet Functions with Security Implications (2/3)
=95Path choice(s) and information about path choice(s)
=95Effect of increased attack surface?
=95Can an attacker predetermine a path or flow?
=95Possibility/effect of attacker changing, influencing, adding a path or f=
low?
=95Logical segmentation between DetNet/non-DetNet paths and flows
=95Requirements?
=95Network slicing?
=95Query/response/process execution considerations/differences
=95Information Technology vs
=95Operational Technology
=95
=95DetNet Functions with Security Implications (3/3)
=95Packet fields which require encryption/obfuscation
=95Examples
=95Path routes
=95Timing fields
=95Duplicate packet flags
=95Packet content (e.g. control messages)
=95Device authorization and access to DetNet domain
=95At ingress, egress, along path
=95Part of DetNet or higher level application?
=95Message authorization
=95Part of DetNet or higher level application?
=95If vulnerabilities in DetNet affect message, waiting until message it pa=
ssed up to higher level application may affect higher level applications ab=
ility to properly and securely assess the message
=95Runtime Monitoring Recommendations
=95Runtime mechanisms to
=95Detect and disconnect misbehaving components and/or devices
=95Monitor OAM integrity and DetNet security framework integrity
=95Monitor performance - provide alerts and corrective action at appropriat=
e points
=95Validate sensitive/critical parameter configurations
=95Validate (and prevent manipulation of) time-sensitive algorithms/values
=95Use backup algorithms for this?
=95Log operations (which operations require logging?)
=95Validate active DetNet devices=92 executable code?
=95Embed portions of DetNet security intelligence directly into data
=95Packets can contain dynamic data in addition to content calculated by ne=
twork infrastructure
=95Refer to Author=92s research and IP on this topic, for example a cyberse=
curity framework that places functionality and intelligence directly within=
 data packets to provide dynamic and contextual correlation of information =
to improve control and precision over packet security, privacy and network =
flow
=95Considerations for DOS attacks - validation/priority mechanisms must acc=
ount for
=95Global device overruns making DetNet goals unobtainable
=95Attacker pre-provisioning DDOS conditions
=95Service lost due to malicious timing changes
=95DetNet Implementation/Development Process
=95Certification/validation of DetNet components
=95HW components
=95SW components
=95Devices
=95Reviews of DetNet SW, HW designs
=95Buffers
=95Important fields
=95Duplication/deduplication/path and packet management
=95OAM management algorithms
=95How much of this is in DetNet scope?
=95None?
=95Work with AVnu Alliance?
------------------------------------------------------------------------

________________________________
From: Maik Seewald (maseewal) <maseewal@cisco.com<mailto:maseewal@cisco.com=
>>
Sent: Tuesday, October 11, 2016 4:09 AM
To: nfinn; Grossman, Ethan A.
Cc: detnet@ietf.org<mailto:detnet@ietf.org>
Subject: Re: [Detnet] DetNet Security Review

In parallel, IEEE 1588 has a sub working group defining security (in terms =
of profiles/prongs) for the 1588 protocol.
For time-sensitive networking, security for critical services (such as time=
) is essential, especially in WAN use cases=85
Regards, Maik

From: Norm Finn <nfinn@alumni.caltech.edu<mailto:nfinn@alumni.caltech.edu>>
Date: Dienstag, 11. Oktober 2016 08:05
To: "Grossman, Ethan A." <eagros@dolby.com<mailto:eagros@dolby.com>>
Cc: "detnet@ietf.org<mailto:detnet@ietf.org>" <detnet@ietf.org<mailto:detne=
t@ietf.org>>
Subject: Re: [Detnet] DetNet Security Review

You are a regular fountain of good questions lately, Ethan!

There are people in NTP/TICTOC looking at time security.

Not much else that I know about.

=97 Norm

On Oct 7, 2016, at 1:13 PM, Grossman, Ethan A. <eagros@dolby.com<mailto:eag=
ros@dolby.com>> wrote:

Hi Folks,
Security is of paramount importance for most if not all of the networks des=
cribed in the DetNet use cases. I gather that DetNet itself doesn=92t have =
a lot of explicit security aspects, however since security in such networks=
 needs to be considered from the start as opposed to later, do we have some=
one among us who is our =93security guru=94 who is keeping an eye on our de=
velopment to make sure we don=92t miss a trick anywhere? One way or another=
, I would like to be confident that we have this totally covered.
Thanks,
Ethan.

_______________________________________________
detnet mailing list
detnet@ietf.org<mailto:detnet@ietf.org>
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<body dir=3D"ltr" style=3D"font-size:12pt;color:#000000;background-color:#F=
FFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;">
<p>Thanks Norm, I'll add these to my preso. Keep those cards and letters co=
ming.&nbsp;<br>
</p>
<p>Ethan.<br>
</p>
<hr tabindex=3D"-1" style=3D"font-size: 12pt; display: inline-block; width:=
 98%;">
<div style=3D"word-wrap:break-word">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" co=
lor=3D"#000000" style=3D"font-size:11pt"><b>From:</b> Norman Finn &lt;nfinn=
@alumni.caltech.edu&gt;<br>
<b>Sent:</b> Monday, November 7, 2016 1:07 PM<br>
<b>To:</b> Grossman, Ethan A.<br>
<b>Cc:</b> detnet@ietf.org<br>
<b>Subject:</b> Re: [Detnet] DetNet Security Review</font>
<div>&nbsp;</div>
</div>
<div>There are some good points, here. &nbsp;There are a few more points th=
at, I think, would be useful additions to the discussion:
<div class=3D""><br class=3D"">
</div>
<div class=3D"">&nbsp; =95 How much time required to set up and/or validate=
 security relationships at power up, or to check them after power up?</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">&nbsp; =95 What effect do various encryption/validation cho=
ices have on latency and latency variation?</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">&nbsp; =95 Given that on-time delivery can be just as impor=
tant to the proper functioning of some applications as correct data, and th=
at encrypting data does not prevent attacks based on manipulating the deliv=
ery time, what are the advantages/disadvantages
 of end-to-end vs hop-by-hop trust relationships?</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">I=92m sure there are more.</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">=97 Norm</div>
<div class=3D""><br class=3D"">
<div>
<blockquote type=3D"cite" class=3D"">
<div class=3D"">On Nov 7, 2016, at 14:55, Grossman, Ethan A. &lt;<a href=3D=
"mailto:eagros@dolby.com" class=3D"">eagros@dolby.com</a>&gt; wrote:</div>
<br class=3D"Apple-interchange-newline">
<div class=3D"">
<div class=3D"" style=3D"margin-top:0px; margin-bottom:0px; font-family:Cal=
ibri,Arial,Helvetica,sans-serif; font-size:16px; font-style:normal; font-we=
ight:normal; letter-spacing:normal; orphans:auto; text-align:start; text-in=
dent:0px; text-transform:none; white-space:normal; widows:auto; word-spacin=
g:0px; background-color:rgb(255,255,255)">
Hi Folks,<br class=3D"">
</div>
<div class=3D"" style=3D"margin-top:0px; margin-bottom:0px; font-family:Cal=
ibri,Arial,Helvetica,sans-serif; font-size:16px; font-style:normal; font-we=
ight:normal; letter-spacing:normal; orphans:auto; text-align:start; text-in=
dent:0px; text-transform:none; white-space:normal; widows:auto; word-spacin=
g:0px; background-color:rgb(255,255,255)">
One of our members who is a security specialist sent me a list of prelimina=
ry&nbsp;comments and recommendations on DetNet Security, which I adapted in=
to a set of&nbsp;slides (text below). I will&nbsp;add&nbsp;these slides int=
o&nbsp;my DetNet&nbsp;Use Cases Update preso at IETF 97, but I
 am sending them out in advance so&nbsp;you can&nbsp;think about them&nbsp;=
and make&nbsp;comments. My&nbsp;cut and paste of the PPT text below may not=
 be&nbsp;very readable - if anyone would rather see the original PPT or a P=
DF version please let me know and I can send it to you&nbsp;directly.&nbsp;=
<br class=3D"">
</div>
<div class=3D"" style=3D"margin-top:0px; margin-bottom:0px; font-family:Cal=
ibri,Arial,Helvetica,sans-serif; font-size:16px; font-style:normal; font-we=
ight:normal; letter-spacing:normal; orphans:auto; text-align:start; text-in=
dent:0px; text-transform:none; white-space:normal; widows:auto; word-spacin=
g:0px; background-color:rgb(255,255,255)">
Thanks,<br class=3D"">
</div>
<div class=3D"" style=3D"margin-top:0px; margin-bottom:0px; font-family:Cal=
ibri,Arial,Helvetica,sans-serif; font-size:16px; font-style:normal; font-we=
ight:normal; letter-spacing:normal; orphans:auto; text-align:start; text-in=
dent:0px; text-transform:none; white-space:normal; widows:auto; word-spacin=
g:0px; background-color:rgb(255,255,255)">
Ethan.<br class=3D"">
</div>
<div class=3D"" style=3D"margin-top:0px; margin-bottom:0px; font-family:Cal=
ibri,Arial,Helvetica,sans-serif; font-size:16px; font-style:normal; font-we=
ight:normal; letter-spacing:normal; orphans:auto; text-align:start; text-in=
dent:0px; text-transform:none; white-space:normal; widows:auto; word-spacin=
g:0px; background-color:rgb(255,255,255)">
---------------------------------------------<br class=3D"">
</div>
<div class=3D"" style=3D"margin-top:0px; margin-bottom:0px; font-family:Cal=
ibri,Arial,Helvetica,sans-serif; font-size:16px; font-style:normal; font-we=
ight:normal; letter-spacing:normal; orphans:auto; text-align:start; text-in=
dent:0px; text-transform:none; white-space:normal; widows:auto; word-spacin=
g:0px; background-color:rgb(255,255,255)">
<br class=3D"">
</div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">DetNet</span><span class=3D"" style=3D"font-size:28pt; fon=
t-family:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>Securi=
ty
 Topics</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Based on recommendations from Professor Andrew J Hacker</s=
pan></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Cybersecurity Expert in Residence, Harrisburg University o=
f Science and Technology and CEO,<span class=3D"Apple-converted-space">&nbs=
p;</span></span><span class=3D"" style=3D"font-size:28pt; font-family:Calib=
ri">MistIQ</span><span class=3D"" style=3D"font-size:28pt; font-family:Cali=
bri"><span class=3D"Apple-converted-space">&nbsp;</span>Technologies,
 Inc.</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Goals of this Presentation</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Thus far<span class=3D"Apple-converted-space">&nbsp;</span=
></span><span class=3D"" style=3D"font-size:28pt; font-family:Calibri">DetN=
et</span><span class=3D"" style=3D"font-size:28pt; font-family:Calibri"><sp=
an class=3D"Apple-converted-space">&nbsp;</span>strategy
 has been =93Don=92t break security=94</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Next steps:</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1i=
n; text-indent:-0.5in; direction:ltr; unicode-bidi:embed; word-break:normal=
">
<span class=3D"" style=3D"font-size:24pt">1.</span><span class=3D"" style=
=3D"font-size:24pt; font-family:Calibri">Now: enumerate<span class=3D"Apple=
-converted-space">&nbsp;</span></span><span class=3D"" style=3D"font-size:2=
4pt; font-family:Calibri">DetNet</span><span class=3D"" style=3D"font-size:=
24pt; font-family:Calibri"><span class=3D"Apple-converted-space">&nbsp;</sp=
an>technologies
 that have potential security implications</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1i=
n; text-indent:-0.5in; direction:ltr; unicode-bidi:embed; word-break:normal=
">
<span class=3D"" style=3D"font-size:24pt">2.</span><span class=3D"" style=
=3D"font-size:24pt; font-family:Calibri">Eventually: identify those<span cl=
ass=3D"Apple-converted-space">&nbsp;</span></span><span class=3D"" style=3D=
"font-size:24pt; font-family:Calibri">DetNet</span><span class=3D"" style=
=3D"font-size:24pt; font-family:Calibri"><span class=3D"Apple-converted-spa=
ce">&nbsp;</span>technologies
 for which we must either</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Create a security related protocol that doesn=92t already =
exist, or</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Modify an existing protocol for use with<span class=3D"App=
le-converted-space">&nbsp;</span></span><span class=3D"" style=3D"font-size=
:20pt; font-family:Calibri">DetNet</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Not all<span class=3D"Apple-converted-space">&nbsp;</span>=
</span><span class=3D"" style=3D"font-size:28pt; font-family:Calibri">DetNe=
t</span><span class=3D"" style=3D"font-size:28pt; font-family:Calibri"><spa=
n class=3D"Apple-converted-space">&nbsp;</span>use
 cases require the same level of security, so define a set of security func=
tions that applications can choose from</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Overall Security Strategy Recommendation</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Consider<span class=3D"Apple-converted-space">&nbsp;</span=
></span><span class=3D"" style=3D"font-size:28pt; font-family:Calibri">DetN=
et</span><span class=3D"" style=3D"font-size:28pt; font-family:Calibri"><sp=
an class=3D"Apple-converted-space">&nbsp;</span>security
 using =93CIA=94 principle</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Confidentiality</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Path choices, predictability/unpredictability, encryption,=
 privacy/masking</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Integrity</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Ingress device and message authorization and access contro=
l, device code validation, required code reviews,
 buffer/field/queue integrity validations, parameter/config validations, vu=
lnerability management</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Availability</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Availability versus attack surface, denial of service, man=
ipulation of time sensitivity</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">This<span class=3D"Apple-converted-space">&nbsp;</span></s=
pan><span class=3D"" style=3D"font-size:28pt; font-family:Calibri">preso</s=
pan><span class=3D"" style=3D"font-size:28pt; font-family:Calibri"><span cl=
ass=3D"Apple-converted-space">&nbsp;</span>follows
 this organization, ordered by<span class=3D"Apple-converted-space">&nbsp;<=
/span></span><span class=3D"" style=3D"font-size:28pt; font-family:Calibri"=
>DetNet</span><span class=3D"" style=3D"font-size:28pt; font-family:Calibri=
">function</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Documentation Recommendations</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Consolidate security discussions into a =93</span><span cl=
ass=3D"" style=3D"font-size:28pt; font-family:Calibri">DetNet</span><span c=
lass=3D"" style=3D"font-size:28pt; font-family:Calibri"><span class=3D"Appl=
e-converted-space">&nbsp;</span>Cybersecurity=94
 doc</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Ethan has done a first cut at this =96 should it be submit=
ted as a<span class=3D"Apple-converted-space">&nbsp;</span></span><span cla=
ss=3D"" style=3D"font-size:24pt; font-family:Calibri">DetNet</span><span cl=
ass=3D"" style=3D"font-size:24pt; font-family:Calibri">draft?</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">If so, then should security discussions in existing drafts=
 be replaced with a reference to the new security
 draft?<span class=3D"Apple-converted-space">&nbsp;</span></span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Define set of =93</span><span class=3D"" style=3D"font-siz=
e:28pt; font-family:Calibri">DetNet</span><span class=3D"" style=3D"font-si=
ze:28pt; font-family:Calibri">-specific
 security components=94</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Refer to specific existing standards where possible</span>=
</div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Create spec for those we must create</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Determine which use cases require which security component=
s</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:36pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:36pt; font=
-family:Calibri">DetNet</span><span class=3D"" style=3D"font-size:36pt; fon=
t-family:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>Functi=
ons
 with Security Implications (1/3)</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Packet replication &amp; elimination</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Effect on existing security protocols?</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">HTTPS?</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Ipsec</span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>tunneli=
ng?</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Encrypted packets/payloads?</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">How does the predictability/unpredictability of the result=
s of the algorithms used (e.g. IEEE 802.1cb) affect
 overall security of the system?</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Effect on attacker=92s ability to inject and validate mali=
cious packets?</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Effects of trade-off between increased availability and at=
tack surface?</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:36pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:36pt; font=
-family:Calibri">DetNet</span><span class=3D"" style=3D"font-size:36pt; fon=
t-family:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>Functi=
ons
 with Security Implications (2/3)</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Path choice(s) and information about path choice(s)</span>=
</div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Effect of increased attack surface?</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Can an attacker predetermine a path or flow?</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Possibility/effect of attacker changing, influencing, addi=
ng a path or flow?</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Logical segmentation between<span class=3D"Apple-converted=
-space">&nbsp;</span></span><span class=3D"" style=3D"font-size:28pt; font-=
family:Calibri">DetNet</span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">/non-</span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">DetNet</span><span class=3D"" style=3D"font-size:28pt; fon=
t-family:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>paths
 and flows</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Requirements?</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Network slicing?</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Query/response/process execution considerations/difference=
s</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Information Technology vs</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Operational Technology</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:36pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:36pt; font=
-family:Calibri">DetNet</span><span class=3D"" style=3D"font-size:36pt; fon=
t-family:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>Functi=
ons
 with Security Implications (3/3)</span></div>
<div class=3D"O0" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0=
.25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:n=
ormal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Packet fields which require encryption/obfuscation</span><=
/div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Examples</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Path routes</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Timing fields</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Duplicate packet flags</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Packet content (e.g. control messages)</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Device authorization and access to<span class=3D"Apple-con=
verted-space">&nbsp;</span></span><span class=3D"" style=3D"font-size:28pt;=
 font-family:Calibri">DetNet</span><span class=3D"" style=3D"font-size:28pt=
; font-family:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>d=
omain</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">At ingress, egress, along path</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Part of<span class=3D"Apple-converted-space">&nbsp;</span>=
</span><span class=3D"" style=3D"font-size:24pt; font-family:Calibri">DetNe=
t</span><span class=3D"" style=3D"font-size:24pt; font-family:Calibri"><spa=
n class=3D"Apple-converted-space">&nbsp;</span>or
 higher level application?</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Message authorization</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Part of<span class=3D"Apple-converted-space">&nbsp;</span>=
</span><span class=3D"" style=3D"font-size:24pt; font-family:Calibri">DetNe=
t</span><span class=3D"" style=3D"font-size:24pt; font-family:Calibri"><spa=
n class=3D"Apple-converted-space">&nbsp;</span>or
 higher level application?</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">If vulnerabilities in<span class=3D"Apple-converted-space"=
>&nbsp;</span></span><span class=3D"" style=3D"font-size:24pt; font-family:=
Calibri">DetNet</span><span class=3D"" style=3D"font-size:24pt; font-family=
:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>affect
 message, waiting until message it passed up to higher level application ma=
y affect higher level applications ability to properly and securely assess =
the message</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:36pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:36pt; font=
-family:Calibri">Runtime Monitoring Recommendations</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Runtime mechanisms to</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Detect and disconnect misbehaving components and/or device=
s</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Monitor OAM integrity and<span class=3D"Apple-converted-sp=
ace">&nbsp;</span></span><span class=3D"" style=3D"font-size:24pt; font-fam=
ily:Calibri">DetNet</span><span class=3D"" style=3D"font-size:24pt; font-fa=
mily:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>security
 framework integrity</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Monitor performance - provide alerts and corrective action=
 at appropriate points</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Validate sensitive/critical parameter configurations</span=
></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Validate (and prevent manipulation of) time-sensitive algo=
rithms/values</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Use backup algorithms for this?</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Log operations (which operations require logging?)</span><=
/div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Validate active<span class=3D"Apple-converted-space">&nbsp=
;</span></span><span class=3D"" style=3D"font-size:24pt; font-family:Calibr=
i">DetNet</span><span class=3D"" style=3D"font-size:24pt; font-family:Calib=
ri"><span class=3D"Apple-converted-space">&nbsp;</span>devices=92
 executable code?</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Embed portions of<span class=3D"Apple-converted-space">&nb=
sp;</span></span><span class=3D"" style=3D"font-size:28pt; font-family:Cali=
bri">DetNet</span><span class=3D"" style=3D"font-size:28pt; font-family:Cal=
ibri"><span class=3D"Apple-converted-space">&nbsp;</span>security
 intelligence directly into data</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Packets can contain dynamic data in addition to content ca=
lculated by network infrastructure</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Refer to Author=92s research and IP on this topic, for exa=
mple a cybersecurity framework that places functionality
 and intelligence directly within data packets to provide dynamic and conte=
xtual correlation of information to improve control and precision over pack=
et security, privacy and network flow</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Considerations for DOS attacks - validation/priority mecha=
nisms must account for</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Global device overruns making<span class=3D"Apple-converte=
d-space">&nbsp;</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">DetNet</span><span class=3D"" style=3D"font-size:20pt; fon=
t-family:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>goals
 unobtainable</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Attacker pre-provisioning DDOS conditions</span></div>
<div class=3D"O2" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:1.=
25in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:20pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:20pt; font=
-family:Calibri">Service lost due to malicious timing changes</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:40pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:40pt; font=
-family:Calibri">DetNet</span><span class=3D"" style=3D"font-size:40pt; fon=
t-family:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>Implem=
entation/Development
 Process</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Certification/validation of<span class=3D"Apple-converted-=
space">&nbsp;</span></span><span class=3D"" style=3D"font-size:28pt; font-f=
amily:Calibri">DetNet</span><span class=3D"" style=3D"font-size:28pt; font-=
family:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>componen=
ts</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">HW components</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">SW components</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Devices</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">Reviews of<span class=3D"Apple-converted-space">&nbsp;</sp=
an></span><span class=3D"" style=3D"font-size:28pt; font-family:Calibri">De=
tNet</span><span class=3D"" style=3D"font-size:28pt; font-family:Calibri"><=
span class=3D"Apple-converted-space">&nbsp;</span>SW,
 HW designs</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Buffers</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Important fields</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Duplication/deduplication/path and packet management</span=
></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">OAM management algorithms</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
<span class=3D"" style=3D"font-size:28pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:28pt; font=
-family:Calibri">How much of this is in<span class=3D"Apple-converted-space=
">&nbsp;</span></span><span class=3D"" style=3D"font-size:28pt; font-family=
:Calibri">DetNet</span><span class=3D"" style=3D"font-size:28pt; font-famil=
y:Calibri"><span class=3D"Apple-converted-space">&nbsp;</span>scope?</span>=
</div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">None?</span></div>
<div class=3D"O1" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; =
font-size:16px; font-style:normal; font-weight:normal; letter-spacing:norma=
l; orphans:auto; text-align:start; text-transform:none; white-space:normal;=
 widows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-hei=
ght:14.399999618530273px; margin-top:5pt; margin-bottom:0pt; margin-left:0.=
75in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:no=
rmal">
<span class=3D"" style=3D"font-size:24pt"><span class=3D"" style=3D"font-fa=
mily:Arial">=95</span></span><span class=3D"" style=3D"font-size:24pt; font=
-family:Calibri">Work with<span class=3D"Apple-converted-space">&nbsp;</spa=
n></span><span class=3D"" style=3D"font-size:24pt; font-family:Calibri">AVn=
u
 Alliance</span><span class=3D"" style=3D"font-size:24pt; font-family:Calib=
ri">?</span></div>
<div class=3D"" style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; fo=
nt-size:16px; font-style:normal; font-weight:normal; letter-spacing:normal;=
 orphans:auto; text-align:start; text-transform:none; white-space:normal; w=
idows:auto; word-spacing:0px; background-color:rgb(255,255,255); line-heigh=
t:14.399999618530273px; margin-top:10pt; margin-bottom:0pt; margin-left:0.2=
5in; text-indent:-0.25in; direction:ltr; unicode-bidi:embed; word-break:nor=
mal">
------------------------------------------------------------------------<br=
 class=3D"">
</div>
<div class=3D"" style=3D"margin-top:0px; margin-bottom:0px; font-family:Cal=
ibri,Arial,Helvetica,sans-serif; font-size:16px; font-style:normal; font-we=
ight:normal; letter-spacing:normal; orphans:auto; text-align:start; text-in=
dent:0px; text-transform:none; white-space:normal; widows:auto; word-spacin=
g:0px; background-color:rgb(255,255,255)">
<br class=3D"">
</div>
<div class=3D"" style=3D"font-style:normal; font-weight:normal; letter-spac=
ing:normal; orphans:auto; text-align:start; text-indent:0px; text-transform=
:none; white-space:normal; widows:auto; word-spacing:0px; background-color:=
rgb(255,255,255); word-wrap:break-word; font-size:14px; font-family:Calibri=
,sans-serif">
<hr tabindex=3D"-1" class=3D"" style=3D"display:inline-block; width:945.687=
5px">
<div id=3D"divRplyFwdMsg" dir=3D"ltr" class=3D""><font face=3D"Calibri, san=
s-serif" class=3D"" style=3D"font-size:11pt"><b class=3D"">From:</b><span c=
lass=3D"Apple-converted-space">&nbsp;</span>Maik Seewald (maseewal) &lt;<a =
href=3D"mailto:maseewal@cisco.com" class=3D"">maseewal@cisco.com</a>&gt;<br=
 class=3D"">
<b class=3D"">Sent:</b><span class=3D"Apple-converted-space">&nbsp;</span>T=
uesday, October 11, 2016 4:09 AM<br class=3D"">
<b class=3D"">To:</b><span class=3D"Apple-converted-space">&nbsp;</span>nfi=
nn; Grossman, Ethan A.<br class=3D"">
<b class=3D"">Cc:</b><span class=3D"Apple-converted-space">&nbsp;</span><a =
href=3D"mailto:detnet@ietf.org" class=3D"">detnet@ietf.org</a><br class=3D"=
">
<b class=3D"">Subject:</b><span class=3D"Apple-converted-space">&nbsp;</spa=
n>Re: [Detnet] DetNet Security Review</font>
<div class=3D"">&nbsp;</div>
</div>
<div class=3D"">
<div class=3D"">In parallel, IEEE 1588 has a sub working group defining sec=
urity (in terms of profiles/prongs) for the 1588 protocol.</div>
<div class=3D"">For time-sensitive networking, security for critical servic=
es (such as time) is essential, especially in WAN use cases=85</div>
<div class=3D"">Regards, Maik&nbsp;</div>
<div class=3D""><br class=3D"">
</div>
<span id=3D"OLK_SRC_BODY_SECTION" class=3D"">
<div class=3D"" style=3D"font-family:Calibri; font-size:11pt; text-align:le=
ft; border-width:1pt medium medium; border-style:solid none none; padding:3=
pt 0in 0in; border-top-color:rgb(181,196,223)">
<span class=3D"" style=3D"font-weight:bold">From:<span class=3D"Apple-conve=
rted-space">&nbsp;</span></span>Norm Finn &lt;<a href=3D"mailto:nfinn@alumn=
i.caltech.edu" class=3D"">nfinn@alumni.caltech.edu</a>&gt;<br class=3D"">
<span class=3D"" style=3D"font-weight:bold">Date:<span class=3D"Apple-conve=
rted-space">&nbsp;</span></span>Dienstag, 11. Oktober 2016 08:05<br class=
=3D"">
<span class=3D"" style=3D"font-weight:bold">To:<span class=3D"Apple-convert=
ed-space">&nbsp;</span></span>&quot;Grossman, Ethan A.&quot; &lt;<a href=3D=
"mailto:eagros@dolby.com" class=3D"">eagros@dolby.com</a>&gt;<br class=3D""=
>
<span class=3D"" style=3D"font-weight:bold">Cc:<span class=3D"Apple-convert=
ed-space">&nbsp;</span></span>&quot;<a href=3D"mailto:detnet@ietf.org" clas=
s=3D"">detnet@ietf.org</a>&quot; &lt;<a href=3D"mailto:detnet@ietf.org" cla=
ss=3D"">detnet@ietf.org</a>&gt;<br class=3D"">
<span class=3D"" style=3D"font-weight:bold">Subject:<span class=3D"Apple-co=
nverted-space">&nbsp;</span></span>Re: [Detnet] DetNet Security Review<br c=
lass=3D"">
</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">
<div class=3D"" style=3D"word-wrap:break-word">You are a regular fountain o=
f good questions lately, Ethan!
<div class=3D""><br class=3D"">
</div>
<div class=3D"">There are people in NTP/TICTOC looking at time security.</d=
iv>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">Not much else that I know about.</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">=97 Norm</div>
<div class=3D""><br class=3D"">
<div class=3D"">
<div class=3D"">
<blockquote type=3D"cite" class=3D"">
<div class=3D"">On Oct 7, 2016, at 1:13 PM, Grossman, Ethan A. &lt;<a href=
=3D"mailto:eagros@dolby.com" class=3D"">eagros@dolby.com</a>&gt; wrote:</di=
v>
<br class=3D"Apple-interchange-newline">
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ows:auto; word-spacing:0px"><span class=3D"" style=3D"font-size:11pt">
<div class=3D"">Hi Folks,</div>
<div class=3D"">Security is of paramount importance for most if not all of =
the networks described in the DetNet use cases. I gather that DetNet itself=
 doesn=92t have a lot of explicit security aspects, however since security =
in such networks needs to be considered
 from the start as opposed to later, do we have someone among us who is our=
 =93security guru=94 who is keeping an eye on our development to make sure =
we don=92t miss a trick anywhere? One way or another, I would like to be co=
nfident that we have this totally covered.</div>
<div class=3D"">Thanks,</div>
<div class=3D"">Ethan.</div>
<div class=3D"">&nbsp;</div>
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From: "Grossman, Ethan A." <eagros@dolby.com>
To: nfinn <nfinn@alumni.caltech.edu>
Thread-Topic: [Detnet] DetNet Use Case Statements - Latency matching
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Subject: Re: [Detnet] DetNet Use Case Statements - Latency matching
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So there "could" be a way for an app to "demand" a given min/max latency of=
 the network (in addition to being able to query the network for min/max va=
lues), in which case the network *would* be able to provide symmetrical lat=
encies without extra buffering on the part of the app, but it sounds like i=
t is still under discussion in Architecture. So I conclude we don't have a =
consensus on this topic yet, still working on it.


Ethan.


________________________________
From: nfinn <nfinn@alumni.caltech.edu>
Sent: Monday, October 31, 2016 11:57 PM
To: Grossman, Ethan A.
Cc: Gordon Bechtel; Olivier Marce; detnet@ietf.org
Subject: Re: [Detnet] DetNet Use Case Statements - Latency matching

I think we=92re still talking about symmetrical latencies.

There are still multiple possibilities.  IF we assume that the network can =
provide both minimum and maximum latency guarantees, then I would ask the n=
etwork what it=92s max latency is in both directions, then pick max/min val=
ues to demand of the network that are not much larger than the slowest max =
latency of the two directions.  If the network has sufficient buffering, th=
e network will do the work of matching the latencies.

If the network doesn=92t have the buffering, then yes, the app has to do th=
e buffering.

=97 Norm

On Oct 31, 2016, at 5:03 PM, Grossman, Ethan A. <eagros@dolby.com<mailto:ea=
gros@dolby.com>> wrote:

Hi Gordy, Norm, Olivier, WG,
I understand the consensus is:
1)      The network must be able to report its capabilities for latency (pr=
esumably both min and max, thus bounding jitter).
2)      The application must add its own delays to a =93faster=94 path to m=
atch a =93slower=94 path if it needs to.

If anyone has any other understanding or input, please reply.
Thanks,
Ethan.

From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Gordon Bechtel
Sent: Thursday, October 06, 2016 8:56 AM
To: Olivier Marce
Cc: detnet@ietf.org<mailto:detnet@ietf.org>
Subject: Re: [Detnet] DetNet Use Case Statements - Latency matching

Seems to me that the question of latency metrics can be resolved in the sam=
e way Norm suggested for timing and bandwidth: Let the network report on wh=
at it is capable of (with whatever metrics this group feels makes sense) an=
d let the application decide how best to use (or not use) the network.

In the particular case of matched latencies, the network should report the =
latency metrics for each direction of the flow, and the application can dec=
ide if this is sufficient.  Some applications need symmetric latencies (it =
sounds like the utility applications do) and some don't.  But the network d=
oesn't know that.  Only the application does.

Gordy

On Thu, Oct 6, 2016 at 4:16 AM, Olivier Marce <Olivier.Marce@nokia.com<mail=
to:Olivier.Marce@nokia.com>> wrote:
Hi,
I have the feeling that expressing min latency in addition to max latency i=
s a loose way to express jitter control.
There is a tradeoff between latency/jitter constraints and protection/paths=
 redundancies: one could not expect having the same latency and jitter for =
one single path, than for multiple concurrent paths.
As such jitter should be dependent of level of protections i.e. more paths,=
 higher acceptable jitter.

I do not see (yet) any reason for having similar latency on send and return=
 paths.

Regards

Le 06/10/2016 =E0 03:43, nfinn a =E9crit :
The architecture draft still mentions both minimum and maximum latency
as specifiable.  In some sense, that solves the problem.  The issue, of
course, is picking the minimum and maximum numbers.  Perhaps there is
some way to provide clues to the app so it can pick suitable numbers.

Bit, as I think about it, bi-directional latency equality is not at all
trivial to maintain.  The existing TSN standards report latency, instead
of satisfying a requirement for latency.  The imagined use (by me,
anyway) of a max latency parameter is to allow the network to change
topology, or reroute a stream, or add higher-priority flows, and still
guarantee the max latency is met.  If, by bidirectional latency
matching, you mean, =93make both slow if one is slow, and vice-versa,=94 I
don=92t know how to do that.  If you mean =93meet min and max latency
specifications for the flow=94, then were on the right track, already.

=97 Norm
On Oct 5, 2016, at 4:25 PM, Grossman, Ethan A. <eagros@dolby.com<mailto:eag=
ros@dolby.com>
<mailto:eagros@dolby.com<mailto:eagros@dolby.com>>> wrote:

Statement:
Latency matching =96 single- or bi-directional. The Utilities use case
needs this, but is this something we need to address in DetNet?

Discussion (oldest first):

Ethan Grossman wrote:
This came up because at least one use case mentioned a need for
multiple outgoing paths (or the send and return paths) to have matched
latencies. I suppose one way to do this is to specify a latency which
is the minimum, and the add delay to the other path(s) to match it =96
but does this happen at the DetNet level or is it something the
application layer would do?

Pascal Thubert wrote:
This seems related to the in-order packets delivery item. A tight
latency control can be useful to maintain that order. But doesn=92t this
imply Time triggered operations?
We could also add that feature of voluntary latency addition, probably
associated to jitter elimination.
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--
Olivier Marc=E9
Nokia Bell Labs France
"we need to guard against increased levels of reporting and other
requirements that distract you from doing what you really need to be doing.=
" Rajeev Suri, Nokia CEO, April 2016


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<p>So there &quot;could&quot; be&nbsp;a way for an app to &quot;demand&quot=
; a&nbsp;given min/max latency&nbsp;of&nbsp;the network (in addition to bei=
ng able to query the network for min/max values), in which case&nbsp;the ne=
twork *would*&nbsp;be able to provide symmetrical latencies without extra b=
uffering
 on the part of the app,&nbsp;but it sounds like it is still under&nbsp;dis=
cussion in&nbsp;Architecture. So I conclude we don't have a consensus on th=
is topic yet, still working on it.</p>
<p><br>
</p>
<p>Ethan.&nbsp;<br>
</p>
<p><br>
</p>
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<div style=3D"word-wrap:break-word">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" co=
lor=3D"#000000" style=3D"font-size:11pt"><b>From:</b> nfinn &lt;nfinn@alumn=
i.caltech.edu&gt;<br>
<b>Sent:</b> Monday, October 31, 2016 11:57 PM<br>
<b>To:</b> Grossman, Ethan A.<br>
<b>Cc:</b> Gordon Bechtel; Olivier Marce; detnet@ietf.org<br>
<b>Subject:</b> Re: [Detnet] DetNet Use Case Statements - Latency matching<=
/font>
<div>&nbsp;</div>
</div>
<div>I think we=92re still talking about symmetrical latencies.
<div class=3D""><br class=3D"">
</div>
<div class=3D"">There are still multiple possibilities. &nbsp;IF we assume =
that the network can provide both minimum and maximum latency guarantees, t=
hen I would ask the network what it=92s max latency is in both directions, =
then pick max/min values to demand of the
 network that are not much larger than the slowest max latency of the two d=
irections. &nbsp;If the network has sufficient buffering, the network will =
do the work of matching the latencies.</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">If the network doesn=92t have the buffering, then yes, the =
app has to do the buffering.<br class=3D"">
<div class=3D""><br class=3D"">
</div>
<div class=3D"">=97 Norm</div>
<div class=3D""><br class=3D"">
<div>
<blockquote type=3D"cite" class=3D"">
<div class=3D"">On Oct 31, 2016, at 5:03 PM, Grossman, Ethan A. &lt;<a href=
=3D"mailto:eagros@dolby.com" class=3D"">eagros@dolby.com</a>&gt; wrote:</di=
v>
<br class=3D"Apple-interchange-newline">
<div class=3D"">
<div class=3D"WordSection1" style=3D"font-family:Helvetica; font-size:12px;=
 font-style:normal; font-weight:normal; letter-spacing:normal; orphans:auto=
; text-align:start; text-indent:0px; text-transform:none; white-space:norma=
l; widows:auto; word-spacing:0px">
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
<span class=3D"" style=3D"font-size:11pt; font-family:Calibri,sans-serif; c=
olor:rgb(31,73,125)">Hi Gordy, Norm, Olivier, WG,</span></div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
<span class=3D"" style=3D"font-size:11pt; font-family:Calibri,sans-serif; c=
olor:rgb(31,73,125)">I understand the consensus is:</span></div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt 0.5in; font-size:12pt; fon=
t-family:'Times New Roman',serif; text-indent:-0.25in">
<span class=3D"" style=3D"font-size:11pt; font-family:Calibri,sans-serif; c=
olor:rgb(31,73,125)"><span class=3D"">1)<span class=3D"" style=3D"font-styl=
e:normal; font-weight:normal; font-size:7pt; line-height:normal; font-famil=
y:'Times New Roman'">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=3D"Apple-con=
verted-space">&nbsp;</span></span></span></span><span class=3D"" style=3D"f=
ont-size:11pt; font-family:Calibri,sans-serif; color:rgb(31,73,125)">The
 network must be able to report its capabilities for latency (presumably bo=
th min and max, thus bounding jitter).</span></div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt 0.5in; font-size:12pt; fon=
t-family:'Times New Roman',serif; text-indent:-0.25in">
<span class=3D"" style=3D"font-size:11pt; font-family:Calibri,sans-serif; c=
olor:rgb(31,73,125)"><span class=3D"">2)<span class=3D"" style=3D"font-styl=
e:normal; font-weight:normal; font-size:7pt; line-height:normal; font-famil=
y:'Times New Roman'">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=3D"Apple-con=
verted-space">&nbsp;</span></span></span></span><span class=3D"" style=3D"f=
ont-size:11pt; font-family:Calibri,sans-serif; color:rgb(31,73,125)">The
 application must add its own delays to a =93faster=94 path to match a =93s=
lower=94 path if it needs to.</span></div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
<span class=3D"" style=3D"font-size:11pt; font-family:Calibri,sans-serif; c=
olor:rgb(31,73,125)">&nbsp;</span></div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:11pt; font-fami=
ly:Calibri,sans-serif">
<span class=3D"" style=3D"color:rgb(31,73,125)">If anyone has any other und=
erstanding or input, please reply.</span></div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:11pt; font-fami=
ly:Calibri,sans-serif">
<span class=3D"" style=3D"color:rgb(31,73,125)">Thanks,</span></div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:11pt; font-fami=
ly:Calibri,sans-serif">
<span class=3D"" style=3D"color:rgb(31,73,125)">Ethan.</span></div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
<span class=3D"" style=3D"font-size:11pt; font-family:Calibri,sans-serif; c=
olor:rgb(31,73,125)"></span></div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
<span class=3D"" style=3D"font-size:11pt; font-family:Calibri,sans-serif; c=
olor:rgb(31,73,125)">&nbsp;</span></div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
<b class=3D""><span class=3D"" style=3D"font-size:10pt; font-family:Tahoma,=
sans-serif">From:</span></b><span class=3D"" style=3D"font-size:10pt; font-=
family:Tahoma,sans-serif"><span class=3D"Apple-converted-space">&nbsp;</spa=
n>detnet [<a href=3D"mailto:detnet-bounces@ietf.org" class=3D"" style=3D"co=
lor:purple; text-decoration:underline">mailto:detnet-bounces@ietf.org</a>]<=
span class=3D"Apple-converted-space">&nbsp;</span><b class=3D"">On
 Behalf Of<span class=3D"Apple-converted-space">&nbsp;</span></b>Gordon Bec=
htel<br class=3D"">
<b class=3D"">Sent:</b><span class=3D"Apple-converted-space">&nbsp;</span>T=
hursday, October 06, 2016 8:56 AM<br class=3D"">
<b class=3D"">To:</b><span class=3D"Apple-converted-space">&nbsp;</span>Oli=
vier Marce<br class=3D"">
<b class=3D"">Cc:</b><span class=3D"Apple-converted-space">&nbsp;</span><a =
href=3D"mailto:detnet@ietf.org" class=3D"" style=3D"color:purple; text-deco=
ration:underline">detnet@ietf.org</a><br class=3D"">
<b class=3D"">Subject:</b><span class=3D"Apple-converted-space">&nbsp;</spa=
n>Re: [Detnet] DetNet Use Case Statements - Latency matching</span></div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
&nbsp;</div>
<div class=3D"">
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
Seems to me that the question of latency metrics can be resolved in the sam=
e way Norm suggested for timing and bandwidth: Let the network<span class=
=3D"Apple-converted-space">&nbsp;</span><i class=3D""><u class=3D"">report<=
/u></i><span class=3D"Apple-converted-space">&nbsp;</span>on
 what it is capable of (with whatever metrics this group feels makes sense)=
 and let the application<span class=3D"Apple-converted-space">&nbsp;</span>=
<i class=3D""><u class=3D"">decide</u></i><span class=3D"Apple-converted-sp=
ace">&nbsp;</span>how best to use (or not use) the
 network.</div>
<div class=3D"">
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
&nbsp;</div>
</div>
<div class=3D"">
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
In the particular case of matched latencies, the network should report the =
latency metrics for each direction of the flow, and the application can dec=
ide if this is sufficient.&nbsp; Some applications need symmetric latencies=
 (it sounds like the utility applications
 do) and some don't.&nbsp; But the network doesn't know that.&nbsp; Only th=
e application does.</div>
</div>
<div class=3D"">
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
&nbsp;</div>
</div>
<div class=3D"">
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
Gordy</div>
</div>
</div>
<div class=3D"">
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
&nbsp;</div>
<div class=3D"">
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
On Thu, Oct 6, 2016 at 4:16 AM, Olivier Marce &lt;<a href=3D"mailto:Olivier=
.Marce@nokia.com" target=3D"_blank" class=3D"" style=3D"color:purple; text-=
decoration:underline">Olivier.Marce@nokia.com</a>&gt; wrote:</div>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
Hi,<br class=3D"">
I have the feeling that expressing min latency in addition to max latency i=
s a loose way to express jitter control.<br class=3D"">
There is a tradeoff between latency/jitter constraints and protection/paths=
 redundancies: one could not expect having the same latency and jitter for =
one single path, than for multiple concurrent paths.<br class=3D"">
As such jitter should be dependent of level of protections i.e. more paths,=
 higher acceptable jitter.<br class=3D"">
<br class=3D"">
I do not see (yet) any reason for having similar latency on send and return=
 paths.<br class=3D"">
<br class=3D"">
Regards<br class=3D"">
<br class=3D"">
Le 06/10/2016 =E0 03:43, nfinn a =E9crit :</div>
<p class=3D"MsoNormal" style=3D"margin:0in 0in 12pt; font-size:12pt; font-f=
amily:'Times New Roman',serif">
The architecture draft still mentions both minimum and maximum latency<br c=
lass=3D"">
as specifiable.&nbsp; In some sense, that solves the problem.&nbsp; The iss=
ue, of<br class=3D"">
course, is picking the minimum and maximum numbers.&nbsp; Perhaps there is<=
br class=3D"">
some way to provide clues to the app so it can pick suitable numbers.<br cl=
ass=3D"">
<br class=3D"">
Bit, as I think about it, bi-directional latency equality is not at all<br =
class=3D"">
trivial to maintain.&nbsp; The existing TSN standards report latency, inste=
ad<br class=3D"">
of satisfying a requirement for latency.&nbsp; The imagined use (by me,<br =
class=3D"">
anyway) of a max latency parameter is to allow the network to change<br cla=
ss=3D"">
topology, or reroute a stream, or add higher-priority flows, and still<br c=
lass=3D"">
guarantee the max latency is met.&nbsp; If, by bidirectional latency<br cla=
ss=3D"">
matching, you mean, =93make both slow if one is slow, and vice-versa,=94 I<=
br class=3D"">
don=92t know how to do that.&nbsp; If you mean =93meet min and max latency<=
br class=3D"">
specifications for the flow=94, then were on the right track, already.<br c=
lass=3D"">
<br class=3D"">
=97 Norm</p>
<div class=3D"" style=3D"margin:0in 0in 0.0001pt; font-size:12pt; font-fami=
ly:'Times New Roman',serif">
On Oct 5, 2016, at 4:25 PM, Grossman, Ethan A. &lt;<a href=3D"mailto:eagros=
@dolby.com" target=3D"_blank" class=3D"" style=3D"color:purple; text-decora=
tion:underline">eagros@dolby.com</a><br class=3D"">
&lt;mailto:<a href=3D"mailto:eagros@dolby.com" target=3D"_blank" class=3D""=
 style=3D"color:purple; text-decoration:underline">eagros@dolby.com</a>&gt;=
&gt; wrote:<br class=3D"">
<br class=3D"">
Statement:<br class=3D"">
Latency matching =96 single- or bi-directional. The Utilities use case<br c=
lass=3D"">
needs this, but is this something we need to address in DetNet?<br class=3D=
"">
<br class=3D"">
Discussion (oldest first):<br class=3D"">
<br class=3D"">
Ethan Grossman wrote:<br class=3D"">
This came up because at least one use case mentioned a need for<br class=3D=
"">
multiple outgoing paths (or the send and return paths) to have matched<br c=
lass=3D"">
latencies. I suppose one way to do this is to specify a latency which<br cl=
ass=3D"">
is the minimum, and the add delay to the other path(s) to match it =96<br c=
lass=3D"">
but does this happen at the DetNet level or is it something the<br class=3D=
"">
application layer would do?<br class=3D"">
<br class=3D"">
Pascal Thubert wrote:<br class=3D"">
This seems related to the in-order packets delivery item. A tight<br class=
=3D"">
latency control can be useful to maintain that order. But doesn=92t this<br=
 class=3D"">
imply Time triggered operations?<br class=3D"">
We could also add that feature of voluntary latency addition, probably<br c=
lass=3D"">
associated to jitter elimination.<br class=3D"">
---------------------------------------------------------<br class=3D"">
<br class=3D"">
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<span class=3D"" style=3D"color:rgb(136,136,136)"><br class=3D"">
<span class=3D"hoenzb">--<span class=3D"Apple-converted-space">&nbsp;</span=
></span><br class=3D"">
<span class=3D"hoenzb">Olivier Marc=E9</span><br class=3D"">
<span class=3D"hoenzb">Nokia Bell Labs France</span><br class=3D"">
<span class=3D"hoenzb">&quot;we need to guard against increased levels of r=
eporting and other</span><br class=3D"">
<span class=3D"hoenzb">requirements that distract you from doing what you r=
eally need to be doing.&quot; Rajeev Suri, Nokia CEO, April 2016</span></sp=
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From: "Grossman, Ethan A." <eagros@dolby.com>
To: "detnet@ietf.org" <detnet@ietf.org>
Thread-Topic: DetNet Use Case Statements - How to express app reliability needs?
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Date: Mon, 7 Nov 2016 23:24:28 +0000
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Subject: [Detnet] DetNet Use Case Statements - How to express app reliability needs?
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In starting this thread I inadvertently included two topics - 1) expressing=
 timing accuracy, and 2) expressing reliability, so I am spinning out the l=
atter into this new thread.  =0A=
=0A=
My question here is "Is the reliability (e.g. number of 9's) a fixed proper=
ty of the given DetNet, or is it something that can be configured on a per-=
flow basis via an API?"  =0A=
For example a DetNet might provide one redundant path, or two redundant pat=
hs, resulting in two distinct levels of reliability, and that could be be "=
for all flows" or on a "per-flow" basis. =0A=
I would assume that the app should be able to query the network for the rel=
iability figure (or range, or options), then based on that, specify the cho=
ice to the network for a given flow? =0A=
Is there an existing API for that? =0A=
=0A=
Thanks,=0A=
Ethan.=0A=
=0A=
________________________________________=0A=
From: nfinn <nfinn@alumni.caltech.edu>=0A=
Sent: Thursday, November 3, 2016 10:43 AM=0A=
To: Patrick Wetterwald (pwetterw)=0A=
Cc: Jouni Korhonen; Grossman, Ethan A.; Pascal Thubert; detnet@ietf.org; Ol=
ivier Marce=0A=
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app time =
accuracy and reliability needs?=0A=
=0A=
Agreed!=0A=
=0A=
=97 Norm=0A=
=0A=
> On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) <pwetterw@cisco=
.com> wrote:=0A=
>=0A=
> Hi Norm,=0A=
>=0A=
> I agree that Detnet should not spend too much time on time synchronizatio=
n and time accuracy. I just wanted to express that if we want / need to rep=
ort time accuracy, the application is not the only one interested in such i=
nformation. In case of a PCE based Detnet, the PCE is one of the recipient =
of this information.=0A=
>=0A=
> Some applications may have their own time reference (based on GPS for ins=
tance).  What the application expects from a Detnet network is guarantee of=
 delivery in a maximum latency with a bounded jitter and it differs to the =
PCE to handle all that is needed to ensure it.=0A=
>=0A=
> Does it make sense?=0A=
>=0A=
> Thanks,=0A=
>=0A=
> Patrick=0A=
>=0A=
> On 02/11/2016, 17:58, "nfinn" <nfinn@alumni.caltech.edu> wrote:=0A=
>=0A=
>    Patrick,=0A=
>=0A=
>    If you want to work on this approach, I don=92t want to stop you.  But=
, it looks to me that it increases the number of options (and thus, everyon=
e=92s work load) with no benefit gained.=0A=
>=0A=
>    If the application has time requirements, I assume that it is able to =
synchronize its clock using one or more specific protocols, and therefore k=
nows how to interpret each of those protocols=92 accuracy information.  Pro=
blem solved.  Teaching the application to ask the PCE 1) requires that a PC=
E b e present, and 2) requires the application to implement a query/respons=
e of some kind to express its requirements and understand the answer.  Keep=
 in mind that the answer is not always =93yes/no=94.  Perhaps the applicati=
on can operate in different modes, depending on clock accuracy.=0A=
>=0A=
>    Of course, if you or any expert in the time protocols tell us that onl=
y a centralized controller can make the determination for a significant cla=
ss of use cases, I=92m ready to change my mind.=0A=
>=0A=
>    =97 Norm=0A=
>=0A=
>> On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) <pwetterw@cisc=
o.com> wrote:=0A=
>>=0A=
>> I=92m just wondering if this has to be reported to the application or to=
 the PCE in case of central computing?=0A=
>>=0A=
>> Application asks for the accuracy then the PCE answers if this is possib=
le or not.=0A=
>>=0A=
>> We may have both cases.=0A=
>>=0A=
>> Thanks,=0A=
>>=0A=
>> Patrick=0A=
>>=0A=
>> On 02/11/2016, 16:43, "detnet on behalf of Jouni Korhonen" <detnet-bounc=
es@ietf.org on behalf of jouni.korhonen@broadcom.com> wrote:=0A=
>>=0A=
>>   looks good to me.=0A=
>>=0A=
>>   - jouni=0A=
>>=0A=
>>> On Oct 31, 2016, at 11:59 PM, nfinn <nfinn@alumni.caltech.edu> wrote:=
=0A=
>>>=0A=
>>> I think that=92s a very good summary of my preferred approach.  Is it s=
atisfactory for you?=0A=
>>>=0A=
>>> =97 Norm=0A=
>>>=0A=
>>>> On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. <eagros@dolby.com> wro=
te:=0A=
>>>>=0A=
>>>> Hi Pascal, Olivier, Norm, WG,=0A=
>>>> So the consensus is, to paraphrase Norm:=0A=
>>>>=0A=
>>>> 1) Make sure that the time protocols are able to report, along with th=
e time, the accuracy provided.=0A=
>>>> 2) The application will decide whether that is sufficient.=0A=
>>>> 3) The accuracy reported will likely consist of several parameters (fr=
equency accuracy, absolute accuracy, etc.).=0A=
>>>> 4) Different time protocols may have different parameters for accuracy=
.=0A=
>>>> 5) An application might care about one or more of those parameters.=0A=
>>>> 6) An application might then operate in one of various modes, dependin=
g on the accuracy provided.=0A=
>>>>=0A=
>>>> If anyone has any other understanding or input, please reply.=0A=
>>>> Thanks,=0A=
>>>> Ethan.=0A=
>>>>=0A=
>>>> -----Original Message-----=0A=
>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Pascal Thub=
ert (pthubert)=0A=
>>>> Sent: Tuesday, October 11, 2016 4:29 AM=0A=
>>>> To: Olivier Marce; detnet@ietf.org=0A=
>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
time accuracy and reliability needs?=0A=
>>>>=0A=
>>>> This is my understanding too, Olivier.=0A=
>>>>=0A=
>>>> Also, time-related work is done elsewhere, whether one thinks of IETF =
or outside the IETF. We do not want to be taken in the middle of that storm=
.=0A=
>>>> Best can do is probably state requirements, but for all I know we are =
using time as an information provided by external means, as opposed to mana=
ging it.=0A=
>>>>=0A=
>>>> Cheers,=0A=
>>>>=0A=
>>>> Pascal=0A=
>>>>=0A=
>>>> -----Original Message-----=0A=
>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Olivier Mar=
ce=0A=
>>>> Sent: jeudi 6 octobre 2016 12:05=0A=
>>>> To: detnet@ietf.org=0A=
>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
time accuracy and reliability needs?=0A=
>>>>=0A=
>>>> Hi,=0A=
>>>> I'm in favor of Norm' position: DetNet should concentrate on  reliable=
, on-time delivery of packets. Time accuracy is required for DetNet but out=
 of scope, as many solutions exist and is not only a networking topic.=0A=
>>>> At most, DetNet could provide some reference examples on how providing=
 required time accuracy.=0A=
>>>>=0A=
>>>>=0A=
>>>> Regards=0A=
>>>>=0A=
>>>> Le 06/10/2016 =E0 03:30, nfinn a =E9crit :=0A=
>>>>> Interesting question.=0A=
>>>>>=0A=
>>>>> It seems more useful to me to make sure that the time protocols are=
=0A=
>>>>> able to report, along with the time, the accuracy provided.  The=0A=
>>>>> application can then decide whether that is sufficient.  The accuracy=
=0A=
>>>>> reported will likely consist of several parameters (frequency=0A=
>>>>> accuracy, absolute accuracy, etc.).  Different time protocols may hav=
e=0A=
>>>>> different parameters for accuracy.  The application might worried=0A=
>>>>> about one or the other of those parameters.  It might operate in=0A=
>>>>> different modes, depending on the accuracy provided.  I don't see the=
=0A=
>>>>> value in moving the decision point anywhere else.=0A=
>>>>>=0A=
>>>>> With DetNet, one can imagine a bandwidth reservation crossing a=0A=
>>>>> boundary between two different master clock domains.  My inclination=
=0A=
>>>>> would be to disallow that, at least for now.  Given an application=0A=
>>>>> that runs for long enough, any frequency difference between source an=
d=0A=
>>>>> sink will eventually cause starvation or overflow.=0A=
>>>>>=0A=
>>>>> All that said, let's suppose that you have a solid use case that is=
=0A=
>>>>> expected to *try* to run across clock domain boundaries, and we want=
=0A=
>>>>> to prevent that when it won't work.  This could be solved by an=0A=
>>>>> application-level protocol that exchanges clock domain information.=
=0A=
>>>>> This could be solved by configuring the network controller to=0A=
>>>>> disallow domain crossings.  This could be handled by parameters in th=
e=0A=
>>>>> reservation protocol, as you suggest, so that the controller can allo=
w=0A=
>>>>> some reservations but not others.  I'll leave it to timing experts to=
=0A=
>>>>> pick some number of appropriate parameters.=0A=
>>>>>=0A=
>>>>> One last consideration - Are you sure that all applications that have=
=0A=
>>>>> these timing requirements also require bandwidth reservations?  I'm=
=0A=
>>>>> not sure of that.  And, if not, a protocol separate from the bandwidt=
h=0A=
>>>>> reservation might be indicated.=0A=
>>>>>=0A=
>>>>> - Norm=0A=
>>>>>=0A=
>>>>>> On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A. <eagros@dolby.com=0A=
>>>>>> <mailto:eagros@dolby.com>> wrote:=0A=
>>>>>>=0A=
>>>>>> Hi Folks,=0A=
>>>>>>=0A=
>>>>>> As of our IETF 96 meeting there were still a couple of Use Case=0A=
>>>>>> Statements that I would like clarity on. Here's the first, remaining=
=0A=
>>>>>> to follow in separate emails.=0A=
>>>>>>=0A=
>>>>>> Question:=0A=
>>>>>> How will an application express its time accuracy and reliability=0A=
>>>>>> needs? Is that within scope of DetNet?=0A=
>>>>>>=0A=
>>>>>> Discussion:=0A=
>>>>>> In AVB/TSN when an application (talker) attempts to make a stream=0A=
>>>>>> reservation it must state how much bandwidth that stream reservation=
=0A=
>>>>>> requires. Presumably in a LAN this is sufficient since a LAN=0A=
>>>>>> presumably has consistent time accuracy and reliability metrics.=0A=
>>>>>>=0A=
>>>>>> For DetNet, in which we support interconnected DetNet networks and=
=0A=
>>>>>> have widely varying requirements for timing accuracy and reliability=
=0A=
>>>>>> depending on the use case, it appears to me that we need to allow an=
=0A=
>>>>>> application to provide this kind of information to the network, and =
a=0A=
>>>>>> way for the network to either agree or decline to provide the=0A=
>>>>>> requested service (analogous to AVB/TSN accepting or declining a=0A=
>>>>>> stream reservation based on the bandwidth requested).=0A=
>>>>>>=0A=
>>>>>> We have had some discussion about this (see below) but nothing near=
=0A=
>>>>>> consensus. Other thoughts from anyone?=0A=
>>>>>> Ethan.=0A=
>>>>>>=0A=
>>>>>> --------------------------------=0A=
>>>>>> Discussion, oldest item first:=0A=
>>>>>>=0A=
>>>>>> Ethan Grossman wrote:=0A=
>>>>>> Timekeeping - the only explicit DetNet Ask for this is in the use=0A=
>>>>>> cases is in M2M as "Precise time synchronization accuracy (1us)" and=
=0A=
>>>>>> I think the intent (as in other use cases) is that the DetNet Ask is=
=0A=
>>>>>> for a way to specify the required accuracy, not how to achieve that =
accuracy.=0A=
>>>>>>=0A=
>>>>>> Norm Finn wrote:=0A=
>>>>>> Timekeeping is an essential part of many, probably most, of the=0A=
>>>>>> applications that also find DetNet useful.  That having been said, s=
o=0A=
>>>>>> is protection against EMI and electrical power saving. Let's=0A=
>>>>>> concentrate DetNet on reliable, on-time delivery of packets.  I'm no=
t=0A=
>>>>>> even sure that "a way to specify the required accuracy" need be in s=
cope.=0A=
>>>>>>=0A=
>>>>>> Rodney Cummings wrote:=0A=
>>>>>> I rarely disagree with Norm, but on this point I'll have to quibble =
a bit.=0A=
>>>>>> I agree that we don't need DetNet to specify how time sync is=0A=
>>>>>> accomplished. There are plenty of IEEE 1588 techniques (and similar)=
=0A=
>>>>>> for that purpose.=0A=
>>>>>> I also agree that we should concentrate on reliable, on-time deliver=
y=0A=
>>>>>> of packets (i.e. worst-case latency).=0A=
>>>>>> If I don't know how accurate my time sync is, then how do I know whe=
n=0A=
>>>>>> a packet is delivered on time? If I don't know the reliability of my=
=0A=
>>>>>> time sync, how can I reliably measure that packet delivery?=0A=
>>>>>> Almost all (if not 100%) of DetNet use cases require time sync at th=
e=0A=
>>>>>> end systems to some degree of accuracy. I agree that we don't need t=
o=0A=
>>>>>> address the implementation of that time sync, but the application=0A=
>>>>>> requirements are needed for time sync (including reliability) just a=
s=0A=
>>>>>> much as for packet delivery.=0A=
>>>>>> --------------------------------=0A=
>>>>>>=0A=
>>>>>> _______________________________________________=0A=
>>>>>> detnet mailing list=0A=
>>>>>> detnet@ietf.org <mailto:detnet@ietf.org>=0A=
>>>>>> https://www.ietf.org/mailman/listinfo/detnet=0A=
>>>>>=0A=
>>>>>=0A=
>>>>>=0A=
>>>>> _______________________________________________=0A=
>>>>> detnet mailing list=0A=
>>>>> detnet@ietf.org=0A=
>>>>> https://www.ietf.org/mailman/listinfo/detnet=0A=
>>>>>=0A=
>>>>=0A=
>>>> --=0A=
>>>> Olivier Marc=E9=0A=
>>>> Nokia Bell Labs France=0A=
>>>> "we need to guard against increased levels of reporting and other requ=
irements that distract you from doing what you really need to be doing." Ra=
jeev Suri, Nokia CEO, April 2016=0A=
>>>>=0A=
>>>> _______________________________________________=0A=
>>>> detnet mailing list=0A=
>>>> detnet@ietf.org=0A=
>>>> https://www.ietf.org/mailman/listinfo/detnet=0A=
>>>>=0A=
>>>> _______________________________________________=0A=
>>>> detnet mailing list=0A=
>>>> detnet@ietf.org=0A=
>>>> https://www.ietf.org/mailman/listinfo/detnet=0A=
>>>>=0A=
>>>> _______________________________________________=0A=
>>>> detnet mailing list=0A=
>>>> detnet@ietf.org=0A=
>>>> https://www.ietf.org/mailman/listinfo/detnet=0A=
>>>=0A=
>>> _______________________________________________=0A=
>>> detnet mailing list=0A=
>>> detnet@ietf.org=0A=
>>> https://www.ietf.org/mailman/listinfo/detnet=0A=
>>=0A=
>>   --=0A=
>>   Jouni Korhonen, Broadcom Ltd.=0A=
>>   M: +1-408-391-7160=0A=
>>=0A=
>>   _______________________________________________=0A=
>>   detnet mailing list=0A=
>>   detnet@ietf.org=0A=
>>   https://www.ietf.org/mailman/listinfo/detnet=0A=
>>=0A=
>>=0A=
>> _______________________________________________=0A=
>> detnet mailing list=0A=
>> detnet@ietf.org=0A=
>> https://www.ietf.org/mailman/listinfo/detnet=0A=
>=0A=
>=0A=
>=0A=
> _______________________________________________=0A=
> detnet mailing list=0A=
> detnet@ietf.org=0A=
> https://www.ietf.org/mailman/listinfo/detnet=0A=
=0A=


From nobody Mon Nov  7 22:19:59 2016
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From: Yu KANEKO <yu1.kaneko@toshiba.co.jp>
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References: <8620772c4ff1410ca6281384696a791b@DLB-XCHPW03.dolby.net> <89124517-CB41-4AAD-A6D9-96DBB57324E3@alumni.caltech.edu> <bc8006a4-fb11-121a-f52b-9d10d34ab014@nokia.com> <2c9cfd1f09b84ad4808871c9bcaf540b@XCH-RCD-001.cisco.com> <6211952161fe433a93219e8fe14f88bb@DLB-XCHPW03.dolby.net> <0CDAEFE4-1125-4C93-B9AB-F090596EE66B@alumni.caltech.edu> <7B1048C5-59A2-4D77-85B2-C227C501CDE5@broadcom.com> <A8BCFBA6-D14A-4369-824F-2F7161BE7A6E@cisco.com> <1F959F1F-6A43-407B-A2FD-A67B62765DA4@alumni.caltech.edu> <2B1716FF-FF2E-4E22-B225-CB79E4D526CA@cisco.com> <07BA6841-0966-43B6-8BF0-ED6FF381E351@alumni.caltech.edu> <1478561084380.65222@dolby.com>
To: "Grossman, Ethan A." <eagros@dolby.com>
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Cc: Yu KANEKO <yu1.kaneko@toshiba.co.jp>, "detnet@ietf.org" <detnet@ietf.org>
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app reliability needs?
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Hi Ethan, Folks,

IMO, reliability is a property for "per-flow". I think most of =
industrial automation systems (e.g. building automation) require the =
same reliability for each redundant path, but considering reliability as =
a per-flow property is more flexible approach.

I assume that application has a reliability requirement (e.g., 99.999%) =
and the app or a controller translate it to data plane parameters =
(buffer allocation size, packet transfer schedule, etc.), and configures =
DetNet nodes.

Regards,
Kaneko

> 2016/11/08 8:24=E3=80=81Grossman, Ethan A. <eagros@dolby.com> =
=E3=81=AE=E3=83=A1=E3=83=BC=E3=83=AB=EF=BC=9A
>=20
> In starting this thread I inadvertently included two topics - 1) =
expressing timing accuracy, and 2) expressing reliability, so I am =
spinning out the latter into this new thread. =20
>=20
> My question here is "Is the reliability (e.g. number of 9's) a fixed =
property of the given DetNet, or is it something that can be configured =
on a per-flow basis via an API?" =20
> For example a DetNet might provide one redundant path, or two =
redundant paths, resulting in two distinct levels of reliability, and =
that could be be "for all flows" or on a "per-flow" basis.=20
> I would assume that the app should be able to query the network for =
the reliability figure (or range, or options), then based on that, =
specify the choice to the network for a given flow?=20
> Is there an existing API for that?=20
>=20
> Thanks,
> Ethan.
>=20
> ________________________________________
> From: nfinn <nfinn@alumni.caltech.edu>
> Sent: Thursday, November 3, 2016 10:43 AM
> To: Patrick Wetterwald (pwetterw)
> Cc: Jouni Korhonen; Grossman, Ethan A.; Pascal Thubert; =
detnet@ietf.org; Olivier Marce
> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
time accuracy and reliability needs?
>=20
> Agreed!
>=20
> =E2=80=94 Norm
>=20
>> On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) =
<pwetterw@cisco.com> wrote:
>>=20
>> Hi Norm,
>>=20
>> I agree that Detnet should not spend too much time on time =
synchronization and time accuracy. I just wanted to express that if we =
want / need to report time accuracy, the application is not the only one =
interested in such information. In case of a PCE based Detnet, the PCE =
is one of the recipient of this information.
>>=20
>> Some applications may have their own time reference (based on GPS for =
instance).  What the application expects from a Detnet network is =
guarantee of delivery in a maximum latency with a bounded jitter and it =
differs to the PCE to handle all that is needed to ensure it.
>>=20
>> Does it make sense?
>>=20
>> Thanks,
>>=20
>> Patrick
>>=20
>> On 02/11/2016, 17:58, "nfinn" <nfinn@alumni.caltech.edu> wrote:
>>=20
>>   Patrick,
>>=20
>>   If you want to work on this approach, I don=E2=80=99t want to stop =
you.  But, it looks to me that it increases the number of options (and =
thus, everyone=E2=80=99s work load) with no benefit gained.
>>=20
>>   If the application has time requirements, I assume that it is able =
to synchronize its clock using one or more specific protocols, and =
therefore knows how to interpret each of those protocols=E2=80=99 =
accuracy information.  Problem solved.  Teaching the application to ask =
the PCE 1) requires that a PCE b e present, and 2) requires the =
application to implement a query/response of some kind to express its =
requirements and understand the answer.  Keep in mind that the answer is =
not always =E2=80=9Cyes/no=E2=80=9D.  Perhaps the application can =
operate in different modes, depending on clock accuracy.
>>=20
>>   Of course, if you or any expert in the time protocols tell us that =
only a centralized controller can make the determination for a =
significant class of use cases, I=E2=80=99m ready to change my mind.
>>=20
>>   =E2=80=94 Norm
>>=20
>>> On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) =
<pwetterw@cisco.com> wrote:
>>>=20
>>> I=E2=80=99m just wondering if this has to be reported to the =
application or to the PCE in case of central computing?
>>>=20
>>> Application asks for the accuracy then the PCE answers if this is =
possible or not.
>>>=20
>>> We may have both cases.
>>>=20
>>> Thanks,
>>>=20
>>> Patrick
>>>=20
>>> On 02/11/2016, 16:43, "detnet on behalf of Jouni Korhonen" =
<detnet-bounces@ietf.org on behalf of jouni.korhonen@broadcom.com> =
wrote:
>>>=20
>>>  looks good to me.
>>>=20
>>>  - jouni
>>>=20
>>>> On Oct 31, 2016, at 11:59 PM, nfinn <nfinn@alumni.caltech.edu> =
wrote:
>>>>=20
>>>> I think that=E2=80=99s a very good summary of my preferred =
approach.  Is it satisfactory for you?
>>>>=20
>>>> =E2=80=94 Norm
>>>>=20
>>>>> On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. <eagros@dolby.com> =
wrote:
>>>>>=20
>>>>> Hi Pascal, Olivier, Norm, WG,
>>>>> So the consensus is, to paraphrase Norm:
>>>>>=20
>>>>> 1) Make sure that the time protocols are able to report, along =
with the time, the accuracy provided.
>>>>> 2) The application will decide whether that is sufficient.
>>>>> 3) The accuracy reported will likely consist of several parameters =
(frequency accuracy, absolute accuracy, etc.).
>>>>> 4) Different time protocols may have different parameters for =
accuracy.
>>>>> 5) An application might care about one or more of those =
parameters.
>>>>> 6) An application might then operate in one of various modes, =
depending on the accuracy provided.
>>>>>=20
>>>>> If anyone has any other understanding or input, please reply.
>>>>> Thanks,
>>>>> Ethan.
>>>>>=20
>>>>> -----Original Message-----
>>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Pascal =
Thubert (pthubert)
>>>>> Sent: Tuesday, October 11, 2016 4:29 AM
>>>>> To: Olivier Marce; detnet@ietf.org
>>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?
>>>>>=20
>>>>> This is my understanding too, Olivier.
>>>>>=20
>>>>> Also, time-related work is done elsewhere, whether one thinks of =
IETF or outside the IETF. We do not want to be taken in the middle of =
that storm.
>>>>> Best can do is probably state requirements, but for all I know we =
are using time as an information provided by external means, as opposed =
to managing it.
>>>>>=20
>>>>> Cheers,
>>>>>=20
>>>>> Pascal
>>>>>=20
>>>>> -----Original Message-----
>>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Olivier =
Marce
>>>>> Sent: jeudi 6 octobre 2016 12:05
>>>>> To: detnet@ietf.org
>>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?
>>>>>=20
>>>>> Hi,
>>>>> I'm in favor of Norm' position: DetNet should concentrate on  =
reliable, on-time delivery of packets. Time accuracy is required for =
DetNet but out of scope, as many solutions exist and is not only a =
networking topic.
>>>>> At most, DetNet could provide some reference examples on how =
providing required time accuracy.
>>>>>=20
>>>>>=20
>>>>> Regards
>>>>>=20
>>>>> Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :
>>>>>> Interesting question.
>>>>>>=20
>>>>>> It seems more useful to me to make sure that the time protocols =
are
>>>>>> able to report, along with the time, the accuracy provided.  The
>>>>>> application can then decide whether that is sufficient.  The =
accuracy
>>>>>> reported will likely consist of several parameters (frequency
>>>>>> accuracy, absolute accuracy, etc.).  Different time protocols may =
have
>>>>>> different parameters for accuracy.  The application might worried
>>>>>> about one or the other of those parameters.  It might operate in
>>>>>> different modes, depending on the accuracy provided.  I don't see =
the
>>>>>> value in moving the decision point anywhere else.
>>>>>>=20
>>>>>> With DetNet, one can imagine a bandwidth reservation crossing a
>>>>>> boundary between two different master clock domains.  My =
inclination
>>>>>> would be to disallow that, at least for now.  Given an =
application
>>>>>> that runs for long enough, any frequency difference between =
source and
>>>>>> sink will eventually cause starvation or overflow.
>>>>>>=20
>>>>>> All that said, let's suppose that you have a solid use case that =
is
>>>>>> expected to *try* to run across clock domain boundaries, and we =
want
>>>>>> to prevent that when it won't work.  This could be solved by an
>>>>>> application-level protocol that exchanges clock domain =
information.
>>>>>> This could be solved by configuring the network controller to
>>>>>> disallow domain crossings.  This could be handled by parameters =
in the
>>>>>> reservation protocol, as you suggest, so that the controller can =
allow
>>>>>> some reservations but not others.  I'll leave it to timing =
experts to
>>>>>> pick some number of appropriate parameters.
>>>>>>=20
>>>>>> One last consideration - Are you sure that all applications that =
have
>>>>>> these timing requirements also require bandwidth reservations?  =
I'm
>>>>>> not sure of that.  And, if not, a protocol separate from the =
bandwidth
>>>>>> reservation might be indicated.
>>>>>>=20
>>>>>> - Norm
>>>>>>=20
>>>>>>> On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A. <eagros@dolby.com
>>>>>>> <mailto:eagros@dolby.com>> wrote:
>>>>>>>=20
>>>>>>> Hi Folks,
>>>>>>>=20
>>>>>>> As of our IETF 96 meeting there were still a couple of Use Case
>>>>>>> Statements that I would like clarity on. Here's the first, =
remaining
>>>>>>> to follow in separate emails.
>>>>>>>=20
>>>>>>> Question:
>>>>>>> How will an application express its time accuracy and =
reliability
>>>>>>> needs? Is that within scope of DetNet?
>>>>>>>=20
>>>>>>> Discussion:
>>>>>>> In AVB/TSN when an application (talker) attempts to make a =
stream
>>>>>>> reservation it must state how much bandwidth that stream =
reservation
>>>>>>> requires. Presumably in a LAN this is sufficient since a LAN
>>>>>>> presumably has consistent time accuracy and reliability metrics.
>>>>>>>=20
>>>>>>> For DetNet, in which we support interconnected DetNet networks =
and
>>>>>>> have widely varying requirements for timing accuracy and =
reliability
>>>>>>> depending on the use case, it appears to me that we need to =
allow an
>>>>>>> application to provide this kind of information to the network, =
and a
>>>>>>> way for the network to either agree or decline to provide the
>>>>>>> requested service (analogous to AVB/TSN accepting or declining a
>>>>>>> stream reservation based on the bandwidth requested).
>>>>>>>=20
>>>>>>> We have had some discussion about this (see below) but nothing =
near
>>>>>>> consensus. Other thoughts from anyone?
>>>>>>> Ethan.
>>>>>>>=20
>>>>>>> --------------------------------
>>>>>>> Discussion, oldest item first:
>>>>>>>=20
>>>>>>> Ethan Grossman wrote:
>>>>>>> Timekeeping - the only explicit DetNet Ask for this is in the =
use
>>>>>>> cases is in M2M as "Precise time synchronization accuracy (1us)" =
and
>>>>>>> I think the intent (as in other use cases) is that the DetNet =
Ask is
>>>>>>> for a way to specify the required accuracy, not how to achieve =
that accuracy.
>>>>>>>=20
>>>>>>> Norm Finn wrote:
>>>>>>> Timekeeping is an essential part of many, probably most, of the
>>>>>>> applications that also find DetNet useful.  That having been =
said, so
>>>>>>> is protection against EMI and electrical power saving. Let's
>>>>>>> concentrate DetNet on reliable, on-time delivery of packets.  =
I'm not
>>>>>>> even sure that "a way to specify the required accuracy" need be =
in scope.
>>>>>>>=20
>>>>>>> Rodney Cummings wrote:
>>>>>>> I rarely disagree with Norm, but on this point I'll have to =
quibble a bit.
>>>>>>> I agree that we don't need DetNet to specify how time sync is
>>>>>>> accomplished. There are plenty of IEEE 1588 techniques (and =
similar)
>>>>>>> for that purpose.
>>>>>>> I also agree that we should concentrate on reliable, on-time =
delivery
>>>>>>> of packets (i.e. worst-case latency).
>>>>>>> If I don't know how accurate my time sync is, then how do I know =
when
>>>>>>> a packet is delivered on time? If I don't know the reliability =
of my
>>>>>>> time sync, how can I reliably measure that packet delivery?
>>>>>>> Almost all (if not 100%) of DetNet use cases require time sync =
at the
>>>>>>> end systems to some degree of accuracy. I agree that we don't =
need to
>>>>>>> address the implementation of that time sync, but the =
application
>>>>>>> requirements are needed for time sync (including reliability) =
just as
>>>>>>> much as for packet delivery.
>>>>>>> --------------------------------
>>>>>>>=20
>>>>>>> _______________________________________________
>>>>>>> detnet mailing list
>>>>>>> detnet@ietf.org <mailto:detnet@ietf.org>
>>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>>=20
>>>>>>=20
>>>>>>=20
>>>>>> _______________________________________________
>>>>>> detnet mailing list
>>>>>> detnet@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>>=20
>>>>>=20
>>>>> --
>>>>> Olivier Marc=C3=A9
>>>>> Nokia Bell Labs France
>>>>> "we need to guard against increased levels of reporting and other =
requirements that distract you from doing what you really need to be =
doing." Rajeev Suri, Nokia CEO, April 2016
>>>>>=20
>>>>> _______________________________________________
>>>>> detnet mailing list
>>>>> detnet@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>=20
>>>>> _______________________________________________
>>>>> detnet mailing list
>>>>> detnet@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>=20
>>>>> _______________________________________________
>>>>> detnet mailing list
>>>>> detnet@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>=20
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>=20
>>>  --
>>>  Jouni Korhonen, Broadcom Ltd.
>>>  M: +1-408-391-7160
>>>=20
>>>  _______________________________________________
>>>  detnet mailing list
>>>  detnet@ietf.org
>>>  https://www.ietf.org/mailman/listinfo/detnet
>>>=20
>>>=20
>>> _______________________________________________
>>> detnet mailing list
>>> detnet@ietf.org
>>> https://www.ietf.org/mailman/listinfo/detnet
>>=20
>>=20
>>=20
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>=20
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet



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To: "Grossman, Ethan A." <eagros@dolby.com>, "detnet@ietf.org" <detnet@ietf.org>
Thread-Topic: [Detnet] DetNet Use Case Statements - How to express app reliability needs?
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Archived-At: <https://mailarchive.ietf.org/arch/msg/detnet/Bc_ZM407FWunCzm57Wvwjsv49-8>
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app reliability needs?
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Hi,

Good topic. :--)) So far DetNet work focused mainly on forwarding parameter=
s (delay, jitter and loss),
but service parameters (e.g., availability, MTBF, etc.) are also important =
for a DetNet use-case.

Reliability (availability) provided in a given DetNet depends on several fa=
ctors (e.g., location of endpoints,=20
network topology, supported redundancy methods, maintenance processes, etc.=
). The usual approach of=20
service providers is to define some availability values the customers can s=
elect for their service.=20

The same should apply for DetNet service, therefore reliability must be a p=
er-flow service parameter.=20
And as You wrote it may impact the number of required redundant paths.

Cheers
Bala'zs

-----Original Message-----
From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Grossman, Ethan =
A.
Sent: Tuesday, November 08, 2016 12:24 AM
To: detnet@ietf.org
Subject: [Detnet] DetNet Use Case Statements - How to express app reliabili=
ty needs?

In starting this thread I inadvertently included two topics - 1) expressing=
 timing accuracy, and 2) expressing reliability, so I am spinning out the l=
atter into this new thread. =20

My question here is "Is the reliability (e.g. number of 9's) a fixed proper=
ty of the given DetNet, or is it something that can be configured on a per-=
flow basis via an API?" =20
For example a DetNet might provide one redundant path, or two redundant pat=
hs, resulting in two distinct levels of reliability, and that could be be "=
for all flows" or on a "per-flow" basis.=20
I would assume that the app should be able to query the network for the rel=
iability figure (or range, or options), then based on that, specify the cho=
ice to the network for a given flow?=20
Is there an existing API for that?=20

Thanks,
Ethan.

________________________________________
From: nfinn <nfinn@alumni.caltech.edu>
Sent: Thursday, November 3, 2016 10:43 AM
To: Patrick Wetterwald (pwetterw)
Cc: Jouni Korhonen; Grossman, Ethan A.; Pascal Thubert; detnet@ietf.org; Ol=
ivier Marce
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app time =
accuracy and reliability needs?

Agreed!

- Norm

> On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) <pwetterw@cisco=
.com> wrote:
>
> Hi Norm,
>
> I agree that Detnet should not spend too much time on time synchronizatio=
n and time accuracy. I just wanted to express that if we want / need to rep=
ort time accuracy, the application is not the only one interested in such i=
nformation. In case of a PCE based Detnet, the PCE is one of the recipient =
of this information.
>
> Some applications may have their own time reference (based on GPS for ins=
tance).  What the application expects from a Detnet network is guarantee of=
 delivery in a maximum latency with a bounded jitter and it differs to the =
PCE to handle all that is needed to ensure it.
>
> Does it make sense?
>
> Thanks,
>
> Patrick
>
> On 02/11/2016, 17:58, "nfinn" <nfinn@alumni.caltech.edu> wrote:
>
>    Patrick,
>
>    If you want to work on this approach, I don't want to stop you.  But, =
it looks to me that it increases the number of options (and thus, everyone'=
s work load) with no benefit gained.
>
>    If the application has time requirements, I assume that it is able to =
synchronize its clock using one or more specific protocols, and therefore k=
nows how to interpret each of those protocols' accuracy information.  Probl=
em solved.  Teaching the application to ask the PCE 1) requires that a PCE =
b e present, and 2) requires the application to implement a query/response =
of some kind to express its requirements and understand the answer.  Keep i=
n mind that the answer is not always "yes/no".  Perhaps the application can=
 operate in different modes, depending on clock accuracy.
>
>    Of course, if you or any expert in the time protocols tell us that onl=
y a centralized controller can make the determination for a significant cla=
ss of use cases, I'm ready to change my mind.
>
>    - Norm
>
>> On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) <pwetterw@cisc=
o.com> wrote:
>>
>> I'm just wondering if this has to be reported to the application or to t=
he PCE in case of central computing?
>>
>> Application asks for the accuracy then the PCE answers if this is possib=
le or not.
>>
>> We may have both cases.
>>
>> Thanks,
>>
>> Patrick
>>
>> On 02/11/2016, 16:43, "detnet on behalf of Jouni Korhonen" <detnet-bounc=
es@ietf.org on behalf of jouni.korhonen@broadcom.com> wrote:
>>
>>   looks good to me.
>>
>>   - jouni
>>
>>> On Oct 31, 2016, at 11:59 PM, nfinn <nfinn@alumni.caltech.edu> wrote:
>>>
>>> I think that's a very good summary of my preferred approach.  Is it sat=
isfactory for you?
>>>
>>> - Norm
>>>
>>>> On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. <eagros@dolby.com> wro=
te:
>>>>
>>>> Hi Pascal, Olivier, Norm, WG,
>>>> So the consensus is, to paraphrase Norm:
>>>>
>>>> 1) Make sure that the time protocols are able to report, along with th=
e time, the accuracy provided.
>>>> 2) The application will decide whether that is sufficient.
>>>> 3) The accuracy reported will likely consist of several parameters (fr=
equency accuracy, absolute accuracy, etc.).
>>>> 4) Different time protocols may have different parameters for accuracy=
.
>>>> 5) An application might care about one or more of those parameters.
>>>> 6) An application might then operate in one of various modes, dependin=
g on the accuracy provided.
>>>>
>>>> If anyone has any other understanding or input, please reply.
>>>> Thanks,
>>>> Ethan.
>>>>
>>>> -----Original Message-----
>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Pascal=20
>>>> Thubert (pthubert)
>>>> Sent: Tuesday, October 11, 2016 4:29 AM
>>>> To: Olivier Marce; detnet@ietf.org
>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
time accuracy and reliability needs?
>>>>
>>>> This is my understanding too, Olivier.
>>>>
>>>> Also, time-related work is done elsewhere, whether one thinks of IETF =
or outside the IETF. We do not want to be taken in the middle of that storm=
.
>>>> Best can do is probably state requirements, but for all I know we are =
using time as an information provided by external means, as opposed to mana=
ging it.
>>>>
>>>> Cheers,
>>>>
>>>> Pascal
>>>>
>>>> -----Original Message-----
>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Olivier=20
>>>> Marce
>>>> Sent: jeudi 6 octobre 2016 12:05
>>>> To: detnet@ietf.org
>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
time accuracy and reliability needs?
>>>>
>>>> Hi,
>>>> I'm in favor of Norm' position: DetNet should concentrate on  reliable=
, on-time delivery of packets. Time accuracy is required for DetNet but out=
 of scope, as many solutions exist and is not only a networking topic.
>>>> At most, DetNet could provide some reference examples on how providing=
 required time accuracy.
>>>>
>>>>
>>>> Regards
>>>>
>>>> Le 06/10/2016 =E0 03:30, nfinn a =E9crit :
>>>>> Interesting question.
>>>>>
>>>>> It seems more useful to me to make sure that the time protocols=20
>>>>> are able to report, along with the time, the accuracy provided. =20
>>>>> The application can then decide whether that is sufficient.  The=20
>>>>> accuracy reported will likely consist of several parameters=20
>>>>> (frequency accuracy, absolute accuracy, etc.).  Different time=20
>>>>> protocols may have different parameters for accuracy.  The=20
>>>>> application might worried about one or the other of those=20
>>>>> parameters.  It might operate in different modes, depending on the=20
>>>>> accuracy provided.  I don't see the value in moving the decision poin=
t anywhere else.
>>>>>
>>>>> With DetNet, one can imagine a bandwidth reservation crossing a=20
>>>>> boundary between two different master clock domains.  My=20
>>>>> inclination would be to disallow that, at least for now.  Given an=20
>>>>> application that runs for long enough, any frequency difference=20
>>>>> between source and sink will eventually cause starvation or overflow.
>>>>>
>>>>> All that said, let's suppose that you have a solid use case that=20
>>>>> is expected to *try* to run across clock domain boundaries, and we=20
>>>>> want to prevent that when it won't work.  This could be solved by=20
>>>>> an application-level protocol that exchanges clock domain information=
.
>>>>> This could be solved by configuring the network controller to=20
>>>>> disallow domain crossings.  This could be handled by parameters in=20
>>>>> the reservation protocol, as you suggest, so that the controller=20
>>>>> can allow some reservations but not others.  I'll leave it to=20
>>>>> timing experts to pick some number of appropriate parameters.
>>>>>
>>>>> One last consideration - Are you sure that all applications that=20
>>>>> have these timing requirements also require bandwidth=20
>>>>> reservations?  I'm not sure of that.  And, if not, a protocol=20
>>>>> separate from the bandwidth reservation might be indicated.
>>>>>
>>>>> - Norm
>>>>>
>>>>>> On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A. <eagros@dolby.com=20
>>>>>> <mailto:eagros@dolby.com>> wrote:
>>>>>>
>>>>>> Hi Folks,
>>>>>>
>>>>>> As of our IETF 96 meeting there were still a couple of Use Case=20
>>>>>> Statements that I would like clarity on. Here's the first,=20
>>>>>> remaining to follow in separate emails.
>>>>>>
>>>>>> Question:
>>>>>> How will an application express its time accuracy and reliability=20
>>>>>> needs? Is that within scope of DetNet?
>>>>>>
>>>>>> Discussion:
>>>>>> In AVB/TSN when an application (talker) attempts to make a stream=20
>>>>>> reservation it must state how much bandwidth that stream=20
>>>>>> reservation requires. Presumably in a LAN this is sufficient=20
>>>>>> since a LAN presumably has consistent time accuracy and reliability =
metrics.
>>>>>>
>>>>>> For DetNet, in which we support interconnected DetNet networks=20
>>>>>> and have widely varying requirements for timing accuracy and=20
>>>>>> reliability depending on the use case, it appears to me that we=20
>>>>>> need to allow an application to provide this kind of information=20
>>>>>> to the network, and a way for the network to either agree or=20
>>>>>> decline to provide the requested service (analogous to AVB/TSN=20
>>>>>> accepting or declining a stream reservation based on the bandwidth r=
equested).
>>>>>>
>>>>>> We have had some discussion about this (see below) but nothing=20
>>>>>> near consensus. Other thoughts from anyone?
>>>>>> Ethan.
>>>>>>
>>>>>> --------------------------------
>>>>>> Discussion, oldest item first:
>>>>>>
>>>>>> Ethan Grossman wrote:
>>>>>> Timekeeping - the only explicit DetNet Ask for this is in the use=20
>>>>>> cases is in M2M as "Precise time synchronization accuracy (1us)"=20
>>>>>> and I think the intent (as in other use cases) is that the DetNet=20
>>>>>> Ask is for a way to specify the required accuracy, not how to achiev=
e that accuracy.
>>>>>>
>>>>>> Norm Finn wrote:
>>>>>> Timekeeping is an essential part of many, probably most, of the=20
>>>>>> applications that also find DetNet useful.  That having been=20
>>>>>> said, so is protection against EMI and electrical power saving.=20
>>>>>> Let's concentrate DetNet on reliable, on-time delivery of=20
>>>>>> packets.  I'm not even sure that "a way to specify the required accu=
racy" need be in scope.
>>>>>>
>>>>>> Rodney Cummings wrote:
>>>>>> I rarely disagree with Norm, but on this point I'll have to quibble =
a bit.
>>>>>> I agree that we don't need DetNet to specify how time sync is=20
>>>>>> accomplished. There are plenty of IEEE 1588 techniques (and=20
>>>>>> similar) for that purpose.
>>>>>> I also agree that we should concentrate on reliable, on-time=20
>>>>>> delivery of packets (i.e. worst-case latency).
>>>>>> If I don't know how accurate my time sync is, then how do I know=20
>>>>>> when a packet is delivered on time? If I don't know the=20
>>>>>> reliability of my time sync, how can I reliably measure that packet =
delivery?
>>>>>> Almost all (if not 100%) of DetNet use cases require time sync at=20
>>>>>> the end systems to some degree of accuracy. I agree that we don't=20
>>>>>> need to address the implementation of that time sync, but the=20
>>>>>> application requirements are needed for time sync (including=20
>>>>>> reliability) just as much as for packet delivery.
>>>>>> --------------------------------
>>>>>>
>>>>>> _______________________________________________
>>>>>> detnet mailing list
>>>>>> detnet@ietf.org <mailto:detnet@ietf.org>=20
>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> detnet mailing list
>>>>> detnet@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>
>>>>
>>>> --
>>>> Olivier Marc=E9
>>>> Nokia Bell Labs France
>>>> "we need to guard against increased levels of reporting and other=20
>>>> requirements that distract you from doing what you really need to=20
>>>> be doing." Rajeev Suri, Nokia CEO, April 2016
>>>>
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>
>>> _______________________________________________
>>> detnet mailing list
>>> detnet@ietf.org
>>> https://www.ietf.org/mailman/listinfo/detnet
>>
>>   --
>>   Jouni Korhonen, Broadcom Ltd.
>>   M: +1-408-391-7160
>>
>>   _______________________________________________
>>   detnet mailing list
>>   detnet@ietf.org
>>   https://www.ietf.org/mailman/listinfo/detnet
>>
>>
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>
>
>
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet


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References: <99768945c86b4c799b3bfdf0eb8f95a7@DLB-XCHPW03.dolby.net> <1AA54660-A765-4BD5-8FFC-FAC919F251AE@alumni.caltech.edu> <87f5bd9e-ebe9-3b91-8cca-49614452a3e7@nokia.com> <CAKUbD+4ic9qDKUiws5b9pQU1gR5stFCmenCmNe1cyqiQ4p8SRg@mail.gmail.com> <8b69ab05d2574a69802c1d5e5c3cc0c1@DLB-XCHPW03.dolby.net> <BB0B9F98-E0C6-4E7E-B1BA-172D1070F8AD@alumni.caltech.edu> <1478559780669.52673@dolby.com>
From: Olivier Marce <Olivier.Marce@nokia.com>
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Subject: Re: [Detnet] [ALU] Re: DetNet Use Case Statements - Latency matching
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Hi all,

"symmetrical latencies", i.e. joint specification/enforcement of 
latencies values on symetrical paths is not in the scope of the network, 
then not in scope of DetNet.
If an app needs "symetrical latencies", it must manage it by itself, 
relying on DetNet for latency on the 2 symetrical paths that the app 
will use.


Le 08/11/2016 à 00:02, Grossman, Ethan A. a écrit :
> So there "could" be a way for an app to "demand" a given min/max
> latency of the network (in addition to being able to query the network
> for min/max values), in which case the network *would* be able to
> provide symmetrical latencies without extra buffering on the part of the
> app, but it sounds like it is still under discussion in Architecture. So
> I conclude we don't have a consensus on this topic yet, still working on it.
>
>
> Ethan.
>
>
> ------------------------------------------------------------------------
> *From:* nfinn <nfinn@alumni.caltech.edu>
> *Sent:* Monday, October 31, 2016 11:57 PM
> *To:* Grossman, Ethan A.
> *Cc:* Gordon Bechtel; Olivier Marce; detnet@ietf.org
> *Subject:* Re: [Detnet] DetNet Use Case Statements - Latency matching
>
> I think we’re still talking about symmetrical latencies.
>
> There are still multiple possibilities.  IF we assume that the network
> can provide both minimum and maximum latency guarantees, then I would
> ask the network what it’s max latency is in both directions, then pick
> max/min values to demand of the network that are not much larger than
> the slowest max latency of the two directions.  If the network has
> sufficient buffering, the network will do the work of matching the
> latencies.
>
> If the network doesn’t have the buffering, then yes, the app has to do
> the buffering.
>
> — Norm
>
>> On Oct 31, 2016, at 5:03 PM, Grossman, Ethan A. <eagros@dolby.com
>> <mailto:eagros@dolby.com>> wrote:
>>
>> Hi Gordy, Norm, Olivier, WG,
>> I understand the consensus is:
>> 1)      The network must be able to report its capabilities for
>> latency (presumably both min and max, thus bounding jitter).
>> 2)      The application must add its own delays to a “faster” path to
>> match a “slower” path if it needs to.
>>
>> If anyone has any other understanding or input, please reply.
>> Thanks,
>> Ethan.
>>
>> *From:* detnet [mailto:detnet-bounces@ietf.org] *On Behalf Of *Gordon
>> Bechtel
>> *Sent:* Thursday, October 06, 2016 8:56 AM
>> *To:* Olivier Marce
>> *Cc:* detnet@ietf.org <mailto:detnet@ietf.org>
>> *Subject:* Re: [Detnet] DetNet Use Case Statements - Latency matching
>>
>> Seems to me that the question of latency metrics can be resolved in
>> the same way Norm suggested for timing and bandwidth: Let the
>> network /_report_/ on what it is capable of (with whatever metrics
>> this group feels makes sense) and let the application /_decide_/ how
>> best to use (or not use) the network.
>>
>> In the particular case of matched latencies, the network should report
>> the latency metrics for each direction of the flow, and the
>> application can decide if this is sufficient.  Some applications need
>> symmetric latencies (it sounds like the utility applications do) and
>> some don't.  But the network doesn't know that.  Only the application
>> does.
>>
>> Gordy
>>
>> On Thu, Oct 6, 2016 at 4:16 AM, Olivier Marce <Olivier.Marce@nokia.com
>> <mailto:Olivier.Marce@nokia.com>> wrote:
>> Hi,
>> I have the feeling that expressing min latency in addition to max
>> latency is a loose way to express jitter control.
>> There is a tradeoff between latency/jitter constraints and
>> protection/paths redundancies: one could not expect having the same
>> latency and jitter for one single path, than for multiple concurrent
>> paths.
>> As such jitter should be dependent of level of protections i.e. more
>> paths, higher acceptable jitter.
>>
>> I do not see (yet) any reason for having similar latency on send and
>> return paths.
>>
>> Regards
>>
>> Le 06/10/2016 à 03:43, nfinn a écrit :
>>
>> The architecture draft still mentions both minimum and maximum latency
>> as specifiable.  In some sense, that solves the problem.  The issue, of
>> course, is picking the minimum and maximum numbers.  Perhaps there is
>> some way to provide clues to the app so it can pick suitable numbers.
>>
>> Bit, as I think about it, bi-directional latency equality is not at all
>> trivial to maintain.  The existing TSN standards report latency, instead
>> of satisfying a requirement for latency.  The imagined use (by me,
>> anyway) of a max latency parameter is to allow the network to change
>> topology, or reroute a stream, or add higher-priority flows, and still
>> guarantee the max latency is met.  If, by bidirectional latency
>> matching, you mean, “make both slow if one is slow, and vice-versa,” I
>> don’t know how to do that.  If you mean “meet min and max latency
>> specifications for the flow”, then were on the right track, already.
>>
>> — Norm
>>
>> On Oct 5, 2016, at 4:25 PM, Grossman, Ethan A. <eagros@dolby.com
>> <mailto:eagros@dolby.com>
>> <mailto:eagros@dolby.com <mailto:eagros@dolby.com>>> wrote:
>>
>> Statement:
>> Latency matching – single- or bi-directional. The Utilities use case
>> needs this, but is this something we need to address in DetNet?
>>
>> Discussion (oldest first):
>>
>> Ethan Grossman wrote:
>> This came up because at least one use case mentioned a need for
>> multiple outgoing paths (or the send and return paths) to have matched
>> latencies. I suppose one way to do this is to specify a latency which
>> is the minimum, and the add delay to the other path(s) to match it –
>> but does this happen at the DetNet level or is it something the
>> application layer would do?
>>
>> Pascal Thubert wrote:
>> This seems related to the in-order packets delivery item. A tight
>> latency control can be useful to maintain that order. But doesn’t this
>> imply Time triggered operations?
>> We could also add that feature of voluntary latency addition, probably
>> associated to jitter elimination.
>> ---------------------------------------------------------
>>
>>
>>
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>> --
>> Olivier Marcé
>> Nokia Bell Labs France
>> "we need to guard against increased levels of reporting and other
>> requirements that distract you from doing what you really need to be
>> doing." Rajeev Suri, Nokia CEO, April 2016
>>
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-- 
Olivier Marcé
Nokia Bell Labs France
"we need to guard against increased levels of reporting and other
requirements that distract you from doing what you really need to be 
doing." Rajeev Suri, Nokia CEO, April 2016


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From: Tim Chown <Tim.Chown@jisc.ac.uk>
To: "Grossman, Ethan A." <eagros@dolby.com>
Thread-Topic: [Detnet] DetNet Security Review
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Date: Tue, 8 Nov 2016 11:44:18 +0000
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Subject: Re: [Detnet] DetNet Use Case Statements - How to express app reliability needs?
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Others have given good answers to this question.  Here=E2=80=99s my =
$0.02.

My first thought (in an IEEE contribution a few years ago) was that an =
application could specify its reliability requirement for a given flow, =
and the network would meet it or say, =E2=80=9CNo.=E2=80=9D  And, =
ultimately, that may be achievable.  But, not easily.

For example =E2=80=94 does you application *really* know whether it =
needs 10^-12 or 10^-13 loss rate?  Does the network *really* know =
whether it can deliver 10^-12 or 10^-13? =20

I=E2=80=99m leaning, at this time, towards:

  =E2=80=A2 The network operator defines some small number of classes of =
delivery reliability, based on number of paths, whether the paths have =
wireless links, or whatever other variables are present in the network.  =
Note that these classes may have criteria other than simply, =
"probability of loss".  At the very least, there are a range of loss =
rates for different time scales, that take MTTR into account.

  =E2=80=A2 The app owners decide which class of reliability is required =
for each flow, and how to balance network reliability against =
application-level mitigation of failures.

  =E2=80=A2 At run time, a reservation request includes a reliability =
class specifier.

  =E2=80=A2 The app owners and network administrators have to find =
network design, app design, and class structure that gives a =
cost-effective solution to the overall problem.

This is not dissimilar to the DiffServ situation.  We (DetNet) might or =
might not be able to define some useful guidelines for reliability =
classes that are widely applicable.

Having this paradigm in mind might help us define useful ways to =
parameterize the problem.

=E2=80=94 Norm

> On Nov 7, 2016, at 17:24, Grossman, Ethan A. <eagros@dolby.com> wrote:
>=20
> In starting this thread I inadvertently included two topics - 1) =
expressing timing accuracy, and 2) expressing reliability, so I am =
spinning out the latter into this new thread. =20
>=20
> My question here is "Is the reliability (e.g. number of 9's) a fixed =
property of the given DetNet, or is it something that can be configured =
on a per-flow basis via an API?" =20
> For example a DetNet might provide one redundant path, or two =
redundant paths, resulting in two distinct levels of reliability, and =
that could be be "for all flows" or on a "per-flow" basis.=20
> I would assume that the app should be able to query the network for =
the reliability figure (or range, or options), then based on that, =
specify the choice to the network for a given flow?=20
> Is there an existing API for that?=20
>=20
> Thanks,
> Ethan.
>=20
> ________________________________________
> From: nfinn <nfinn@alumni.caltech.edu>
> Sent: Thursday, November 3, 2016 10:43 AM
> To: Patrick Wetterwald (pwetterw)
> Cc: Jouni Korhonen; Grossman, Ethan A.; Pascal Thubert; =
detnet@ietf.org; Olivier Marce
> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
time accuracy and reliability needs?
>=20
> Agreed!
>=20
> =E2=80=94 Norm
>=20
>> On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) =
<pwetterw@cisco.com> wrote:
>>=20
>> Hi Norm,
>>=20
>> I agree that Detnet should not spend too much time on time =
synchronization and time accuracy. I just wanted to express that if we =
want / need to report time accuracy, the application is not the only one =
interested in such information. In case of a PCE based Detnet, the PCE =
is one of the recipient of this information.
>>=20
>> Some applications may have their own time reference (based on GPS for =
instance).  What the application expects from a Detnet network is =
guarantee of delivery in a maximum latency with a bounded jitter and it =
differs to the PCE to handle all that is needed to ensure it.
>>=20
>> Does it make sense?
>>=20
>> Thanks,
>>=20
>> Patrick
>>=20
>> On 02/11/2016, 17:58, "nfinn" <nfinn@alumni.caltech.edu> wrote:
>>=20
>>   Patrick,
>>=20
>>   If you want to work on this approach, I don=E2=80=99t want to stop =
you.  But, it looks to me that it increases the number of options (and =
thus, everyone=E2=80=99s work load) with no benefit gained.
>>=20
>>   If the application has time requirements, I assume that it is able =
to synchronize its clock using one or more specific protocols, and =
therefore knows how to interpret each of those protocols=E2=80=99 =
accuracy information.  Problem solved.  Teaching the application to ask =
the PCE 1) requires that a PCE b e present, and 2) requires the =
application to implement a query/response of some kind to express its =
requirements and understand the answer.  Keep in mind that the answer is =
not always =E2=80=9Cyes/no=E2=80=9D.  Perhaps the application can =
operate in different modes, depending on clock accuracy.
>>=20
>>   Of course, if you or any expert in the time protocols tell us that =
only a centralized controller can make the determination for a =
significant class of use cases, I=E2=80=99m ready to change my mind.
>>=20
>>   =E2=80=94 Norm
>>=20
>>> On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) =
<pwetterw@cisco.com> wrote:
>>>=20
>>> I=E2=80=99m just wondering if this has to be reported to the =
application or to the PCE in case of central computing?
>>>=20
>>> Application asks for the accuracy then the PCE answers if this is =
possible or not.
>>>=20
>>> We may have both cases.
>>>=20
>>> Thanks,
>>>=20
>>> Patrick
>>>=20
>>> On 02/11/2016, 16:43, "detnet on behalf of Jouni Korhonen" =
<detnet-bounces@ietf.org on behalf of jouni.korhonen@broadcom.com> =
wrote:
>>>=20
>>>  looks good to me.
>>>=20
>>>  - jouni
>>>=20
>>>> On Oct 31, 2016, at 11:59 PM, nfinn <nfinn@alumni.caltech.edu> =
wrote:
>>>>=20
>>>> I think that=E2=80=99s a very good summary of my preferred =
approach.  Is it satisfactory for you?
>>>>=20
>>>> =E2=80=94 Norm
>>>>=20
>>>>> On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. <eagros@dolby.com> =
wrote:
>>>>>=20
>>>>> Hi Pascal, Olivier, Norm, WG,
>>>>> So the consensus is, to paraphrase Norm:
>>>>>=20
>>>>> 1) Make sure that the time protocols are able to report, along =
with the time, the accuracy provided.
>>>>> 2) The application will decide whether that is sufficient.
>>>>> 3) The accuracy reported will likely consist of several parameters =
(frequency accuracy, absolute accuracy, etc.).
>>>>> 4) Different time protocols may have different parameters for =
accuracy.
>>>>> 5) An application might care about one or more of those =
parameters.
>>>>> 6) An application might then operate in one of various modes, =
depending on the accuracy provided.
>>>>>=20
>>>>> If anyone has any other understanding or input, please reply.
>>>>> Thanks,
>>>>> Ethan.
>>>>>=20
>>>>> -----Original Message-----
>>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Pascal =
Thubert (pthubert)
>>>>> Sent: Tuesday, October 11, 2016 4:29 AM
>>>>> To: Olivier Marce; detnet@ietf.org
>>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?
>>>>>=20
>>>>> This is my understanding too, Olivier.
>>>>>=20
>>>>> Also, time-related work is done elsewhere, whether one thinks of =
IETF or outside the IETF. We do not want to be taken in the middle of =
that storm.
>>>>> Best can do is probably state requirements, but for all I know we =
are using time as an information provided by external means, as opposed =
to managing it.
>>>>>=20
>>>>> Cheers,
>>>>>=20
>>>>> Pascal
>>>>>=20
>>>>> -----Original Message-----
>>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Olivier =
Marce
>>>>> Sent: jeudi 6 octobre 2016 12:05
>>>>> To: detnet@ietf.org
>>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?
>>>>>=20
>>>>> Hi,
>>>>> I'm in favor of Norm' position: DetNet should concentrate on  =
reliable, on-time delivery of packets. Time accuracy is required for =
DetNet but out of scope, as many solutions exist and is not only a =
networking topic.
>>>>> At most, DetNet could provide some reference examples on how =
providing required time accuracy.
>>>>>=20
>>>>>=20
>>>>> Regards
>>>>>=20
>>>>> Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :
>>>>>> Interesting question.
>>>>>>=20
>>>>>> It seems more useful to me to make sure that the time protocols =
are
>>>>>> able to report, along with the time, the accuracy provided.  The
>>>>>> application can then decide whether that is sufficient.  The =
accuracy
>>>>>> reported will likely consist of several parameters (frequency
>>>>>> accuracy, absolute accuracy, etc.).  Different time protocols may =
have
>>>>>> different parameters for accuracy.  The application might worried
>>>>>> about one or the other of those parameters.  It might operate in
>>>>>> different modes, depending on the accuracy provided.  I don't see =
the
>>>>>> value in moving the decision point anywhere else.
>>>>>>=20
>>>>>> With DetNet, one can imagine a bandwidth reservation crossing a
>>>>>> boundary between two different master clock domains.  My =
inclination
>>>>>> would be to disallow that, at least for now.  Given an =
application
>>>>>> that runs for long enough, any frequency difference between =
source and
>>>>>> sink will eventually cause starvation or overflow.
>>>>>>=20
>>>>>> All that said, let's suppose that you have a solid use case that =
is
>>>>>> expected to *try* to run across clock domain boundaries, and we =
want
>>>>>> to prevent that when it won't work.  This could be solved by an
>>>>>> application-level protocol that exchanges clock domain =
information.
>>>>>> This could be solved by configuring the network controller to
>>>>>> disallow domain crossings.  This could be handled by parameters =
in the
>>>>>> reservation protocol, as you suggest, so that the controller can =
allow
>>>>>> some reservations but not others.  I'll leave it to timing =
experts to
>>>>>> pick some number of appropriate parameters.
>>>>>>=20
>>>>>> One last consideration - Are you sure that all applications that =
have
>>>>>> these timing requirements also require bandwidth reservations?  =
I'm
>>>>>> not sure of that.  And, if not, a protocol separate from the =
bandwidth
>>>>>> reservation might be indicated.
>>>>>>=20
>>>>>> - Norm
>>>>>>=20
>>>>>>> On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A. <eagros@dolby.com
>>>>>>> <mailto:eagros@dolby.com>> wrote:
>>>>>>>=20
>>>>>>> Hi Folks,
>>>>>>>=20
>>>>>>> As of our IETF 96 meeting there were still a couple of Use Case
>>>>>>> Statements that I would like clarity on. Here's the first, =
remaining
>>>>>>> to follow in separate emails.
>>>>>>>=20
>>>>>>> Question:
>>>>>>> How will an application express its time accuracy and =
reliability
>>>>>>> needs? Is that within scope of DetNet?
>>>>>>>=20
>>>>>>> Discussion:
>>>>>>> In AVB/TSN when an application (talker) attempts to make a =
stream
>>>>>>> reservation it must state how much bandwidth that stream =
reservation
>>>>>>> requires. Presumably in a LAN this is sufficient since a LAN
>>>>>>> presumably has consistent time accuracy and reliability metrics.
>>>>>>>=20
>>>>>>> For DetNet, in which we support interconnected DetNet networks =
and
>>>>>>> have widely varying requirements for timing accuracy and =
reliability
>>>>>>> depending on the use case, it appears to me that we need to =
allow an
>>>>>>> application to provide this kind of information to the network, =
and a
>>>>>>> way for the network to either agree or decline to provide the
>>>>>>> requested service (analogous to AVB/TSN accepting or declining a
>>>>>>> stream reservation based on the bandwidth requested).
>>>>>>>=20
>>>>>>> We have had some discussion about this (see below) but nothing =
near
>>>>>>> consensus. Other thoughts from anyone?
>>>>>>> Ethan.
>>>>>>>=20
>>>>>>> --------------------------------
>>>>>>> Discussion, oldest item first:
>>>>>>>=20
>>>>>>> Ethan Grossman wrote:
>>>>>>> Timekeeping - the only explicit DetNet Ask for this is in the =
use
>>>>>>> cases is in M2M as "Precise time synchronization accuracy (1us)" =
and
>>>>>>> I think the intent (as in other use cases) is that the DetNet =
Ask is
>>>>>>> for a way to specify the required accuracy, not how to achieve =
that accuracy.
>>>>>>>=20
>>>>>>> Norm Finn wrote:
>>>>>>> Timekeeping is an essential part of many, probably most, of the
>>>>>>> applications that also find DetNet useful.  That having been =
said, so
>>>>>>> is protection against EMI and electrical power saving. Let's
>>>>>>> concentrate DetNet on reliable, on-time delivery of packets.  =
I'm not
>>>>>>> even sure that "a way to specify the required accuracy" need be =
in scope.
>>>>>>>=20
>>>>>>> Rodney Cummings wrote:
>>>>>>> I rarely disagree with Norm, but on this point I'll have to =
quibble a bit.
>>>>>>> I agree that we don't need DetNet to specify how time sync is
>>>>>>> accomplished. There are plenty of IEEE 1588 techniques (and =
similar)
>>>>>>> for that purpose.
>>>>>>> I also agree that we should concentrate on reliable, on-time =
delivery
>>>>>>> of packets (i.e. worst-case latency).
>>>>>>> If I don't know how accurate my time sync is, then how do I know =
when
>>>>>>> a packet is delivered on time? If I don't know the reliability =
of my
>>>>>>> time sync, how can I reliably measure that packet delivery?
>>>>>>> Almost all (if not 100%) of DetNet use cases require time sync =
at the
>>>>>>> end systems to some degree of accuracy. I agree that we don't =
need to
>>>>>>> address the implementation of that time sync, but the =
application
>>>>>>> requirements are needed for time sync (including reliability) =
just as
>>>>>>> much as for packet delivery.
>>>>>>> --------------------------------
>>>>>>>=20
>>>>>>> _______________________________________________
>>>>>>> detnet mailing list
>>>>>>> detnet@ietf.org <mailto:detnet@ietf.org>
>>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>>=20
>>>>>>=20
>>>>>>=20
>>>>>> _______________________________________________
>>>>>> detnet mailing list
>>>>>> detnet@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>>=20
>>>>>=20
>>>>> --
>>>>> Olivier Marc=C3=A9
>>>>> Nokia Bell Labs France
>>>>> "we need to guard against increased levels of reporting and other =
requirements that distract you from doing what you really need to be =
doing." Rajeev Suri, Nokia CEO, April 2016
>>>>>=20
>>>>> _______________________________________________
>>>>> detnet mailing list
>>>>> detnet@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>=20
>>>>> _______________________________________________
>>>>> detnet mailing list
>>>>> detnet@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>=20
>>>>> _______________________________________________
>>>>> detnet mailing list
>>>>> detnet@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>=20
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>=20
>>>  --
>>>  Jouni Korhonen, Broadcom Ltd.
>>>  M: +1-408-391-7160
>>>=20
>>>  _______________________________________________
>>>  detnet mailing list
>>>  detnet@ietf.org
>>>  https://www.ietf.org/mailman/listinfo/detnet
>>>=20
>>>=20
>>> _______________________________________________
>>> detnet mailing list
>>> detnet@ietf.org
>>> https://www.ietf.org/mailman/listinfo/detnet
>>=20
>>=20
>>=20
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>=20
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet


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Subject: Re: [Detnet] DetNet Use Case Statements - How to express app reliability needs?
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From: "Prof. Diego Dujovne" <diego.dujovne@mail.udp.cl>
Date: Tue, 8 Nov 2016 13:59:27 -0300
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Cc: "Grossman, Ethan A." <eagros@dolby.com>, detnet@ietf.org, Norman Finn <nfinn@alumni.caltech.edu>
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app reliability needs?
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Dear all,
              I wonder if you have included burstiness as a measure of the
number of consecutive packet loss.
Regards,

         Diego

El nov 8, 2016 1:33 PM, "Bal=C3=A1zs Varga A" <balazs.a.varga@ericsson.com>
escribi=C3=B3:

> Hi Norm,
>
> Agree the direction except one particular part, namely how you have
> defined loss.
> > ... At the very least, there are a range of loss rates for different
> time scales, that
> > take MTTR into account.
> We should not couple loss and availability so tight via MTTR. It is more
> usual to define
> service parameters as follows:
> - Loss rate: ratio of lost and forwarded packets when the service is
> available.
> - Availability: when forwarding parameters (BW, delay, etc.) are meet.
> For example if you have a network outage then service is not available.
> During that
> period of time the loss rate is 100 percent. Furthermore operators usuall=
y
> extract
> some time periods (e.g. predefined maintenance time, etc.) when calculati=
ng
> availability.
>
> Therefore the application should require two set of parameters:
> - transport parameters (BW, delay, jitter, loss, etc.)
> - service parameters (availability, MTTR, etc.)
>
> Cheers
> Bala'zs
>
> -----Original Message-----
> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Norman Finn
> Sent: Tuesday, November 08, 2016 3:57 PM
> To: Grossman, Ethan A. <eagros@dolby.com>
> Cc: detnet@ietf.org
> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app
> reliability needs?
>
> Others have given good answers to this question.  Here=E2=80=99s my $0.02=
.
>
> My first thought (in an IEEE contribution a few years ago) was that an
> application could specify its reliability requirement for a given flow, a=
nd
> the network would meet it or say, =E2=80=9CNo.=E2=80=9D  And, ultimately,=
 that may be
> achievable.  But, not easily.
>
> For example =E2=80=94 does you application *really* know whether it needs=
 10^-12
> or 10^-13 loss rate?  Does the network *really* know whether it can deliv=
er
> 10^-12 or 10^-13?
>
> I=E2=80=99m leaning, at this time, towards:
>
>   =E2=80=A2 The network operator defines some small number of classes of =
delivery
> reliability, based on number of paths, whether the paths have wireless
> links, or whatever other variables are present in the network.  Note that
> these classes may have criteria other than simply, "probability of loss".
> At the very least, there are a range of loss rates for different time
> scales, that take MTTR into account.
>
>   =E2=80=A2 The app owners decide which class of reliability is required =
for each
> flow, and how to balance network reliability against application-level
> mitigation of failures.
>
>   =E2=80=A2 At run time, a reservation request includes a reliability cla=
ss
> specifier.
>
>   =E2=80=A2 The app owners and network administrators have to find networ=
k design,
> app design, and class structure that gives a cost-effective solution to t=
he
> overall problem.
>
> This is not dissimilar to the DiffServ situation.  We (DetNet) might or
> might not be able to define some useful guidelines for reliability classe=
s
> that are widely applicable.
>
> Having this paradigm in mind might help us define useful ways to
> parameterize the problem.
>
> =E2=80=94 Norm
>
> > On Nov 7, 2016, at 17:24, Grossman, Ethan A. <eagros@dolby.com> wrote:
> >
> > In starting this thread I inadvertently included two topics - 1)
> expressing timing accuracy, and 2) expressing reliability, so I am spinni=
ng
> out the latter into this new thread.
> >
> > My question here is "Is the reliability (e.g. number of 9's) a fixed
> property of the given DetNet, or is it something that can be configured o=
n
> a per-flow basis via an API?"
> > For example a DetNet might provide one redundant path, or two redundant
> paths, resulting in two distinct levels of reliability, and that could be
> be "for all flows" or on a "per-flow" basis.
> > I would assume that the app should be able to query the network for the
> reliability figure (or range, or options), then based on that, specify th=
e
> choice to the network for a given flow?
> > Is there an existing API for that?
> >
> > Thanks,
> > Ethan.
> >
> > ________________________________________
> > From: nfinn <nfinn@alumni.caltech.edu>
> > Sent: Thursday, November 3, 2016 10:43 AM
> > To: Patrick Wetterwald (pwetterw)
> > Cc: Jouni Korhonen; Grossman, Ethan A.; Pascal Thubert;
> > detnet@ietf.org; Olivier Marce
> > Subject: Re: [Detnet] DetNet Use Case Statements - How to express app
> time accuracy and reliability needs?
> >
> > Agreed!
> >
> > =E2=80=94 Norm
> >
> >> On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) <
> pwetterw@cisco.com> wrote:
> >>
> >> Hi Norm,
> >>
> >> I agree that Detnet should not spend too much time on time
> synchronization and time accuracy. I just wanted to express that if we wa=
nt
> / need to report time accuracy, the application is not the only one
> interested in such information. In case of a PCE based Detnet, the PCE is
> one of the recipient of this information.
> >>
> >> Some applications may have their own time reference (based on GPS for
> instance).  What the application expects from a Detnet network is guarant=
ee
> of delivery in a maximum latency with a bounded jitter and it differs to
> the PCE to handle all that is needed to ensure it.
> >>
> >> Does it make sense?
> >>
> >> Thanks,
> >>
> >> Patrick
> >>
> >> On 02/11/2016, 17:58, "nfinn" <nfinn@alumni.caltech.edu> wrote:
> >>
> >>   Patrick,
> >>
> >>   If you want to work on this approach, I don=E2=80=99t want to stop y=
ou.  But,
> it looks to me that it increases the number of options (and thus,
> everyone=E2=80=99s work load) with no benefit gained.
> >>
> >>   If the application has time requirements, I assume that it is able t=
o
> synchronize its clock using one or more specific protocols, and therefore
> knows how to interpret each of those protocols=E2=80=99 accuracy informat=
ion.
> Problem solved.  Teaching the application to ask the PCE 1) requires that=
 a
> PCE b e present, and 2) requires the application to implement a
> query/response of some kind to express its requirements and understand th=
e
> answer.  Keep in mind that the answer is not always =E2=80=9Cyes/no=E2=80=
=9D.  Perhaps the
> application can operate in different modes, depending on clock accuracy.
> >>
> >>   Of course, if you or any expert in the time protocols tell us that
> only a centralized controller can make the determination for a significan=
t
> class of use cases, I=E2=80=99m ready to change my mind.
> >>
> >>   =E2=80=94 Norm
> >>
> >>> On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) <
> pwetterw@cisco.com> wrote:
> >>>
> >>> I=E2=80=99m just wondering if this has to be reported to the applicat=
ion or to
> the PCE in case of central computing?
> >>>
> >>> Application asks for the accuracy then the PCE answers if this is
> possible or not.
> >>>
> >>> We may have both cases.
> >>>
> >>> Thanks,
> >>>
> >>> Patrick
> >>>
> >>> On 02/11/2016, 16:43, "detnet on behalf of Jouni Korhonen" <
> detnet-bounces@ietf.org on behalf of jouni.korhonen@broadcom.com> wrote:
> >>>
> >>>  looks good to me.
> >>>
> >>>  - jouni
> >>>
> >>>> On Oct 31, 2016, at 11:59 PM, nfinn <nfinn@alumni.caltech.edu> wrote=
:
> >>>>
> >>>> I think that=E2=80=99s a very good summary of my preferred approach.=
  Is it
> satisfactory for you?
> >>>>
> >>>> =E2=80=94 Norm
> >>>>
> >>>>> On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. <eagros@dolby.com>
> wrote:
> >>>>>
> >>>>> Hi Pascal, Olivier, Norm, WG,
> >>>>> So the consensus is, to paraphrase Norm:
> >>>>>
> >>>>> 1) Make sure that the time protocols are able to report, along with
> the time, the accuracy provided.
> >>>>> 2) The application will decide whether that is sufficient.
> >>>>> 3) The accuracy reported will likely consist of several parameters
> (frequency accuracy, absolute accuracy, etc.).
> >>>>> 4) Different time protocols may have different parameters for
> accuracy.
> >>>>> 5) An application might care about one or more of those parameters.
> >>>>> 6) An application might then operate in one of various modes,
> depending on the accuracy provided.
> >>>>>
> >>>>> If anyone has any other understanding or input, please reply.
> >>>>> Thanks,
> >>>>> Ethan.
> >>>>>
> >>>>> -----Original Message-----
> >>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Pascal
> >>>>> Thubert (pthubert)
> >>>>> Sent: Tuesday, October 11, 2016 4:29 AM
> >>>>> To: Olivier Marce; detnet@ietf.org
> >>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express
> app time accuracy and reliability needs?
> >>>>>
> >>>>> This is my understanding too, Olivier.
> >>>>>
> >>>>> Also, time-related work is done elsewhere, whether one thinks of
> IETF or outside the IETF. We do not want to be taken in the middle of tha=
t
> storm.
> >>>>> Best can do is probably state requirements, but for all I know we
> are using time as an information provided by external means, as opposed t=
o
> managing it.
> >>>>>
> >>>>> Cheers,
> >>>>>
> >>>>> Pascal
> >>>>>
> >>>>> -----Original Message-----
> >>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Olivier
> >>>>> Marce
> >>>>> Sent: jeudi 6 octobre 2016 12:05
> >>>>> To: detnet@ietf.org
> >>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express
> app time accuracy and reliability needs?
> >>>>>
> >>>>> Hi,
> >>>>> I'm in favor of Norm' position: DetNet should concentrate on
> reliable, on-time delivery of packets. Time accuracy is required for DetN=
et
> but out of scope, as many solutions exist and is not only a networking
> topic.
> >>>>> At most, DetNet could provide some reference examples on how
> providing required time accuracy.
> >>>>>
> >>>>>
> >>>>> Regards
> >>>>>
> >>>>> Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :
> >>>>>> Interesting question.
> >>>>>>
> >>>>>> It seems more useful to me to make sure that the time protocols
> >>>>>> are able to report, along with the time, the accuracy provided.
> >>>>>> The application can then decide whether that is sufficient.  The
> >>>>>> accuracy reported will likely consist of several parameters
> >>>>>> (frequency accuracy, absolute accuracy, etc.).  Different time
> >>>>>> protocols may have different parameters for accuracy.  The
> >>>>>> application might worried about one or the other of those
> >>>>>> parameters.  It might operate in different modes, depending on
> >>>>>> the accuracy provided.  I don't see the value in moving the
> decision point anywhere else.
> >>>>>>
> >>>>>> With DetNet, one can imagine a bandwidth reservation crossing a
> >>>>>> boundary between two different master clock domains.  My
> >>>>>> inclination would be to disallow that, at least for now.  Given
> >>>>>> an application that runs for long enough, any frequency
> >>>>>> difference between source and sink will eventually cause starvatio=
n
> or overflow.
> >>>>>>
> >>>>>> All that said, let's suppose that you have a solid use case that
> >>>>>> is expected to *try* to run across clock domain boundaries, and
> >>>>>> we want to prevent that when it won't work.  This could be solved
> >>>>>> by an application-level protocol that exchanges clock domain
> information.
> >>>>>> This could be solved by configuring the network controller to
> >>>>>> disallow domain crossings.  This could be handled by parameters
> >>>>>> in the reservation protocol, as you suggest, so that the
> >>>>>> controller can allow some reservations but not others.  I'll
> >>>>>> leave it to timing experts to pick some number of appropriate
> parameters.
> >>>>>>
> >>>>>> One last consideration - Are you sure that all applications that
> >>>>>> have these timing requirements also require bandwidth
> >>>>>> reservations?  I'm not sure of that.  And, if not, a protocol
> >>>>>> separate from the bandwidth reservation might be indicated.
> >>>>>>
> >>>>>> - Norm
> >>>>>>
> >>>>>>> On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A. <eagros@dolby.com
> >>>>>>> <mailto:eagros@dolby.com>> wrote:
> >>>>>>>
> >>>>>>> Hi Folks,
> >>>>>>>
> >>>>>>> As of our IETF 96 meeting there were still a couple of Use Case
> >>>>>>> Statements that I would like clarity on. Here's the first,
> >>>>>>> remaining to follow in separate emails.
> >>>>>>>
> >>>>>>> Question:
> >>>>>>> How will an application express its time accuracy and
> >>>>>>> reliability needs? Is that within scope of DetNet?
> >>>>>>>
> >>>>>>> Discussion:
> >>>>>>> In AVB/TSN when an application (talker) attempts to make a
> >>>>>>> stream reservation it must state how much bandwidth that stream
> >>>>>>> reservation requires. Presumably in a LAN this is sufficient
> >>>>>>> since a LAN presumably has consistent time accuracy and
> reliability metrics.
> >>>>>>>
> >>>>>>> For DetNet, in which we support interconnected DetNet networks
> >>>>>>> and have widely varying requirements for timing accuracy and
> >>>>>>> reliability depending on the use case, it appears to me that we
> >>>>>>> need to allow an application to provide this kind of information
> >>>>>>> to the network, and a way for the network to either agree or
> >>>>>>> decline to provide the requested service (analogous to AVB/TSN
> >>>>>>> accepting or declining a stream reservation based on the bandwidt=
h
> requested).
> >>>>>>>
> >>>>>>> We have had some discussion about this (see below) but nothing
> >>>>>>> near consensus. Other thoughts from anyone?
> >>>>>>> Ethan.
> >>>>>>>
> >>>>>>> -------------------------------- Discussion, oldest item first:
> >>>>>>>
> >>>>>>> Ethan Grossman wrote:
> >>>>>>> Timekeeping - the only explicit DetNet Ask for this is in the
> >>>>>>> use cases is in M2M as "Precise time synchronization accuracy
> >>>>>>> (1us)" and I think the intent (as in other use cases) is that
> >>>>>>> the DetNet Ask is for a way to specify the required accuracy, not
> how to achieve that accuracy.
> >>>>>>>
> >>>>>>> Norm Finn wrote:
> >>>>>>> Timekeeping is an essential part of many, probably most, of the
> >>>>>>> applications that also find DetNet useful.  That having been
> >>>>>>> said, so is protection against EMI and electrical power saving.
> >>>>>>> Let's concentrate DetNet on reliable, on-time delivery of
> >>>>>>> packets.  I'm not even sure that "a way to specify the required
> accuracy" need be in scope.
> >>>>>>>
> >>>>>>> Rodney Cummings wrote:
> >>>>>>> I rarely disagree with Norm, but on this point I'll have to
> quibble a bit.
> >>>>>>> I agree that we don't need DetNet to specify how time sync is
> >>>>>>> accomplished. There are plenty of IEEE 1588 techniques (and
> >>>>>>> similar) for that purpose.
> >>>>>>> I also agree that we should concentrate on reliable, on-time
> >>>>>>> delivery of packets (i.e. worst-case latency).
> >>>>>>> If I don't know how accurate my time sync is, then how do I know
> >>>>>>> when a packet is delivered on time? If I don't know the
> >>>>>>> reliability of my time sync, how can I reliably measure that
> packet delivery?
> >>>>>>> Almost all (if not 100%) of DetNet use cases require time sync
> >>>>>>> at the end systems to some degree of accuracy. I agree that we
> >>>>>>> don't need to address the implementation of that time sync, but
> >>>>>>> the application requirements are needed for time sync (including
> >>>>>>> reliability) just as much as for packet delivery.
> >>>>>>> --------------------------------
> >>>>>>>
> >>>>>>> _______________________________________________
> >>>>>>> detnet mailing list
> >>>>>>> detnet@ietf.org <mailto:detnet@ietf.org>
> >>>>>>> https://www.ietf.org/mailman/listinfo/detnet
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> _______________________________________________
> >>>>>> detnet mailing list
> >>>>>> detnet@ietf.org
> >>>>>> https://www.ietf.org/mailman/listinfo/detnet
> >>>>>>
> >>>>>
> >>>>> --
> >>>>> Olivier Marc=C3=A9
> >>>>> Nokia Bell Labs France
> >>>>> "we need to guard against increased levels of reporting and other
> >>>>> requirements that distract you from doing what you really need to
> >>>>> be doing." Rajeev Suri, Nokia CEO, April 2016
> >>>>>
> >>>>> _______________________________________________
> >>>>> detnet mailing list
> >>>>> detnet@ietf.org
> >>>>> https://www.ietf.org/mailman/listinfo/detnet
> >>>>>
> >>>>> _______________________________________________
> >>>>> detnet mailing list
> >>>>> detnet@ietf.org
> >>>>> https://www.ietf.org/mailman/listinfo/detnet
> >>>>>
> >>>>> _______________________________________________
> >>>>> detnet mailing list
> >>>>> detnet@ietf.org
> >>>>> https://www.ietf.org/mailman/listinfo/detnet
> >>>>
> >>>> _______________________________________________
> >>>> detnet mailing list
> >>>> detnet@ietf.org
> >>>> https://www.ietf.org/mailman/listinfo/detnet
> >>>
> >>>  --
> >>>  Jouni Korhonen, Broadcom Ltd.
> >>>  M: +1-408-391-7160
> >>>
> >>>  _______________________________________________
> >>>  detnet mailing list
> >>>  detnet@ietf.org
> >>>  https://www.ietf.org/mailman/listinfo/detnet
> >>>
> >>>
> >>> _______________________________________________
> >>> detnet mailing list
> >>> detnet@ietf.org
> >>> https://www.ietf.org/mailman/listinfo/detnet
> >>
> >>
> >>
> >> _______________________________________________
> >> detnet mailing list
> >> detnet@ietf.org
> >> https://www.ietf.org/mailman/listinfo/detnet
> >
> >
> > _______________________________________________
> > detnet mailing list
> > detnet@ietf.org
> > https://www.ietf.org/mailman/listinfo/detnet
>
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet
>

--047d7ba9728439d3af0540cd10a7
Content-Type: text/html; charset=UTF-8
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<p dir=3D"ltr">Dear all,<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 I wonder if you have included burstiness as a measure of the number of =
consecutive packet loss.<br>
Regards,</p>
<p dir=3D"ltr">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Diego<br>
</p>
<div class=3D"gmail_extra"><br><div class=3D"gmail_quote">El nov 8, 2016 1:=
33 PM, &quot;Bal=C3=A1zs Varga A&quot; &lt;<a href=3D"mailto:balazs.a.varga=
@ericsson.com">balazs.a.varga@ericsson.com</a>&gt; escribi=C3=B3:<br type=
=3D"attribution"><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8=
ex;border-left:1px #ccc solid;padding-left:1ex">Hi Norm,<br>
<br>
Agree the direction except one particular part, namely how you have defined=
 loss.<br>
&gt; ... At the very least, there are a range of loss rates for different t=
ime scales, that<br>
&gt; take MTTR into account.<br>
We should not couple loss and availability so tight via MTTR. It is more us=
ual to define<br>
service parameters as follows:<br>
- Loss rate: ratio of lost and forwarded packets when the service is availa=
ble.<br>
- Availability: when forwarding parameters (BW, delay, etc.) are meet.<br>
For example if you have a network outage then service is not available. Dur=
ing that<br>
period of time the loss rate is 100 percent. Furthermore operators usually =
extract<br>
some time periods (e.g. predefined maintenance time, etc.) when calculating=
<br>
availability.<br>
<br>
Therefore the application should require two set of parameters:<br>
- transport parameters (BW, delay, jitter, loss, etc.)<br>
- service parameters (availability, MTTR, etc.)<br>
<br>
Cheers<br>
Bala&#39;zs<br>
<br>
-----Original Message-----<br>
From: detnet [mailto:<a href=3D"mailto:detnet-bounces@ietf.org">detnet-boun=
ces@ietf.<wbr>org</a>] On Behalf Of Norman Finn<br>
Sent: Tuesday, November 08, 2016 3:57 PM<br>
To: Grossman, Ethan A. &lt;<a href=3D"mailto:eagros@dolby.com">eagros@dolby=
.com</a>&gt;<br>
Cc: <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a><br>
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app relia=
bility needs?<br>
<br>
Others have given good answers to this question.=C2=A0 Here=E2=80=99s my $0=
.02.<br>
<br>
My first thought (in an IEEE contribution a few years ago) was that an appl=
ication could specify its reliability requirement for a given flow, and the=
 network would meet it or say, =E2=80=9CNo.=E2=80=9D=C2=A0 And, ultimately,=
 that may be achievable.=C2=A0 But, not easily.<br>
<br>
For example =E2=80=94 does you application *really* know whether it needs 1=
0^-12 or 10^-13 loss rate?=C2=A0 Does the network *really* know whether it =
can deliver 10^-12 or 10^-13?<br>
<br>
I=E2=80=99m leaning, at this time, towards:<br>
<br>
=C2=A0 =E2=80=A2 The network operator defines some small number of classes =
of delivery reliability, based on number of paths, whether the paths have w=
ireless links, or whatever other variables are present in the network.=C2=
=A0 Note that these classes may have criteria other than simply, &quot;prob=
ability of loss&quot;.=C2=A0 At the very least, there are a range of loss r=
ates for different time scales, that take MTTR into account.<br>
<br>
=C2=A0 =E2=80=A2 The app owners decide which class of reliability is requir=
ed for each flow, and how to balance network reliability against applicatio=
n-level mitigation of failures.<br>
<br>
=C2=A0 =E2=80=A2 At run time, a reservation request includes a reliability =
class specifier.<br>
<br>
=C2=A0 =E2=80=A2 The app owners and network administrators have to find net=
work design, app design, and class structure that gives a cost-effective so=
lution to the overall problem.<br>
<br>
This is not dissimilar to the DiffServ situation.=C2=A0 We (DetNet) might o=
r might not be able to define some useful guidelines for reliability classe=
s that are widely applicable.<br>
<br>
Having this paradigm in mind might help us define useful ways to parameteri=
ze the problem.<br>
<br>
=E2=80=94 Norm<br>
<br>
&gt; On Nov 7, 2016, at 17:24, Grossman, Ethan A. &lt;<a href=3D"mailto:eag=
ros@dolby.com">eagros@dolby.com</a>&gt; wrote:<br>
&gt;<br>
&gt; In starting this thread I inadvertently included two topics - 1) expre=
ssing timing accuracy, and 2) expressing reliability, so I am spinning out =
the latter into this new thread.<br>
&gt;<br>
&gt; My question here is &quot;Is the reliability (e.g. number of 9&#39;s) =
a fixed property of the given DetNet, or is it something that can be config=
ured on a per-flow basis via an API?&quot;<br>
&gt; For example a DetNet might provide one redundant path, or two redundan=
t paths, resulting in two distinct levels of reliability, and that could be=
 be &quot;for all flows&quot; or on a &quot;per-flow&quot; basis.<br>
&gt; I would assume that the app should be able to query the network for th=
e reliability figure (or range, or options), then based on that, specify th=
e choice to the network for a given flow?<br>
&gt; Is there an existing API for that?<br>
&gt;<br>
&gt; Thanks,<br>
&gt; Ethan.<br>
&gt;<br>
&gt; ______________________________<wbr>__________<br>
&gt; From: nfinn &lt;<a href=3D"mailto:nfinn@alumni.caltech.edu">nfinn@alum=
ni.caltech.edu</a>&gt;<br>
&gt; Sent: Thursday, November 3, 2016 10:43 AM<br>
&gt; To: Patrick Wetterwald (pwetterw)<br>
&gt; Cc: Jouni Korhonen; Grossman, Ethan A.; Pascal Thubert;<br>
&gt; <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a>; Olivier Marce<=
br>
&gt; Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
time accuracy and reliability needs?<br>
&gt;<br>
&gt; Agreed!<br>
&gt;<br>
&gt; =E2=80=94 Norm<br>
&gt;<br>
&gt;&gt; On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) &lt;<a h=
ref=3D"mailto:pwetterw@cisco.com">pwetterw@cisco.com</a>&gt; wrote:<br>
&gt;&gt;<br>
&gt;&gt; Hi Norm,<br>
&gt;&gt;<br>
&gt;&gt; I agree that Detnet should not spend too much time on time synchro=
nization and time accuracy. I just wanted to express that if we want / need=
 to report time accuracy, the application is not the only one interested in=
 such information. In case of a PCE based Detnet, the PCE is one of the rec=
ipient of this information.<br>
&gt;&gt;<br>
&gt;&gt; Some applications may have their own time reference (based on GPS =
for instance).=C2=A0 What the application expects from a Detnet network is =
guarantee of delivery in a maximum latency with a bounded jitter and it dif=
fers to the PCE to handle all that is needed to ensure it.<br>
&gt;&gt;<br>
&gt;&gt; Does it make sense?<br>
&gt;&gt;<br>
&gt;&gt; Thanks,<br>
&gt;&gt;<br>
&gt;&gt; Patrick<br>
&gt;&gt;<br>
&gt;&gt; On 02/11/2016, 17:58, &quot;nfinn&quot; &lt;<a href=3D"mailto:nfin=
n@alumni.caltech.edu">nfinn@alumni.caltech.edu</a>&gt; wrote:<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0Patrick,<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0If you want to work on this approach, I don=E2=80=99t =
want to stop you.=C2=A0 But, it looks to me that it increases the number of=
 options (and thus, everyone=E2=80=99s work load) with no benefit gained.<b=
r>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0If the application has time requirements, I assume tha=
t it is able to synchronize its clock using one or more specific protocols,=
 and therefore knows how to interpret each of those protocols=E2=80=99 accu=
racy information.=C2=A0 Problem solved.=C2=A0 Teaching the application to a=
sk the PCE 1) requires that a PCE b e present, and 2) requires the applicat=
ion to implement a query/response of some kind to express its requirements =
and understand the answer.=C2=A0 Keep in mind that the answer is not always=
 =E2=80=9Cyes/no=E2=80=9D.=C2=A0 Perhaps the application can operate in dif=
ferent modes, depending on clock accuracy.<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0Of course, if you or any expert in the time protocols =
tell us that only a centralized controller can make the determination for a=
 significant class of use cases, I=E2=80=99m ready to change my mind.<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0=E2=80=94 Norm<br>
&gt;&gt;<br>
&gt;&gt;&gt; On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) &lt;=
<a href=3D"mailto:pwetterw@cisco.com">pwetterw@cisco.com</a>&gt; wrote:<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; I=E2=80=99m just wondering if this has to be reported to the a=
pplication or to the PCE in case of central computing?<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; Application asks for the accuracy then the PCE answers if this=
 is possible or not.<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; We may have both cases.<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; Thanks,<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; Patrick<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; On 02/11/2016, 16:43, &quot;detnet on behalf of Jouni Korhonen=
&quot; &lt;<a href=3D"mailto:detnet-bounces@ietf.org">detnet-bounces@ietf.o=
rg</a> on behalf of <a href=3D"mailto:jouni.korhonen@broadcom.com">jouni.ko=
rhonen@broadcom.com</a>&gt; wrote:<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;=C2=A0 looks good to me.<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;=C2=A0 - jouni<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt; On Oct 31, 2016, at 11:59 PM, nfinn &lt;<a href=3D"mailto:=
nfinn@alumni.caltech.edu">nfinn@alumni.caltech.edu</a>&gt; wrote:<br>
&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt; I think that=E2=80=99s a very good summary of my preferred=
 approach.=C2=A0 Is it satisfactory for you?<br>
&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt; =E2=80=94 Norm<br>
&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. &lt;<a=
 href=3D"mailto:eagros@dolby.com">eagros@dolby.com</a>&gt; wrote:<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Hi Pascal, Olivier, Norm, WG,<br>
&gt;&gt;&gt;&gt;&gt; So the consensus is, to paraphrase Norm:<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; 1) Make sure that the time protocols are able to repor=
t, along with the time, the accuracy provided.<br>
&gt;&gt;&gt;&gt;&gt; 2) The application will decide whether that is suffici=
ent.<br>
&gt;&gt;&gt;&gt;&gt; 3) The accuracy reported will likely consist of severa=
l parameters (frequency accuracy, absolute accuracy, etc.).<br>
&gt;&gt;&gt;&gt;&gt; 4) Different time protocols may have different paramet=
ers for accuracy.<br>
&gt;&gt;&gt;&gt;&gt; 5) An application might care about one or more of thos=
e parameters.<br>
&gt;&gt;&gt;&gt;&gt; 6) An application might then operate in one of various=
 modes, depending on the accuracy provided.<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; If anyone has any other understanding or input, please=
 reply.<br>
&gt;&gt;&gt;&gt;&gt; Thanks,<br>
&gt;&gt;&gt;&gt;&gt; Ethan.<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; -----Original Message-----<br>
&gt;&gt;&gt;&gt;&gt; From: detnet [mailto:<a href=3D"mailto:detnet-bounces@=
ietf.org">detnet-bounces@ietf.<wbr>org</a>] On Behalf Of Pascal<br>
&gt;&gt;&gt;&gt;&gt; Thubert (pthubert)<br>
&gt;&gt;&gt;&gt;&gt; Sent: Tuesday, October 11, 2016 4:29 AM<br>
&gt;&gt;&gt;&gt;&gt; To: Olivier Marce; <a href=3D"mailto:detnet@ietf.org">=
detnet@ietf.org</a><br>
&gt;&gt;&gt;&gt;&gt; Subject: Re: [Detnet] DetNet Use Case Statements - How=
 to express app time accuracy and reliability needs?<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; This is my understanding too, Olivier.<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Also, time-related work is done elsewhere, whether one=
 thinks of IETF or outside the IETF. We do not want to be taken in the midd=
le of that storm.<br>
&gt;&gt;&gt;&gt;&gt; Best can do is probably state requirements, but for al=
l I know we are using time as an information provided by external means, as=
 opposed to managing it.<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Cheers,<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Pascal<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; -----Original Message-----<br>
&gt;&gt;&gt;&gt;&gt; From: detnet [mailto:<a href=3D"mailto:detnet-bounces@=
ietf.org">detnet-bounces@ietf.<wbr>org</a>] On Behalf Of Olivier<br>
&gt;&gt;&gt;&gt;&gt; Marce<br>
&gt;&gt;&gt;&gt;&gt; Sent: jeudi 6 octobre 2016 12:05<br>
&gt;&gt;&gt;&gt;&gt; To: <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org=
</a><br>
&gt;&gt;&gt;&gt;&gt; Subject: Re: [Detnet] DetNet Use Case Statements - How=
 to express app time accuracy and reliability needs?<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Hi,<br>
&gt;&gt;&gt;&gt;&gt; I&#39;m in favor of Norm&#39; position: DetNet should =
concentrate on=C2=A0 reliable, on-time delivery of packets. Time accuracy i=
s required for DetNet but out of scope, as many solutions exist and is not =
only a networking topic.<br>
&gt;&gt;&gt;&gt;&gt; At most, DetNet could provide some reference examples =
on how providing required time accuracy.<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Regards<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :<br>
&gt;&gt;&gt;&gt;&gt;&gt; Interesting question.<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; It seems more useful to me to make sure that the t=
ime protocols<br>
&gt;&gt;&gt;&gt;&gt;&gt; are able to report, along with the time, the accur=
acy provided.<br>
&gt;&gt;&gt;&gt;&gt;&gt; The application can then decide whether that is su=
fficient.=C2=A0 The<br>
&gt;&gt;&gt;&gt;&gt;&gt; accuracy reported will likely consist of several p=
arameters<br>
&gt;&gt;&gt;&gt;&gt;&gt; (frequency accuracy, absolute accuracy, etc.).=C2=
=A0 Different time<br>
&gt;&gt;&gt;&gt;&gt;&gt; protocols may have different parameters for accura=
cy.=C2=A0 The<br>
&gt;&gt;&gt;&gt;&gt;&gt; application might worried about one or the other o=
f those<br>
&gt;&gt;&gt;&gt;&gt;&gt; parameters.=C2=A0 It might operate in different mo=
des, depending on<br>
&gt;&gt;&gt;&gt;&gt;&gt; the accuracy provided.=C2=A0 I don&#39;t see the v=
alue in moving the decision point anywhere else.<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; With DetNet, one can imagine a bandwidth reservati=
on crossing a<br>
&gt;&gt;&gt;&gt;&gt;&gt; boundary between two different master clock domain=
s.=C2=A0 My<br>
&gt;&gt;&gt;&gt;&gt;&gt; inclination would be to disallow that, at least fo=
r now.=C2=A0 Given<br>
&gt;&gt;&gt;&gt;&gt;&gt; an application that runs for long enough, any freq=
uency<br>
&gt;&gt;&gt;&gt;&gt;&gt; difference between source and sink will eventually=
 cause starvation or overflow.<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; All that said, let&#39;s suppose that you have a s=
olid use case that<br>
&gt;&gt;&gt;&gt;&gt;&gt; is expected to *try* to run across clock domain bo=
undaries, and<br>
&gt;&gt;&gt;&gt;&gt;&gt; we want to prevent that when it won&#39;t work.=C2=
=A0 This could be solved<br>
&gt;&gt;&gt;&gt;&gt;&gt; by an application-level protocol that exchanges cl=
ock domain information.<br>
&gt;&gt;&gt;&gt;&gt;&gt; This could be solved by configuring the network co=
ntroller to<br>
&gt;&gt;&gt;&gt;&gt;&gt; disallow domain crossings.=C2=A0 This could be han=
dled by parameters<br>
&gt;&gt;&gt;&gt;&gt;&gt; in the reservation protocol, as you suggest, so th=
at the<br>
&gt;&gt;&gt;&gt;&gt;&gt; controller can allow some reservations but not oth=
ers.=C2=A0 I&#39;ll<br>
&gt;&gt;&gt;&gt;&gt;&gt; leave it to timing experts to pick some number of =
appropriate parameters.<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; One last consideration - Are you sure that all app=
lications that<br>
&gt;&gt;&gt;&gt;&gt;&gt; have these timing requirements also require bandwi=
dth<br>
&gt;&gt;&gt;&gt;&gt;&gt; reservations?=C2=A0 I&#39;m not sure of that.=C2=
=A0 And, if not, a protocol<br>
&gt;&gt;&gt;&gt;&gt;&gt; separate from the bandwidth reservation might be i=
ndicated.<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; - Norm<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A.=
 &lt;<a href=3D"mailto:eagros@dolby.com">eagros@dolby.com</a><br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; &lt;mailto:<a href=3D"mailto:eagros@dolby.com"=
>eagros@dolby.com</a>&gt;&gt; wrote:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Hi Folks,<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; As of our IETF 96 meeting there were still a c=
ouple of Use Case<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Statements that I would like clarity on. Here&=
#39;s the first,<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; remaining to follow in separate emails.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Question:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; How will an application express its time accur=
acy and<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability needs? Is that within scope of Det=
Net?<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Discussion:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; In AVB/TSN when an application (talker) attemp=
ts to make a<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; stream reservation it must state how much band=
width that stream<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reservation requires. Presumably in a LAN this=
 is sufficient<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; since a LAN presumably has consistent time acc=
uracy and reliability metrics.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; For DetNet, in which we support interconnected=
 DetNet networks<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; and have widely varying requirements for timin=
g accuracy and<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability depending on the use case, it appe=
ars to me that we<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; need to allow an application to provide this k=
ind of information<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; to the network, and a way for the network to e=
ither agree or<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; decline to provide the requested service (anal=
ogous to AVB/TSN<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; accepting or declining a stream reservation ba=
sed on the bandwidth requested).<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; We have had some discussion about this (see be=
low) but nothing<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; near consensus. Other thoughts from anyone?<br=
>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Ethan.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; ------------------------------<wbr>-- Discussi=
on, oldest item first:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Ethan Grossman wrote:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Timekeeping - the only explicit DetNet Ask for=
 this is in the<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; use cases is in M2M as &quot;Precise time sync=
hronization accuracy<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; (1us)&quot; and I think the intent (as in othe=
r use cases) is that<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; the DetNet Ask is for a way to specify the req=
uired accuracy, not how to achieve that accuracy.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Norm Finn wrote:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Timekeeping is an essential part of many, prob=
ably most, of the<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; applications that also find DetNet useful.=C2=
=A0 That having been<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; said, so is protection against EMI and electri=
cal power saving.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Let&#39;s concentrate DetNet on reliable, on-t=
ime delivery of<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; packets.=C2=A0 I&#39;m not even sure that &quo=
t;a way to specify the required accuracy&quot; need be in scope.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Rodney Cummings wrote:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; I rarely disagree with Norm, but on this point=
 I&#39;ll have to quibble a bit.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; I agree that we don&#39;t need DetNet to speci=
fy how time sync is<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; accomplished. There are plenty of IEEE 1588 te=
chniques (and<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; similar) for that purpose.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; I also agree that we should concentrate on rel=
iable, on-time<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; delivery of packets (i.e. worst-case latency).=
<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; If I don&#39;t know how accurate my time sync =
is, then how do I know<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; when a packet is delivered on time? If I don&#=
39;t know the<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability of my time sync, how can I reliabl=
y measure that packet delivery?<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Almost all (if not 100%) of DetNet use cases r=
equire time sync<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; at the end systems to some degree of accuracy.=
 I agree that we<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; don&#39;t need to address the implementation o=
f that time sync, but<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; the application requirements are needed for ti=
me sync (including<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability) just as much as for packet delive=
ry.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; ------------------------------<wbr>--<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; ______________________________<wbr>___________=
______<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org">detnet@ietf=
.org</a> &lt;mailto:<a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a>&=
gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listin=
fo/detnet" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailma=
n/<wbr>listinfo/detnet</a><br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; ______________________________<wbr>_______________=
__<br>
&gt;&gt;&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org=
</a><br>
&gt;&gt;&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/d=
etnet" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/<w=
br>listinfo/detnet</a><br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; --<br>
&gt;&gt;&gt;&gt;&gt; Olivier Marc=C3=A9<br>
&gt;&gt;&gt;&gt;&gt; Nokia Bell Labs France<br>
&gt;&gt;&gt;&gt;&gt; &quot;we need to guard against increased levels of rep=
orting and other<br>
&gt;&gt;&gt;&gt;&gt; requirements that distract you from doing what you rea=
lly need to<br>
&gt;&gt;&gt;&gt;&gt; be doing.&quot; Rajeev Suri, Nokia CEO, April 2016<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; ______________________________<wbr>_________________<b=
r>
&gt;&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a>=
<br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detne=
t" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/<wbr>l=
istinfo/detnet</a><br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; ______________________________<wbr>_________________<b=
r>
&gt;&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a>=
<br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detne=
t" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/<wbr>l=
istinfo/detnet</a><br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; ______________________________<wbr>_________________<b=
r>
&gt;&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a>=
<br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detne=
t" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/<wbr>l=
istinfo/detnet</a><br>
&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt; ______________________________<wbr>_________________<br>
&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a><br>
&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" r=
el=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/<wbr>listi=
nfo/detnet</a><br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;=C2=A0 --<br>
&gt;&gt;&gt;=C2=A0 Jouni Korhonen, Broadcom Ltd.<br>
&gt;&gt;&gt;=C2=A0 M: <a href=3D"tel:%2B1-408-391-7160" value=3D"+140839171=
60">+1-408-391-7160</a><br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;=C2=A0 ______________________________<wbr>_________________<br>
&gt;&gt;&gt;=C2=A0 detnet mailing list<br>
&gt;&gt;&gt;=C2=A0 <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a><b=
r>
&gt;&gt;&gt;=C2=A0 <a href=3D"https://www.ietf.org/mailman/listinfo/detnet"=
 rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/<wbr>lis=
tinfo/detnet</a><br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; ______________________________<wbr>_________________<br>
&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a><br>
&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=
=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinf=
o/detnet</a><br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; ______________________________<wbr>_________________<br>
&gt;&gt; detnet mailing list<br>
&gt;&gt; <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a><br>
&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"no=
referrer" target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/detn=
et</a><br>
&gt;<br>
&gt;<br>
&gt; ______________________________<wbr>_________________<br>
&gt; detnet mailing list<br>
&gt; <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a><br>
&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"norefe=
rrer" target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/detnet</=
a><br>
<br>
______________________________<wbr>_________________<br>
detnet mailing list<br>
<a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/detnet</a><br=
>
______________________________<wbr>_________________<br>
detnet mailing list<br>
<a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/detnet</a><br=
>
</blockquote></div></div>

--047d7ba9728439d3af0540cd10a7--


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From: Norman Finn <nfinn@alumni.caltech.edu>
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Cc: "Grossman, Ethan A." <eagros@dolby.com>, "detnet@ietf.org" <detnet@ietf.org>
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app reliability needs?
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Yours sounds like a more useful way to characterize the requirements.

=E2=80=94 Norm

> On Nov 8, 2016, at 10:33, Bal=C3=A1zs Varga A =
<balazs.a.varga@ericsson.com> wrote:
>=20
> Hi Norm,
>=20
> Agree the direction except one particular part, namely how you have =
defined loss.
>> ... At the very least, there are a range of loss rates for different =
time scales, that=20
>> take MTTR into account.
> We should not couple loss and availability so tight via MTTR. It is =
more usual to define=20
> service parameters as follows:
> - Loss rate: ratio of lost and forwarded packets when the service is =
available.=20
> - Availability: when forwarding parameters (BW, delay, etc.) are meet.=20=

> For example if you have a network outage then service is not =
available. During that
> period of time the loss rate is 100 percent. Furthermore operators =
usually extract=20
> some time periods (e.g. predefined maintenance time, etc.) when =
calculating=20
> availability.
>=20
> Therefore the application should require two set of parameters:
> - transport parameters (BW, delay, jitter, loss, etc.)
> - service parameters (availability, MTTR, etc.)
>=20
> Cheers
> Bala'zs
>=20
> -----Original Message-----
> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Norman Finn
> Sent: Tuesday, November 08, 2016 3:57 PM
> To: Grossman, Ethan A. <eagros@dolby.com>
> Cc: detnet@ietf.org
> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
reliability needs?
>=20
> Others have given good answers to this question.  Here=E2=80=99s my =
$0.02.
>=20
> My first thought (in an IEEE contribution a few years ago) was that an =
application could specify its reliability requirement for a given flow, =
and the network would meet it or say, =E2=80=9CNo.=E2=80=9D  And, =
ultimately, that may be achievable.  But, not easily.
>=20
> For example =E2=80=94 does you application *really* know whether it =
needs 10^-12 or 10^-13 loss rate?  Does the network *really* know =
whether it can deliver 10^-12 or 10^-13? =20
>=20
> I=E2=80=99m leaning, at this time, towards:
>=20
>  =E2=80=A2 The network operator defines some small number of classes =
of delivery reliability, based on number of paths, whether the paths =
have wireless links, or whatever other variables are present in the =
network.  Note that these classes may have criteria other than simply, =
"probability of loss".  At the very least, there are a range of loss =
rates for different time scales, that take MTTR into account.
>=20
>  =E2=80=A2 The app owners decide which class of reliability is =
required for each flow, and how to balance network reliability against =
application-level mitigation of failures.
>=20
>  =E2=80=A2 At run time, a reservation request includes a reliability =
class specifier.
>=20
>  =E2=80=A2 The app owners and network administrators have to find =
network design, app design, and class structure that gives a =
cost-effective solution to the overall problem.
>=20
> This is not dissimilar to the DiffServ situation.  We (DetNet) might =
or might not be able to define some useful guidelines for reliability =
classes that are widely applicable.
>=20
> Having this paradigm in mind might help us define useful ways to =
parameterize the problem.
>=20
> =E2=80=94 Norm
>=20
>> On Nov 7, 2016, at 17:24, Grossman, Ethan A. <eagros@dolby.com> =
wrote:
>>=20
>> In starting this thread I inadvertently included two topics - 1) =
expressing timing accuracy, and 2) expressing reliability, so I am =
spinning out the latter into this new thread. =20
>>=20
>> My question here is "Is the reliability (e.g. number of 9's) a fixed =
property of the given DetNet, or is it something that can be configured =
on a per-flow basis via an API?" =20
>> For example a DetNet might provide one redundant path, or two =
redundant paths, resulting in two distinct levels of reliability, and =
that could be be "for all flows" or on a "per-flow" basis.=20
>> I would assume that the app should be able to query the network for =
the reliability figure (or range, or options), then based on that, =
specify the choice to the network for a given flow?=20
>> Is there an existing API for that?=20
>>=20
>> Thanks,
>> Ethan.
>>=20
>> ________________________________________
>> From: nfinn <nfinn@alumni.caltech.edu>
>> Sent: Thursday, November 3, 2016 10:43 AM
>> To: Patrick Wetterwald (pwetterw)
>> Cc: Jouni Korhonen; Grossman, Ethan A.; Pascal Thubert;=20
>> detnet@ietf.org; Olivier Marce
>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
time accuracy and reliability needs?
>>=20
>> Agreed!
>>=20
>> =E2=80=94 Norm
>>=20
>>> On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) =
<pwetterw@cisco.com> wrote:
>>>=20
>>> Hi Norm,
>>>=20
>>> I agree that Detnet should not spend too much time on time =
synchronization and time accuracy. I just wanted to express that if we =
want / need to report time accuracy, the application is not the only one =
interested in such information. In case of a PCE based Detnet, the PCE =
is one of the recipient of this information.
>>>=20
>>> Some applications may have their own time reference (based on GPS =
for instance).  What the application expects from a Detnet network is =
guarantee of delivery in a maximum latency with a bounded jitter and it =
differs to the PCE to handle all that is needed to ensure it.
>>>=20
>>> Does it make sense?
>>>=20
>>> Thanks,
>>>=20
>>> Patrick
>>>=20
>>> On 02/11/2016, 17:58, "nfinn" <nfinn@alumni.caltech.edu> wrote:
>>>=20
>>>  Patrick,
>>>=20
>>>  If you want to work on this approach, I don=E2=80=99t want to stop =
you.  But, it looks to me that it increases the number of options (and =
thus, everyone=E2=80=99s work load) with no benefit gained.
>>>=20
>>>  If the application has time requirements, I assume that it is able =
to synchronize its clock using one or more specific protocols, and =
therefore knows how to interpret each of those protocols=E2=80=99 =
accuracy information.  Problem solved.  Teaching the application to ask =
the PCE 1) requires that a PCE b e present, and 2) requires the =
application to implement a query/response of some kind to express its =
requirements and understand the answer.  Keep in mind that the answer is =
not always =E2=80=9Cyes/no=E2=80=9D.  Perhaps the application can =
operate in different modes, depending on clock accuracy.
>>>=20
>>>  Of course, if you or any expert in the time protocols tell us that =
only a centralized controller can make the determination for a =
significant class of use cases, I=E2=80=99m ready to change my mind.
>>>=20
>>>  =E2=80=94 Norm
>>>=20
>>>> On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) =
<pwetterw@cisco.com> wrote:
>>>>=20
>>>> I=E2=80=99m just wondering if this has to be reported to the =
application or to the PCE in case of central computing?
>>>>=20
>>>> Application asks for the accuracy then the PCE answers if this is =
possible or not.
>>>>=20
>>>> We may have both cases.
>>>>=20
>>>> Thanks,
>>>>=20
>>>> Patrick
>>>>=20
>>>> On 02/11/2016, 16:43, "detnet on behalf of Jouni Korhonen" =
<detnet-bounces@ietf.org on behalf of jouni.korhonen@broadcom.com> =
wrote:
>>>>=20
>>>> looks good to me.
>>>>=20
>>>> - jouni
>>>>=20
>>>>> On Oct 31, 2016, at 11:59 PM, nfinn <nfinn@alumni.caltech.edu> =
wrote:
>>>>>=20
>>>>> I think that=E2=80=99s a very good summary of my preferred =
approach.  Is it satisfactory for you?
>>>>>=20
>>>>> =E2=80=94 Norm
>>>>>=20
>>>>>> On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. =
<eagros@dolby.com> wrote:
>>>>>>=20
>>>>>> Hi Pascal, Olivier, Norm, WG,
>>>>>> So the consensus is, to paraphrase Norm:
>>>>>>=20
>>>>>> 1) Make sure that the time protocols are able to report, along =
with the time, the accuracy provided.
>>>>>> 2) The application will decide whether that is sufficient.
>>>>>> 3) The accuracy reported will likely consist of several =
parameters (frequency accuracy, absolute accuracy, etc.).
>>>>>> 4) Different time protocols may have different parameters for =
accuracy.
>>>>>> 5) An application might care about one or more of those =
parameters.
>>>>>> 6) An application might then operate in one of various modes, =
depending on the accuracy provided.
>>>>>>=20
>>>>>> If anyone has any other understanding or input, please reply.
>>>>>> Thanks,
>>>>>> Ethan.
>>>>>>=20
>>>>>> -----Original Message-----
>>>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Pascal=20=

>>>>>> Thubert (pthubert)
>>>>>> Sent: Tuesday, October 11, 2016 4:29 AM
>>>>>> To: Olivier Marce; detnet@ietf.org
>>>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?
>>>>>>=20
>>>>>> This is my understanding too, Olivier.
>>>>>>=20
>>>>>> Also, time-related work is done elsewhere, whether one thinks of =
IETF or outside the IETF. We do not want to be taken in the middle of =
that storm.
>>>>>> Best can do is probably state requirements, but for all I know we =
are using time as an information provided by external means, as opposed =
to managing it.
>>>>>>=20
>>>>>> Cheers,
>>>>>>=20
>>>>>> Pascal
>>>>>>=20
>>>>>> -----Original Message-----
>>>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of =
Olivier=20
>>>>>> Marce
>>>>>> Sent: jeudi 6 octobre 2016 12:05
>>>>>> To: detnet@ietf.org
>>>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?
>>>>>>=20
>>>>>> Hi,
>>>>>> I'm in favor of Norm' position: DetNet should concentrate on  =
reliable, on-time delivery of packets. Time accuracy is required for =
DetNet but out of scope, as many solutions exist and is not only a =
networking topic.
>>>>>> At most, DetNet could provide some reference examples on how =
providing required time accuracy.
>>>>>>=20
>>>>>>=20
>>>>>> Regards
>>>>>>=20
>>>>>> Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :
>>>>>>> Interesting question.
>>>>>>>=20
>>>>>>> It seems more useful to me to make sure that the time protocols=20=

>>>>>>> are able to report, along with the time, the accuracy provided. =20=

>>>>>>> The application can then decide whether that is sufficient.  The=20=

>>>>>>> accuracy reported will likely consist of several parameters=20
>>>>>>> (frequency accuracy, absolute accuracy, etc.).  Different time=20=

>>>>>>> protocols may have different parameters for accuracy.  The=20
>>>>>>> application might worried about one or the other of those=20
>>>>>>> parameters.  It might operate in different modes, depending on=20=

>>>>>>> the accuracy provided.  I don't see the value in moving the =
decision point anywhere else.
>>>>>>>=20
>>>>>>> With DetNet, one can imagine a bandwidth reservation crossing a=20=

>>>>>>> boundary between two different master clock domains.  My=20
>>>>>>> inclination would be to disallow that, at least for now.  Given=20=

>>>>>>> an application that runs for long enough, any frequency=20
>>>>>>> difference between source and sink will eventually cause =
starvation or overflow.
>>>>>>>=20
>>>>>>> All that said, let's suppose that you have a solid use case that=20=

>>>>>>> is expected to *try* to run across clock domain boundaries, and=20=

>>>>>>> we want to prevent that when it won't work.  This could be =
solved=20
>>>>>>> by an application-level protocol that exchanges clock domain =
information.
>>>>>>> This could be solved by configuring the network controller to=20
>>>>>>> disallow domain crossings.  This could be handled by parameters=20=

>>>>>>> in the reservation protocol, as you suggest, so that the=20
>>>>>>> controller can allow some reservations but not others.  I'll=20
>>>>>>> leave it to timing experts to pick some number of appropriate =
parameters.
>>>>>>>=20
>>>>>>> One last consideration - Are you sure that all applications that=20=

>>>>>>> have these timing requirements also require bandwidth=20
>>>>>>> reservations?  I'm not sure of that.  And, if not, a protocol=20
>>>>>>> separate from the bandwidth reservation might be indicated.
>>>>>>>=20
>>>>>>> - Norm
>>>>>>>=20
>>>>>>>> On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A. =
<eagros@dolby.com=20
>>>>>>>> <mailto:eagros@dolby.com>> wrote:
>>>>>>>>=20
>>>>>>>> Hi Folks,
>>>>>>>>=20
>>>>>>>> As of our IETF 96 meeting there were still a couple of Use Case=20=

>>>>>>>> Statements that I would like clarity on. Here's the first,=20
>>>>>>>> remaining to follow in separate emails.
>>>>>>>>=20
>>>>>>>> Question:
>>>>>>>> How will an application express its time accuracy and=20
>>>>>>>> reliability needs? Is that within scope of DetNet?
>>>>>>>>=20
>>>>>>>> Discussion:
>>>>>>>> In AVB/TSN when an application (talker) attempts to make a=20
>>>>>>>> stream reservation it must state how much bandwidth that stream=20=

>>>>>>>> reservation requires. Presumably in a LAN this is sufficient=20
>>>>>>>> since a LAN presumably has consistent time accuracy and =
reliability metrics.
>>>>>>>>=20
>>>>>>>> For DetNet, in which we support interconnected DetNet networks=20=

>>>>>>>> and have widely varying requirements for timing accuracy and=20
>>>>>>>> reliability depending on the use case, it appears to me that we=20=

>>>>>>>> need to allow an application to provide this kind of =
information=20
>>>>>>>> to the network, and a way for the network to either agree or=20
>>>>>>>> decline to provide the requested service (analogous to AVB/TSN=20=

>>>>>>>> accepting or declining a stream reservation based on the =
bandwidth requested).
>>>>>>>>=20
>>>>>>>> We have had some discussion about this (see below) but nothing=20=

>>>>>>>> near consensus. Other thoughts from anyone?
>>>>>>>> Ethan.
>>>>>>>>=20
>>>>>>>> -------------------------------- Discussion, oldest item first:
>>>>>>>>=20
>>>>>>>> Ethan Grossman wrote:
>>>>>>>> Timekeeping - the only explicit DetNet Ask for this is in the=20=

>>>>>>>> use cases is in M2M as "Precise time synchronization accuracy=20=

>>>>>>>> (1us)" and I think the intent (as in other use cases) is that=20=

>>>>>>>> the DetNet Ask is for a way to specify the required accuracy, =
not how to achieve that accuracy.
>>>>>>>>=20
>>>>>>>> Norm Finn wrote:
>>>>>>>> Timekeeping is an essential part of many, probably most, of the=20=

>>>>>>>> applications that also find DetNet useful.  That having been=20
>>>>>>>> said, so is protection against EMI and electrical power saving.=20=

>>>>>>>> Let's concentrate DetNet on reliable, on-time delivery of=20
>>>>>>>> packets.  I'm not even sure that "a way to specify the required =
accuracy" need be in scope.
>>>>>>>>=20
>>>>>>>> Rodney Cummings wrote:
>>>>>>>> I rarely disagree with Norm, but on this point I'll have to =
quibble a bit.
>>>>>>>> I agree that we don't need DetNet to specify how time sync is=20=

>>>>>>>> accomplished. There are plenty of IEEE 1588 techniques (and=20
>>>>>>>> similar) for that purpose.
>>>>>>>> I also agree that we should concentrate on reliable, on-time=20
>>>>>>>> delivery of packets (i.e. worst-case latency).
>>>>>>>> If I don't know how accurate my time sync is, then how do I =
know=20
>>>>>>>> when a packet is delivered on time? If I don't know the=20
>>>>>>>> reliability of my time sync, how can I reliably measure that =
packet delivery?
>>>>>>>> Almost all (if not 100%) of DetNet use cases require time sync=20=

>>>>>>>> at the end systems to some degree of accuracy. I agree that we=20=

>>>>>>>> don't need to address the implementation of that time sync, but=20=

>>>>>>>> the application requirements are needed for time sync =
(including=20
>>>>>>>> reliability) just as much as for packet delivery.
>>>>>>>> --------------------------------
>>>>>>>>=20
>>>>>>>> _______________________________________________
>>>>>>>> detnet mailing list
>>>>>>>> detnet@ietf.org <mailto:detnet@ietf.org>=20
>>>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>>>=20
>>>>>>>=20
>>>>>>>=20
>>>>>>> _______________________________________________
>>>>>>> detnet mailing list
>>>>>>> detnet@ietf.org
>>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>>>=20
>>>>>>=20
>>>>>> --
>>>>>> Olivier Marc=C3=A9
>>>>>> Nokia Bell Labs France
>>>>>> "we need to guard against increased levels of reporting and other=20=

>>>>>> requirements that distract you from doing what you really need to=20=

>>>>>> be doing." Rajeev Suri, Nokia CEO, April 2016
>>>>>>=20
>>>>>> _______________________________________________
>>>>>> detnet mailing list
>>>>>> detnet@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>>=20
>>>>>> _______________________________________________
>>>>>> detnet mailing list
>>>>>> detnet@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>>=20
>>>>>> _______________________________________________
>>>>>> detnet mailing list
>>>>>> detnet@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>>=20
>>>>> _______________________________________________
>>>>> detnet mailing list
>>>>> detnet@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>=20
>>>> --
>>>> Jouni Korhonen, Broadcom Ltd.
>>>> M: +1-408-391-7160
>>>>=20
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>>=20
>>>>=20
>>>> _______________________________________________
>>>> detnet mailing list
>>>> detnet@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/detnet
>>>=20
>>>=20
>>>=20
>>> _______________________________________________
>>> detnet mailing list
>>> detnet@ietf.org
>>> https://www.ietf.org/mailman/listinfo/detnet
>>=20
>>=20
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
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To: "Prof. Diego Dujovne" <diego.dujovne@mail.udp.cl>
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Subject: Re: [Detnet] DetNet Use Case Statements - How to express app reliability needs?
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Good question, Diego.  I think that Bal=C3=A1zs=E2=80=99s availability / =
loss rate does, in effect, give that, doesn=E2=80=99t it?  A burst of =
errors would, presumably, be counted as a loss of availability.  Or, =
were you thinking of something more complex?

=E2=80=94 Norm
=20
> On Nov 8, 2016, at 10:59, Prof. Diego Dujovne =
<diego.dujovne@mail.udp.cl> wrote:
>=20
> Dear all,
>               I wonder if you have included burstiness as a measure of =
the number of consecutive packet loss.
> Regards,
>=20
>          Diego
>=20
> El nov 8, 2016 1:33 PM, "Bal=C3=A1zs Varga A" =
<balazs.a.varga@ericsson.com <mailto:balazs.a.varga@ericsson.com>> =
escribi=C3=B3:
> Hi Norm,
>=20
> Agree the direction except one particular part, namely how you have =
defined loss.
> > ... At the very least, there are a range of loss rates for different =
time scales, that
> > take MTTR into account.
> We should not couple loss and availability so tight via MTTR. It is =
more usual to define
> service parameters as follows:
> - Loss rate: ratio of lost and forwarded packets when the service is =
available.
> - Availability: when forwarding parameters (BW, delay, etc.) are meet.
> For example if you have a network outage then service is not =
available. During that
> period of time the loss rate is 100 percent. Furthermore operators =
usually extract
> some time periods (e.g. predefined maintenance time, etc.) when =
calculating
> availability.
>=20
> Therefore the application should require two set of parameters:
> - transport parameters (BW, delay, jitter, loss, etc.)
> - service parameters (availability, MTTR, etc.)
>=20
> Cheers
> Bala'zs
>=20
> -----Original Message-----
> From: detnet [mailto:detnet-bounces@ietf.org =
<mailto:detnet-bounces@ietf.org>] On Behalf Of Norman Finn
> Sent: Tuesday, November 08, 2016 3:57 PM
> To: Grossman, Ethan A. <eagros@dolby.com <mailto:eagros@dolby.com>>
> Cc: detnet@ietf.org <mailto:detnet@ietf.org>
> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
reliability needs?
>=20
> Others have given good answers to this question.  Here=E2=80=99s my =
$0.02.
>=20
> My first thought (in an IEEE contribution a few years ago) was that an =
application could specify its reliability requirement for a given flow, =
and the network would meet it or say, =E2=80=9CNo.=E2=80=9D  And, =
ultimately, that may be achievable.  But, not easily.
>=20
> For example =E2=80=94 does you application *really* know whether it =
needs 10^-12 or 10^-13 loss rate?  Does the network *really* know =
whether it can deliver 10^-12 or 10^-13?
>=20
> I=E2=80=99m leaning, at this time, towards:
>=20
>   =E2=80=A2 The network operator defines some small number of classes =
of delivery reliability, based on number of paths, whether the paths =
have wireless links, or whatever other variables are present in the =
network.  Note that these classes may have criteria other than simply, =
"probability of loss".  At the very least, there are a range of loss =
rates for different time scales, that take MTTR into account.
>=20
>   =E2=80=A2 The app owners decide which class of reliability is =
required for each flow, and how to balance network reliability against =
application-level mitigation of failures.
>=20
>   =E2=80=A2 At run time, a reservation request includes a reliability =
class specifier.
>=20
>   =E2=80=A2 The app owners and network administrators have to find =
network design, app design, and class structure that gives a =
cost-effective solution to the overall problem.
>=20
> This is not dissimilar to the DiffServ situation.  We (DetNet) might =
or might not be able to define some useful guidelines for reliability =
classes that are widely applicable.
>=20
> Having this paradigm in mind might help us define useful ways to =
parameterize the problem.
>=20
> =E2=80=94 Norm
>=20
> > On Nov 7, 2016, at 17:24, Grossman, Ethan A. <eagros@dolby.com =
<mailto:eagros@dolby.com>> wrote:
> >
> > In starting this thread I inadvertently included two topics - 1) =
expressing timing accuracy, and 2) expressing reliability, so I am =
spinning out the latter into this new thread.
> >
> > My question here is "Is the reliability (e.g. number of 9's) a fixed =
property of the given DetNet, or is it something that can be configured =
on a per-flow basis via an API?"
> > For example a DetNet might provide one redundant path, or two =
redundant paths, resulting in two distinct levels of reliability, and =
that could be be "for all flows" or on a "per-flow" basis.
> > I would assume that the app should be able to query the network for =
the reliability figure (or range, or options), then based on that, =
specify the choice to the network for a given flow?
> > Is there an existing API for that?
> >
> > Thanks,
> > Ethan.
> >
> > ________________________________________
> > From: nfinn <nfinn@alumni.caltech.edu =
<mailto:nfinn@alumni.caltech.edu>>
> > Sent: Thursday, November 3, 2016 10:43 AM
> > To: Patrick Wetterwald (pwetterw)
> > Cc: Jouni Korhonen; Grossman, Ethan A.; Pascal Thubert;
> > detnet@ietf.org <mailto:detnet@ietf.org>; Olivier Marce
> > Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?
> >
> > Agreed!
> >
> > =E2=80=94 Norm
> >
> >> On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) =
<pwetterw@cisco.com <mailto:pwetterw@cisco.com>> wrote:
> >>
> >> Hi Norm,
> >>
> >> I agree that Detnet should not spend too much time on time =
synchronization and time accuracy. I just wanted to express that if we =
want / need to report time accuracy, the application is not the only one =
interested in such information. In case of a PCE based Detnet, the PCE =
is one of the recipient of this information.
> >>
> >> Some applications may have their own time reference (based on GPS =
for instance).  What the application expects from a Detnet network is =
guarantee of delivery in a maximum latency with a bounded jitter and it =
differs to the PCE to handle all that is needed to ensure it.
> >>
> >> Does it make sense?
> >>
> >> Thanks,
> >>
> >> Patrick
> >>
> >> On 02/11/2016, 17:58, "nfinn" <nfinn@alumni.caltech.edu =
<mailto:nfinn@alumni.caltech.edu>> wrote:
> >>
> >>   Patrick,
> >>
> >>   If you want to work on this approach, I don=E2=80=99t want to =
stop you.  But, it looks to me that it increases the number of options =
(and thus, everyone=E2=80=99s work load) with no benefit gained.
> >>
> >>   If the application has time requirements, I assume that it is =
able to synchronize its clock using one or more specific protocols, and =
therefore knows how to interpret each of those protocols=E2=80=99 =
accuracy information.  Problem solved.  Teaching the application to ask =
the PCE 1) requires that a PCE b e present, and 2) requires the =
application to implement a query/response of some kind to express its =
requirements and understand the answer.  Keep in mind that the answer is =
not always =E2=80=9Cyes/no=E2=80=9D.  Perhaps the application can =
operate in different modes, depending on clock accuracy.
> >>
> >>   Of course, if you or any expert in the time protocols tell us =
that only a centralized controller can make the determination for a =
significant class of use cases, I=E2=80=99m ready to change my mind.
> >>
> >>   =E2=80=94 Norm
> >>
> >>> On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) =
<pwetterw@cisco.com <mailto:pwetterw@cisco.com>> wrote:
> >>>
> >>> I=E2=80=99m just wondering if this has to be reported to the =
application or to the PCE in case of central computing?
> >>>
> >>> Application asks for the accuracy then the PCE answers if this is =
possible or not.
> >>>
> >>> We may have both cases.
> >>>
> >>> Thanks,
> >>>
> >>> Patrick
> >>>
> >>> On 02/11/2016, 16:43, "detnet on behalf of Jouni Korhonen" =
<detnet-bounces@ietf.org <mailto:detnet-bounces@ietf.org> on behalf of =
jouni.korhonen@broadcom.com <mailto:jouni.korhonen@broadcom.com>> wrote:
> >>>
> >>>  looks good to me.
> >>>
> >>>  - jouni
> >>>
> >>>> On Oct 31, 2016, at 11:59 PM, nfinn <nfinn@alumni.caltech.edu =
<mailto:nfinn@alumni.caltech.edu>> wrote:
> >>>>
> >>>> I think that=E2=80=99s a very good summary of my preferred =
approach.  Is it satisfactory for you?
> >>>>
> >>>> =E2=80=94 Norm
> >>>>
> >>>>> On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. =
<eagros@dolby.com <mailto:eagros@dolby.com>> wrote:
> >>>>>
> >>>>> Hi Pascal, Olivier, Norm, WG,
> >>>>> So the consensus is, to paraphrase Norm:
> >>>>>
> >>>>> 1) Make sure that the time protocols are able to report, along =
with the time, the accuracy provided.
> >>>>> 2) The application will decide whether that is sufficient.
> >>>>> 3) The accuracy reported will likely consist of several =
parameters (frequency accuracy, absolute accuracy, etc.).
> >>>>> 4) Different time protocols may have different parameters for =
accuracy.
> >>>>> 5) An application might care about one or more of those =
parameters.
> >>>>> 6) An application might then operate in one of various modes, =
depending on the accuracy provided.
> >>>>>
> >>>>> If anyone has any other understanding or input, please reply.
> >>>>> Thanks,
> >>>>> Ethan.
> >>>>>
> >>>>> -----Original Message-----
> >>>>> From: detnet [mailto:detnet-bounces@ietf.org =
<mailto:detnet-bounces@ietf.org>] On Behalf Of Pascal
> >>>>> Thubert (pthubert)
> >>>>> Sent: Tuesday, October 11, 2016 4:29 AM
> >>>>> To: Olivier Marce; detnet@ietf.org <mailto:detnet@ietf.org>
> >>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to =
express app time accuracy and reliability needs?
> >>>>>
> >>>>> This is my understanding too, Olivier.
> >>>>>
> >>>>> Also, time-related work is done elsewhere, whether one thinks of =
IETF or outside the IETF. We do not want to be taken in the middle of =
that storm.
> >>>>> Best can do is probably state requirements, but for all I know =
we are using time as an information provided by external means, as =
opposed to managing it.
> >>>>>
> >>>>> Cheers,
> >>>>>
> >>>>> Pascal
> >>>>>
> >>>>> -----Original Message-----
> >>>>> From: detnet [mailto:detnet-bounces@ietf.org =
<mailto:detnet-bounces@ietf.org>] On Behalf Of Olivier
> >>>>> Marce
> >>>>> Sent: jeudi 6 octobre 2016 12:05
> >>>>> To: detnet@ietf.org <mailto:detnet@ietf.org>
> >>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to =
express app time accuracy and reliability needs?
> >>>>>
> >>>>> Hi,
> >>>>> I'm in favor of Norm' position: DetNet should concentrate on  =
reliable, on-time delivery of packets. Time accuracy is required for =
DetNet but out of scope, as many solutions exist and is not only a =
networking topic.
> >>>>> At most, DetNet could provide some reference examples on how =
providing required time accuracy.
> >>>>>
> >>>>>
> >>>>> Regards
> >>>>>
> >>>>> Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :
> >>>>>> Interesting question.
> >>>>>>
> >>>>>> It seems more useful to me to make sure that the time protocols
> >>>>>> are able to report, along with the time, the accuracy provided.
> >>>>>> The application can then decide whether that is sufficient.  =
The
> >>>>>> accuracy reported will likely consist of several parameters
> >>>>>> (frequency accuracy, absolute accuracy, etc.).  Different time
> >>>>>> protocols may have different parameters for accuracy.  The
> >>>>>> application might worried about one or the other of those
> >>>>>> parameters.  It might operate in different modes, depending on
> >>>>>> the accuracy provided.  I don't see the value in moving the =
decision point anywhere else.
> >>>>>>
> >>>>>> With DetNet, one can imagine a bandwidth reservation crossing a
> >>>>>> boundary between two different master clock domains.  My
> >>>>>> inclination would be to disallow that, at least for now.  Given
> >>>>>> an application that runs for long enough, any frequency
> >>>>>> difference between source and sink will eventually cause =
starvation or overflow.
> >>>>>>
> >>>>>> All that said, let's suppose that you have a solid use case =
that
> >>>>>> is expected to *try* to run across clock domain boundaries, and
> >>>>>> we want to prevent that when it won't work.  This could be =
solved
> >>>>>> by an application-level protocol that exchanges clock domain =
information.
> >>>>>> This could be solved by configuring the network controller to
> >>>>>> disallow domain crossings.  This could be handled by parameters
> >>>>>> in the reservation protocol, as you suggest, so that the
> >>>>>> controller can allow some reservations but not others.  I'll
> >>>>>> leave it to timing experts to pick some number of appropriate =
parameters.
> >>>>>>
> >>>>>> One last consideration - Are you sure that all applications =
that
> >>>>>> have these timing requirements also require bandwidth
> >>>>>> reservations?  I'm not sure of that.  And, if not, a protocol
> >>>>>> separate from the bandwidth reservation might be indicated.
> >>>>>>
> >>>>>> - Norm
> >>>>>>
> >>>>>>> On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A. =
<eagros@dolby.com <mailto:eagros@dolby.com>
> >>>>>>> <mailto:eagros@dolby.com <mailto:eagros@dolby.com>>> wrote:
> >>>>>>>
> >>>>>>> Hi Folks,
> >>>>>>>
> >>>>>>> As of our IETF 96 meeting there were still a couple of Use =
Case
> >>>>>>> Statements that I would like clarity on. Here's the first,
> >>>>>>> remaining to follow in separate emails.
> >>>>>>>
> >>>>>>> Question:
> >>>>>>> How will an application express its time accuracy and
> >>>>>>> reliability needs? Is that within scope of DetNet?
> >>>>>>>
> >>>>>>> Discussion:
> >>>>>>> In AVB/TSN when an application (talker) attempts to make a
> >>>>>>> stream reservation it must state how much bandwidth that =
stream
> >>>>>>> reservation requires. Presumably in a LAN this is sufficient
> >>>>>>> since a LAN presumably has consistent time accuracy and =
reliability metrics.
> >>>>>>>
> >>>>>>> For DetNet, in which we support interconnected DetNet networks
> >>>>>>> and have widely varying requirements for timing accuracy and
> >>>>>>> reliability depending on the use case, it appears to me that =
we
> >>>>>>> need to allow an application to provide this kind of =
information
> >>>>>>> to the network, and a way for the network to either agree or
> >>>>>>> decline to provide the requested service (analogous to AVB/TSN
> >>>>>>> accepting or declining a stream reservation based on the =
bandwidth requested).
> >>>>>>>
> >>>>>>> We have had some discussion about this (see below) but nothing
> >>>>>>> near consensus. Other thoughts from anyone?
> >>>>>>> Ethan.
> >>>>>>>
> >>>>>>> -------------------------------- Discussion, oldest item =
first:
> >>>>>>>
> >>>>>>> Ethan Grossman wrote:
> >>>>>>> Timekeeping - the only explicit DetNet Ask for this is in the
> >>>>>>> use cases is in M2M as "Precise time synchronization accuracy
> >>>>>>> (1us)" and I think the intent (as in other use cases) is that
> >>>>>>> the DetNet Ask is for a way to specify the required accuracy, =
not how to achieve that accuracy.
> >>>>>>>
> >>>>>>> Norm Finn wrote:
> >>>>>>> Timekeeping is an essential part of many, probably most, of =
the
> >>>>>>> applications that also find DetNet useful.  That having been
> >>>>>>> said, so is protection against EMI and electrical power =
saving.
> >>>>>>> Let's concentrate DetNet on reliable, on-time delivery of
> >>>>>>> packets.  I'm not even sure that "a way to specify the =
required accuracy" need be in scope.
> >>>>>>>
> >>>>>>> Rodney Cummings wrote:
> >>>>>>> I rarely disagree with Norm, but on this point I'll have to =
quibble a bit.
> >>>>>>> I agree that we don't need DetNet to specify how time sync is
> >>>>>>> accomplished. There are plenty of IEEE 1588 techniques (and
> >>>>>>> similar) for that purpose.
> >>>>>>> I also agree that we should concentrate on reliable, on-time
> >>>>>>> delivery of packets (i.e. worst-case latency).
> >>>>>>> If I don't know how accurate my time sync is, then how do I =
know
> >>>>>>> when a packet is delivered on time? If I don't know the
> >>>>>>> reliability of my time sync, how can I reliably measure that =
packet delivery?
> >>>>>>> Almost all (if not 100%) of DetNet use cases require time sync
> >>>>>>> at the end systems to some degree of accuracy. I agree that we
> >>>>>>> don't need to address the implementation of that time sync, =
but
> >>>>>>> the application requirements are needed for time sync =
(including
> >>>>>>> reliability) just as much as for packet delivery.
> >>>>>>> --------------------------------
> >>>>>>>
> >>>>>>> _______________________________________________
> >>>>>>> detnet mailing list
> >>>>>>> detnet@ietf.org <mailto:detnet@ietf.org> =
<mailto:detnet@ietf.org <mailto:detnet@ietf.org>>
> >>>>>>> https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> _______________________________________________
> >>>>>> detnet mailing list
> >>>>>> detnet@ietf.org <mailto:detnet@ietf.org>
> >>>>>> https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>
> >>>>>>
> >>>>>
> >>>>> --
> >>>>> Olivier Marc=C3=A9
> >>>>> Nokia Bell Labs France
> >>>>> "we need to guard against increased levels of reporting and =
other
> >>>>> requirements that distract you from doing what you really need =
to
> >>>>> be doing." Rajeev Suri, Nokia CEO, April 2016
> >>>>>
> >>>>> _______________________________________________
> >>>>> detnet mailing list
> >>>>> detnet@ietf.org <mailto:detnet@ietf.org>
> >>>>> https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>
> >>>>>
> >>>>> _______________________________________________
> >>>>> detnet mailing list
> >>>>> detnet@ietf.org <mailto:detnet@ietf.org>
> >>>>> https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>
> >>>>>
> >>>>> _______________________________________________
> >>>>> detnet mailing list
> >>>>> detnet@ietf.org <mailto:detnet@ietf.org>
> >>>>> https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>
> >>>>
> >>>> _______________________________________________
> >>>> detnet mailing list
> >>>> detnet@ietf.org <mailto:detnet@ietf.org>
> >>>> https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>
> >>>
> >>>  --
> >>>  Jouni Korhonen, Broadcom Ltd.
> >>>  M: +1-408-391-7160 <tel:%2B1-408-391-7160>
> >>>
> >>>  _______________________________________________
> >>>  detnet mailing list
> >>>  detnet@ietf.org <mailto:detnet@ietf.org>
> >>>  https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>
> >>>
> >>>
> >>> _______________________________________________
> >>> detnet mailing list
> >>> detnet@ietf.org <mailto:detnet@ietf.org>
> >>> https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>
> >>
> >>
> >>
> >> _______________________________________________
> >> detnet mailing list
> >> detnet@ietf.org <mailto:detnet@ietf.org>
> >> https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>
> >
> >
> > _______________________________________________
> > detnet mailing list
> > detnet@ietf.org <mailto:detnet@ietf.org>
> > https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>
>=20
> _______________________________________________
> detnet mailing list
> detnet@ietf.org <mailto:detnet@ietf.org>
> https://www.ietf.org/mailman/listinfo/detnet =
<https://www.ietf.org/mailman/listinfo/detnet>
> _______________________________________________
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">Good question, Diego. &nbsp;I think that Bal=C3=A1zs=E2=80=99s =
availability / loss rate does, in effect, give that, doesn=E2=80=99t it? =
&nbsp;A burst of errors would, presumably, be counted as a loss of =
availability. &nbsp;Or, were you thinking of something more complex?<div =
class=3D""><br class=3D""></div><div class=3D"">=E2=80=94 Norm</div><div =
class=3D"">&nbsp;<br class=3D""><div><blockquote type=3D"cite" =
class=3D""><div class=3D"">On Nov 8, 2016, at 10:59, Prof. Diego Dujovne =
&lt;<a href=3D"mailto:diego.dujovne@mail.udp.cl" =
class=3D"">diego.dujovne@mail.udp.cl</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><p dir=3D"ltr" =
class=3D"">Dear all,<br class=3D"">
=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp; I wonder if you have included burstiness as a measure of the number =
of consecutive packet loss.<br class=3D"">
Regards,</p><p dir=3D"ltr" =
class=3D"">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Diego<br =
class=3D"">
</p>
<div class=3D"gmail_extra"><br class=3D""><div class=3D"gmail_quote">El =
nov 8, 2016 1:33 PM, "Bal=C3=A1zs Varga A" &lt;<a =
href=3D"mailto:balazs.a.varga@ericsson.com" =
class=3D"">balazs.a.varga@ericsson.com</a>&gt; escribi=C3=B3:<br =
type=3D"attribution" class=3D""><blockquote class=3D"gmail_quote" =
style=3D"margin:0 0 0 .8ex;border-left:1px #ccc =
solid;padding-left:1ex">Hi Norm,<br class=3D"">
<br class=3D"">
Agree the direction except one particular part, namely how you have =
defined loss.<br class=3D"">
&gt; ... At the very least, there are a range of loss rates for =
different time scales, that<br class=3D"">
&gt; take MTTR into account.<br class=3D"">
We should not couple loss and availability so tight via MTTR. It is more =
usual to define<br class=3D"">
service parameters as follows:<br class=3D"">
- Loss rate: ratio of lost and forwarded packets when the service is =
available.<br class=3D"">
- Availability: when forwarding parameters (BW, delay, etc.) are =
meet.<br class=3D"">
For example if you have a network outage then service is not available. =
During that<br class=3D"">
period of time the loss rate is 100 percent. Furthermore operators =
usually extract<br class=3D"">
some time periods (e.g. predefined maintenance time, etc.) when =
calculating<br class=3D"">
availability.<br class=3D"">
<br class=3D"">
Therefore the application should require two set of parameters:<br =
class=3D"">
- transport parameters (BW, delay, jitter, loss, etc.)<br class=3D"">
- service parameters (availability, MTTR, etc.)<br class=3D"">
<br class=3D"">
Cheers<br class=3D"">
Bala'zs<br class=3D"">
<br class=3D"">
-----Original Message-----<br class=3D"">
From: detnet [mailto:<a href=3D"mailto:detnet-bounces@ietf.org" =
class=3D"">detnet-bounces@ietf.<wbr class=3D"">org</a>] On Behalf Of =
Norman Finn<br class=3D"">
Sent: Tuesday, November 08, 2016 3:57 PM<br class=3D"">
To: Grossman, Ethan A. &lt;<a href=3D"mailto:eagros@dolby.com" =
class=3D"">eagros@dolby.com</a>&gt;<br class=3D"">
Cc: <a href=3D"mailto:detnet@ietf.org" class=3D"">detnet@ietf.org</a><br =
class=3D"">
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
reliability needs?<br class=3D"">
<br class=3D"">
Others have given good answers to this question.&nbsp; Here=E2=80=99s my =
$0.02.<br class=3D"">
<br class=3D"">
My first thought (in an IEEE contribution a few years ago) was that an =
application could specify its reliability requirement for a given flow, =
and the network would meet it or say, =E2=80=9CNo.=E2=80=9D&nbsp; And, =
ultimately, that may be achievable.&nbsp; But, not easily.<br class=3D"">
<br class=3D"">
For example =E2=80=94 does you application *really* know whether it =
needs 10^-12 or 10^-13 loss rate?&nbsp; Does the network *really* know =
whether it can deliver 10^-12 or 10^-13?<br class=3D"">
<br class=3D"">
I=E2=80=99m leaning, at this time, towards:<br class=3D"">
<br class=3D"">
&nbsp; =E2=80=A2 The network operator defines some small number of =
classes of delivery reliability, based on number of paths, whether the =
paths have wireless links, or whatever other variables are present in =
the network.&nbsp; Note that these classes may have criteria other than =
simply, "probability of loss".&nbsp; At the very least, there are a =
range of loss rates for different time scales, that take MTTR into =
account.<br class=3D"">
<br class=3D"">
&nbsp; =E2=80=A2 The app owners decide which class of reliability is =
required for each flow, and how to balance network reliability against =
application-level mitigation of failures.<br class=3D"">
<br class=3D"">
&nbsp; =E2=80=A2 At run time, a reservation request includes a =
reliability class specifier.<br class=3D"">
<br class=3D"">
&nbsp; =E2=80=A2 The app owners and network administrators have to find =
network design, app design, and class structure that gives a =
cost-effective solution to the overall problem.<br class=3D"">
<br class=3D"">
This is not dissimilar to the DiffServ situation.&nbsp; We (DetNet) =
might or might not be able to define some useful guidelines for =
reliability classes that are widely applicable.<br class=3D"">
<br class=3D"">
Having this paradigm in mind might help us define useful ways to =
parameterize the problem.<br class=3D"">
<br class=3D"">
=E2=80=94 Norm<br class=3D"">
<br class=3D"">
&gt; On Nov 7, 2016, at 17:24, Grossman, Ethan A. &lt;<a =
href=3D"mailto:eagros@dolby.com" class=3D"">eagros@dolby.com</a>&gt; =
wrote:<br class=3D"">
&gt;<br class=3D"">
&gt; In starting this thread I inadvertently included two topics - 1) =
expressing timing accuracy, and 2) expressing reliability, so I am =
spinning out the latter into this new thread.<br class=3D"">
&gt;<br class=3D"">
&gt; My question here is "Is the reliability (e.g. number of 9's) a =
fixed property of the given DetNet, or is it something that can be =
configured on a per-flow basis via an API?"<br class=3D"">
&gt; For example a DetNet might provide one redundant path, or two =
redundant paths, resulting in two distinct levels of reliability, and =
that could be be "for all flows" or on a "per-flow" basis.<br class=3D"">
&gt; I would assume that the app should be able to query the network for =
the reliability figure (or range, or options), then based on that, =
specify the choice to the network for a given flow?<br class=3D"">
&gt; Is there an existing API for that?<br class=3D"">
&gt;<br class=3D"">
&gt; Thanks,<br class=3D"">
&gt; Ethan.<br class=3D"">
&gt;<br class=3D"">
&gt; ______________________________<wbr class=3D"">__________<br =
class=3D"">
&gt; From: nfinn &lt;<a href=3D"mailto:nfinn@alumni.caltech.edu" =
class=3D"">nfinn@alumni.caltech.edu</a>&gt;<br class=3D"">
&gt; Sent: Thursday, November 3, 2016 10:43 AM<br class=3D"">
&gt; To: Patrick Wetterwald (pwetterw)<br class=3D"">
&gt; Cc: Jouni Korhonen; Grossman, Ethan A.; Pascal Thubert;<br =
class=3D"">
&gt; <a href=3D"mailto:detnet@ietf.org" class=3D"">detnet@ietf.org</a>; =
Olivier Marce<br class=3D"">
&gt; Subject: Re: [Detnet] DetNet Use Case Statements - How to express =
app time accuracy and reliability needs?<br class=3D"">
&gt;<br class=3D"">
&gt; Agreed!<br class=3D"">
&gt;<br class=3D"">
&gt; =E2=80=94 Norm<br class=3D"">
&gt;<br class=3D"">
&gt;&gt; On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) =
&lt;<a href=3D"mailto:pwetterw@cisco.com" =
class=3D"">pwetterw@cisco.com</a>&gt; wrote:<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt; Hi Norm,<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt; I agree that Detnet should not spend too much time on time =
synchronization and time accuracy. I just wanted to express that if we =
want / need to report time accuracy, the application is not the only one =
interested in such information. In case of a PCE based Detnet, the PCE =
is one of the recipient of this information.<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt; Some applications may have their own time reference (based on =
GPS for instance).&nbsp; What the application expects from a Detnet =
network is guarantee of delivery in a maximum latency with a bounded =
jitter and it differs to the PCE to handle all that is needed to ensure =
it.<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt; Does it make sense?<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt; Thanks,<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt; Patrick<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt; On 02/11/2016, 17:58, "nfinn" &lt;<a =
href=3D"mailto:nfinn@alumni.caltech.edu" =
class=3D"">nfinn@alumni.caltech.edu</a>&gt; wrote:<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt;&nbsp; &nbsp;Patrick,<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt;&nbsp; &nbsp;If you want to work on this approach, I don=E2=80=99t=
 want to stop you.&nbsp; But, it looks to me that it increases the =
number of options (and thus, everyone=E2=80=99s work load) with no =
benefit gained.<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt;&nbsp; &nbsp;If the application has time requirements, I assume =
that it is able to synchronize its clock using one or more specific =
protocols, and therefore knows how to interpret each of those =
protocols=E2=80=99 accuracy information.&nbsp; Problem solved.&nbsp; =
Teaching the application to ask the PCE 1) requires that a PCE b e =
present, and 2) requires the application to implement a query/response =
of some kind to express its requirements and understand the =
answer.&nbsp; Keep in mind that the answer is not always =
=E2=80=9Cyes/no=E2=80=9D.&nbsp; Perhaps the application can operate in =
different modes, depending on clock accuracy.<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt;&nbsp; &nbsp;Of course, if you or any expert in the time =
protocols tell us that only a centralized controller can make the =
determination for a significant class of use cases, I=E2=80=99m ready to =
change my mind.<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt;&nbsp; &nbsp;=E2=80=94 Norm<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt;&gt; On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) =
&lt;<a href=3D"mailto:pwetterw@cisco.com" =
class=3D"">pwetterw@cisco.com</a>&gt; wrote:<br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt; I=E2=80=99m just wondering if this has to be reported to =
the application or to the PCE in case of central computing?<br class=3D"">=

&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt; Application asks for the accuracy then the PCE answers if =
this is possible or not.<br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt; We may have both cases.<br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt; Thanks,<br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt; Patrick<br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt; On 02/11/2016, 16:43, "detnet on behalf of Jouni Korhonen" =
&lt;<a href=3D"mailto:detnet-bounces@ietf.org" =
class=3D"">detnet-bounces@ietf.org</a> on behalf of <a =
href=3D"mailto:jouni.korhonen@broadcom.com" =
class=3D"">jouni.korhonen@broadcom.com</a>&gt; wrote:<br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&nbsp; looks good to me.<br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&nbsp; - jouni<br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt; On Oct 31, 2016, at 11:59 PM, nfinn &lt;<a =
href=3D"mailto:nfinn@alumni.caltech.edu" =
class=3D"">nfinn@alumni.caltech.edu</a>&gt; wrote:<br class=3D"">
&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt; I think that=E2=80=99s a very good summary of my =
preferred approach.&nbsp; Is it satisfactory for you?<br class=3D"">
&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt; =E2=80=94 Norm<br class=3D"">
&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. =
&lt;<a href=3D"mailto:eagros@dolby.com" =
class=3D"">eagros@dolby.com</a>&gt; wrote:<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Hi Pascal, Olivier, Norm, WG,<br class=3D"">
&gt;&gt;&gt;&gt;&gt; So the consensus is, to paraphrase Norm:<br =
class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; 1) Make sure that the time protocols are able to =
report, along with the time, the accuracy provided.<br class=3D"">
&gt;&gt;&gt;&gt;&gt; 2) The application will decide whether that is =
sufficient.<br class=3D"">
&gt;&gt;&gt;&gt;&gt; 3) The accuracy reported will likely consist of =
several parameters (frequency accuracy, absolute accuracy, etc.).<br =
class=3D"">
&gt;&gt;&gt;&gt;&gt; 4) Different time protocols may have different =
parameters for accuracy.<br class=3D"">
&gt;&gt;&gt;&gt;&gt; 5) An application might care about one or more of =
those parameters.<br class=3D"">
&gt;&gt;&gt;&gt;&gt; 6) An application might then operate in one of =
various modes, depending on the accuracy provided.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; If anyone has any other understanding or input, =
please reply.<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Thanks,<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Ethan.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; -----Original Message-----<br class=3D"">
&gt;&gt;&gt;&gt;&gt; From: detnet [mailto:<a =
href=3D"mailto:detnet-bounces@ietf.org" =
class=3D"">detnet-bounces@ietf.<wbr class=3D"">org</a>] On Behalf Of =
Pascal<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Thubert (pthubert)<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Sent: Tuesday, October 11, 2016 4:29 AM<br =
class=3D"">
&gt;&gt;&gt;&gt;&gt; To: Olivier Marce; <a href=3D"mailto:detnet@ietf.org"=
 class=3D"">detnet@ietf.org</a><br class=3D"">
&gt;&gt;&gt;&gt;&gt; Subject: Re: [Detnet] DetNet Use Case Statements - =
How to express app time accuracy and reliability needs?<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; This is my understanding too, Olivier.<br class=3D"">=

&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Also, time-related work is done elsewhere, whether =
one thinks of IETF or outside the IETF. We do not want to be taken in =
the middle of that storm.<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Best can do is probably state requirements, but for =
all I know we are using time as an information provided by external =
means, as opposed to managing it.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Cheers,<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Pascal<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; -----Original Message-----<br class=3D"">
&gt;&gt;&gt;&gt;&gt; From: detnet [mailto:<a =
href=3D"mailto:detnet-bounces@ietf.org" =
class=3D"">detnet-bounces@ietf.<wbr class=3D"">org</a>] On Behalf Of =
Olivier<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Marce<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Sent: jeudi 6 octobre 2016 12:05<br class=3D"">
&gt;&gt;&gt;&gt;&gt; To: <a href=3D"mailto:detnet@ietf.org" =
class=3D"">detnet@ietf.org</a><br class=3D"">
&gt;&gt;&gt;&gt;&gt; Subject: Re: [Detnet] DetNet Use Case Statements - =
How to express app time accuracy and reliability needs?<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Hi,<br class=3D"">
&gt;&gt;&gt;&gt;&gt; I'm in favor of Norm' position: DetNet should =
concentrate on&nbsp; reliable, on-time delivery of packets. Time =
accuracy is required for DetNet but out of scope, as many solutions =
exist and is not only a networking topic.<br class=3D"">
&gt;&gt;&gt;&gt;&gt; At most, DetNet could provide some reference =
examples on how providing required time accuracy.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Regards<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :<br =
class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; Interesting question.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; It seems more useful to me to make sure that =
the time protocols<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; are able to report, along with the time, the =
accuracy provided.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; The application can then decide whether that is =
sufficient.&nbsp; The<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; accuracy reported will likely consist of =
several parameters<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; (frequency accuracy, absolute accuracy, =
etc.).&nbsp; Different time<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; protocols may have different parameters for =
accuracy.&nbsp; The<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; application might worried about one or the =
other of those<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; parameters.&nbsp; It might operate in different =
modes, depending on<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; the accuracy provided.&nbsp; I don't see the =
value in moving the decision point anywhere else.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; With DetNet, one can imagine a bandwidth =
reservation crossing a<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; boundary between two different master clock =
domains.&nbsp; My<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; inclination would be to disallow that, at least =
for now.&nbsp; Given<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; an application that runs for long enough, any =
frequency<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; difference between source and sink will =
eventually cause starvation or overflow.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; All that said, let's suppose that you have a =
solid use case that<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; is expected to *try* to run across clock domain =
boundaries, and<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; we want to prevent that when it won't =
work.&nbsp; This could be solved<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; by an application-level protocol that exchanges =
clock domain information.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; This could be solved by configuring the network =
controller to<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; disallow domain crossings.&nbsp; This could be =
handled by parameters<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; in the reservation protocol, as you suggest, so =
that the<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; controller can allow some reservations but not =
others.&nbsp; I'll<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; leave it to timing experts to pick some number =
of appropriate parameters.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; One last consideration - Are you sure that all =
applications that<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; have these timing requirements also require =
bandwidth<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; reservations?&nbsp; I'm not sure of that.&nbsp; =
And, if not, a protocol<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; separate from the bandwidth reservation might =
be indicated.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; - Norm<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; On Oct 5, 2016, at 4:09 PM, Grossman, Ethan =
A. &lt;<a href=3D"mailto:eagros@dolby.com" =
class=3D"">eagros@dolby.com</a><br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; &lt;mailto:<a =
href=3D"mailto:eagros@dolby.com" class=3D"">eagros@dolby.com</a>&gt;&gt; =
wrote:<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Hi Folks,<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; As of our IETF 96 meeting there were still =
a couple of Use Case<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Statements that I would like clarity on. =
Here's the first,<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; remaining to follow in separate emails.<br =
class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Question:<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; How will an application express its time =
accuracy and<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability needs? Is that within scope of =
DetNet?<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Discussion:<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; In AVB/TSN when an application (talker) =
attempts to make a<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; stream reservation it must state how much =
bandwidth that stream<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reservation requires. Presumably in a LAN =
this is sufficient<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; since a LAN presumably has consistent time =
accuracy and reliability metrics.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; For DetNet, in which we support =
interconnected DetNet networks<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; and have widely varying requirements for =
timing accuracy and<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability depending on the use case, it =
appears to me that we<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; need to allow an application to provide =
this kind of information<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; to the network, and a way for the network =
to either agree or<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; decline to provide the requested service =
(analogous to AVB/TSN<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; accepting or declining a stream reservation =
based on the bandwidth requested).<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; We have had some discussion about this (see =
below) but nothing<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; near consensus. Other thoughts from =
anyone?<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Ethan.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; ------------------------------<wbr =
class=3D"">-- Discussion, oldest item first:<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Ethan Grossman wrote:<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Timekeeping - the only explicit DetNet Ask =
for this is in the<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; use cases is in M2M as "Precise time =
synchronization accuracy<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; (1us)" and I think the intent (as in other =
use cases) is that<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; the DetNet Ask is for a way to specify the =
required accuracy, not how to achieve that accuracy.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Norm Finn wrote:<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Timekeeping is an essential part of many, =
probably most, of the<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; applications that also find DetNet =
useful.&nbsp; That having been<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; said, so is protection against EMI and =
electrical power saving.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Let's concentrate DetNet on reliable, =
on-time delivery of<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; packets.&nbsp; I'm not even sure that "a =
way to specify the required accuracy" need be in scope.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Rodney Cummings wrote:<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; I rarely disagree with Norm, but on this =
point I'll have to quibble a bit.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; I agree that we don't need DetNet to =
specify how time sync is<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; accomplished. There are plenty of IEEE 1588 =
techniques (and<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; similar) for that purpose.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; I also agree that we should concentrate on =
reliable, on-time<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; delivery of packets (i.e. worst-case =
latency).<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; If I don't know how accurate my time sync =
is, then how do I know<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; when a packet is delivered on time? If I =
don't know the<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability of my time sync, how can I =
reliably measure that packet delivery?<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Almost all (if not 100%) of DetNet use =
cases require time sync<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; at the end systems to some degree of =
accuracy. I agree that we<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; don't need to address the implementation of =
that time sync, but<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; the application requirements are needed for =
time sync (including<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability) just as much as for packet =
delivery.<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; ------------------------------<wbr =
class=3D"">--<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; ______________________________<wbr =
class=3D"">_________________<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; detnet mailing list<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" =
class=3D"">detnet@ietf.org</a> &lt;mailto:<a =
href=3D"mailto:detnet@ietf.org" class=3D"">detnet@ietf.org</a>&gt;<br =
class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;&gt; <a =
href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"noreferrer" =
target=3D"_blank" class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; ______________________________<wbr =
class=3D"">_________________<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; detnet mailing list<br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" =
class=3D"">detnet@ietf.org</a><br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt; <a =
href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"noreferrer" =
target=3D"_blank" class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
&gt;&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; --<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Olivier Marc=C3=A9<br class=3D"">
&gt;&gt;&gt;&gt;&gt; Nokia Bell Labs France<br class=3D"">
&gt;&gt;&gt;&gt;&gt; "we need to guard against increased levels of =
reporting and other<br class=3D"">
&gt;&gt;&gt;&gt;&gt; requirements that distract you from doing what you =
really need to<br class=3D"">
&gt;&gt;&gt;&gt;&gt; be doing." Rajeev Suri, Nokia CEO, April 2016<br =
class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; ______________________________<wbr =
class=3D"">_________________<br class=3D"">
&gt;&gt;&gt;&gt;&gt; detnet mailing list<br class=3D"">
&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" =
class=3D"">detnet@ietf.org</a><br class=3D"">
&gt;&gt;&gt;&gt;&gt; <a =
href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"noreferrer" =
target=3D"_blank" class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; ______________________________<wbr =
class=3D"">_________________<br class=3D"">
&gt;&gt;&gt;&gt;&gt; detnet mailing list<br class=3D"">
&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" =
class=3D"">detnet@ietf.org</a><br class=3D"">
&gt;&gt;&gt;&gt;&gt; <a =
href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"noreferrer" =
target=3D"_blank" class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
&gt;&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt;&gt; ______________________________<wbr =
class=3D"">_________________<br class=3D"">
&gt;&gt;&gt;&gt;&gt; detnet mailing list<br class=3D"">
&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" =
class=3D"">detnet@ietf.org</a><br class=3D"">
&gt;&gt;&gt;&gt;&gt; <a =
href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"noreferrer" =
target=3D"_blank" class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
&gt;&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&gt; ______________________________<wbr =
class=3D"">_________________<br class=3D"">
&gt;&gt;&gt;&gt; detnet mailing list<br class=3D"">
&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" =
class=3D"">detnet@ietf.org</a><br class=3D"">
&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" =
rel=3D"noreferrer" target=3D"_blank" =
class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&nbsp; --<br class=3D"">
&gt;&gt;&gt;&nbsp; Jouni Korhonen, Broadcom Ltd.<br class=3D"">
&gt;&gt;&gt;&nbsp; M: <a href=3D"tel:%2B1-408-391-7160" =
value=3D"+14083917160" class=3D"">+1-408-391-7160</a><br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;&nbsp; ______________________________<wbr =
class=3D"">_________________<br class=3D"">
&gt;&gt;&gt;&nbsp; detnet mailing list<br class=3D"">
&gt;&gt;&gt;&nbsp; <a href=3D"mailto:detnet@ietf.org" =
class=3D"">detnet@ietf.org</a><br class=3D"">
&gt;&gt;&gt;&nbsp; <a =
href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"noreferrer" =
target=3D"_blank" class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt;<br class=3D"">
&gt;&gt;&gt; ______________________________<wbr =
class=3D"">_________________<br class=3D"">
&gt;&gt;&gt; detnet mailing list<br class=3D"">
&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" =
class=3D"">detnet@ietf.org</a><br class=3D"">
&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" =
rel=3D"noreferrer" target=3D"_blank" =
class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt;<br class=3D"">
&gt;&gt; ______________________________<wbr =
class=3D"">_________________<br class=3D"">
&gt;&gt; detnet mailing list<br class=3D"">
&gt;&gt; <a href=3D"mailto:detnet@ietf.org" =
class=3D"">detnet@ietf.org</a><br class=3D"">
&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" =
rel=3D"noreferrer" target=3D"_blank" =
class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
&gt;<br class=3D"">
&gt;<br class=3D"">
&gt; ______________________________<wbr class=3D"">_________________<br =
class=3D"">
&gt; detnet mailing list<br class=3D"">
&gt; <a href=3D"mailto:detnet@ietf.org" class=3D"">detnet@ietf.org</a><br =
class=3D"">
&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" =
rel=3D"noreferrer" target=3D"_blank" =
class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
<br class=3D"">
______________________________<wbr class=3D"">_________________<br =
class=3D"">
detnet mailing list<br class=3D"">
<a href=3D"mailto:detnet@ietf.org" class=3D"">detnet@ietf.org</a><br =
class=3D"">
<a href=3D"https://www.ietf.org/mailman/listinfo/detnet" =
rel=3D"noreferrer" target=3D"_blank" =
class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
______________________________<wbr class=3D"">_________________<br =
class=3D"">
detnet mailing list<br class=3D"">
<a href=3D"mailto:detnet@ietf.org" class=3D"">detnet@ietf.org</a><br =
class=3D"">
<a href=3D"https://www.ietf.org/mailman/listinfo/detnet" =
rel=3D"noreferrer" target=3D"_blank" =
class=3D"">https://www.ietf.org/mailman/<wbr =
class=3D"">listinfo/detnet</a><br class=3D"">
</blockquote></div></div>
_______________________________________________<br class=3D"">detnet =
mailing list<br class=3D""><a href=3D"mailto:detnet@ietf.org" =
class=3D"">detnet@ietf.org</a><br =
class=3D"">https://www.ietf.org/mailman/listinfo/detnet<br =
class=3D""></div></blockquote></div><br class=3D""></div></body></html>=

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From: "Prof. Diego Dujovne" <diego.dujovne@mail.udp.cl>
Date: Tue, 8 Nov 2016 16:48:29 -0300
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To: Norman Finn <nfinn@alumni.caltech.edu>
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Cc: "Grossman, Ethan A." <eagros@dolby.com>, "detnet@ietf.org" <detnet@ietf.org>, =?UTF-8?Q?Bal=C3=A1zs_A=2E_Varga?= <balazs.a.varga@ericsson.com>
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app reliability needs?
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Norman,
             In fact, this is one of the characteristics
of the statistical distribution of packet loss, obtaining the probability
of having a sequence of <n> packets lost in a row.
Although this is typical on wireless links, it may arise in other types
of physical layers.

Thinking about Bal=C3=A1zs' availability rate (I cite his text):

"Therefore the application should require two set of parameters:
- transport parameters (BW, delay, jitter, loss, etc.)
- service parameters (availability, MTTR, etc.)"

I think a short burst of lost packets should be interpreted as normal
behavior of the link
instead of a lack of availability, which is the result of a network failure
and the consequent repair time.

My one and a half cent.

Regards,

                                    Diego






2016-11-08 16:34 GMT-03:00 Norman Finn <nfinn@alumni.caltech.edu>:

> Good question, Diego.  I think that Bal=C3=A1zs=E2=80=99s availability / =
loss rate
> does, in effect, give that, doesn=E2=80=99t it?  A burst of errors would,
> presumably, be counted as a loss of availability.  Or, were you thinking =
of
> something more complex?
>
> =E2=80=94 Norm
>
>
> On Nov 8, 2016, at 10:59, Prof. Diego Dujovne <diego.dujovne@mail.udp.cl>
> wrote:
>
> Dear all,
>               I wonder if you have included burstiness as a measure of th=
e
> number of consecutive packet loss.
> Regards,
>
>          Diego
>
> El nov 8, 2016 1:33 PM, "Bal=C3=A1zs Varga A" <balazs.a.varga@ericsson.co=
m>
> escribi=C3=B3:
>
>> Hi Norm,
>>
>> Agree the direction except one particular part, namely how you have
>> defined loss.
>> > ... At the very least, there are a range of loss rates for different
>> time scales, that
>> > take MTTR into account.
>> We should not couple loss and availability so tight via MTTR. It is more
>> usual to define
>> service parameters as follows:
>> - Loss rate: ratio of lost and forwarded packets when the service is
>> available.
>> - Availability: when forwarding parameters (BW, delay, etc.) are meet.
>> For example if you have a network outage then service is not available.
>> During that
>> period of time the loss rate is 100 percent. Furthermore operators
>> usually extract
>> some time periods (e.g. predefined maintenance time, etc.) when
>> calculating
>> availability.
>>
>> Therefore the application should require two set of parameters:
>> - transport parameters (BW, delay, jitter, loss, etc.)
>> - service parameters (availability, MTTR, etc.)
>>
>> Cheers
>> Bala'zs
>>
>> -----Original Message-----
>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Norman Finn
>> Sent: Tuesday, November 08, 2016 3:57 PM
>> To: Grossman, Ethan A. <eagros@dolby.com>
>> Cc: detnet@ietf.org
>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express app
>> reliability needs?
>>
>> Others have given good answers to this question.  Here=E2=80=99s my $0.0=
2.
>>
>> My first thought (in an IEEE contribution a few years ago) was that an
>> application could specify its reliability requirement for a given flow, =
and
>> the network would meet it or say, =E2=80=9CNo.=E2=80=9D  And, ultimately=
, that may be
>> achievable.  But, not easily.
>>
>> For example =E2=80=94 does you application *really* know whether it need=
s 10^-12
>> or 10^-13 loss rate?  Does the network *really* know whether it can deli=
ver
>> 10^-12 or 10^-13?
>>
>> I=E2=80=99m leaning, at this time, towards:
>>
>>   =E2=80=A2 The network operator defines some small number of classes of=
 delivery
>> reliability, based on number of paths, whether the paths have wireless
>> links, or whatever other variables are present in the network.  Note tha=
t
>> these classes may have criteria other than simply, "probability of loss"=
.
>> At the very least, there are a range of loss rates for different time
>> scales, that take MTTR into account.
>>
>>   =E2=80=A2 The app owners decide which class of reliability is required=
 for each
>> flow, and how to balance network reliability against application-level
>> mitigation of failures.
>>
>>   =E2=80=A2 At run time, a reservation request includes a reliability cl=
ass
>> specifier.
>>
>>   =E2=80=A2 The app owners and network administrators have to find netwo=
rk
>> design, app design, and class structure that gives a cost-effective
>> solution to the overall problem.
>>
>> This is not dissimilar to the DiffServ situation.  We (DetNet) might or
>> might not be able to define some useful guidelines for reliability class=
es
>> that are widely applicable.
>>
>> Having this paradigm in mind might help us define useful ways to
>> parameterize the problem.
>>
>> =E2=80=94 Norm
>>
>> > On Nov 7, 2016, at 17:24, Grossman, Ethan A. <eagros@dolby.com> wrote:
>> >
>> > In starting this thread I inadvertently included two topics - 1)
>> expressing timing accuracy, and 2) expressing reliability, so I am spinn=
ing
>> out the latter into this new thread.
>> >
>> > My question here is "Is the reliability (e.g. number of 9's) a fixed
>> property of the given DetNet, or is it something that can be configured =
on
>> a per-flow basis via an API?"
>> > For example a DetNet might provide one redundant path, or two redundan=
t
>> paths, resulting in two distinct levels of reliability, and that could b=
e
>> be "for all flows" or on a "per-flow" basis.
>> > I would assume that the app should be able to query the network for th=
e
>> reliability figure (or range, or options), then based on that, specify t=
he
>> choice to the network for a given flow?
>> > Is there an existing API for that?
>> >
>> > Thanks,
>> > Ethan.
>> >
>> > ________________________________________
>> > From: nfinn <nfinn@alumni.caltech.edu>
>> > Sent: Thursday, November 3, 2016 10:43 AM
>> > To: Patrick Wetterwald (pwetterw)
>> > Cc: Jouni Korhonen; Grossman, Ethan A.; Pascal Thubert;
>> > detnet@ietf.org; Olivier Marce
>> > Subject: Re: [Detnet] DetNet Use Case Statements - How to express app
>> time accuracy and reliability needs?
>> >
>> > Agreed!
>> >
>> > =E2=80=94 Norm
>> >
>> >> On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) <
>> pwetterw@cisco.com> wrote:
>> >>
>> >> Hi Norm,
>> >>
>> >> I agree that Detnet should not spend too much time on time
>> synchronization and time accuracy. I just wanted to express that if we w=
ant
>> / need to report time accuracy, the application is not the only one
>> interested in such information. In case of a PCE based Detnet, the PCE i=
s
>> one of the recipient of this information.
>> >>
>> >> Some applications may have their own time reference (based on GPS for
>> instance).  What the application expects from a Detnet network is guaran=
tee
>> of delivery in a maximum latency with a bounded jitter and it differs to
>> the PCE to handle all that is needed to ensure it.
>> >>
>> >> Does it make sense?
>> >>
>> >> Thanks,
>> >>
>> >> Patrick
>> >>
>> >> On 02/11/2016, 17:58, "nfinn" <nfinn@alumni.caltech.edu> wrote:
>> >>
>> >>   Patrick,
>> >>
>> >>   If you want to work on this approach, I don=E2=80=99t want to stop =
you.
>> But, it looks to me that it increases the number of options (and thus,
>> everyone=E2=80=99s work load) with no benefit gained.
>> >>
>> >>   If the application has time requirements, I assume that it is able
>> to synchronize its clock using one or more specific protocols, and
>> therefore knows how to interpret each of those protocols=E2=80=99 accura=
cy
>> information.  Problem solved.  Teaching the application to ask the PCE 1=
)
>> requires that a PCE b e present, and 2) requires the application to
>> implement a query/response of some kind to express its requirements and
>> understand the answer.  Keep in mind that the answer is not always
>> =E2=80=9Cyes/no=E2=80=9D.  Perhaps the application can operate in differ=
ent modes,
>> depending on clock accuracy.
>> >>
>> >>   Of course, if you or any expert in the time protocols tell us that
>> only a centralized controller can make the determination for a significa=
nt
>> class of use cases, I=E2=80=99m ready to change my mind.
>> >>
>> >>   =E2=80=94 Norm
>> >>
>> >>> On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) <
>> pwetterw@cisco.com> wrote:
>> >>>
>> >>> I=E2=80=99m just wondering if this has to be reported to the applica=
tion or
>> to the PCE in case of central computing?
>> >>>
>> >>> Application asks for the accuracy then the PCE answers if this is
>> possible or not.
>> >>>
>> >>> We may have both cases.
>> >>>
>> >>> Thanks,
>> >>>
>> >>> Patrick
>> >>>
>> >>> On 02/11/2016, 16:43, "detnet on behalf of Jouni Korhonen" <
>> detnet-bounces@ietf.org on behalf of jouni.korhonen@broadcom.com> wrote:
>> >>>
>> >>>  looks good to me.
>> >>>
>> >>>  - jouni
>> >>>
>> >>>> On Oct 31, 2016, at 11:59 PM, nfinn <nfinn@alumni.caltech.edu>
>> wrote:
>> >>>>
>> >>>> I think that=E2=80=99s a very good summary of my preferred approach=
.  Is it
>> satisfactory for you?
>> >>>>
>> >>>> =E2=80=94 Norm
>> >>>>
>> >>>>> On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. <eagros@dolby.com>
>> wrote:
>> >>>>>
>> >>>>> Hi Pascal, Olivier, Norm, WG,
>> >>>>> So the consensus is, to paraphrase Norm:
>> >>>>>
>> >>>>> 1) Make sure that the time protocols are able to report, along wit=
h
>> the time, the accuracy provided.
>> >>>>> 2) The application will decide whether that is sufficient.
>> >>>>> 3) The accuracy reported will likely consist of several parameters
>> (frequency accuracy, absolute accuracy, etc.).
>> >>>>> 4) Different time protocols may have different parameters for
>> accuracy.
>> >>>>> 5) An application might care about one or more of those parameters=
.
>> >>>>> 6) An application might then operate in one of various modes,
>> depending on the accuracy provided.
>> >>>>>
>> >>>>> If anyone has any other understanding or input, please reply.
>> >>>>> Thanks,
>> >>>>> Ethan.
>> >>>>>
>> >>>>> -----Original Message-----
>> >>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Pascal
>> >>>>> Thubert (pthubert)
>> >>>>> Sent: Tuesday, October 11, 2016 4:29 AM
>> >>>>> To: Olivier Marce; detnet@ietf.org
>> >>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express
>> app time accuracy and reliability needs?
>> >>>>>
>> >>>>> This is my understanding too, Olivier.
>> >>>>>
>> >>>>> Also, time-related work is done elsewhere, whether one thinks of
>> IETF or outside the IETF. We do not want to be taken in the middle of th=
at
>> storm.
>> >>>>> Best can do is probably state requirements, but for all I know we
>> are using time as an information provided by external means, as opposed =
to
>> managing it.
>> >>>>>
>> >>>>> Cheers,
>> >>>>>
>> >>>>> Pascal
>> >>>>>
>> >>>>> -----Original Message-----
>> >>>>> From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Olivier
>> >>>>> Marce
>> >>>>> Sent: jeudi 6 octobre 2016 12:05
>> >>>>> To: detnet@ietf.org
>> >>>>> Subject: Re: [Detnet] DetNet Use Case Statements - How to express
>> app time accuracy and reliability needs?
>> >>>>>
>> >>>>> Hi,
>> >>>>> I'm in favor of Norm' position: DetNet should concentrate on
>> reliable, on-time delivery of packets. Time accuracy is required for Det=
Net
>> but out of scope, as many solutions exist and is not only a networking
>> topic.
>> >>>>> At most, DetNet could provide some reference examples on how
>> providing required time accuracy.
>> >>>>>
>> >>>>>
>> >>>>> Regards
>> >>>>>
>> >>>>> Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :
>> >>>>>> Interesting question.
>> >>>>>>
>> >>>>>> It seems more useful to me to make sure that the time protocols
>> >>>>>> are able to report, along with the time, the accuracy provided.
>> >>>>>> The application can then decide whether that is sufficient.  The
>> >>>>>> accuracy reported will likely consist of several parameters
>> >>>>>> (frequency accuracy, absolute accuracy, etc.).  Different time
>> >>>>>> protocols may have different parameters for accuracy.  The
>> >>>>>> application might worried about one or the other of those
>> >>>>>> parameters.  It might operate in different modes, depending on
>> >>>>>> the accuracy provided.  I don't see the value in moving the
>> decision point anywhere else.
>> >>>>>>
>> >>>>>> With DetNet, one can imagine a bandwidth reservation crossing a
>> >>>>>> boundary between two different master clock domains.  My
>> >>>>>> inclination would be to disallow that, at least for now.  Given
>> >>>>>> an application that runs for long enough, any frequency
>> >>>>>> difference between source and sink will eventually cause
>> starvation or overflow.
>> >>>>>>
>> >>>>>> All that said, let's suppose that you have a solid use case that
>> >>>>>> is expected to *try* to run across clock domain boundaries, and
>> >>>>>> we want to prevent that when it won't work.  This could be solved
>> >>>>>> by an application-level protocol that exchanges clock domain
>> information.
>> >>>>>> This could be solved by configuring the network controller to
>> >>>>>> disallow domain crossings.  This could be handled by parameters
>> >>>>>> in the reservation protocol, as you suggest, so that the
>> >>>>>> controller can allow some reservations but not others.  I'll
>> >>>>>> leave it to timing experts to pick some number of appropriate
>> parameters.
>> >>>>>>
>> >>>>>> One last consideration - Are you sure that all applications that
>> >>>>>> have these timing requirements also require bandwidth
>> >>>>>> reservations?  I'm not sure of that.  And, if not, a protocol
>> >>>>>> separate from the bandwidth reservation might be indicated.
>> >>>>>>
>> >>>>>> - Norm
>> >>>>>>
>> >>>>>>> On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A. <eagros@dolby.com
>> >>>>>>> <mailto:eagros@dolby.com>> wrote:
>> >>>>>>>
>> >>>>>>> Hi Folks,
>> >>>>>>>
>> >>>>>>> As of our IETF 96 meeting there were still a couple of Use Case
>> >>>>>>> Statements that I would like clarity on. Here's the first,
>> >>>>>>> remaining to follow in separate emails.
>> >>>>>>>
>> >>>>>>> Question:
>> >>>>>>> How will an application express its time accuracy and
>> >>>>>>> reliability needs? Is that within scope of DetNet?
>> >>>>>>>
>> >>>>>>> Discussion:
>> >>>>>>> In AVB/TSN when an application (talker) attempts to make a
>> >>>>>>> stream reservation it must state how much bandwidth that stream
>> >>>>>>> reservation requires. Presumably in a LAN this is sufficient
>> >>>>>>> since a LAN presumably has consistent time accuracy and
>> reliability metrics.
>> >>>>>>>
>> >>>>>>> For DetNet, in which we support interconnected DetNet networks
>> >>>>>>> and have widely varying requirements for timing accuracy and
>> >>>>>>> reliability depending on the use case, it appears to me that we
>> >>>>>>> need to allow an application to provide this kind of information
>> >>>>>>> to the network, and a way for the network to either agree or
>> >>>>>>> decline to provide the requested service (analogous to AVB/TSN
>> >>>>>>> accepting or declining a stream reservation based on the
>> bandwidth requested).
>> >>>>>>>
>> >>>>>>> We have had some discussion about this (see below) but nothing
>> >>>>>>> near consensus. Other thoughts from anyone?
>> >>>>>>> Ethan.
>> >>>>>>>
>> >>>>>>> -------------------------------- Discussion, oldest item first:
>> >>>>>>>
>> >>>>>>> Ethan Grossman wrote:
>> >>>>>>> Timekeeping - the only explicit DetNet Ask for this is in the
>> >>>>>>> use cases is in M2M as "Precise time synchronization accuracy
>> >>>>>>> (1us)" and I think the intent (as in other use cases) is that
>> >>>>>>> the DetNet Ask is for a way to specify the required accuracy, no=
t
>> how to achieve that accuracy.
>> >>>>>>>
>> >>>>>>> Norm Finn wrote:
>> >>>>>>> Timekeeping is an essential part of many, probably most, of the
>> >>>>>>> applications that also find DetNet useful.  That having been
>> >>>>>>> said, so is protection against EMI and electrical power saving.
>> >>>>>>> Let's concentrate DetNet on reliable, on-time delivery of
>> >>>>>>> packets.  I'm not even sure that "a way to specify the required
>> accuracy" need be in scope.
>> >>>>>>>
>> >>>>>>> Rodney Cummings wrote:
>> >>>>>>> I rarely disagree with Norm, but on this point I'll have to
>> quibble a bit.
>> >>>>>>> I agree that we don't need DetNet to specify how time sync is
>> >>>>>>> accomplished. There are plenty of IEEE 1588 techniques (and
>> >>>>>>> similar) for that purpose.
>> >>>>>>> I also agree that we should concentrate on reliable, on-time
>> >>>>>>> delivery of packets (i.e. worst-case latency).
>> >>>>>>> If I don't know how accurate my time sync is, then how do I know
>> >>>>>>> when a packet is delivered on time? If I don't know the
>> >>>>>>> reliability of my time sync, how can I reliably measure that
>> packet delivery?
>> >>>>>>> Almost all (if not 100%) of DetNet use cases require time sync
>> >>>>>>> at the end systems to some degree of accuracy. I agree that we
>> >>>>>>> don't need to address the implementation of that time sync, but
>> >>>>>>> the application requirements are needed for time sync (including
>> >>>>>>> reliability) just as much as for packet delivery.
>> >>>>>>> --------------------------------
>> >>>>>>>
>> >>>>>>> _______________________________________________
>> >>>>>>> detnet mailing list
>> >>>>>>> detnet@ietf.org <mailto:detnet@ietf.org>
>> >>>>>>> https://www.ietf.org/mailman/listinfo/detnet
>> >>>>>>
>> >>>>>>
>> >>>>>>
>> >>>>>> _______________________________________________
>> >>>>>> detnet mailing list
>> >>>>>> detnet@ietf.org
>> >>>>>> https://www.ietf.org/mailman/listinfo/detnet
>> >>>>>>
>> >>>>>
>> >>>>> --
>> >>>>> Olivier Marc=C3=A9
>> >>>>> Nokia Bell Labs France
>> >>>>> "we need to guard against increased levels of reporting and other
>> >>>>> requirements that distract you from doing what you really need to
>> >>>>> be doing." Rajeev Suri, Nokia CEO, April 2016
>> >>>>>
>> >>>>> _______________________________________________
>> >>>>> detnet mailing list
>> >>>>> detnet@ietf.org
>> >>>>> https://www.ietf.org/mailman/listinfo/detnet
>> >>>>>
>> >>>>> _______________________________________________
>> >>>>> detnet mailing list
>> >>>>> detnet@ietf.org
>> >>>>> https://www.ietf.org/mailman/listinfo/detnet
>> >>>>>
>> >>>>> _______________________________________________
>> >>>>> detnet mailing list
>> >>>>> detnet@ietf.org
>> >>>>> https://www.ietf.org/mailman/listinfo/detnet
>> >>>>
>> >>>> _______________________________________________
>> >>>> detnet mailing list
>> >>>> detnet@ietf.org
>> >>>> https://www.ietf.org/mailman/listinfo/detnet
>> >>>
>> >>>  --
>> >>>  Jouni Korhonen, Broadcom Ltd.
>> >>>  M: +1-408-391-7160
>> >>>
>> >>>  _______________________________________________
>> >>>  detnet mailing list
>> >>>  detnet@ietf.org
>> >>>  https://www.ietf.org/mailman/listinfo/detnet
>> >>>
>> >>>
>> >>> _______________________________________________
>> >>> detnet mailing list
>> >>> detnet@ietf.org
>> >>> https://www.ietf.org/mailman/listinfo/detnet
>> >>
>> >>
>> >>
>> >> _______________________________________________
>> >> detnet mailing list
>> >> detnet@ietf.org
>> >> https://www.ietf.org/mailman/listinfo/detnet
>> >
>> >
>> > _______________________________________________
>> > detnet mailing list
>> > detnet@ietf.org
>> > https://www.ietf.org/mailman/listinfo/detnet
>>
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>> _______________________________________________
>> detnet mailing list
>> detnet@ietf.org
>> https://www.ietf.org/mailman/listinfo/detnet
>>
> _______________________________________________
> detnet mailing list
> detnet@ietf.org
> https://www.ietf.org/mailman/listinfo/detnet
>
>
>


--=20
DIEGO DUJOVNE
Profesor Asociado
Escuela de Inform=C3=A1tica y Telecomunicaciones
Facultad de Ingenier=C3=ADa - Universidad Diego Portales - Chile
www.ingenieria.udp.cl
(56 2) 676 8125

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<div dir=3D"ltr"><div><div>Norman,<br></div>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 In fact, this is one of the char=
acteristics<br></div><div>of the statistical distribution of packet loss, o=
btaining the probability<br></div><div>of having a sequence of &lt;n&gt; pa=
ckets lost in a row. <br>Although this is typical on wireless links, it may=
 arise in other types <br>of physical layers.<br><br></div><div>Thinking ab=
out Bal=C3=A1zs&#39; availability rate (I cite his text):<br><br>&quot;Ther=
efore the application should require two set of parameters:<br>
- transport parameters (BW, delay, jitter, loss, etc.)<br>
- service parameters (availability, MTTR, etc.)&quot;<br><br></div><div>I t=
hink a short burst of lost packets should be interpreted as normal behavior=
 of the link<br>instead of a lack of availability, which is the result of a=
 network failure<br></div><div>and the consequent repair time.<br><br></div=
><div>My one and a half cent.<br><br></div><div>Regards,<br><br></div><div>=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Diego<br></div=
><div><br>=C2=A0<br></div><div><br><br></div><div><br></div></div><div clas=
s=3D"gmail_extra"><br><div class=3D"gmail_quote">2016-11-08 16:34 GMT-03:00=
 Norman Finn <span dir=3D"ltr">&lt;<a href=3D"mailto:nfinn@alumni.caltech.e=
du" target=3D"_blank">nfinn@alumni.caltech.edu</a>&gt;</span>:<br><blockquo=
te class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc so=
lid;padding-left:1ex"><div style=3D"word-wrap:break-word">Good question, Di=
ego.=C2=A0 I think that Bal=C3=A1zs=E2=80=99s availability / loss rate does=
, in effect, give that, doesn=E2=80=99t it?=C2=A0 A burst of errors would, =
presumably, be counted as a loss of availability.=C2=A0 Or, were you thinki=
ng of something more complex?<div><br></div><div>=E2=80=94 Norm</div><div><=
div class=3D"h5"><div>=C2=A0<br><div><blockquote type=3D"cite"><div>On Nov =
8, 2016, at 10:59, Prof. Diego Dujovne &lt;<a href=3D"mailto:diego.dujovne@=
mail.udp.cl" target=3D"_blank">diego.dujovne@mail.udp.cl</a>&gt; wrote:</di=
v><br class=3D"m_5608434045281183418Apple-interchange-newline"><div><p dir=
=3D"ltr">Dear all,<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 I wonder if you have included burstiness as a measure of the number of =
consecutive packet loss.<br>
Regards,</p><p dir=3D"ltr">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
 Diego<br>
</p>
<div class=3D"gmail_extra"><br><div class=3D"gmail_quote">El nov 8, 2016 1:=
33 PM, &quot;Bal=C3=A1zs Varga A&quot; &lt;<a href=3D"mailto:balazs.a.varga=
@ericsson.com" target=3D"_blank">balazs.a.varga@ericsson.com</a>&gt; escrib=
i=C3=B3:<br type=3D"attribution"><blockquote class=3D"gmail_quote" style=3D=
"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Norm,<br=
>
<br>
Agree the direction except one particular part, namely how you have defined=
 loss.<br>
&gt; ... At the very least, there are a range of loss rates for different t=
ime scales, that<br>
&gt; take MTTR into account.<br>
We should not couple loss and availability so tight via MTTR. It is more us=
ual to define<br>
service parameters as follows:<br>
- Loss rate: ratio of lost and forwarded packets when the service is availa=
ble.<br>
- Availability: when forwarding parameters (BW, delay, etc.) are meet.<br>
For example if you have a network outage then service is not available. Dur=
ing that<br>
period of time the loss rate is 100 percent. Furthermore operators usually =
extract<br>
some time periods (e.g. predefined maintenance time, etc.) when calculating=
<br>
availability.<br>
<br>
Therefore the application should require two set of parameters:<br>
- transport parameters (BW, delay, jitter, loss, etc.)<br>
- service parameters (availability, MTTR, etc.)<br>
<br>
Cheers<br>
Bala&#39;zs<br>
<br>
-----Original Message-----<br>
From: detnet [mailto:<a href=3D"mailto:detnet-bounces@ietf.org" target=3D"_=
blank">detnet-bounces@ietf.or<wbr>g</a>] On Behalf Of Norman Finn<br>
Sent: Tuesday, November 08, 2016 3:57 PM<br>
To: Grossman, Ethan A. &lt;<a href=3D"mailto:eagros@dolby.com" target=3D"_b=
lank">eagros@dolby.com</a>&gt;<br>
Cc: <a href=3D"mailto:detnet@ietf.org" target=3D"_blank">detnet@ietf.org</a=
><br>
Subject: Re: [Detnet] DetNet Use Case Statements - How to express app relia=
bility needs?<br>
<br>
Others have given good answers to this question.=C2=A0 Here=E2=80=99s my $0=
.02.<br>
<br>
My first thought (in an IEEE contribution a few years ago) was that an appl=
ication could specify its reliability requirement for a given flow, and the=
 network would meet it or say, =E2=80=9CNo.=E2=80=9D=C2=A0 And, ultimately,=
 that may be achievable.=C2=A0 But, not easily.<br>
<br>
For example =E2=80=94 does you application *really* know whether it needs 1=
0^-12 or 10^-13 loss rate?=C2=A0 Does the network *really* know whether it =
can deliver 10^-12 or 10^-13?<br>
<br>
I=E2=80=99m leaning, at this time, towards:<br>
<br>
=C2=A0 =E2=80=A2 The network operator defines some small number of classes =
of delivery reliability, based on number of paths, whether the paths have w=
ireless links, or whatever other variables are present in the network.=C2=
=A0 Note that these classes may have criteria other than simply, &quot;prob=
ability of loss&quot;.=C2=A0 At the very least, there are a range of loss r=
ates for different time scales, that take MTTR into account.<br>
<br>
=C2=A0 =E2=80=A2 The app owners decide which class of reliability is requir=
ed for each flow, and how to balance network reliability against applicatio=
n-level mitigation of failures.<br>
<br>
=C2=A0 =E2=80=A2 At run time, a reservation request includes a reliability =
class specifier.<br>
<br>
=C2=A0 =E2=80=A2 The app owners and network administrators have to find net=
work design, app design, and class structure that gives a cost-effective so=
lution to the overall problem.<br>
<br>
This is not dissimilar to the DiffServ situation.=C2=A0 We (DetNet) might o=
r might not be able to define some useful guidelines for reliability classe=
s that are widely applicable.<br>
<br>
Having this paradigm in mind might help us define useful ways to parameteri=
ze the problem.<br>
<br>
=E2=80=94 Norm<br>
<br>
&gt; On Nov 7, 2016, at 17:24, Grossman, Ethan A. &lt;<a href=3D"mailto:eag=
ros@dolby.com" target=3D"_blank">eagros@dolby.com</a>&gt; wrote:<br>
&gt;<br>
&gt; In starting this thread I inadvertently included two topics - 1) expre=
ssing timing accuracy, and 2) expressing reliability, so I am spinning out =
the latter into this new thread.<br>
&gt;<br>
&gt; My question here is &quot;Is the reliability (e.g. number of 9&#39;s) =
a fixed property of the given DetNet, or is it something that can be config=
ured on a per-flow basis via an API?&quot;<br>
&gt; For example a DetNet might provide one redundant path, or two redundan=
t paths, resulting in two distinct levels of reliability, and that could be=
 be &quot;for all flows&quot; or on a &quot;per-flow&quot; basis.<br>
&gt; I would assume that the app should be able to query the network for th=
e reliability figure (or range, or options), then based on that, specify th=
e choice to the network for a given flow?<br>
&gt; Is there an existing API for that?<br>
&gt;<br>
&gt; Thanks,<br>
&gt; Ethan.<br>
&gt;<br>
&gt; ______________________________<wbr>__________<br>
&gt; From: nfinn &lt;<a href=3D"mailto:nfinn@alumni.caltech.edu" target=3D"=
_blank">nfinn@alumni.caltech.edu</a>&gt;<br>
&gt; Sent: Thursday, November 3, 2016 10:43 AM<br>
&gt; To: Patrick Wetterwald (pwetterw)<br>
&gt; Cc: Jouni Korhonen; Grossman, Ethan A.; Pascal Thubert;<br>
&gt; <a href=3D"mailto:detnet@ietf.org" target=3D"_blank">detnet@ietf.org</=
a>; Olivier Marce<br>
&gt; Subject: Re: [Detnet] DetNet Use Case Statements - How to express app =
time accuracy and reliability needs?<br>
&gt;<br>
&gt; Agreed!<br>
&gt;<br>
&gt; =E2=80=94 Norm<br>
&gt;<br>
&gt;&gt; On Nov 3, 2016, at 9:00 AM, Patrick Wetterwald (pwetterw) &lt;<a h=
ref=3D"mailto:pwetterw@cisco.com" target=3D"_blank">pwetterw@cisco.com</a>&=
gt; wrote:<br>
&gt;&gt;<br>
&gt;&gt; Hi Norm,<br>
&gt;&gt;<br>
&gt;&gt; I agree that Detnet should not spend too much time on time synchro=
nization and time accuracy. I just wanted to express that if we want / need=
 to report time accuracy, the application is not the only one interested in=
 such information. In case of a PCE based Detnet, the PCE is one of the rec=
ipient of this information.<br>
&gt;&gt;<br>
&gt;&gt; Some applications may have their own time reference (based on GPS =
for instance).=C2=A0 What the application expects from a Detnet network is =
guarantee of delivery in a maximum latency with a bounded jitter and it dif=
fers to the PCE to handle all that is needed to ensure it.<br>
&gt;&gt;<br>
&gt;&gt; Does it make sense?<br>
&gt;&gt;<br>
&gt;&gt; Thanks,<br>
&gt;&gt;<br>
&gt;&gt; Patrick<br>
&gt;&gt;<br>
&gt;&gt; On 02/11/2016, 17:58, &quot;nfinn&quot; &lt;<a href=3D"mailto:nfin=
n@alumni.caltech.edu" target=3D"_blank">nfinn@alumni.caltech.edu</a>&gt; wr=
ote:<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0Patrick,<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0If you want to work on this approach, I don=E2=80=99t =
want to stop you.=C2=A0 But, it looks to me that it increases the number of=
 options (and thus, everyone=E2=80=99s work load) with no benefit gained.<b=
r>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0If the application has time requirements, I assume tha=
t it is able to synchronize its clock using one or more specific protocols,=
 and therefore knows how to interpret each of those protocols=E2=80=99 accu=
racy information.=C2=A0 Problem solved.=C2=A0 Teaching the application to a=
sk the PCE 1) requires that a PCE b e present, and 2) requires the applicat=
ion to implement a query/response of some kind to express its requirements =
and understand the answer.=C2=A0 Keep in mind that the answer is not always=
 =E2=80=9Cyes/no=E2=80=9D.=C2=A0 Perhaps the application can operate in dif=
ferent modes, depending on clock accuracy.<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0Of course, if you or any expert in the time protocols =
tell us that only a centralized controller can make the determination for a=
 significant class of use cases, I=E2=80=99m ready to change my mind.<br>
&gt;&gt;<br>
&gt;&gt;=C2=A0 =C2=A0=E2=80=94 Norm<br>
&gt;&gt;<br>
&gt;&gt;&gt; On Nov 2, 2016, at 8:51 AM, Patrick Wetterwald (pwetterw) &lt;=
<a href=3D"mailto:pwetterw@cisco.com" target=3D"_blank">pwetterw@cisco.com<=
/a>&gt; wrote:<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; I=E2=80=99m just wondering if this has to be reported to the a=
pplication or to the PCE in case of central computing?<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; Application asks for the accuracy then the PCE answers if this=
 is possible or not.<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; We may have both cases.<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; Thanks,<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; Patrick<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; On 02/11/2016, 16:43, &quot;detnet on behalf of Jouni Korhonen=
&quot; &lt;<a href=3D"mailto:detnet-bounces@ietf.org" target=3D"_blank">det=
net-bounces@ietf.org</a> on behalf of <a href=3D"mailto:jouni.korhonen@broa=
dcom.com" target=3D"_blank">jouni.korhonen@broadcom.com</a>&gt; wrote:<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;=C2=A0 looks good to me.<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;=C2=A0 - jouni<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt; On Oct 31, 2016, at 11:59 PM, nfinn &lt;<a href=3D"mailto:=
nfinn@alumni.caltech.edu" target=3D"_blank">nfinn@alumni.caltech.edu</a>&gt=
; wrote:<br>
&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt; I think that=E2=80=99s a very good summary of my preferred=
 approach.=C2=A0 Is it satisfactory for you?<br>
&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt; =E2=80=94 Norm<br>
&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; On Oct 31, 2016, at 4:53 PM, Grossman, Ethan A. &lt;<a=
 href=3D"mailto:eagros@dolby.com" target=3D"_blank">eagros@dolby.com</a>&gt=
; wrote:<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Hi Pascal, Olivier, Norm, WG,<br>
&gt;&gt;&gt;&gt;&gt; So the consensus is, to paraphrase Norm:<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; 1) Make sure that the time protocols are able to repor=
t, along with the time, the accuracy provided.<br>
&gt;&gt;&gt;&gt;&gt; 2) The application will decide whether that is suffici=
ent.<br>
&gt;&gt;&gt;&gt;&gt; 3) The accuracy reported will likely consist of severa=
l parameters (frequency accuracy, absolute accuracy, etc.).<br>
&gt;&gt;&gt;&gt;&gt; 4) Different time protocols may have different paramet=
ers for accuracy.<br>
&gt;&gt;&gt;&gt;&gt; 5) An application might care about one or more of thos=
e parameters.<br>
&gt;&gt;&gt;&gt;&gt; 6) An application might then operate in one of various=
 modes, depending on the accuracy provided.<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; If anyone has any other understanding or input, please=
 reply.<br>
&gt;&gt;&gt;&gt;&gt; Thanks,<br>
&gt;&gt;&gt;&gt;&gt; Ethan.<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; -----Original Message-----<br>
&gt;&gt;&gt;&gt;&gt; From: detnet [mailto:<a href=3D"mailto:detnet-bounces@=
ietf.org" target=3D"_blank">detnet-bounces@ietf.or<wbr>g</a>] On Behalf Of =
Pascal<br>
&gt;&gt;&gt;&gt;&gt; Thubert (pthubert)<br>
&gt;&gt;&gt;&gt;&gt; Sent: Tuesday, October 11, 2016 4:29 AM<br>
&gt;&gt;&gt;&gt;&gt; To: Olivier Marce; <a href=3D"mailto:detnet@ietf.org" =
target=3D"_blank">detnet@ietf.org</a><br>
&gt;&gt;&gt;&gt;&gt; Subject: Re: [Detnet] DetNet Use Case Statements - How=
 to express app time accuracy and reliability needs?<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; This is my understanding too, Olivier.<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Also, time-related work is done elsewhere, whether one=
 thinks of IETF or outside the IETF. We do not want to be taken in the midd=
le of that storm.<br>
&gt;&gt;&gt;&gt;&gt; Best can do is probably state requirements, but for al=
l I know we are using time as an information provided by external means, as=
 opposed to managing it.<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Cheers,<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Pascal<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; -----Original Message-----<br>
&gt;&gt;&gt;&gt;&gt; From: detnet [mailto:<a href=3D"mailto:detnet-bounces@=
ietf.org" target=3D"_blank">detnet-bounces@ietf.or<wbr>g</a>] On Behalf Of =
Olivier<br>
&gt;&gt;&gt;&gt;&gt; Marce<br>
&gt;&gt;&gt;&gt;&gt; Sent: jeudi 6 octobre 2016 12:05<br>
&gt;&gt;&gt;&gt;&gt; To: <a href=3D"mailto:detnet@ietf.org" target=3D"_blan=
k">detnet@ietf.org</a><br>
&gt;&gt;&gt;&gt;&gt; Subject: Re: [Detnet] DetNet Use Case Statements - How=
 to express app time accuracy and reliability needs?<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Hi,<br>
&gt;&gt;&gt;&gt;&gt; I&#39;m in favor of Norm&#39; position: DetNet should =
concentrate on=C2=A0 reliable, on-time delivery of packets. Time accuracy i=
s required for DetNet but out of scope, as many solutions exist and is not =
only a networking topic.<br>
&gt;&gt;&gt;&gt;&gt; At most, DetNet could provide some reference examples =
on how providing required time accuracy.<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Regards<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; Le 06/10/2016 =C3=A0 03:30, nfinn a =C3=A9crit :<br>
&gt;&gt;&gt;&gt;&gt;&gt; Interesting question.<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; It seems more useful to me to make sure that the t=
ime protocols<br>
&gt;&gt;&gt;&gt;&gt;&gt; are able to report, along with the time, the accur=
acy provided.<br>
&gt;&gt;&gt;&gt;&gt;&gt; The application can then decide whether that is su=
fficient.=C2=A0 The<br>
&gt;&gt;&gt;&gt;&gt;&gt; accuracy reported will likely consist of several p=
arameters<br>
&gt;&gt;&gt;&gt;&gt;&gt; (frequency accuracy, absolute accuracy, etc.).=C2=
=A0 Different time<br>
&gt;&gt;&gt;&gt;&gt;&gt; protocols may have different parameters for accura=
cy.=C2=A0 The<br>
&gt;&gt;&gt;&gt;&gt;&gt; application might worried about one or the other o=
f those<br>
&gt;&gt;&gt;&gt;&gt;&gt; parameters.=C2=A0 It might operate in different mo=
des, depending on<br>
&gt;&gt;&gt;&gt;&gt;&gt; the accuracy provided.=C2=A0 I don&#39;t see the v=
alue in moving the decision point anywhere else.<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; With DetNet, one can imagine a bandwidth reservati=
on crossing a<br>
&gt;&gt;&gt;&gt;&gt;&gt; boundary between two different master clock domain=
s.=C2=A0 My<br>
&gt;&gt;&gt;&gt;&gt;&gt; inclination would be to disallow that, at least fo=
r now.=C2=A0 Given<br>
&gt;&gt;&gt;&gt;&gt;&gt; an application that runs for long enough, any freq=
uency<br>
&gt;&gt;&gt;&gt;&gt;&gt; difference between source and sink will eventually=
 cause starvation or overflow.<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; All that said, let&#39;s suppose that you have a s=
olid use case that<br>
&gt;&gt;&gt;&gt;&gt;&gt; is expected to *try* to run across clock domain bo=
undaries, and<br>
&gt;&gt;&gt;&gt;&gt;&gt; we want to prevent that when it won&#39;t work.=C2=
=A0 This could be solved<br>
&gt;&gt;&gt;&gt;&gt;&gt; by an application-level protocol that exchanges cl=
ock domain information.<br>
&gt;&gt;&gt;&gt;&gt;&gt; This could be solved by configuring the network co=
ntroller to<br>
&gt;&gt;&gt;&gt;&gt;&gt; disallow domain crossings.=C2=A0 This could be han=
dled by parameters<br>
&gt;&gt;&gt;&gt;&gt;&gt; in the reservation protocol, as you suggest, so th=
at the<br>
&gt;&gt;&gt;&gt;&gt;&gt; controller can allow some reservations but not oth=
ers.=C2=A0 I&#39;ll<br>
&gt;&gt;&gt;&gt;&gt;&gt; leave it to timing experts to pick some number of =
appropriate parameters.<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; One last consideration - Are you sure that all app=
lications that<br>
&gt;&gt;&gt;&gt;&gt;&gt; have these timing requirements also require bandwi=
dth<br>
&gt;&gt;&gt;&gt;&gt;&gt; reservations?=C2=A0 I&#39;m not sure of that.=C2=
=A0 And, if not, a protocol<br>
&gt;&gt;&gt;&gt;&gt;&gt; separate from the bandwidth reservation might be i=
ndicated.<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; - Norm<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; On Oct 5, 2016, at 4:09 PM, Grossman, Ethan A.=
 &lt;<a href=3D"mailto:eagros@dolby.com" target=3D"_blank">eagros@dolby.com=
</a><br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; &lt;mailto:<a href=3D"mailto:eagros@dolby.com"=
 target=3D"_blank">eagros@dolby.com</a>&gt;&gt; wrote:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Hi Folks,<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; As of our IETF 96 meeting there were still a c=
ouple of Use Case<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Statements that I would like clarity on. Here&=
#39;s the first,<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; remaining to follow in separate emails.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Question:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; How will an application express its time accur=
acy and<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability needs? Is that within scope of Det=
Net?<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Discussion:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; In AVB/TSN when an application (talker) attemp=
ts to make a<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; stream reservation it must state how much band=
width that stream<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reservation requires. Presumably in a LAN this=
 is sufficient<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; since a LAN presumably has consistent time acc=
uracy and reliability metrics.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; For DetNet, in which we support interconnected=
 DetNet networks<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; and have widely varying requirements for timin=
g accuracy and<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability depending on the use case, it appe=
ars to me that we<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; need to allow an application to provide this k=
ind of information<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; to the network, and a way for the network to e=
ither agree or<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; decline to provide the requested service (anal=
ogous to AVB/TSN<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; accepting or declining a stream reservation ba=
sed on the bandwidth requested).<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; We have had some discussion about this (see be=
low) but nothing<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; near consensus. Other thoughts from anyone?<br=
>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Ethan.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; ------------------------------<wbr>-- Discussi=
on, oldest item first:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Ethan Grossman wrote:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Timekeeping - the only explicit DetNet Ask for=
 this is in the<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; use cases is in M2M as &quot;Precise time sync=
hronization accuracy<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; (1us)&quot; and I think the intent (as in othe=
r use cases) is that<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; the DetNet Ask is for a way to specify the req=
uired accuracy, not how to achieve that accuracy.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Norm Finn wrote:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Timekeeping is an essential part of many, prob=
ably most, of the<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; applications that also find DetNet useful.=C2=
=A0 That having been<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; said, so is protection against EMI and electri=
cal power saving.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Let&#39;s concentrate DetNet on reliable, on-t=
ime delivery of<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; packets.=C2=A0 I&#39;m not even sure that &quo=
t;a way to specify the required accuracy&quot; need be in scope.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Rodney Cummings wrote:<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; I rarely disagree with Norm, but on this point=
 I&#39;ll have to quibble a bit.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; I agree that we don&#39;t need DetNet to speci=
fy how time sync is<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; accomplished. There are plenty of IEEE 1588 te=
chniques (and<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; similar) for that purpose.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; I also agree that we should concentrate on rel=
iable, on-time<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; delivery of packets (i.e. worst-case latency).=
<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; If I don&#39;t know how accurate my time sync =
is, then how do I know<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; when a packet is delivered on time? If I don&#=
39;t know the<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability of my time sync, how can I reliabl=
y measure that packet delivery?<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; Almost all (if not 100%) of DetNet use cases r=
equire time sync<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; at the end systems to some degree of accuracy.=
 I agree that we<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; don&#39;t need to address the implementation o=
f that time sync, but<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; the application requirements are needed for ti=
me sync (including<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; reliability) just as much as for packet delive=
ry.<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; ------------------------------<wbr>--<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; ______________________________<wbr>___________=
______<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" target=3D"_=
blank">detnet@ietf.org</a> &lt;mailto:<a href=3D"mailto:detnet@ietf.org" ta=
rget=3D"_blank">detnet@ietf.org</a>&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listin=
fo/detnet" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailma=
n/l<wbr>istinfo/detnet</a><br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;&gt; ______________________________<wbr>_______________=
__<br>
&gt;&gt;&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" target=3D"_blan=
k">detnet@ietf.org</a><br>
&gt;&gt;&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/d=
etnet" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/l<=
wbr>istinfo/detnet</a><br>
&gt;&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; --<br>
&gt;&gt;&gt;&gt;&gt; Olivier Marc=C3=A9<br>
&gt;&gt;&gt;&gt;&gt; Nokia Bell Labs France<br>
&gt;&gt;&gt;&gt;&gt; &quot;we need to guard against increased levels of rep=
orting and other<br>
&gt;&gt;&gt;&gt;&gt; requirements that distract you from doing what you rea=
lly need to<br>
&gt;&gt;&gt;&gt;&gt; be doing.&quot; Rajeev Suri, Nokia CEO, April 2016<br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; ______________________________<wbr>_________________<b=
r>
&gt;&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" target=3D"_blank">d=
etnet@ietf.org</a><br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detne=
t" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/l<wbr>=
istinfo/detnet</a><br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; ______________________________<wbr>_________________<b=
r>
&gt;&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" target=3D"_blank">d=
etnet@ietf.org</a><br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detne=
t" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/l<wbr>=
istinfo/detnet</a><br>
&gt;&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt;&gt; ______________________________<wbr>_________________<b=
r>
&gt;&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" target=3D"_blank">d=
etnet@ietf.org</a><br>
&gt;&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detne=
t" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/l<wbr>=
istinfo/detnet</a><br>
&gt;&gt;&gt;&gt;<br>
&gt;&gt;&gt;&gt; ______________________________<wbr>_________________<br>
&gt;&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" target=3D"_blank">detne=
t@ietf.org</a><br>
&gt;&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" r=
el=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/l<wbr>isti=
nfo/detnet</a><br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;=C2=A0 --<br>
&gt;&gt;&gt;=C2=A0 Jouni Korhonen, Broadcom Ltd.<br>
&gt;&gt;&gt;=C2=A0 M: <a href=3D"tel:%2B1-408-391-7160" value=3D"+140839171=
60" target=3D"_blank">+1-408-391-7160</a><br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;=C2=A0 ______________________________<wbr>_________________<br>
&gt;&gt;&gt;=C2=A0 detnet mailing list<br>
&gt;&gt;&gt;=C2=A0 <a href=3D"mailto:detnet@ietf.org" target=3D"_blank">det=
net@ietf.org</a><br>
&gt;&gt;&gt;=C2=A0 <a href=3D"https://www.ietf.org/mailman/listinfo/detnet"=
 rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/l<wbr>is=
tinfo/detnet</a><br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; ______________________________<wbr>_________________<br>
&gt;&gt;&gt; detnet mailing list<br>
&gt;&gt;&gt; <a href=3D"mailto:detnet@ietf.org" target=3D"_blank">detnet@ie=
tf.org</a><br>
&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=
=3D"noreferrer" target=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinf=
o/detnet</a><br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt; ______________________________<wbr>_________________<br>
&gt;&gt; detnet mailing list<br>
&gt;&gt; <a href=3D"mailto:detnet@ietf.org" target=3D"_blank">detnet@ietf.o=
rg</a><br>
&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"no=
referrer" target=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/detn=
et</a><br>
&gt;<br>
&gt;<br>
&gt; ______________________________<wbr>_________________<br>
&gt; detnet mailing list<br>
&gt; <a href=3D"mailto:detnet@ietf.org" target=3D"_blank">detnet@ietf.org</=
a><br>
&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"norefe=
rrer" target=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/detnet</=
a><br>
<br>
______________________________<wbr>_________________<br>
detnet mailing list<br>
<a href=3D"mailto:detnet@ietf.org" target=3D"_blank">detnet@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/detnet</a><br=
>
______________________________<wbr>_________________<br>
detnet mailing list<br>
<a href=3D"mailto:detnet@ietf.org" target=3D"_blank">detnet@ietf.org</a><br=
>
<a href=3D"https://www.ietf.org/mailman/listinfo/detnet" rel=3D"noreferrer"=
 target=3D"_blank">https://www.ietf.org/mailman/l<wbr>istinfo/detnet</a><br=
>
</blockquote></div></div>
______________________________<wbr>_________________<br>detnet mailing list=
<br><a href=3D"mailto:detnet@ietf.org" target=3D"_blank">detnet@ietf.org</a=
><br><a href=3D"https://www.ietf.org/mailman/listinfo/detnet" target=3D"_bl=
ank">https://www.ietf.org/mailman/<wbr>listinfo/detnet</a><br></div></block=
quote></div><br></div></div></div></div></blockquote></div><br><br clear=3D=
"all"><br>-- <br><div class=3D"gmail_signature" data-smartmail=3D"gmail_sig=
nature"><div dir=3D"ltr"><div><div dir=3D"ltr"><div>DIEGO DUJOVNE<br>Profes=
or Asociado<br>Escuela de Inform=C3=A1tica y Telecomunicaciones<br>Facultad=
 de Ingenier=C3=ADa - Universidad Diego Portales - Chile<br><a href=3D"http=
://www.ingenieria.udp.cl" target=3D"_blank">www.ingenieria.udp.cl</a><br>(5=
6 2) 676 8125<br></div></div></div></div></div>
</div>

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To: Zongning <zongning@huawei.com>, Discussion of reliable and deterministic latency attributes <dlnex@ietf.org>, Linda Dunbar <linda.dunbar@huawei.com>, Lou Berger <lberger@labn.net>, Pat Thaler <pat.thaler@broadcom.com>
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Ning,

On 07/11/16 08:52, Zongning wrote:
>
> Hi, Bob,
>
> Thanks for pointing out the text for reading. It is an excellent and 
> useful survey indeed. J
>
> While I am still reading the paper, I have quick (maybe naïve) 
> questions as below.
>
> 1)I see you adopted “the amount of data transferred” as one parameter 
> for benchmarking.
>
If you don't know the context, see {Note 1}
>
> Would you think it is also important to consider the “characteristic 
> of the flow”? e.g. some flow may have regular burst or even be totally 
> unexpected.
>

The answer is no. Because, we chose to to use the division: 
(session-completion-time / original-session-completion-time), so the 
characteristic of the flow would be the same in both cases. Only the 
latency reducing technology would be different.

> 2)I am especially interested in DBCC (Delay Based Congestion Control). 
> The paper argues it is difficult to deploy over the Internet due to 
> potential starvation by loss-based flows. Is this one of the 
> motivation of L4S that separates the queues for different (loss or 
> latency sensitive) flows?
>
No. There are two misunderstandings here.

1/ Without the "Coupled" aspect of the AQM that we recommend, L4S 
congestion controls would starve the bandwidth of loss-based flows, not 
the other way round. Nonetheless, perhaps what you were thinking was 
that, without the DualQ aspect of the AQM, loss-based flows would ruin 
the low latency of L4S flows.

2/ L4S is intended to have all traffic together in the L4S queue. The 
second 'Classic' queue is only for transition, to partition off legacy 
TCP variants until they upgrade. You are incorrectly thinking of the two 
queues as one for low latency and one not. That is what DIffserv gave. 
L4S gives you both ultra-low latency and capacity-seeking flows in the 
same queue, so you don't need a "non-low-latency" queue (except for 
transition).
>
> Again, I’d think it is interesting to have L4S (or similar) capability 
> abstracted and exposed to handle potentially unbounded flows, e.g. how 
> many latency bounded flows could be supported in certain network node.
>
We have overloaded L4S with very large numbers of TCP flows and we still 
get ultra-low queuing delay.
Nonetheless, we identified what is effectively a bug in TCP, where it 
becomes unresponsive to congestion when the window is less than two 
segments. We are working on implementing a TCP with this problem fixed, 
which will be a requirement for L4S congestion controls.

Cheers


Bob

{Note 1}

For the benefit of those in cc, this is about the ranking of a selection 
of techniques by the reduction in latency they offer, and the reduction 
in variability of latency. The problem we were trying to solve was to 
find a metric that allowed comparison between techniques across a huge 
range of scenarios.

Quoting:
"We decided on percent reduction in session completion time
= 100% - (session-completion-time / original-session-completion-time)
‘Session’ is a deliberately general concept that can be stretched to 
mean a message, a connection or a set of connections that fulfil a task. 
This allows us to compare techniques that address a range of 
interactions, as long as the content of the session is the same in the 
before and after scenarios (denominator and numerator):

  * a one-way end-to-end event notification (message), e.g. a price update;
  * a two-way exchange (connection) including connection set-up and
    optionally security set-up, e.g. retrieval of a simple Web page;
  * a set of exchanges of information (session), e.g. retrieval of a
    geographical map identifying hardware shops in a locality.

"
[...]
"
Despite the numerous parameters above that could characterize a 
scenario, two parameters in particular strongly affect the outcome in 
nearly all cases:

  * the amount of data transferred (‘session-size’);
  * how far apart the end-points are (or were originally), e.g. WAN, LAN.

It should be sufficient to visualize just two cases for each of these 
two dimensions, leading to the 2x2 matrix of cases shown.
"

In other words, even though our chosen metric was already normalized to 
the amount of data transferred, we could only compare results for 
similar "amounts of data transferred", so we divided the bubble plots in 
Fig 21 between small sessions and large sessions to give two example 
ranges of data points.


> Anyway, this is a good paper for gap analysis and build new ideas upon.
>
> Thanks.
>
> -Ning
>
> *发件人:*DLNEX [mailto:dlnex-bounces@ietf.org] *代表 *Bob Briscoe
> *发送时间:*2016年10月28日0:40
> *收件人:*Linda Dunbar; Lou Berger; Pat Thaler
> *抄送:*Pascal Thubert (pthubert); dlnex@ietf.org; Patrick Wetterwald 
> (pwetterw); Alia Atlas; matthew.bocci@nokia.com; detnet@ietf.org
> *主题:*Re: [DLNEX] Various sources contributing to E2E latency/delay-- 
> Discussion of reliable and deterministic latency attributes
>
> Linda,
>
> Probably the most useful part of that paper (other than saving you 
> reading over 300 references) is Chapter IX. It attempts to select some 
> of the most interesting approaches, and to quantify how much of the 
> overall latency (in selected scenarios) they remove. Both as text, and 
> as a visualization of their relative merits (mean and variance) in 
> some nice (deliberately approximate) bubble diagrams, using the colour 
> coding of the categories Linda outlined below.
>
>
>
> Bob
>
> On 20/10/16 21:18, Linda Dunbar wrote:
>
>     Lou,
>
>     Change the subject to make the discussion more focused.
>
>     As of now, the DLNex is to explore what kind of characteristics
>     can be exposed by network, or can be imposed by upper layer, to
>     make the delay/latency of E2E services more predictable or more
>     optimal. The final work may eventually fall into some existing
>     IETF WGs. Here, I am just brainstorming some potential exposures:
>
>     This paper "Reducing Internet Latency: A Survey of Techniques and
>     their Merits" (http://www.bobbriscoe.net/pubs.html#latency_survey
>     ) listed multiple sources that contributing to Latency/delay for
>     E2E services:
>
>     /The sources of delay are classified into five main categories:
>     structural delays, interaction between endpoints, delays along
>     transmission paths, delays related to link capacities, and
>     intra-end-host delays./
>
>     /Structural delays arise from the structure of the network or the
>     communication path that is used. /
>
>     The paper shows that one E2E service can use DNS multiple times.
>     Therefore, where DNS is located is a big contributor to the
>     overall latency. This could be a potential exposure by the network.
>
>     /Delays resulting from the interaction between endpoints include
>     delays due to transport initialization and secure session
>     initialization, as well as delays from recovering lost packets and
>     from message-aggregation techniques/
>
>     Is it another exposure? Is there secure channel used?
>
>     /Delays along transmission paths captures the delays that may be
>     encountered as data travels between a sender and a receiver./
>
>     If some segments along the transmission paths are DetNet enabled
>     or OIF’s FlexEthernet enabled, this definitely should be exposed.
>     Then the upper layer can control/reserve the resource as CCAMP has
>     done for MPLS paths and optical channels.
>
>     /Delays related to link capacities include both delays resulting
>     from sharing limited capacity and delays from protocol
>     inefficiencies that under-utilize capacity and therefore
>     communication takes longer than necessary./
>
>     I assume this is the type of work that CCAMP is to address.
>
>     /Intra-end-host delays are delays that occur internally within
>     host endpoints. This includes delays due to buffering in the
>     transport protocol stack and delays within the operating system./
>
>     This is the end hosts TCP/UDP layer.
>
>     Linda
>
>     -----Original Message-----
>     From: Lou Berger [mailto:lberger@labn.net]
>     Sent: Thursday, October 20, 2016 2:36 PM
>     To: Linda Dunbar <linda.dunbar@huawei.com>
>     <mailto:linda.dunbar@huawei.com>; Pat Thaler
>     <pat.thaler@broadcom.com> <mailto:pat.thaler@broadcom.com>
>     Cc: Pascal Thubert (pthubert) <pthubert@cisco.com>
>     <mailto:pthubert@cisco.com>; dlnex@ietf.org
>     <mailto:dlnex@ietf.org>; Patrick Wetterwald (pwetterw)
>     <pwetterw@cisco.com> <mailto:pwetterw@cisco.com>; Alia Atlas
>     <akatlas@gmail.com> <mailto:akatlas@gmail.com>;
>     matthew.bocci@nokia.com <mailto:matthew.bocci@nokia.com>;
>     detnet@ietf.org <mailto:detnet@ietf.org>
>     Subject: Re: [Detnet] FW: New Non-WG Mailing List: DLNEX --
>     Discussion of reliable and deterministic latency attributes
>
>     Hi Linda,
>
>         Could you (or anyone on DLNEX) elaborate on the type of
>     documents you're thinking of delivering?
>
>     In detnet, we've so far been more focused on applications/use
>     cases and data plane options.  But we're really looking forward to
>     contributions/drafts on the information that is needed to support
>     the control of deterministic flows.  The charter states this as:
>
>         Data flow information model: This work will identify the
>
>         information needed for flow establishment and control and be
>
>         used by reservation protocols and YANG data models. The work
>
>         will be independent from the protocol(s) used to control the
>
>         flows (e.g. YANG+NETCONF/RESTCONF, PCEP or GMPLS).
>
>     Any drafts/contributions on this topic or willingness to help
>     define these would be great.
>
>     If there are sufficiently developed ideas, we could probably even
>     find time to discuss in our Seoul session.  (Or perhaps just
>     informally, if there aren't.)
>
>     Thanks,
>
>     Lou
>
>     On 10/19/2016 7:09 PM, Linda Dunbar wrote:
>
>     >
>
>     > Pat,
>
>     >
>
>     >
>
>     >
>
>     > What you said is so true: “The network can't provide a bounded or
>
>     > deterministic latency to an unbounded flow”.
>
>     >
>
>     >
>
>     >
>
>     > DETNET charter starts with
>
>     >
>
>     > The Deterministic Networking (DetNet) Working Group focuses on
>
>     > deterministic data paths that operate over Layer 2 bridged and Layer 3
>
>     > routed segments, where such paths can provide bounds on latency, loss,
>
>     > and packet delay variation (jitter), and high reliability
>
>     >
>
>     >
>
>     >
>
>     > If I understand it correctly, DETNET focuses on the enabling
>
>     > technologies to ensure deterministic latency path across a set of nodes.
>
>     >
>
>     >
>
>     >
>
>     > E2E low latency services has many issues, such as:
>
>     >
>
>     > ·        There could be “bounded flows” that need low latency services
>
>     > mixed with other traffic in the network.
>
>     >
>
>     > ·        E2E services may have to go through many hops, links with
>
>     > some links not supporting DETNET.
>
>     >
>
>     > ·        there could be various protection/re-route mechanisms which
>
>     > all increase latency.
>
>     >
>
>     > ·        etc
>
>     >
>
>     >
>
>     >
>
>     > Some problems specific to WAN include how to isolate the various
>
>     > service traffic, and provide maximum manageability to upper layers.
>
>     >
>
>     >
>
>     >
>
>     > One company in NANOG asked why not use ICMP to mark the delay along
>
>     > the path to give upper link, ..
>
>     >
>
>     >
>
>     >
>
>     > Linda
>
>     >
>
>     >
>
>     >
>
>     >
>
>     >
>
>     > Linda
>
>     >
>
>     >
>
>     >
>
>     > *From:*Pat Thaler [mailto:pat.thaler@broadcom.com]
>
>     > *Sent:* Wednesday, October 19, 2016 5:25 PM
>
>     > *To:* Lou Berger <lberger@labn.net <mailto:lberger@labn.net>>
>
>     > *Cc:* Alia Atlas <akatlas@gmail.com <mailto:akatlas@gmail.com>>; Patrick Wetterwald
>     (pwetterw)
>
>     > <pwetterw@cisco.com <mailto:pwetterw@cisco.com>>;
>     matthew.bocci@nokia.com <mailto:matthew.bocci@nokia.com>; Pascal
>     Thubert
>
>     > (pthubert) <pthubert@cisco.com <mailto:pthubert@cisco.com>>; detnet@ietf.org
>     <mailto:detnet@ietf.org>; dlnex@ietf.org <mailto:dlnex@ietf.org>;
>
>     > Linda Dunbar <linda.dunbar@huawei.com <mailto:linda.dunbar@huawei.com>>
>
>     > *Subject:* Re: [Detnet] FW: New Non-WG Mailing List: DLNEX --
>
>     > Discussion of reliable and deterministic latency attributes
>
>     >
>
>     >
>
>     >
>
>     > We have been having recent discussions about latency such as what type
>
>     > of latency is important.
>
>     >
>
>     >
>
>     >
>
>     > As far as the "feasibility exercise for achieving reliable and
>
>     > deterministic latency through a network element or a segment" that
>
>     > overlaps very much what DetNet and IEEE 802.1 TSN have been doing. I
>
>     > believe we have already shown that it is feasible and are not on
>
>     > specifying how to do that. I'm concerned about the overlap between
>
>     > what that paragraph describes and our work.
>
>     >
>
>     >
>
>     >
>
>     > There could be useful work on communication from the upper layer of
>
>     > the flow characteristics, behavior and requirements. There probably is
>
>     > some gap to fill that would help our work. I'm concerned that the list
>
>     > description focuses only on exposing lower layer characteristics to
>
>     > the upper layer. The network can't provide a bounded or deterministic
>
>     > latency to an unbounded flow - to determine what latency can be
>
>     > provided, one has to know something about the bandwidth utilization of
>
>     > the flow.
>
>     >
>
>     >
>
>     >
>
>     > Regards,
>
>     >
>
>     > Pat
>
>     >
>
>     >
>
>     >
>
>     > On Wed, Oct 19, 2016 at 1:59 PM, Lou Berger <lberger@labn.net <mailto:lberger@labn.net>
>
>     > <mailto:lberger@labn.net>> wrote:
>
>     >
>
>     >     Hi Alia,
>
>     >
>
>     >         Overlap looks likely.  I hope that when it does occur, you send
>
>     >     folks over here to contribute -- additional input / WG participation
>
>     >     would be great!  (For folks not familiar with DetNet, check out our
>
>     >     charter at https://datatracker.ietf.org/wg/detnet/charter/
>
>     >     <https://datatracker.ietf.org/wg/detnet/charter/>)
>
>     >
>
>     >     I expect we'll have some good data plane centric discussions at this
>
>     >     meeting, for those who may be interested (there's even still time to
>
>     >     submit related drafts!)
>
>     >
>
>     >     Cheers,
>
>     >
>
>     >     Lou
>
>     >
>
>     >     DetNet Co-chair
>
>     >
>
>     >     On 10/19/2016 11:46 AM, Alia Atlas wrote:
>
>     >     > Hi Patrick,
>
>     >     >
>
>     >     > The discussion intended on dlnex, a non-WG mailing list, is, I
>
>     >     think,
>
>     >     > broader - spanning the range of communications between upper layer
>
>     >     > applications and the network.  It is not clear yet what work might
>
>     >     > develop.  Be sure that I will be watching for any specific overlap
>
>     >     > with DetNet.
>
>     >     >
>
>     >     > I feel that it is useful to make it easy for groups to have a
>
>     >     list to
>
>     >     > brainstorm about their ideas before work is mature enough to
>
>     >     consider
>
>     >     > for standardization.
>
>     >     >
>
>     >     > Regards,
>
>     >     > Alia
>
>     >     >
>
>     >     > On Wed, Oct 19, 2016 at 8:17 AM, Patrick Wetterwald (pwetterw)
>
>     >     > <pwetterw@cisco.com <mailto:pwetterw@cisco.com
>     <mailto:pwetterw@cisco.com%20%3Cmailto:pwetterw@cisco.com>>
>
>     >     <mailto:pwetterw@cisco.com <mailto:pwetterw@cisco.com
>     <mailto:pwetterw@cisco.com%20%3Cmailto:pwetterw@cisco.com>>>> wrote:
>
>     >     >
>
>     >     >     Can someone explain me why this mailing list is created
>
>     >     outside of
>
>     >     >     DetNet?
>
>     >     >
>
>     >     >     This sounds like a subset of Detnet no?
>
>     >     >
>
>     >     >     Thanks,
>
>     >     >
>
>     >     >     Patrick
>
>     >     >
>
>     >     >
>
>     >     >     On 19/10/2016, 07:56, "detnet on behalf of Pascal Thubert
>
>     >     >     (pthubert)" <detnet-bounces@ietf.org <mailto:detnet-bounces@ietf.org>
>
>     >     <mailto:detnet-bounces@ietf.org>
>
>     >     >     <mailto:detnet-bounces@ietf.org
>
>     >     <mailto:detnet-bounces@ietf.org>> on behalf of pthubert@cisco.com
>     <mailto:pthubert@cisco.com>
>
>     >     <mailto:pthubert@cisco.com>
>
>     >     >     <mailto:pthubert@cisco.com <mailto:pthubert@cisco.com
>     <mailto:pthubert@cisco.com%20%3Cmailto:pthubert@cisco.com>>>> wrote:
>
>     >     >
>
>     >     >         From: IETF-Announce
>
>     >     [mailto:ietf-announce-bounces@ietf.org
>
>     >     <mailto:ietf-announce-bounces@ietf.org>
>
>     >     >     <mailto:ietf-announce-bounces@ietf.org
>
>     >     <mailto:ietf-announce-bounces@ietf.org>>] On Behalf Of IETF
>
>     >     Secretariat
>
>     >     >         Sent: mardi 18 octobre 2016 22:36
>
>     >     >         To: IETF Announcement List <ietf-announce@ietf.org <mailto:ietf-announce@ietf.org>
>
>     >     <mailto:ietf-announce@ietf.org>
>
>     >     >     <mailto:ietf-announce@ietf.org <mailto:ietf-announce@ietf.org
>     <mailto:ietf-announce@ietf.org%20%3Cmailto:ietf-announce@ietf.org>>>>
>
>     >     >         Cc: matthew.bocci@nokia.com <mailto:matthew.bocci@nokia.com>
>
>     >     <mailto:matthew.bocci@nokia.com> <mailto:matthew.bocci@nokia.com
>
>     >     <mailto:matthew.bocci@nokia.com>>;
>
>     >     >dlnex@ietf.org <mailto:dlnex@ietf.org> <mailto:dlnex@ietf.org>
>
>     >     <mailto:dlnex@ietf.org <mailto:dlnex@ietf.org
>     <mailto:dlnex@ietf.org%20%3Cmailto:dlnex@ietf.org>>>;
>
>     >linda.dunbar@huawei.com <mailto:linda.dunbar@huawei.com>
>     <mailto:linda.dunbar@huawei.com>
>
>     >     >     <mailto:linda.dunbar@huawei.com
>
>     >     <mailto:linda.dunbar@huawei.com>>
>
>     >     >         Subject: New Non-WG Mailing List: DLNEX -- Discussion of
>
>     >     >     reliable and deterministic latency attributes
>
>     >     >
>
>     >     >
>
>     >     >         A new IETF non-working group email list has been created.
>
>     >     >
>
>     >     >         List address:dlnex@ietf.org <mailto:address:dlnex@ietf.org>
>
>     >     <mailto:address%3Adlnex@ietf.org> <mailto:address%3Adlnex@ietf.org
>
>     >     <mailto:address%253Adlnex@ietf.org>>
>
>     >     >         Archive:
>
>     >     >https://mailarchive.ietf.org/arch/search/?email_list=dlnex
>
>     >
>
>     >     >     <https://mailarchive.ietf.org/arch/search/?email_list=dlnex>
>
>     >     >         To subscribe:
>
>     >https://www.ietf.org/mailman/listinfo/dlnex
>
>     >     <https://www.ietf.org/mailman/listinfo/dlnex>
>
>     >     >     <https://www.ietf.org/mailman/listinfo/dlnex>
>
>     >     >
>
>     >     >         Purpose:
>
>     >     >         DLNEX is to discuss various latency characteristics that can
>
>     >     >     be exposed by network elements or segments and to explore if
>
>     >     there
>
>     >     >     are any latency related attributes that can be utilized by upper
>
>     >     >     layer. For example, could there be latency exposure that upper
>
>     >     >     layer can utilize to plan how to distribute their content to the
>
>     >     >     right edges to achieve optimal user experience? Or something
>
>     >     used
>
>     >     >     by Interactive AR controller to optimize their services? Is
>
>     >     there
>
>     >     >     any value gained by upper layer expressing that they would
>
>     >     rather
>
>     >     >     have fixed latency than losing packets?
>
>     >     >
>
>     >     >         The discussion is to answer questions like: are there any
>
>     >     >     effective interaction/coordination between upper layer and lower
>
>     >     >     layer to achieve more efficient optimization for latency
>
>     >     sensitive
>
>     >     >     services?
>
>     >     >
>
>     >     >         This discussion group is also a place to showcase the
>
>     >     state of
>
>     >     >     the arts in latency optimized switching architecture and
>
>     >     interface
>
>     >     >     designs, as the feasibility exercise for achieving reliable and
>
>     >     >     deterministic latency through a network element or a segment.
>
>     >     >     Those latency exposures are the foundation for (future) latency
>
>     >     >     optimized control plane.
>
>     >     >
>
>     >     >
>
>     >     >         For additional information, please contact the list
>
>     >     >     administrators.
>
>     >     >
>
>     >     >_______________________________________________
>
>     >     >         detnet mailing list
>
>     >
>
>     >     >detnet@ietf.org <mailto:detnet@ietf.org> <mailto:detnet@ietf.org>
>
>     >     <mailto:detnet@ietf.org <mailto:detnet@ietf.org
>     <mailto:detnet@ietf.org%20%3Cmailto:detnet@ietf.org>>>
>
>     >     >https://www.ietf.org/mailman/listinfo/detnet
>
>     >     >     <https://www.ietf.org/mailman/listinfo/detnet>
>
>     >     >
>
>     >     >
>
>     >     >_______________________________________________
>
>     >     >     detnet mailing list
>
>     >     >detnet@ietf.org <mailto:detnet@ietf.org> <mailto:detnet@ietf.org>
>
>     >     <mailto:detnet@ietf.org <mailto:detnet@ietf.org
>     <mailto:detnet@ietf.org%20%3Cmailto:detnet@ietf.org>>>
>
>     >     >https://www.ietf.org/mailman/listinfo/detnet
>
>     >
>
>     >     >     <https://www.ietf.org/mailman/listinfo/detnet>
>
>     >     >
>
>     >     >
>
>     >     >
>
>     >     >
>
>     >     > _______________________________________________
>
>     >     > detnet mailing list
>
>     >     > detnet@ietf.org <mailto:detnet@ietf.org> <mailto:detnet@ietf.org>
>
>     >     > https://www.ietf.org/mailman/listinfo/detnet
>
>     >
>
>     >_______________________________________________
>
>     >     detnet mailing list
>
>     >detnet@ietf.org <mailto:detnet@ietf.org> <mailto:detnet@ietf.org>
>
>     >https://www.ietf.org/mailman/listinfo/detnet
>
>     >
>
>     >
>
>     >
>
>     >
>
>     >
>
>     > _______________________________________________
>
>     > detnet mailing list
>
>     > detnet@ietf.org <mailto:detnet@ietf.org>
>
>     > https://www.ietf.org/mailman/listinfo/detnet
>
>
>
> -- 
> ________________________________________________________________
> Bob Briscoe http://bobbriscoe.net/

-- 
________________________________________________________________
Bob Briscoe                               http://bobbriscoe.net/


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    Ning,<br>
    <br>
    <div class="moz-cite-prefix">On 07/11/16 08:52, Zongning wrote:<br>
    </div>
    <blockquote
cite="mid:B0D29E0424F2DE47A0B36779EC66677966E8F012@nkgeml513-mbx.china.huawei.com"
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        <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US">Hi, Bob,<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US">Thanks for pointing out the text for reading.
            It is an excellent and useful survey indeed.
          </span><span
            style="font-size:10.5pt;font-family:Wingdings;color:#1F497D"
            lang="EN-US">J</span><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US">While I am still reading the paper, I have
            quick (maybe naïve) questions as below.<o:p></o:p></span></p>
        <p class="MsoListParagraph"
          style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0
          level1 lfo1">
          <!--[if !supportLists]--><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US"><span style="mso-list:Ignore">1)<span
                style="font:7.0pt &quot;Times New Roman&quot;">      
              </span></span></span><!--[endif]--><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US">I see you adopted “the amount of data
            transferred” as one parameter for benchmarking. </span></p>
      </div>
    </blockquote>
    If you don't know the context, see {Note 1}<br>
    <blockquote
cite="mid:B0D29E0424F2DE47A0B36779EC66677966E8F012@nkgeml513-mbx.china.huawei.com"
      type="cite">
      <div class="WordSection1">
        <p class="MsoListParagraph"
          style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0
          level1 lfo1"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US">Would you think it is also important to
            consider the “characteristic of the flow”? e.g. some flow
            may have regular burst or even be totally unexpected.</span></p>
      </div>
    </blockquote>
    <br>
    The answer is no. Because, we chose to to use the division: 
    (session-completion-time / original-session-completion-time), so the
    characteristic of the flow would be the same in both cases. Only the
    latency reducing technology would be different.<br>
    <br>
    <blockquote
cite="mid:B0D29E0424F2DE47A0B36779EC66677966E8F012@nkgeml513-mbx.china.huawei.com"
      type="cite">
      <div class="WordSection1">
        <p class="MsoListParagraph"
          style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0
          level1 lfo1"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoListParagraph"
          style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0
          level1 lfo1">
          <!--[if !supportLists]--><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US"><span style="mso-list:Ignore">2)<span
                style="font:7.0pt &quot;Times New Roman&quot;">      
              </span></span></span><!--[endif]--><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US">I am especially interested in DBCC (Delay Based
            Congestion Control). The paper argues it is difficult to
            deploy over the Internet due to potential starvation by
            loss-based flows. Is this one of the motivation of L4S that
            separates the queues for different (loss or latency
            sensitive) flows? </span></p>
      </div>
    </blockquote>
    No. There are two misunderstandings here. <br>
    <br>
    1/ Without the "Coupled" aspect of the AQM that we recommend, L4S
    congestion controls would starve the bandwidth of loss-based flows,
    not the other way round. Nonetheless, perhaps what you were thinking
    was that, without the DualQ aspect of the AQM, loss-based flows
    would ruin the low latency of L4S flows.<br>
    <br>
    2/ L4S is intended to have all traffic together in the L4S queue.
    The second 'Classic' queue is only for transition, to partition off
    legacy TCP variants until they upgrade. You are incorrectly thinking
    of the two queues as one for low latency and one not. That is what
    DIffserv gave. L4S gives you both ultra-low latency and
    capacity-seeking flows in the same queue, so you don't need a
    "non-low-latency" queue (except for transition).<br>
    <blockquote
cite="mid:B0D29E0424F2DE47A0B36779EC66677966E8F012@nkgeml513-mbx.china.huawei.com"
      type="cite">
      <div class="WordSection1">
        <p class="MsoListParagraph"
          style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0
          level1 lfo1"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US">Again, I’d think it is interesting to have L4S
            (or similar) capability abstracted and exposed to handle
            potentially unbounded flows, e.g. how many latency bounded
            flows could be supported in certain network node.</span></p>
      </div>
    </blockquote>
    We have overloaded L4S with very large numbers of TCP flows and we
    still get ultra-low queuing delay.<br>
    Nonetheless, we identified what is effectively a bug in TCP, where
    it becomes unresponsive to congestion when the window is less than
    two segments. We are working on implementing a TCP with this problem
    fixed, which will be a requirement for L4S congestion controls.<br>
    <br>
    Cheers<br>
    <br>
    <br>
    Bob<br>
    <br>
    {Note 1}<br>
    <br>
    For the benefit of those in cc, this is about the ranking of a
    selection of techniques by the reduction in latency they offer, and
    the reduction in variability of latency. The problem we were trying
    to solve was to find a metric that allowed comparison between
    techniques across a huge range of scenarios.<br>
    <br>
    Quoting: <br>
    "We decided on percent reduction in session completion time
    <div style="left: 640.975px; top: 593.587px; font-size: 16.6043px;
      font-family: sans-serif; transform: scaleX(0.795869);"
      data-canvas-width="220.45573366666676">= 100% -
      (session-completion-time / original-session-completion-time)</div>
    ‘Session’ is a deliberately general concept that can be stretched to
    mean a message, a connection or a set of connections that fulfil a
    task. This allows us to compare techniques that address a range of
    interactions, as long as the content of the session is the same in
    the before and after scenarios (denominator and numerator):
    <ul>
      <li>a one-way end-to-end event notification (message), e.g. a
        price update; </li>
      <li>a two-way exchange (connection) including connection set-up
        and optionally security set-up, e.g. retrieval of a simple Web
        page; </li>
      <li>a set of exchanges of information (session), e.g. retrieval
        of a geographical map identifying hardware shops in a locality.</li>
    </ul>
    "<br>
    [...]<br>
    "<br>
    Despite the numerous parameters above that could characterize a
    scenario, two parameters in particular strongly affect the outcome
    in nearly all cases:
    <ul>
      <li><span class="highlight begin selected">the amount of data
          transferred (‘session-size’);</span></li>
      <li>how far apart the end-points are (or were originally), e.g.
        WAN, LAN.<span class="highlight end selected"></span><span
          class="highlight end selected"></span></li>
    </ul>
    <span class="highlight end selected">It should be sufficient to
      visual</span>ize just two cases for each of these two dimensions,
    leading to the 2x2 matrix of cases shown. <br>
    "<br>
    <br>
    In other words, even though our chosen metric was already normalized
    to the amount of data transferred, we could only compare results for
    similar "amounts of data transferred", so we divided the bubble
    plots in Fig 21 between small sessions and large sessions to give
    two example ranges of data points.<br>
    <br>
    <br>
    <blockquote
cite="mid:B0D29E0424F2DE47A0B36779EC66677966E8F012@nkgeml513-mbx.china.huawei.com"
      type="cite">
      <div class="WordSection1">
        <p class="MsoListParagraph"
          style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0
          level1 lfo1"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US"><o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US">Anyway, this is a good paper for gap analysis
            and build new ideas upon.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US">Thanks.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US">-Ning<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
            lang="EN-US"><o:p> </o:p></span></p>
        <div>
          <div style="border:none;border-top:solid #B5C4DF
            1.0pt;padding:3.0pt 0cm 0cm 0cm">
            <p class="MsoNormal"><b><span
                  style="font-size:10.0pt;color:windowtext">发件人<span
                    lang="EN-US">:</span></span></b><span
                style="font-size:10.0pt;color:windowtext" lang="EN-US">
                DLNEX [<a class="moz-txt-link-freetext" href="mailto:dlnex-bounces@ietf.org">mailto:dlnex-bounces@ietf.org</a>]
              </span><b><span style="font-size:10.0pt;color:windowtext">代表
                </span></b><span
                style="font-size:10.0pt;color:windowtext" lang="EN-US">Bob
                Briscoe<br>
              </span><b><span style="font-size:10.0pt;color:windowtext">发送时间<span
                    lang="EN-US">:</span></span></b><span
                style="font-size:10.0pt;color:windowtext" lang="EN-US">
                2016</span><span
                style="font-size:10.0pt;color:windowtext">年<span
                  lang="EN-US">10</span>月<span lang="EN-US">28</span>日<span
                  lang="EN-US"> 0:40<br>
                </span><b>收件人<span lang="EN-US">:</span></b><span
                  lang="EN-US"> Linda Dunbar; Lou Berger; Pat Thaler<br>
                </span><b>抄送<span lang="EN-US">:</span></b><span
                  lang="EN-US"> Pascal Thubert (pthubert);
                  <a class="moz-txt-link-abbreviated" href="mailto:dlnex@ietf.org">dlnex@ietf.org</a>; Patrick Wetterwald (pwetterw); Alia
                  Atlas; <a class="moz-txt-link-abbreviated" href="mailto:matthew.bocci@nokia.com">matthew.bocci@nokia.com</a>; <a class="moz-txt-link-abbreviated" href="mailto:detnet@ietf.org">detnet@ietf.org</a><br>
                </span><b>主题<span lang="EN-US">:</span></b><span
                  lang="EN-US"> Re: [DLNEX] Various sources contributing
                  to E2E latency/delay-- Discussion of reliable and
                  deterministic latency attributes<o:p></o:p></span></span></p>
          </div>
        </div>
        <p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal" style="margin-bottom:12.0pt"><span
            lang="EN-US">Linda,<br>
            <br>
            Probably the most useful part of that paper (other than
            saving you reading over 300 references) is Chapter IX. It
            attempts to select some of the most interesting approaches,
            and to quantify how much of the overall latency (in selected
            scenarios) they remove. Both as text, and as a visualization
            of their relative merits (mean and variance) in some nice
            (deliberately approximate) bubble diagrams, using the colour
            coding of the categories Linda outlined below.<br>
            <br>
            <br>
            <br>
            Bob<o:p></o:p></span></p>
        <div>
          <p class="MsoNormal"><span lang="EN-US">On 20/10/16 21:18,
              Linda Dunbar wrote:<o:p></o:p></span></p>
        </div>
        <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">Lou,
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"> <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">Change the subject to make the discussion
                more focused.
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;" lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">As of now, the DLNex is to explore what
                kind of characteristics can be exposed by network, or
                can be imposed by upper layer, to make the delay/latency
                of E2E services more predictable or more optimal. The
                final work may eventually fall into some existing IETF
                WGs. Here, I am just brainstorming some potential
                exposures:
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;" lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">This paper "Reducing Internet Latency: A
                Survey of Techniques and their Merits" (<a
                  moz-do-not-send="true"
                  href="http://www.bobbriscoe.net/pubs.html#latency_survey"><span
                    style="color:#0563C1">http://www.bobbriscoe.net/pubs.html#latency_survey</span></a>
                ) listed multiple sources that contributing to
                Latency/delay for E2E services: <o:p>
                </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;" lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#0070C0"
                  lang="EN-US">The sources of delay are classified into
                  five main categories: structural delays, interaction
                  between endpoints, delays along transmission paths,
                  delays related to link capacities, and intra-end-host
                  delays.</span></i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;" lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><a moz-do-not-send="true"
                name="_MailEndCompose"></a><i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#0070C0"
                  lang="EN-US">Structural delays arise from the
                  structure of the network or the communication path
                  that is used.
                </span></i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">The paper shows that one E2E service can
                use DNS multiple times. Therefore, where DNS is located
                is a big contributor to the overall latency. This could
                be a potential exposure by the network.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;" lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#0070C0"
                  lang="EN-US">Delays resulting from the interaction
                  between endpoints include delays due to transport
                  initialization and secure session initialization, as
                  well as delays from recovering lost packets and from
                  message-aggregation techniques</span></i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">Is it another exposure? Is there secure
                channel used?
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;" lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#0070C0"
                  lang="EN-US">Delays along transmission paths captures
                  the delays that may be encountered as data travels
                  between a sender and a receiver.</span></i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">If some segments along the transmission
                paths are DetNet enabled or OIF’s FlexEthernet enabled,
                this definitely should be exposed. Then the upper layer
                can control/reserve the resource as CCAMP has done for
                MPLS paths and optical channels. <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;;color:#0070C0"
                lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#0070C0"
                  lang="EN-US">Delays related to link capacities include
                  both delays resulting from sharing limited capacity
                  and delays from protocol inefficiencies that
                  under-utilize capacity and therefore communication
                  takes longer than necessary.</span></i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">I assume this is the type of work that
                CCAMP is to address.
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;;color:#0070C0"
                lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#0070C0"
                  lang="EN-US">Intra-end-host delays are delays that
                  occur internally within host endpoints. This includes
                  delays due to buffering in the transport protocol
                  stack and delays within the operating system.</span></i><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">This is the end hosts TCP/UDP layer.
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"> <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">Linda<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;" lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">-----Original Message-----<br>
                From: Lou Berger [<a moz-do-not-send="true"
                  href="mailto:lberger@labn.net">mailto:lberger@labn.net</a>]
                <br>
                Sent: Thursday, October 20, 2016 2:36 PM<br>
                To: Linda Dunbar <a moz-do-not-send="true"
                  href="mailto:linda.dunbar@huawei.com">&lt;linda.dunbar@huawei.com&gt;</a>;
                Pat Thaler
                <a moz-do-not-send="true"
                  href="mailto:pat.thaler@broadcom.com">&lt;pat.thaler@broadcom.com&gt;</a><br>
                Cc: Pascal Thubert (pthubert) <a moz-do-not-send="true"
                  href="mailto:pthubert@cisco.com">&lt;pthubert@cisco.com&gt;</a>;
                <a moz-do-not-send="true" href="mailto:dlnex@ietf.org">dlnex@ietf.org</a>;
                Patrick Wetterwald (pwetterw)
                <a moz-do-not-send="true"
                  href="mailto:pwetterw@cisco.com">&lt;pwetterw@cisco.com&gt;</a>;
                Alia Atlas <a moz-do-not-send="true"
                  href="mailto:akatlas@gmail.com">
                  &lt;akatlas@gmail.com&gt;</a>; <a
                  moz-do-not-send="true"
                  href="mailto:matthew.bocci@nokia.com">matthew.bocci@nokia.com</a>;
                <a moz-do-not-send="true" href="mailto:detnet@ietf.org">detnet@ietf.org</a><br>
                Subject: Re: [Detnet] FW: New Non-WG Mailing List: DLNEX
                -- Discussion of reliable and deterministic latency
                attributes<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;" lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">Hi Linda,<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"> <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">    Could you (or anyone on DLNEX)
                elaborate on the type of documents you're thinking of
                delivering?<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"> <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">In detnet, we've so far been more focused
                on applications/use cases and data plane options.  But
                we're really looking forward to contributions/drafts on
                the information that is needed to support the control of
                deterministic flows.  The charter states this as:<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"> <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">    Data flow information model: This work
                will identify the<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">    information needed for flow
                establishment and control and be<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">    used by reservation protocols and YANG
                data models. The work<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">    will be independent from the
                protocol(s) used to control the<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">    flows (e.g. YANG+NETCONF/RESTCONF, PCEP
                or GMPLS).<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"> <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">Any drafts/contributions on this topic or
                willingness to help define these would be great.
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"> <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">If there are sufficiently developed ideas,
                we could probably even find time to discuss in our Seoul
                session.  (Or perhaps just informally, if there aren't.)<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"> <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">Thanks,<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">Lou<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"> <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">On 10/19/2016 7:09 PM, Linda Dunbar wrote:<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; Pat,<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; What you said is so true: “The network
                can't provide a bounded or
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; deterministic latency to an unbounded
                flow”.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; DETNET charter starts with<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; The Deterministic Networking (DetNet)
                Working Group focuses on
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; deterministic data paths that operate
                over Layer 2 bridged and Layer 3
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; routed segments, where such paths can
                provide bounds on latency, loss,
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; and packet delay variation (jitter),
                and high reliability<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; If I understand it correctly, DETNET
                focuses on the enabling
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; technologies to ensure deterministic
                latency path across a set of nodes.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; E2E low latency services has many
                issues, such as:<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; ·        There could be “bounded
                flows” that need low latency services<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; mixed with other traffic in the
                network.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; ·        E2E services may have to go
                through many hops, links with<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; some links not supporting DETNET.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; ·        there could be various
                protection/re-route mechanisms which<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; all increase latency.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; ·        etc<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; Some problems specific to WAN include
                how to isolate the various
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; service traffic, and provide maximum
                manageability to upper layers.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; One company in NANOG asked why not use
                ICMP to mark the delay along
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; the path to give upper link, ..<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; Linda<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; Linda<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; *From:*Pat Thaler [<a
                  moz-do-not-send="true"
                  href="mailto:pat.thaler@broadcom.com">mailto:pat.thaler@broadcom.com</a>]<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; *Sent:* Wednesday, October 19, 2016
                5:25 PM<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; *To:* Lou Berger &lt;<a
                  moz-do-not-send="true" href="mailto:lberger@labn.net">lberger@labn.net</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; *Cc:* Alia Atlas &lt;<a
                  moz-do-not-send="true" href="mailto:akatlas@gmail.com">akatlas@gmail.com</a>&gt;;
                Patrick Wetterwald (pwetterw)
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; &lt;<a moz-do-not-send="true"
                  href="mailto:pwetterw@cisco.com">pwetterw@cisco.com</a>&gt;;
                <a moz-do-not-send="true"
                  href="mailto:matthew.bocci@nokia.com">matthew.bocci@nokia.com</a>;
                Pascal Thubert<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; (pthubert) &lt;<a
                  moz-do-not-send="true"
                  href="mailto:pthubert@cisco.com">pthubert@cisco.com</a>&gt;;
                <a moz-do-not-send="true" href="mailto:detnet@ietf.org">detnet@ietf.org</a>;
                <a moz-do-not-send="true" href="mailto:dlnex@ietf.org">
                  dlnex@ietf.org</a>; <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; Linda Dunbar &lt;<a
                  moz-do-not-send="true"
                  href="mailto:linda.dunbar@huawei.com">linda.dunbar@huawei.com</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; *Subject:* Re: [Detnet] FW: New Non-WG
                Mailing List: DLNEX --
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; Discussion of reliable and
                deterministic latency attributes<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; We have been having recent discussions
                about latency such as what type
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; of latency is important.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; As far as the "feasibility exercise
                for achieving reliable and
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; deterministic latency through a
                network element or a segment" that
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; overlaps very much what DetNet and
                IEEE 802.1 TSN have been doing. I
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; believe we have already shown that it
                is feasible and are not on
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; specifying how to do that. I'm
                concerned about the overlap between
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; what that paragraph describes and our
                work.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; There could be useful work on
                communication from the upper layer of
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; the flow characteristics, behavior and
                requirements. There probably is
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; some gap to fill that would help our
                work. I'm concerned that the list
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; description focuses only on exposing
                lower layer characteristics to
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; the upper layer. The network can't
                provide a bounded or deterministic
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; latency to an unbounded flow - to
                determine what latency can be
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; provided, one has to know something
                about the bandwidth utilization of
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; the flow.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; Regards,<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; Pat<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; On Wed, Oct 19, 2016 at 1:59 PM, Lou
                Berger &lt;<a moz-do-not-send="true"
                  href="mailto:lberger@labn.net">lberger@labn.net</a>
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; &lt;<a moz-do-not-send="true"
                  href="mailto:lberger@labn.net">mailto:lberger@labn.net</a>&gt;&gt;
                wrote:<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     Hi Alia,<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;         Overlap looks likely.  I hope
                that when it does occur, you send<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     folks over here to contribute --
                additional input / WG participation<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     would be great!  (For folks not
                familiar with DetNet, check out our<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     charter at
                <a moz-do-not-send="true"
                  href="https://datatracker.ietf.org/wg/detnet/charter/">https://datatracker.ietf.org/wg/detnet/charter/</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="https://datatracker.ietf.org/wg/detnet/charter/">https://datatracker.ietf.org/wg/detnet/charter/</a>&gt;)<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     I expect we'll have some good data
                plane centric discussions at this<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     meeting, for those who may be
                interested (there's even still time to<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     submit related drafts!)<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     Cheers,<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     Lou<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     DetNet Co-chair<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     On 10/19/2016 11:46 AM, Alia Atlas
                wrote:<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; Hi Patrick,<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; The discussion intended on
                dlnex, a non-WG mailing list, is, I<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     think,<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; broader - spanning the range
                of communications between upper layer<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; applications and the
                network.  It is not clear yet what work might<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; develop.  Be sure that I will
                be watching for any specific overlap<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; with DetNet.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; I feel that it is useful to
                make it easy for groups to have a<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     list to<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; brainstorm about their ideas
                before work is mature enough to<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     consider<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; for standardization.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; Regards,<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; Alia<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; On Wed, Oct 19, 2016 at 8:17
                AM, Patrick Wetterwald (pwetterw)<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt; &lt;<a moz-do-not-send="true"
href="mailto:pwetterw@cisco.com%20%3Cmailto:pwetterw@cisco.com">pwetterw@cisco.com
                  &lt;mailto:pwetterw@cisco.com</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:pwetterw@cisco.com%20%3Cmailto:pwetterw@cisco.com">mailto:pwetterw@cisco.com
                  &lt;mailto:pwetterw@cisco.com</a>&gt;&gt;&gt; wrote:<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     Can someone explain me
                why this mailing list is created<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     outside of<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     DetNet?<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     This sounds like a subset
                of Detnet no?<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     Thanks,<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     Patrick<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     On 19/10/2016, 07:56,
                "detnet on behalf of Pascal Thubert<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     (pthubert)" &lt;<a
                  moz-do-not-send="true"
                  href="mailto:detnet-bounces@ietf.org">detnet-bounces@ietf.org</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:detnet-bounces@ietf.org">mailto:detnet-bounces@ietf.org</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     &lt;<a
                  moz-do-not-send="true"
                  href="mailto:detnet-bounces@ietf.org">mailto:detnet-bounces@ietf.org</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:detnet-bounces@ietf.org">mailto:detnet-bounces@ietf.org</a>&gt;&gt;
                on behalf of
                <a moz-do-not-send="true"
                  href="mailto:pthubert@cisco.com">pthubert@cisco.com</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:pthubert@cisco.com">mailto:pthubert@cisco.com</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     &lt;<a
                  moz-do-not-send="true"
                  href="mailto:pthubert@cisco.com%20%3Cmailto:pthubert@cisco.com">mailto:pthubert@cisco.com
                  &lt;mailto:pthubert@cisco.com</a>&gt;&gt;&gt; wrote:<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         From: IETF-Announce<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     [<a moz-do-not-send="true"
                  href="mailto:ietf-announce-bounces@ietf.org">mailto:ietf-announce-bounces@ietf.org</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:ietf-announce-bounces@ietf.org">mailto:ietf-announce-bounces@ietf.org</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     &lt;<a
                  moz-do-not-send="true"
                  href="mailto:ietf-announce-bounces@ietf.org">mailto:ietf-announce-bounces@ietf.org</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:ietf-announce-bounces@ietf.org">mailto:ietf-announce-bounces@ietf.org</a>&gt;&gt;]
                On Behalf Of IETF<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     Secretariat<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         Sent: mardi 18
                octobre 2016 22:36<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         To: IETF Announcement
                List &lt;<a moz-do-not-send="true"
                  href="mailto:ietf-announce@ietf.org">ietf-announce@ietf.org</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:ietf-announce@ietf.org">mailto:ietf-announce@ietf.org</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     &lt;<a
                  moz-do-not-send="true"
                  href="mailto:ietf-announce@ietf.org%20%3Cmailto:ietf-announce@ietf.org">mailto:ietf-announce@ietf.org
                  &lt;mailto:ietf-announce@ietf.org</a>&gt;&gt;&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         Cc:
                <a moz-do-not-send="true"
                  href="mailto:matthew.bocci@nokia.com">matthew.bocci@nokia.com</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:matthew.bocci@nokia.com">mailto:matthew.bocci@nokia.com</a>&gt;
                &lt;<a moz-do-not-send="true"
                  href="mailto:matthew.bocci@nokia.com">mailto:matthew.bocci@nokia.com</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:matthew.bocci@nokia.com">mailto:matthew.bocci@nokia.com</a>&gt;&gt;;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;    
                <a moz-do-not-send="true" href="mailto:dlnex@ietf.org">dlnex@ietf.org</a>
                &lt;<a moz-do-not-send="true"
                  href="mailto:dlnex@ietf.org">mailto:dlnex@ietf.org</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:dlnex@ietf.org%20%3Cmailto:dlnex@ietf.org">mailto:dlnex@ietf.org
                  &lt;mailto:dlnex@ietf.org</a>&gt;&gt;;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;    
                <a moz-do-not-send="true"
                  href="mailto:linda.dunbar@huawei.com">linda.dunbar@huawei.com</a>
                &lt;<a moz-do-not-send="true"
                  href="mailto:linda.dunbar@huawei.com">mailto:linda.dunbar@huawei.com</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     &lt;<a
                  moz-do-not-send="true"
                  href="mailto:linda.dunbar@huawei.com">mailto:linda.dunbar@huawei.com</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:linda.dunbar@huawei.com">mailto:linda.dunbar@huawei.com</a>&gt;&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         Subject: New Non-WG
                Mailing List: DLNEX -- Discussion of<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     reliable and
                deterministic latency attributes<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         A new IETF
                non-working group email list has been created.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         List
                <a moz-do-not-send="true"
                  href="mailto:address:dlnex@ietf.org">address:dlnex@ietf.org</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:address%3Adlnex@ietf.org">mailto:address%3Adlnex@ietf.org</a>&gt;
                &lt;<a moz-do-not-send="true"
                  href="mailto:address%3Adlnex@ietf.org">mailto:address%3Adlnex@ietf.org</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:address%253Adlnex@ietf.org">mailto:address%253Adlnex@ietf.org</a>&gt;&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         Archive:<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;    
                <a moz-do-not-send="true"
                  href="https://mailarchive.ietf.org/arch/search/?email_list=dlnex">https://mailarchive.ietf.org/arch/search/?email_list=dlnex</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     &lt;<a
                  moz-do-not-send="true"
                  href="https://mailarchive.ietf.org/arch/search/?email_list=dlnex">https://mailarchive.ietf.org/arch/search/?email_list=dlnex</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         To subscribe:<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;    
                <a moz-do-not-send="true"
                  href="https://www.ietf.org/mailman/listinfo/dlnex">https://www.ietf.org/mailman/listinfo/dlnex</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="https://www.ietf.org/mailman/listinfo/dlnex">https://www.ietf.org/mailman/listinfo/dlnex</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     &lt;<a
                  moz-do-not-send="true"
                  href="https://www.ietf.org/mailman/listinfo/dlnex">https://www.ietf.org/mailman/listinfo/dlnex</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         Purpose:<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         DLNEX is to discuss
                various latency characteristics that can<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     be exposed by network
                elements or segments and to explore if<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     there<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     are any latency related
                attributes that can be utilized by upper<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     layer. For example, could
                there be latency exposure that upper<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     layer can utilize to plan
                how to distribute their content to the<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     right edges to achieve
                optimal user experience? Or something<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     used<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     by Interactive AR
                controller to optimize their services? Is<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     there<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     any value gained by upper
                layer expressing that they would<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     rather<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     have fixed latency than
                losing packets?<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         The discussion is to
                answer questions like: are there any<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     effective
                interaction/coordination between upper layer and lower<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     layer to achieve more
                efficient optimization for latency<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     sensitive<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     services?<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         This discussion group
                is also a place to showcase the<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     state of<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     the arts in latency
                optimized switching architecture and<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     interface<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     designs, as the
                feasibility exercise for achieving reliable and<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     deterministic latency
                through a network element or a segment.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     Those latency exposures
                are the foundation for (future) latency<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     optimized control plane.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
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            <p class="MsoNormal"><span
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          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;         For additional
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          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     administrators.<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;        
                _______________________________________________<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
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            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
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                  href="mailto:detnet@ietf.org%20%3Cmailto:detnet@ietf.org">mailto:detnet@ietf.org
                  &lt;mailto:detnet@ietf.org</a>&gt;&gt;<o:p></o:p></span></p>
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            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
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style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
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                  moz-do-not-send="true"
                  href="https://www.ietf.org/mailman/listinfo/detnet">https://www.ietf.org/mailman/listinfo/detnet</a>&gt;<o:p></o:p></span></p>
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          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;    
                _______________________________________________<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;     detnet mailing list<o:p></o:p></span></p>
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          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
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                &lt;<a moz-do-not-send="true"
                  href="mailto:detnet@ietf.org">mailto:detnet@ietf.org</a>&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &lt;<a moz-do-not-send="true"
                  href="mailto:detnet@ietf.org%20%3Cmailto:detnet@ietf.org">mailto:detnet@ietf.org
                  &lt;mailto:detnet@ietf.org</a>&gt;&gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;    
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                  href="https://www.ietf.org/mailman/listinfo/detnet">https://www.ietf.org/mailman/listinfo/detnet</a><o:p></o:p></span></p>
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            <p class="MsoNormal"><span
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                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
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                  moz-do-not-send="true"
                  href="https://www.ietf.org/mailman/listinfo/detnet">https://www.ietf.org/mailman/listinfo/detnet</a>&gt;<o:p></o:p></span></p>
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          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;     &gt;<o:p></o:p></span></p>
          </div>
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                _______________________________________________<o:p></o:p></span></p>
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            <p class="MsoNormal"><span
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          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt; 
                <o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
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                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;<o:p> </o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;
                _______________________________________________<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
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                lang="EN-US">&gt; detnet mailing list<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;
                <a moz-do-not-send="true" href="mailto:detnet@ietf.org">detnet@ietf.org</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US">&gt;
                <a moz-do-not-send="true"
                  href="https://www.ietf.org/mailman/listinfo/detnet">https://www.ietf.org/mailman/listinfo/detnet</a><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;" lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><span
                style="font-size:11.0pt;font-family:&quot;Times New
                Roman&quot;,&quot;serif&quot;" lang="EN-US"> </span><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;"
                lang="EN-US"><o:p></o:p></span></p>
          </div>
        </blockquote>
        <p class="MsoNormal"><span lang="EN-US"><br>
            <br>
            <o:p></o:p></span></p>
        <pre><span lang="EN-US">-- <o:p></o:p></span></pre>
        <pre><span lang="EN-US">________________________________________________________________<o:p></o:p></span></pre>
        <pre><span lang="EN-US">Bob Briscoe                               <a moz-do-not-send="true" href="http://bobbriscoe.net/">http://bobbriscoe.net/</a><o:p></o:p></span></pre>
      </div>
    </blockquote>
    <br>
    <pre class="moz-signature" cols="72">-- 
________________________________________________________________
Bob Briscoe                               <a class="moz-txt-link-freetext" href="http://bobbriscoe.net/">http://bobbriscoe.net/</a></pre>
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From nobody Mon Nov 14 20:05:22 2016
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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: "5gangip@ietf.org" <5gangip@ietf.org>, "detnet@ietf.org" <detnet@ietf.org>, "routing-discussion@ietf.org" <routing-discussion@ietf.org>, "nfvrg@irtf.org" <nfvrg@irtf.org>
Thread-Topic: Network slicing side meeting agenda (tonight 19:00 in Studio 3)
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Date: Tue, 15 Nov 2016 04:05:02 +0000
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Cc: Stewart Bryant <stewart.bryant@gmail.com>, Mach Chen <mach.chen@huawei.com>
Subject: [Detnet] Network slicing side meeting agenda (tonight 19:00 in Studio 3)
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Dear all,

The network slicing side meeting will be held today 19:00-21:00 in room Stu=
dio 3.

Here is the agenda of the meeting:

1. Network slicing problem statement	15 mins
https://tools.ietf.org/html/draft-dong-network-slicing-problem-statement-00
Stewart Bryant

2. Autonomic slice networking	15 mins
https://tools.ietf.org/html/draft-galis-anima-autonomic-slice-networking-00
Alex Galis

3. Architecture for delivering multicast mobility services using network sl=
icing  15 mins  =20
https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slicing-00
Truong-Xuan Do

4. ACTN and network slicing	15 mins
https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01
Daniele Ceccarelli

5. Open Discussion  60 mins


Best regards,
Jie/Stewart/Mach

-----Original Message-----
From: detnet [mailto:detnet-bounces@ietf.org] On Behalf Of Dongjie (Jimmy)
Sent: Tuesday, November 08, 2016 7:57 PM
To: 5gangip@ietf.org; detnet@ietf.org; routing-discussion@ietf.org; nfvrg@i=
rtf.org; draft-galis-anima-autonomic-slice-networking@ietf.org; draft-vonhu=
go-5gangip-ip-issues@ietf.org; draft-xuan-dmm-multicast-mobility-slicing@ie=
tf.org; draft-ietf-teas-actn-framework@ietf.org
Cc: Stewart Bryant; Mach Chen
Subject: [Detnet] Network slicing side meeting at IETF97

Dear all,

Following on from the recent discussions on network slicing, it seems usefu=
l to have a side meeting during next week's IETF to see if we can establish=
 a common view on the definition and scope of network slicing, what work is=
 currently being undertaken in the IETF on this problem space, and what (if=
 any) new IETF work would be needed to create deployable network solutions.

To that end we propose a side meeting on the topic of network slicing and h=
ave got a room to have this discussion on the Tuesday evening of the IETF w=
eek.
=20
Meeting Name: 5G Network Slicing Side Meeting Assigned Room: Studio 3 Assig=
ned Date: 11/15/2016 (Tuesday) Assigned Time: 19:00 - 21:00

To make the most of this time, it would be useful if a few of us introduce =
to the rest our thoughts on the subject before having an open discussion. W=
e have a projector, and so those introducing an aspect of this problem can =
use slides, but slides are not required.

The topics we have so far are:
 =20
1.  Network slicing problem statement  - Stewart Bryant
https://tools.ietf.org/html/draft-dong-network-slicing-problem-statement-00

2.  Autonomic slicing networking  - Alex Galis
https://tools.ietf.org/html/draft-galis-anima-autonomic-slice-networking-00

3.  Multicast and mobility service on demand with network slicing  - Truong=
-Xuan Do
https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slicing-00

If you have experiences/understanding of network slicing related use cases,=
 requirements or problems etc., we welcome their inclusion in the agenda to=
 help bring the rest up to speed.

Following that, we propose an open discussion to establish whether there ar=
e work items that we need to get included in any existing IETF WG charter, =
or whether we need to initiate any new work in the IETF.

If you have comments on our proposed agenda, or you want to introduce an as=
pect of the problem to the rest of the group, then please contact us with n=
ame of the topic and how long you need to talk about it.

Many thanks and best regards,

Jie/Stewart/Mach


> -----Original Message-----
> From: Stewart Bryant [mailto:stewart.bryant@gmail.com]
> Sent: Tuesday, November 01, 2016 11:22 PM
> To: 5gangip@ietf.org; detnet@ietf.org; nfvrg@irtf.org;=20
> draft-galis-anima-autonomic-slice-networking@ietf.org;
> draft-vonhugo-5gangip-ip-issues@ietf.org;
> draft-xuan-dmm-multicast-mobility-slicing@ietf.org;
> draft-ietf-teas-actn-framework@ietf.org
> Cc: Mach Chen <mach.chen@huawei.com>; Dongjie (Jimmy)=20
> <jie.dong@huawei.com>
> Subject: Network Slicing - a suggestion that we meet to discuss in=20
> Seoul
>=20
>=20
>=20
>=20
> Hi,
>=20
> We were trying to pull together a problem statement for network=20
> slicing in a 5G context to understand how well the current IETF=20
> protocols address this problem, what their short comings might be, and=20
> what IETF work is necessary to have a deployable protocol suite to addres=
s this need.
>=20
> We have set down our first thoughts in
> https://tools.ietf.org/html/draft-dong-network-slicing-problem-stateme
> nt-00
>=20
> We find that there are a number of groups doing similar work=20
> throughout the IETF.
>=20
> The following comprehensive draft was directed at the ANIMA WG=20
> https://datatracker.ietf.org/doc/draft-galis-anima-autonomic-slice-net
> working/
>=20
> https://tools.ietf.org/html/draft-vonhugo-5gangip-ip-issues-00
> is a detailed discussion the position of network slicing in a contest=20
> of next generation networks
>=20
> https://tools.ietf.org/html/draft-xuan-dmm-multicast-mobility-slicing-
> 00 looks at multicasting in a sliced context
>=20
> and
>=20
> https://tools.ietf.org/html/draft-ietf-teas-actn-framework-01
> looks at slicing in a context of traffic engineering.
>=20
> Our thoughts are that network slicing spans a number of deployment=20
> scenarios, and has a number of diverse applications, ranging from=20
> fragile applications, through to providing enhanced security and availabi=
lity.
>=20
> Elements of the problem and the resultant solution have a close=20
> affinity to DETNET. There is clearly an affinity with VPN=20
> technologies, although none of the existing VPNs provide the degree of is=
olation that we think is required.
>=20
> We note that there seems to be no natural home for all of the aspects=20
> of this problem.
>=20
> It therefore seems that if would be a good idea for those interested=20
> in this problem to get together at some point during IETF to swap=20
> notes and share our views on the problem space and how to move forward wi=
th addressing it.
>=20
> Is there any interest in meeting up to discuss this in Seoul?
>=20
> Best regards
>=20
> Stewart/Mach/Jie
>=20
>=20
>=20

_______________________________________________
detnet mailing list
detnet@ietf.org
https://www.ietf.org/mailman/listinfo/detnet


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Subject: [Detnet] Help wanted in detnet
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Hi all in mpls and teas groups (consolidating earlier posting only on =
mpls)

Over in detnet wg we are working on transporting deterministic Ethernet =
(e.g. from 802.1TSN LANs) across the wide area for applications such as =
industrial control and audio/video broadcast. One of the key assumptions =
is that the underlying transport already has sufficient scheduling and =
queueing support to allow proper extension of time-sensitive (or even =
time-critical) traffic over, for example, MPLS.

To help us validate that assumption, please can someone volunteer to =
help us? Feel free to come over to the detnet list. Recommendations on =
exactly which flavour(s) of MPLS and/or configurations and/or gotchas =
would be most welcome.

The slides in question are here =
https://www.ietf.org/proceedings/97/slides/slides-97-detnet-detnet-data-pl=
ane-02.pptx =
<https://www.ietf.org/proceedings/97/slides/slides-97-detnet-detnet-data-p=
lane-02.pptx>, slide 4.

Many thanks in anticipation.

John





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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">Hi all in mpls and teas groups (consolidating earlier posting =
only on mpls)<div class=3D""><br class=3D""></div><div class=3D""><div =
class=3D"">Over in detnet wg we are working on transporting =
deterministic Ethernet (e.g. from 802.1TSN LANs) across the wide area =
for applications such as industrial control and audio/video broadcast. =
One of the key assumptions is that the underlying transport already has =
sufficient scheduling and queueing support to allow proper extension of =
time-sensitive (or even time-critical) traffic over, for example, =
MPLS.</div><div class=3D""><br class=3D""></div><div class=3D"">To help =
us validate that assumption, please can someone volunteer to help us? =
Feel free to come over to the detnet list. Recommendations on exactly =
which flavour(s) of MPLS and/or configurations and/or gotchas would be =
most welcome.</div><div class=3D""><br class=3D""></div><div =
class=3D"">The slides in question are here&nbsp;<a =
href=3D"https://www.ietf.org/proceedings/97/slides/slides-97-detnet-detnet=
-data-plane-02.pptx" =
class=3D"">https://www.ietf.org/proceedings/97/slides/slides-97-detnet-det=
net-data-plane-02.pptx</a>, slide 4.</div><div class=3D""><br =
class=3D""></div><div class=3D"">Many thanks in anticipation.</div><br =
class=3D""><div class=3D"">John</div><div class=3D""><div style=3D"color: =
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From: Umut Keten <umut.keten@turktelekom.com.tr>
To: John Dowdell <john.dowdell.ietf@gmail.com>, "detnet@ietf.org" <detnet@ietf.org>
Thread-Topic: [DKIM - Gonderici Dogrulama Sorunu] [mpls] Help wanted in detnet
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Subject: Re: [Detnet] [DKIM - Gonderici Dogrulama Sorunu] [mpls] Help wanted in detnet
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John hi,


To transport the below I wouldn't rely too much on mpls. jitter/pdv is deva=
stating on mpls and ntp is not precise enough (1588v2 is not good enough).

To overcome this I build a DTM cloud over mpls and also do the rsvp-te equi=
valant (dip-te) over this DTM cloud.

99,999% QoS and 100% bw guarantee.
I can carry clock synchronisation(fase + frequence) 22 hops over mpls below=
 100ns.

I would advise to leave MPLS for what it is and to use DTM over MPLS for su=
ch data.


Krgrds,
Umut


Samsung Galaxy ak=B9ll=B9 telefonumdan g=F6nderildi.





[tt_logo_]

Umut Keten


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=DCr=FCn ve Servis Sunumu Direkt=F6rl=FC=BB=FC
Teknoloji Genel M=FCd=FCr Yard=B9mc=B9l=B9=BB=B9

umut.keten@turktelekom.com.tr

03125551931
+90 (553) 349 96 69



[cid:84d837adf9cd42bcb226a12cd501a184]<http://www.tivibuspor.com.tr/>


Yasal Uyar=B9 :
Bu elektronik posta i=BAbu linki kullanarak ula=BAabilece=BBiniz Ko=BAul ve=
 =AAartlar d=F6k=FCman=B9na tabidir :
www.turktelekom.com.tr/tt/portal/email-yasal-uyari<http://www.turktelekom.c=
om.tr/tt/portal/email-yasal-uyari>

-------- Orijinal mesaj --------
Ba=BAlang=B9=E7 tarihi: John Dowdell <john.dowdell.ietf@gmail.com>
Tarih: 15.11.2016 08:33 (GMT+03:00)
Al=B9c=B9: teas@ietf.org, mpls@ietf.org, detnet@ietf.org
Konu: [DKIM - Gonderici Dogrulama Sorunu] [mpls] Help wanted in detnet

Hi all in mpls and teas groups (consolidating earlier posting only on mpls)

Over in detnet wg we are working on transporting deterministic Ethernet (e.=
g. from 802.1TSN LANs) across the wide area for applications such as indust=
rial control and audio/video broadcast. One of the key assumptions is that =
the underlying transport already has sufficient scheduling and queueing sup=
port to allow proper extension of time-sensitive (or even time-critical) tr=
affic over, for example, MPLS.

To help us validate that assumption, please can someone volunteer to help u=
s? Feel free to come over to the detnet list. Recommendations on exactly wh=
ich flavour(s) of MPLS and/or configurations and/or gotchas would be most w=
elcome.

The slides in question are here https://www.ietf.org/proceedings/97/slides/=
slides-97-detnet-detnet-data-plane-02.pptx, slide 4.

Many thanks in anticipation.

John





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<div>
<div>John hi,</div>
<div><br>
</div>
<div><br>
</div>
<div>To transport the below I wouldn't rely too much on mpls. jitter/pdv is=
 devastating on mpls and ntp is not precise enough (1588v2 is not good enou=
gh).</div>
<div><br>
</div>
<div>To overcome this I build a DTM cloud over mpls and also do the rsvp-te=
 equivalant (dip-te) over this DTM cloud.</div>
<div><br>
</div>
<div>99,999% QoS and 100% bw guarantee.</div>
<div>I can carry clock synchronisation(fase &#43; frequence) 22 hops over m=
pls below 100ns.</div>
<div><br>
</div>
<div>I would advise to leave MPLS for what it is and to use DTM over MPLS f=
or such data.</div>
<div><br>
</div>
<div><br>
</div>
<div>Krgrds,</div>
</div>
<div>Umut</div>
<div><br>
</div>
<div><br>
</div>
<div id=3D"composer_signature">
<div dir=3D"auto" style=3D"font-size:85%; color:#575757">Samsung Galaxy ak=
=B9ll=B9 telefonumdan g=F6nderildi.</div>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
<br>
<span id=3D"ppe_54">
<p>
<table cellspacing=3D"0" cellpadding=3D"0" width=3D"600" border=3D"0">
<tbody>
<tr>
<td valign=3D"middle">
<table cellspacing=3D"0" cellpadding=3D"0" border=3D"0">
<tbody>
<tr>
<td style=3D"FONT-SIZE: 0px; FONT-FAMILY: trebuchet MS" valign=3D"top"><img=
 style=3D"MARGIN: 0px" border=3D"0" alt=3D"tt_logo_" src=3D"cid:c23c5c35bf0=
e432ba7df635e90ffd4aa"></td>
<td height=3D"129" width=3D"20"></td>
<td style=3D"FONT-FAMILY: trebuchet MS; COLOR: rgb(92,149,201)" height=3D"1=
10">
<table style=3D"FONT-SIZE: 13px; HEIGHT: 161px; FONT-FAMILY: trebuchet MS; =
COLOR: rgb(143,143,143); WIDTH: 331px" cellspacing=3D"0" cellpadding=3D"0" =
border=3D"0">
<tbody>
<tr>
<td style=3D"FONT-SIZE: 16px; FONT-WEIGHT: bold; COLOR: rgb(0,0,0)" colspan=
=3D"3">
<p class=3D"MsoNormal" style=3D"MARGIN: 0cm 0cm 0pt"><b><span style=3D"FONT=
-FAMILY: 'Trebuchet MS',sans-serif; COLOR: black"><font size=3D"2" face=3D"=
Verdana"></font></span></b>&nbsp;</p>
<p class=3D"MsoNormal" style=3D"MARGIN: 0cm 0cm 0pt"><b><span style=3D"FONT=
-FAMILY: 'Trebuchet MS',sans-serif; COLOR: black"><font size=3D"2" face=3D"=
Verdana">Umut Keten</font></span></b></p>
</td>
</tr>
<tr>
<td style=3D"FONT-SIZE: 0px; LINE-HEIGHT: 0px" height=3D"10" colspan=3D"3">=
<font size=3D"2" face=3D"Verdana">&nbsp;</font></td>
</tr>
<tr>
<td style=3D"FONT-SIZE: 12px" colspan=3D"3"><font face=3D"Verdana">=DCr=FCn=
 ve Servis K=B9demli Mimar=B9<br>
</font><font size=3D"2" face=3D"Verdana">=DCr=FCn ve Servis Sunumu Direkt=
=F6rl=FC=BB=FC<br>
<span style=3D"FONT-FAMILY: 'Trebuchet MS',sans-serif"><font face=3D"Verdan=
a">Teknoloji Genel M=FCd=FCr Yard=B9mc=B9l=B9=BB=B9</font></span></font></t=
d>
</tr>
<tr>
<td style=3D"FONT-SIZE: 0px; LINE-HEIGHT: 0px" height=3D"10" colspan=3D"3">=
<font size=3D"2" face=3D"Verdana">&nbsp;</font></td>
</tr>
<tr>
<td style=3D"FONT-SIZE: 12px; FONT-FAMILY: verdana,tahoma,helvetica; VERTIC=
AL-ALIGN: top; FONT-WEIGHT: normal; COLOR: rgb(26,57,103); PADDING-BOTTOM: =
10px; LINE-HEIGHT: 12px">
<a style=3D"FONT-SIZE: 12px; FONT-FAMILY: verdana,tahoma,helvetica; FONT-WE=
IGHT: normal; COLOR: rgb(26,57,103); TEXT-DECORATION: underline; LINE-HEIGH=
T: 12px"><font size=3D"2" face=3D"Arial">umut.keten@turktelekom.com.tr
</font></a></td>
</tr>
<tr>
<td style=3D"FONT-SIZE: 0px; LINE-HEIGHT: 0px" height=3D"10" colspan=3D"3">=
<font size=3D"2" face=3D"Verdana">&nbsp;</font></td>
</tr>
<tr>
<td style=3D"FONT-SIZE: 12px; FONT-FAMILY: verdana,tahoma,helvetica; VERTIC=
AL-ALIGN: top; FONT-WEIGHT: normal; COLOR: rgb(136,136,136); PADDING-BOTTOM=
: 7px; LINE-HEIGHT: 12px">
<font size=3D"2" face=3D"Arial">03125551931 </font></td>
</tr>
<tr>
<td style=3D"FONT-SIZE: 12px; FONT-FAMILY: verdana,tahoma,helvetica; VERTIC=
AL-ALIGN: top; FONT-WEIGHT: normal; COLOR: rgb(136,136,136); PADDING-BOTTOM=
: 7px; LINE-HEIGHT: 12px">
<font size=3D"2" face=3D"Arial">&#43;90 (553) 349 96 69</font> </td>
</tr>
</tbody>
</table>
</td>
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</tbody>
</table>
</td>
</tr>
<tr>
<td style=3D"FONT-SIZE: 13px; FONT-FAMILY: trebuchet MS; COLOR: rgb(0,0,0);=
 PADDING-TOP: 10px">
<p style=3D"FONT-FAMILY: trebuchet MS; COLOR: rgb(116,116,116)"><strong><sp=
an style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS',sans-serif; COLOR:=
 #747474"><a href=3D"http://www.tivibuspor.com.tr/"><img style=3D"MARGIN: 0=
px" border=3D"0" alt=3D"" src=3D"cid:84d837adf9cd42bcb226a12cd501a184"></a>=
</span></strong></p>
</td>
</tr>
</tbody>
</table>
</p>
<p><span style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS',sans-serif; =
COLOR: #747474"><font color=3D"#808080" size=3D"1"><strong>Yasal Uyar=B9 :<=
br>
Bu elektronik posta i=BAbu linki kullanarak ula=BAabilece=BBiniz Ko=BAul ve=
 =AAartlar d=F6k=FCman=B9na tabidir :<br>
</strong></font><a href=3D"http://www.turktelekom.com.tr/tt/portal/email-ya=
sal-uyari" target=3D"_blank"><font color=3D"#0066cc" size=3D"1" face=3D"Ari=
al"><strong>www.turktelekom.com.tr/tt/<wbr>portal/email-yasal-uyari</strong=
></font></a></span></p>
</span>-------- Orijinal mesaj --------</div>
<div>Ba=BAlang=B9=E7 tarihi: John Dowdell &lt;john.dowdell.ietf@gmail.com&g=
t; </div>
<div>Tarih: 15.11.2016 08:33 (GMT&#43;03:00) </div>
<div>Al=B9c=B9: teas@ietf.org, mpls@ietf.org, detnet@ietf.org </div>
<div>Konu: [DKIM - Gonderici Dogrulama Sorunu] [mpls] Help wanted in detnet=
 </div>
<div><br>
</div>
<div>Hi all in mpls and teas groups (consolidating earlier posting only on =
mpls)
<div class=3D""><br class=3D"">
</div>
<div class=3D"">
<div class=3D"">Over in detnet wg we are working on transporting determinis=
tic Ethernet (e.g. from 802.1TSN LANs) across the wide area for application=
s such as industrial control and audio/video broadcast. One of the key assu=
mptions is that the underlying transport
 already has sufficient scheduling and queueing support to allow proper ext=
ension of time-sensitive (or even time-critical) traffic over, for example,=
 MPLS.</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">To help us validate that assumption, please can someone vol=
unteer to help us? Feel free to come over to the detnet list. Recommendatio=
ns on exactly which flavour(s) of MPLS and/or configurations and/or gotchas=
 would be most welcome.</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">The slides in question are here&nbsp;<a href=3D"https://www=
.ietf.org/proceedings/97/slides/slides-97-detnet-detnet-data-plane-02.pptx"=
 class=3D"">https://www.ietf.org/proceedings/97/slides/slides-97-detnet-det=
net-data-plane-02.pptx</a>, slide 4.</div>
<div class=3D""><br class=3D"">
</div>
<div class=3D"">Many thanks in anticipation.</div>
<br class=3D"">
<div class=3D"">John</div>
<div class=3D"">
<div style=3D"color:rgb(0,0,0); font-family:Helvetica; font-size:12px; font=
-style:normal; font-weight:normal; letter-spacing:normal; orphans:auto; tex=
t-align:start; text-indent:0px; text-transform:none; white-space:normal; wi=
dows:auto; word-spacing:0px">
<br class=3D"">
</div>
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:12px; font-style:normal; font-weight:normal; letter-spacing:normal; orphan=
s:auto; text-align:start; text-indent:0px; text-transform:none; white-space=
:normal; widows:auto; word-spacing:0px">
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Thread-Topic: [DKIM - Gonderici Dogrulama Sorunu] [mpls] Help wanted in detnet
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Subject: Re: [Detnet] [DKIM - Gonderici Dogrulama Sorunu] [mpls] Help wanted in detnet
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Hereby I am adding some topologies to show what we did at Turk Telekom:

>From A to B with RSVP-TE in MPLS you need to traffic engineer all the hops =
in between. The problem is that the MPLS network is always dynamic, no matt=
er how much you plan, data from other services and the load of that data wi=
ll cause jitter/pdv and in some scenarios even packetdrops. You will never =
be able to guarantee sensitive data such as contribution media or time sens=
itive data.

Please see Picture 1 (=DEekil 1)
[cid:image002.jpg@01D23F22.670AE190]

To overcome this we created another layer above MPLS (Picture 2/ =DEekil 2)

[cid:image004.jpg@01D23F22.670AE190]
Now from A to B it uses DTM (please see wiki or other sources for DTM detai=
ls) which is transmission based and the data can be transported 1+1 hitless=
 or dynamic protected (50ms)
The protection path we have automated, SPF algortithm with colour based reg=
ion tagging so the secondary path automatically builds making sure that a t=
otally different route is used. (son o more RSVP-TE hustle)

Due to the fact that DTM is transmission based there are no spikes in data =
and the reserved BW is always the same(CBR), from A to B there will be a ji=
tterles data transfer due to FEC (Forwarding Equilavant Class) on MPLS and =
minimum sampling algorithm of DTM.

[cid:image011.jpg@01D23F22.670AE190]

[cid:image012.jpg@01D23F22.670AE190]

100% QoS and BW was achieved for a 1 week stress test. During this week sch=
eduled maintenances where performed in Trabzon and Adana on transmission la=
yer and MPLS layer. There was impact on the MPLS and Transmission layer but=
 no impact on the transported data on the DTM layer.


We are planning to use this DTM layer for LTE Broadcast and possibly also D=
VB-T2 transport in the future.


Krgrds,
Umut






[tt_logo_]

Umut Keten


=DCr=FCn ve Servis K=FDdemli Mimar=FD
=DCr=FCn ve Servis Sunumu Direkt=F6rl=FC=F0=FC
Teknoloji Genel M=FCd=FCr Yard=FDmc=FDl=FD=F0=FD

umut.keten@turktelekom.com.tr

03125551931
+90 (553) 349 96 69



[cid:cf8133f83db24943bdaaada5ad985b5f]<http://www.tivibuspor.com.tr/>


Yasal Uyar=FD :
Bu elektronik posta i=FEbu linki kullanarak ula=FEabilece=F0iniz Ko=FEul ve=
 =DEartlar d=F6k=FCman=FDna tabidir :
www.turktelekom.com.tr/tt/portal/email-yasal-uyari<http://www.turktelekom.c=
om.tr/tt/portal/email-yasal-uyari>
From: Umut Keten
Sent: Tuesday, November 15, 2016 8:53 AM
To: John Dowdell <john.dowdell.ietf@gmail.com>; detnet@ietf.org
Subject: YNT: [DKIM - Gonderici Dogrulama Sorunu] [mpls] Help wanted in det=
net

John hi,


To transport the below I wouldn't rely too much on mpls. jitter/pdv is deva=
stating on mpls and ntp is not precise enough (1588v2 is not good enough).

To overcome this I build a DTM cloud over mpls and also do the rsvp-te equi=
valant (dip-te) over this DTM cloud.

99,999% QoS and 100% bw guarantee.
I can carry clock synchronisation(fase + frequence) 22 hops over mpls below=
 100ns.

I would advise to leave MPLS for what it is and to use DTM over MPLS for su=
ch data.


Krgrds,
Umut


Samsung Galaxy ak=FDll=FD telefonumdan g=F6nderildi.


-------- Orijinal mesaj --------
Ba=FElang=FD=E7 tarihi: John Dowdell <john.dowdell.ietf@gmail.com<mailto:jo=
hn.dowdell.ietf@gmail.com>>
Tarih: 15.11.2016 08:33 (GMT+03:00)
Al=FDc=FD: teas@ietf.org<mailto:teas@ietf.org>, mpls@ietf.org<mailto:mpls@i=
etf.org>, detnet@ietf.org<mailto:detnet@ietf.org>
Konu: [DKIM - Gonderici Dogrulama Sorunu] [mpls] Help wanted in detnet

Hi all in mpls and teas groups (consolidating earlier posting only on mpls)

Over in detnet wg we are working on transporting deterministic Ethernet (e.=
g. from 802.1TSN LANs) across the wide area for applications such as indust=
rial control and audio/video broadcast. One of the key assumptions is that =
the underlying transport already has sufficient scheduling and queueing sup=
port to allow proper extension of time-sensitive (or even time-critical) tr=
affic over, for example, MPLS.

To help us validate that assumption, please can someone volunteer to help u=
s? Feel free to come over to the detnet list. Recommendations on exactly wh=
ich flavour(s) of MPLS and/or configurations and/or gotchas would be most w=
elcome.

The slides in question are here https://www.ietf.org/proceedings/97/slides/=
slides-97-detnet-detnet-data-plane-02.pptx, slide 4.

Many thanks in anticipation.

John





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<!--ppd54-->
<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hereby I a=
m adding some topologies to show what we did at Turk Telekom:<br>
<br>
>From A to B with RSVP-TE in MPLS you need to traffic engineer all the hops =
in between. The problem is that the MPLS network is always dynamic, no matt=
er how much you plan, data from other services and the load of that data wi=
ll cause jitter/pdv and in some
 scenarios even packetdrops. You will never be able to guarantee sensitive =
data such as contribution media or time sensitive data.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Please see=
 Picture 1 (=DEekil 1)<br>
</span><img width=3D"756" height=3D"568" id=3D"Resim_x0020_1" src=3D"cid:im=
age002.jpg@01D23F22.670AE190"><span style=3D"font-size:11.0pt;font-family:&=
quot;Calibri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">To overcom=
e this we created another layer above MPLS (Picture 2/ =DEekil 2)<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><img width=3D"750" height=3D"476" id=3D"Resim_x0020_=
2" src=3D"cid:image004.jpg@01D23F22.670AE190"><span style=3D"font-size:11.0=
pt;font-family:&quot;Calibri&quot;,sans-serif;color:#1F497D;mso-fareast-lan=
guage:EN-US"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Now from A=
 to B it uses DTM (please see wiki or other sources for DTM details) which =
is transmission based and the data can be transported
 1&#43;1 hitless or dynamic protected (50ms)<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">The protec=
tion path we have automated, SPF algortithm with colour based region taggin=
g so the secondary path automatically builds making
 sure that a totally different route is used. (son o more RSVP-TE hustle)<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Due to the=
 fact that DTM is transmission based there are no spikes in data and the re=
served BW is always the same(CBR), from A to B
 there will be a jitterles data transfer due to FEC (Forwarding Equilavant =
Class) on MPLS and minimum sampling algorithm of DTM.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D"><img width=3D"563" height=3D"421" id=
=3D"Resim_x0020_4" src=3D"cid:image011.jpg@01D23F22.670AE190"></span><span =
style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;color:=
#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D"><img width=3D"772" height=3D"445" id=
=3D"Picture_x0020_3" src=3D"cid:image012.jpg@01D23F22.670AE190"></span><spa=
n style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,sans-serif;colo=
r:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">100% QoS a=
nd BW was achieved for a 1 week stress test. During this week scheduled mai=
ntenances where performed in Trabzon and Adana
 on transmission layer and MPLS layer. There was impact on the MPLS and Tra=
nsmission layer but no impact on the transported data on the DTM layer.<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">We are pla=
nning to use this DTM layer for LTE Broadcast and possibly also DVB-T2 tran=
sport in the future.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Krgrds,<o:=
p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US">Umut<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p>&nbsp=
;</o:p></span></p>
<div><br>
<br>
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<td style=3D"FONT-SIZE: 12px" colspan=3D"3"><font face=3D"Verdana">=DCr=FCn=
 ve Servis K=FDdemli Mimar=FD<br>
</font><font size=3D"2" face=3D"Verdana">=DCr=FCn ve Servis Sunumu Direkt=
=F6rl=FC=F0=FC<br>
<span style=3D"FONT-FAMILY: 'Trebuchet MS',sans-serif"><font face=3D"Verdan=
a">Teknoloji Genel M=FCd=FCr Yard=FDmc=FDl=FD=F0=FD</font></span></font></t=
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<p style=3D"FONT-FAMILY: trebuchet MS; COLOR: rgb(116,116,116)"><strong><sp=
an style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS',sans-serif; COLOR:=
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<p><span style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Trebuchet MS',sans-serif; =
COLOR: #747474"><font color=3D"#808080" size=3D"1"><strong>Yasal Uyar=FD :<=
br>
Bu elektronik posta i=FEbu linki kullanarak ula=FEabilece=F0iniz Ko=FEul ve=
 =DEartlar d=F6k=FCman=FDna tabidir :<br>
</strong></font><a href=3D"http://www.turktelekom.com.tr/tt/portal/email-ya=
sal-uyari" target=3D"_blank"><font color=3D"#0066cc" size=3D"1" face=3D"Ari=
al"><strong>www.turktelekom.com.tr/tt/<wbr>portal/email-yasal-uyari</strong=
></font></a></span></p>
</span>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span style=3D"font-size:11.0pt;font-family:&quot=
;Calibri&quot;,sans-serif">From:</span></b><span style=3D"font-size:11.0pt;=
font-family:&quot;Calibri&quot;,sans-serif"> Umut Keten
<br>
<b>Sent:</b> Tuesday, November 15, 2016 8:53 AM<br>
<b>To:</b> John Dowdell &lt;john.dowdell.ietf@gmail.com&gt;; detnet@ietf.or=
g<br>
<b>Subject:</b> YNT: [DKIM - Gonderici Dogrulama Sorunu] [mpls] Help wanted=
 in detnet<o:p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<div>
<p class=3D"MsoNormal">John hi,<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">To transport the below I wouldn't rely too much on m=
pls. jitter/pdv is devastating on mpls and ntp is not precise enough (1588v=
2 is not good enough).<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">To overcome this I build a DTM cloud over mpls and a=
lso do the rsvp-te equivalant (dip-te) over this DTM cloud.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">99,999% QoS and 100% bw guarantee.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">I can carry clock synchronisation(fase &#43; frequen=
ce) 22 hops over mpls below 100ns.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">I would advise to leave MPLS for what it is and to u=
se DTM over MPLS for such data.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Krgrds,<o:p></o:p></p>
</div>
</div>
<div>
<p class=3D"MsoNormal">Umut<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div id=3D"composer_signature">
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;color:#575757">Samsu=
ng Galaxy ak=FDll=FD telefonumdan g=F6nderildi.<o:p></o:p></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">-------- Orijinal mesaj --------<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Ba=FElang=FD=E7 tarihi: John Dowdell &lt;<a href=3D"=
mailto:john.dowdell.ietf@gmail.com">john.dowdell.ietf@gmail.com</a>&gt;
<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Tarih: 15.11.2016 08:33 (GMT&#43;03:00) <o:p></o:p><=
/p>
</div>
<div>
<p class=3D"MsoNormal">Al=FDc=FD: <a href=3D"mailto:teas@ietf.org">teas@iet=
f.org</a>, <a href=3D"mailto:mpls@ietf.org">
mpls@ietf.org</a>, <a href=3D"mailto:detnet@ietf.org">detnet@ietf.org</a> <=
o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Konu: [DKIM - Gonderici Dogrulama Sorunu] [mpls] Hel=
p wanted in detnet
<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Hi all in mpls and teas groups (consolidating earlie=
r posting only on mpls)
<o:p></o:p></p>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<div>
<p class=3D"MsoNormal">Over in detnet wg we are working on transporting det=
erministic Ethernet (e.g. from 802.1TSN LANs) across the wide area for appl=
ications such as industrial control and audio/video broadcast. One of the k=
ey assumptions is that the underlying
 transport already has sufficient scheduling and queueing support to allow =
proper extension of time-sensitive (or even time-critical) traffic over, fo=
r example, MPLS.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">To help us validate that assumption, please can some=
one volunteer to help us? Feel free to come over to the detnet list. Recomm=
endations on exactly which flavour(s) of MPLS and/or configurations and/or =
gotchas would be most welcome.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">The slides in question are here&nbsp;<a href=3D"http=
s://www.ietf.org/proceedings/97/slides/slides-97-detnet-detnet-data-plane-0=
2.pptx">https://www.ietf.org/proceedings/97/slides/slides-97-detnet-detnet-=
data-plane-02.pptx</a>, slide 4.<o:p></o:p></p>
</div>
<div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<div>
<p class=3D"MsoNormal">Many thanks in anticipation.<o:p></o:p></p>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<div>
<p class=3D"MsoNormal">John<o:p></o:p></p>
</div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:&quot;Hel=
vetica&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:9.0pt;font-family:&quot;Hel=
vetica&quot;,sans-serif;color:black"><o:p>&nbsp;</o:p></span></p>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
</div>
</div>
</div>
</body>
</html>

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--_009_B81700F985BE844B8DD45271EF5E1524C9C70679S000MBX06turkte_--


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From: Lou Berger <lberger@labn.net>
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Date: Fri, 18 Nov 2016 12:24:00 +0900
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Cc: DetNet Chairs <detnet-chairs@ietf.org>
Subject: [Detnet] Call for volunteers: DetNet data plane solution design team
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All,

As discussed during this week's session, we are reconstituting the Data 
Plane DT to come up with a draft which will propose a DetNet data plane 
solution definition. The solution is expected to follow the recommendations 
documented in draft-ietf-detnet-dp-alt and 
slides-97-detnet-detnet-data-plane-02. The design team scope will be a 
single document, with a -00 version to be delivered by the next IETF. The 
DT will be closed once the document is made a WG draft (or if it fails to 
deliver).

If you are interested in volunteering to actively participate in this 
design team, please send mail to your name and affiliation to the chairs.

Note that it is likely that we will get more volunteers than can be added 
to a design team. Those who are not included in the DT will still be able 
to provide input into the solution as part of normal WG process.

Pat and Lou (Chairs)
Jouni (DT Lead)



