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From: Shyam Sethuram <shyam.ioml@gmail.com>
Date: Thu, 1 Jun 2017 15:42:53 -0700
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To: "John G. Scudder" <jgs@juniper.net>
Cc: "idr@ietf. org" <idr@ietf.org>, mpls@ietf.org,  draft-decraene-idr-next-hop-capability@bgp.nu
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Subject: Re: [mpls] Working Group adoption call for draft-decraene-idr-next-hop-capability-03
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Dear authors,

Some of the language sounds similar to that in draft-ietf-idr-tunnel-encaps.
Did you consider augmenting tunnel-encaps in order to signal EL by
adding a new sub-TLV ? It is a transitive attribute but it has a
Remote Endpoint sub-TLV to bind the capability to the specific nexthop.
(It may require a new "tunnel type" to represent plain MPLS nexthops.)

This would avoid the need to upgrade all the BGP speakers between egress
and ingress. tunnel-encaps also has a Color sub-TLV that can be useful,
for example, when using recursive resoltion, to select a subset of overlay
prefixes that would actually use EL for forwarding.

That said, some nitpicks:
- dependant==>dependent; infact it can be totally avoided and just
call it "Nexthop capabilites"
- that said, it would be better to avoid reusing the term "Capabilities"
for this
attribute though I understand you are trying to draw a parallel with
session capabilities

thanks--shyam

On Thu, May 18, 2017 at 9:32 AM, John G. Scudder <jgs@juniper.net> wrote:

> Hi All,
>
> IDR working group adoption has been requested for
> draft-decraene-idr-next-hop-capability-03. Please send your comments to
> the IDR mailing list before June 2, 2017. Please remember that we need
> affirmative support in order to adopt the draft, so don't be shy.
>
> draft datatracker page: https://datatracker.ietf.org/
> doc/draft-decraene-idr-next-hop-capability/
> slides from IETF-98: https://www.ietf.org/proceedings/98/slides/slides-
> 98-idr-08-bgp-next-hop-dependent-capabilities-00.pdf
>
> Since in part this draft specifies a replacement for the Entropy Label
> Capability Attribute (ELCA) that was defined by the MPLS WG in RFC 6790 and
> deprecated by RFC 7447, I have cc'd the MPLS WG mailing list. Since the
> proposed new attribute is a generic container with the ELCA replacement
> just the first application, the current draft is targeted to IDR and not
> MPLS (this was discussed during IETF-93).
>
> Thanks,
>
> --John
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>

--f403045dcf9ceb9c2a0550edc140
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<div dir=3D"ltr"><div>Dear authors,</div><div><br>Some of the language soun=
ds similar to that in draft-ietf-idr-tunnel-encaps.<br>Did you consider aug=
menting tunnel-encaps in order to signal EL by<br>adding a new sub-TLV ? It=
 is a transitive attribute but it has a<br>Remote Endpoint sub-TLV to bind =
the capability to the specific nexthop.<br>(It may require a new &quot;tunn=
el type&quot; to represent plain MPLS nexthops.)</div><div><br></div><div>T=
his would avoid the need to upgrade all the BGP speakers between egress<br>=
and ingress. tunnel-encaps also has a Color sub-TLV that can be useful,<br>=
for example, when using recursive resoltion, to select a subset of overlay<=
br>prefixes that would actually use EL for forwarding.</div><div><br></div>=
<div>That said, some nitpicks:<br>- dependant=3D=3D&gt;dependent; infact it=
 can be totally avoided and just<br>call it &quot;Nexthop capabilites&quot;=
<br>- that said, it would be better to avoid reusing the term &quot;Capabil=
ities&quot; for this<br>attribute though I understand you are trying to dra=
w a parallel with<br>session capabilities</div><div><br></div><div>thanks--=
shyam<br></div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Thu, May 18, 2017 at 9:32 AM, John G. Scudder <span dir=3D"ltr">&lt;=
<a href=3D"mailto:jgs@juniper.net" target=3D"_blank">jgs@juniper.net</a>&gt=
;</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 =
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hi All,<br>
<br>
IDR working group adoption has been requested for draft-decraene-idr-next-h=
op-<wbr>capability-03. Please send your comments to the IDR mailing list be=
fore June 2, 2017. Please remember that we need affirmative support in orde=
r to adopt the draft, so don&#39;t be shy.<br>
<br>
draft datatracker page: <a href=3D"https://datatracker.ietf.org/doc/draft-d=
ecraene-idr-next-hop-capability/" target=3D"_blank" rel=3D"noreferrer">http=
s://datatracker.ietf.org/<wbr>doc/draft-decraene-idr-next-<wbr>hop-capabili=
ty/</a><br>
slides from IETF-98: <a href=3D"https://www.ietf.org/proceedings/98/slides/=
slides-98-idr-08-bgp-next-hop-dependent-capabilities-00.pdf" target=3D"_bla=
nk" rel=3D"noreferrer">https://www.ietf.org/<wbr>proceedings/98/slides/slid=
es-<wbr>98-idr-08-bgp-next-hop-<wbr>dependent-capabilities-00.pdf</a><br>
<br>
Since in part this draft specifies a replacement for the Entropy Label Capa=
bility Attribute (ELCA) that was defined by the MPLS WG in RFC 6790 and dep=
recated by RFC 7447, I have cc&#39;d the MPLS WG mailing list. Since the pr=
oposed new attribute is a generic container with the ELCA replacement just =
the first application, the current draft is targeted to IDR and not MPLS (t=
his was discussed during IETF-93).<br>
<br>
Thanks,<br>
<br>
--John<br>
______________________________<wbr>_________________<br>
mpls mailing list<br>
<a href=3D"mailto:mpls@ietf.org">mpls@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/mpls" target=3D"_blank" re=
l=3D"noreferrer">https://www.ietf.org/mailman/<wbr>listinfo/mpls</a><br>
</blockquote></div><br></div>

--f403045dcf9ceb9c2a0550edc140--


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From: <bruno.decraene@orange.com>
To: Shyam Sethuram <shyam.ioml@gmail.com>
CC: "idr@ietf. org" <idr@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>, "John G. Scudder" <jgs@juniper.net>, "draft-decraene-idr-next-hop-capability@ietf.org" <draft-decraene-idr-next-hop-capability@ietf.org>
Thread-Topic: [mpls] Working Group adoption call for draft-decraene-idr-next-hop-capability-03
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From nobody Fri Jun  2 13:31:48 2017
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Subject: [mpls] I-D Action: draft-ietf-mpls-spring-lsp-ping-03.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching of the IETF.

        Title           : Label Switched Path (LSP) Ping/Traceroute for Segment Routing Networks with MPLS Dataplane
        Authors         : Nagendra Kumar
                          George Swallow
                          Carlos Pignataro
                          Nobo Akiya
                          Sriganesh Kini
                          Hannes Gredler
                          Mach(Guoyi) Chen
	Filename        : draft-ietf-mpls-spring-lsp-ping-03.txt
	Pages           : 19
	Date            : 2017-06-02

Abstract:
   Segment Routing architecture leverages the source routing and
   tunneling paradigms and can be directly applied to MPLS data plane.
   A node steers a packet through a controlled set of instructions
   called segments, by prepending the packet with a Segment Routing
   header.

   The segment assignment and forwarding semantic nature of Segment
   Routing raises additional consideration for connectivity verification
   and fault isolation in LSP with Segment Routing architecture.  This
   document illustrates the problem and describe a mechanism to perform
   LSP Ping and Traceroute on Segment Routing network over MPLS data
   plane.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-mpls-spring-lsp-ping/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-mpls-spring-lsp-ping-03
https://datatracker.ietf.org/doc/html/draft-ietf-mpls-spring-lsp-ping-03

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-spring-lsp-ping-03


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

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Subject: Re: [mpls] Spencer Dawkins' Discuss on draft-ietf-mpls-tp-shared-ring-protection-05: (with DISCUSS and COMMENT)
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Hello Spencer,

I am back from our holiday.
As promised I will now answer the remaining comments
in-line [Huub]

> ----------------------------------------------------------------------
> DISCUSS:
> ----------------------------------------------------------------------
---8<--- snipped (see my previous response)
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>
> ---------- all the other questions
>
> In this text,
>
>     When the service LSP passes through the interconnected rings, the
>     direction of the working ring tunnels used on both rings SHOULD be
>     the same.  For example, if the service LSP uses the clockwise
> working
>     ring tunnel on Ring1, when the service LSP leaves Ring1 and enters
>     Ring2, the working ring tunnel used on Ring2 SHOULD also follow the
>     clockwise direction.
>
> I'm not understanding why this is a SHOULD, and not a MUST. If the
> direction of the working ring tunnels used on both rings is not the same,
> does this still work?

[Huub] it will still work.
The SHOULD is in particular useful in case of  dual-node interconnected
rings. It ensures that the traffic passes only one of the two 
interconnecting
nodes, and does not pass the link between the two interconnecting nodes.
The traffic will then only be switched to the protection path if the
interconnecting node fails which is in working path.

> If it still works, why does this matter? But, either way, you might
> usefully say something about why this isn't always the right thing to do,
> even if you just give one example. The point of SHOULD is that
> implementers make their own informed decisions, so providing information
> that will inform those decisions seems important.

[Huub] OK, point taken.

> I wanted to call out
>
>     Ring switches MUST be preempted by higher priority RPS requests.
> For
>     example, consider a protection switch that is active due to a manual
>     switch request on the given link, and another protection switch is
>     required due to a failure on another link.  Then an RPS request MUST
>     be generated, the former protection switch MUST be dropped, and the
>     latter protection switch established.
>
>     MSRP mechanism SHOULD support multiple protection switches in the
>     ring, resulting in the ring being segmented into two or more
> separate
>     segments.  This may happen when several RPS requests of the same
>     priority exist in the ring due to multiple failures or external
>     switch commands.
>
> as really good examples of the kind of text I think would help the places
> in this document ("For example", "This may happen when") where no
> examples are given. Thanks for providing those examples!

[Huub] thank you for your advise.

> Ouch. Do I understand from
>
>     o  Protection Switching Mode (M): This 2-bit field indicates the
>        protection switching mode used by the sending node of the RPS
>        message.  This can be used to check that the ring nodes on the
>        same ring use the same protection switching mechanism.  The
>        defined values of the M field are listed as below:
>
>               +------------------+-----------------------------+
>               |  Bits (MSB-LSB)  |   Protecton Switching Mode  |
>               +------------------+-----------------------------+
>               |       0 0        |         Reserved            |
>               |       0 1        |         Wrapping            |
>               |       1 0        |       Short Wrapping        |
>               |       1 1        |         Steering            |
>               +------------------+-----------------------------+
>
> that you already have three protection mechanisms, and have only one
> possible codepoint to allocate for any future optimizations? Assuming
> that "0 0" can be unReserved ...

[Huub] I hope the explanations I provided for the application of
wrapping/short-wrapping/steering show that these are the only
three possible mechanisms.

> Could you clarify what "anyway" means in this text?
>
>     When multiple MS RPS requests exist at the same time addressing
>     different links and there is no higher priority request on the ring,
>     no switch SHOULD be executed and existing switches MUST be dropped.
>     The nodes MUST signal, anyway, the MS RPS request code.

[Huub] good point. To avoid confusion it would be better to
replace the last sentence by:
"The node still SHOULD signal the relevant RPS request".

> I'm seeing that the commands like LP described in section 5.2.1.1  are
> used in the document before these (I'm serious) helpful and clear
> explanations appear. If it's possible to move section 5.2.1.1 up in the
> document, that would be great, but if it isn't possible, a forward
> pointer would be helpful to readers who don't already know what the
> command abbreviations mean.

[Huub] good point, we will take this into account when we make
the revision of the draft.

> I'm really confused by this SHOULD:
>
>     The PSC protocol [RFC6378] is designed for point-to-point LSPs, on
>     which the protection switching can only be performed on one or both
>     of the end points of the LSP.  The RPS protocol is designed for ring
>     tunnels, which consist of multiple ring nodes, and the failure could
>     happen on any segment of the ring, thus RPS SHOULD be capable of
>     identifying and handling the different failures on the ring, and
>     coordinating the protection switching behavior of all the nodes on
>     the ring.
>
> I suspect that's because it's not a 2119 SHOULD, but if people think it
> is, I wouldn't mind understanding why.

[Huub] you are right that is not a 2119 SHOULD,
It would be better to replace "SHOULD be" by "is".
(the protocol has been implemented and the capability has been tested
successfully)

> Section 5.3, "RPS and PSC Comparison on Ring Topology" is really helpful,
> but it appears 43 pages in. Given that I'd expect people to be asking why
> they should implement a new protection switching protocol when they've
> already implemented PSC, I'd think this would be much more useful, early
> in the document.

[Huub] we can move the text up in the draft.

> I'm somewhat confused about the code point allocation strategy in this
> text:
>
>     The RPS Request Field is 8 bits, the allocated values are as
> follows:
>
>         Value       Description               Reference
>        -------  --------------------------- ---------------
>           0     No Request (NR)             this document
>           1     Reverse Request (RR)        this document
>           2     unassigned
>           3     Exercise (EXER)             this document
>           4     unassigned
>           5     Wait-To-Restore (WTR)       this document
>           6     Manual Switch (MS)          this document
>          7-10   unassigned
>          11     Signal Fail (SF)            this document
>          12     unassigned
>          13     Forced Switch (FS)          this document
>          14     unassigned
>          15     Lockout of Protection (LP)  this document
>        16-254   unassigned
>          255    Reserved
>
> My first question is, why the highest priority RPS value is 15, given
> that the field is 8 bits wide.

[Huub] the four LSB of the request field are sufficient for the
required values. (in PSC and other technologies also four bits
are used for the request coding).

> If anyone ever needs to add a code point
> higher than the highest priority code point, will that work well?

[Huub] that will never be necessary. LP means protection is disabled.

>   I can
> imagine code that says "if operation_priority is greater than
> highest_priority, it's an error", for example.

[Huub] indeed, this will be reported as FOP (failure of protocol).

Best regards, Huub.


-- 
================================================================
Always remember that you are unique...just like everyone else...


From nobody Sat Jun  3 00:38:12 2017
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Subject: [mpls] I-D Action: draft-ietf-mpls-tp-aps-updates-04.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching of the IETF.

        Title           : Updates to MPLS Transport Profile (MPLS-TP) Linear Protection in Automatic Protection Switching (APS) Mode
        Authors         : Jeong-dong Ryoo
                          Taesik Cheung
                          Huub van Helvoort
                          Italo Busi
                          Guangjuan Wen
	Filename        : draft-ietf-mpls-tp-aps-updates-04.txt
	Pages           : 9
	Date            : 2017-06-03

Abstract:
   This document contains updates to MPLS Transport Profile (MPLS-TP)
   linear protection in Automatic Protection Switching (APS) mode
   defined in RFC 7271.  The updates provide rules related to the
   initialization of the Protection State Coordination (PSC) Control
   Logic, in which the state machine resides, when operating in APS
   mode, and clarify some operation related to state transition table
   lookup.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-mpls-tp-aps-updates/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-mpls-tp-aps-updates-04
https://datatracker.ietf.org/doc/html/draft-ietf-mpls-tp-aps-updates-04

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-tp-aps-updates-04


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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From: Shyam Sethuram <shyam.ioml@gmail.com>
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Subject: Re: [mpls] Working Group adoption call for draft-decraene-idr-next-hop-capability-03
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Hi Bruno,
Thanks for the response. Please see inline...


On Fri, Jun 2, 2017 at 3:12 AM, <bruno.decraene@orange.com> wrote:

> Dear Shyam,
>
>
>
> Thanks for the review and feedback
>
> Please see inline [Bruno]
>
>
>
> *From:* Shyam Sethuram [mailto:shyam.ioml@gmail.com]
> *Sent:* Friday, June 02, 2017 12:43 AM
> *To:* John G. Scudder
> *Cc:* idr@ietf. org; mpls@ietf.org; draft-decraene-idr-next-hop-
> capability@bgp.nu
> *Subject:* Re: [mpls] Working Group adoption call for
> draft-decraene-idr-next-hop-capability-03
>
>
>
> Dear authors,
>
>
> Some of the language sounds similar to that in
> draft-ietf-idr-tunnel-encaps.
> Did you consider augmenting tunnel-encaps in order to signal EL by
> adding a new sub-TLV ? It is a transitive attribute but it has a
> Remote Endpoint sub-TLV to bind the capability to the specific nexthop.
> (It may require a new "tunnel type" to represent plain MPLS nexthops.)
>
> [Bruno] To be honest, we have not considered using
> draft-ietf-idr-tunnel-encaps. That being said, if it=E2=80=99s a transiti=
ve
> attribute, it seems like a no go as this is the reason why the original E=
LC
> BGP attribute had been deprecated: cf this short section
> https://tools.ietf.org/html/rfc7447#section-1
>
>
>

Yes any transitive attribute would have this issue. The tunnel-encaps
solves this by encoding the nexthop address also in the Remote Endpoint
sub-TLV. The receiver can then compare that with the MP_REACH nexthop
and perform required validations.

At a high level, I wanted to see if there was a way to avoid
having two separate attributes that both essentially deal with nexthops.
It is quite possible that a speaker receives both nexthop-cap and
tunnel-encaps
attributes for that same nexthop and has to synthesize the two data before
installing into forwarding. On the other hand, tunnel-encaps has turned
into a
"monster attribute" with the whole kitchen sink in it; I can see a fertile
breeding ground for implementation bugs :-)
So I guess we'll see if anyone else has any opinion on this.

Coming back to your attribute, as I said earlier w.r.t. coloring, I know
atleast one usecase that wants to apply EL only to particular
types of overlay traffic (for example, L2 vs L3 VPN) recursing to
a given nexthop with EL capability. There are many ways to
address that - a config knob, signal within the NH attribute, use the
color extcomm and so on. If you have any thoughts on the same,
please add it to the draft.



> This would avoid the need to upgrade all the BGP speakers between egress
> and ingress. tunnel-encaps also has a Color sub-TLV that can be useful,
> for example, when using recursive resoltion, to select a subset of overla=
y
> prefixes that would actually use EL for forwarding.
>
>
>
> That said, some nitpicks:
> - dependant=3D=3D>dependent;
>
> [Bruno] Thanks
>
> infact it can be totally avoided and just call it "Nexthop capabilites"
>
> [Bruno] Yes and that was the initial text. However, this had generated
> some misunderstanding. In particular because the attribute is not
> advertising the capability of the Next-Hop, but capability of this Next-H=
op
> _for the routes advertised with this capability. In particular, one
> Next-Hop may advertise different capabilities for different routes. This =
is
> in needed for the Entropy Label Capability, as this ELC is FEC specific.
>
> That being said, I=E2=80=99m not that happy with the wording =E2=80=9CNex=
t-Hop dependent
> capability=E2=80=9D, hence any other suggestion is welcomed.
>
>
> - that said, it would be better to avoid reusing the term "Capabilities"
> for this
> attribute though I understand you are trying to draw a parallel with
> session capabilities
>
> [Bruno] Indeed, I was trying to draw a parallel with session capability.
> Could you elaborate on why the term =E2=80=9CCapabilities=E2=80=9D is not=
 optimal? Would
> you have alternate suggestion?
>

I don't have a strong opinion on this, it just seemed odd to reuse
terminology from the base spec for a different purpose. I guess we can call
it
nexthop-properties or nexthop-forwarding-info or some such thing. No big
deal,
it's just a nit.

thanks--shyam



>
> Thanks,
>
> Regards,
>
> --Bruno
>
>
>
> thanks--shyam
>
>
>
> On Thu, May 18, 2017 at 9:32 AM, John G. Scudder <jgs@juniper.net> wrote:
>
> Hi All,
>
> IDR working group adoption has been requested for
> draft-decraene-idr-next-hop-capability-03. Please send your comments to
> the IDR mailing list before June 2, 2017. Please remember that we need
> affirmative support in order to adopt the draft, so don't be shy.
>
> draft datatracker page: https://datatracker.ietf.org/
> doc/draft-decraene-idr-next-hop-capability/
> slides from IETF-98: https://www.ietf.org/proceedings/98/slides/slides-
> 98-idr-08-bgp-next-hop-dependent-capabilities-00.pdf
>
> Since in part this draft specifies a replacement for the Entropy Label
> Capability Attribute (ELCA) that was defined by the MPLS WG in RFC 6790 a=
nd
> deprecated by RFC 7447, I have cc'd the MPLS WG mailing list. Since the
> proposed new attribute is a generic container with the ELCA replacement
> just the first application, the current draft is targeted to IDR and not
> MPLS (this was discussed during IETF-93).
>
> Thanks,
>
> --John
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>
>
>
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<div dir=3D"ltr"><p>Hi Bruno,</p><div>Thanks for the response. Please see i=
nline...</div><div><br></div><div><br></div><div class=3D"gmail_quote">On F=
ri, Jun 2, 2017 at 3:12 AM,  <span dir=3D"ltr">&lt;<a href=3D"mailto:bruno.=
decraene@orange.com" target=3D"_blank">bruno.decraene@orange.com</a>&gt;</s=
pan> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0p=
x 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-wid=
th:1px;border-left-style:solid">





<div lang=3D"FR">
<div class=3D"gmail-m_-3913029402811836786WordSection1">
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);f=
ont-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">Dear =
Shyam,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);f=
ont-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt"><u></=
u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);f=
ont-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">Thank=
s for the review and feedback<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);f=
ont-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">Pleas=
e see inline [Bruno]<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);f=
ont-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt"><u></=
u>=C2=A0<u></u></span></p>
<div style=3D"border-width:medium medium medium 1.5pt;border-style:none non=
e none solid;border-color:currentColor currentColor currentColor blue;paddi=
ng:0cm 0cm 0cm 4pt">
<div>
<div style=3D"border-width:1pt medium medium;border-style:solid none none;b=
order-color:rgb(181,196,223) currentColor currentColor;padding:3pt 0cm 0cm"=
>
<p class=3D"MsoNormal"><b><span style=3D"font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;;font-size:10pt">From:</span></b><span style=3D"font-fam=
ily:&quot;Tahoma&quot;,&quot;sans-serif&quot;;font-size:10pt"> Shyam Sethur=
am [mailto:<a href=3D"mailto:shyam.ioml@gmail.com" target=3D"_blank">shyam.=
ioml@gmail.com</a>]
<br>
<b>Sent:</b> Friday, June 02, 2017 12:43 AM<br>
<b>To:</b> John G. Scudder<br>
<b>Cc:</b> idr@ietf. org; <a href=3D"mailto:mpls@ietf.org" target=3D"_blank=
">mpls@ietf.org</a>; <a href=3D"mailto:draft-decraene-idr-next-hop-capabili=
ty@bgp.nu" target=3D"_blank">draft-decraene-idr-next-hop-<wbr>capability@bg=
p.nu</a><span><br>
<b>Subject:</b> Re: [mpls] Working Group adoption call for draft-decraene-i=
dr-next-hop-<wbr>capability-03<u></u><u></u></span></span></p>
</div>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<div>
<p class=3D"MsoNormal">Dear authors,<u></u><u></u></p>
</div><span>
<div>
<p class=3D"MsoNormal"><br>
Some of the language sounds similar to that in draft-ietf-idr-tunnel-encaps=
.<br>
Did you consider augmenting tunnel-encaps in order to signal EL by<br>
adding a new sub-TLV ? It is a transitive attribute but it has a<br>
Remote Endpoint sub-TLV to bind the capability to the specific nexthop.<br>
(It may require a new &quot;tunnel type&quot; to represent plain MPLS nexth=
ops.)<u></u><u></u></p>
</div>
</span><div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);f=
ont-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">[Brun=
o] To be honest, we have not considered using draft-ietf-idr-tunnel-encaps.=
 That being said, if it=E2=80=99s a transitive attribute, it seems like
 a no go as this is the reason why the original ELC BGP attribute had been =
deprecated: cf this short section
<a href=3D"https://tools.ietf.org/html/rfc7447#section-1" target=3D"_blank"=
>https://tools.ietf.org/html/<wbr>rfc7447#section-1</a>
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125)">=
<u></u>=C2=A0</span></p></div></div></div></div></div></blockquote><div><br=
></div><div>Yes any transitive attribute would have this issue. The tunnel-=
encaps<br>solves this by encoding the nexthop address also in the Remote En=
dpoint<br>sub-TLV. The receiver can then compare that with the MP_REACH nex=
thop<br>and perform required validations.</div><div><br></div><div>At a hig=
h level, I wanted to see if there was a way to avoid<br>having two separate=
 attributes that both essentially deal with nexthops.</div><div>It is quite=
 possible that a speaker receives both nexthop-cap and tunnel-encaps</div><=
div>attributes for that same=C2=A0nexthop and has to synthesize the two dat=
a before</div><div>installing into forwarding. On the other hand, tunnel-en=
caps has turned into a<br>&quot;monster attribute&quot; with the whole kitc=
hen sink in it; I can see a fertile<br>breeding ground for implementation b=
ugs :-)<br></div><div>So I guess we&#39;ll see if anyone else has any opini=
on on this.</div><div><br></div><div>Coming back to your attribute, as I sa=
id earlier w.r.t. coloring, I know<br>atleast one usecase that wants to app=
ly EL only to particular<br>types of overlay traffic (for example, L2 vs L3=
 VPN) recursing to<br>a given nexthop with EL capability. There are many wa=
ys to<br>address that - a config knob, signal within the NH attribute, use =
the<br>color extcomm and so on. If you have any thoughts on the same,<br>pl=
ease add it to the draft.</div><div><br></div><div>=C2=A0</div><blockquote =
class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;padding-left:1ex;bo=
rder-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:so=
lid"><div lang=3D"FR"><div class=3D"gmail-m_-3913029402811836786WordSection=
1"><div style=3D"border-width:medium medium medium 1.5pt;border-style:none =
none none solid;border-color:currentColor currentColor currentColor blue;pa=
dding:0cm 0cm 0cm 4pt"><div><div><p class=3D"MsoNormal"><span lang=3D"EN-US=
" style=3D"color:rgb(31,73,125)"><u></u></span></p>
</div><span>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US">This would avoid the need to up=
grade all the BGP speakers between egress<br>
and ingress. tunnel-encaps also has a Color sub-TLV that can be useful,<br>
for example, when using recursive resoltion, to select a subset of overlay<=
br>
prefixes that would actually use EL for forwarding.<u></u><u></u></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
</div>
</span><div><span>
<p class=3D"MsoNormal">That said, some nitpicks:<br>
- dependant=3D=3D&gt;dependent;<span style=3D"color:rgb(31,73,125)"><u></u>=
<u></u></span></p>
</span><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73=
,125);font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt=
">[Bruno] Thanks<u></u><u></u></span></p><span>
<p class=3D"MsoNormal"><span lang=3D"EN-US">infact it can be totally avoide=
d and just<span style=3D"color:rgb(31,73,125)">
</span>call it &quot;Nexthop capabilites&quot;<span style=3D"color:rgb(31,7=
3,125)"><u></u><u></u></span></span></p>
</span><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73=
,125);font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt=
">[Bruno] Yes and that was the initial text. However, this had generated so=
me misunderstanding. In particular because the attribute is not advertising
 the capability of the Next-Hop, but capability of this Next-Hop _for the r=
outes advertised with this capability. In particular, one Next-Hop may adve=
rtise different capabilities for different routes. This is in needed for th=
e Entropy Label Capability, as this
 ELC is FEC specific.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);f=
ont-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">That =
being said, I=E2=80=99m not that happy with the wording =E2=80=9CNext-Hop d=
ependent capability=E2=80=9D, hence any other suggestion is welcomed.<u></u=
><u></u></span></p><span>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><br>
- that said, it would be better to avoid reusing the term &quot;Capabilitie=
s&quot; for this<br>
attribute though I understand you are trying to draw a parallel with<br>
session capabilities<u></u><u></u></span></p>
</span><p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73=
,125);font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt=
">[Bruno] Indeed, I was trying to draw a parallel with session capability. =
Could you elaborate on why the term =E2=80=9CCapabilities=E2=80=9D is not o=
ptimal? Would
 you have alternate suggestion?</span></p></div></div></div></div></div></b=
lockquote><div><br></div><div>I don&#39;t have a strong opinion on this, it=
 just seemed odd to reuse</div><div>terminology from the base spec for a di=
fferent purpose. I guess we can call it</div><div>nexthop-properties or nex=
thop-forwarding-info or some such thing. No big deal,</div><div>it&#39;s ju=
st a nit.</div><div><br></div><div>thanks--shyam</div><div><br></div><div><=
br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8e=
x;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px=
;border-left-style:solid"><div lang=3D"FR"><div class=3D"gmail-m_-391302940=
2811836786WordSection1"><div style=3D"border-width:medium medium medium 1.5=
pt;border-style:none none none solid;border-color:currentColor currentColor=
 currentColor blue;padding:0cm 0cm 0cm 4pt"><div><div><p class=3D"MsoNormal=
"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);font-family:&quot;Cali=
bri&quot;,&quot;sans-serif&quot;;font-size:11pt"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);f=
ont-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt"><u></=
u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);f=
ont-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">Thank=
s,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);f=
ont-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">Regar=
ds,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"color:rgb(31,73,125);f=
ont-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">--Bru=
no<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><u></u>=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal">thanks--shyam<u></u><u></u></p>
</div>
</div><span>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">On Thu, May 18, 2017 at 9:32 AM, John G. Scudder &lt=
;<a href=3D"mailto:jgs@juniper.net" target=3D"_blank">jgs@juniper.net</a>&g=
t; wrote:<u></u><u></u></p>
<p class=3D"MsoNormal">Hi All,<br>
<br>
IDR working group adoption has been requested for draft-decraene-idr-next-h=
op-<wbr>capability-03. Please send your comments to the IDR mailing list be=
fore June 2, 2017. Please remember that we need affirmative support in orde=
r to adopt the draft, so don&#39;t be shy.<br>
<br>
draft datatracker page: <a href=3D"https://datatracker.ietf.org/doc/draft-d=
ecraene-idr-next-hop-capability/" target=3D"_blank">
https://datatracker.ietf.org/<wbr>doc/draft-decraene-idr-next-<wbr>hop-capa=
bility/</a><br>
slides from IETF-98: <a href=3D"https://www.ietf.org/proceedings/98/slides/=
slides-98-idr-08-bgp-next-hop-dependent-capabilities-00.pdf" target=3D"_bla=
nk">
https://www.ietf.org/<wbr>proceedings/98/slides/slides-<wbr>98-idr-08-bgp-n=
ext-hop-<wbr>dependent-capabilities-00.pdf</a><br>
<br>
Since in part this draft specifies a replacement for the Entropy Label Capa=
bility Attribute (ELCA) that was defined by the MPLS WG in RFC 6790 and dep=
recated by RFC 7447, I have cc&#39;d the MPLS WG mailing list. Since the pr=
oposed new attribute is a generic container
 with the ELCA replacement just the first application, the current draft is=
 targeted to IDR and not MPLS (this was discussed during IETF-93).<br>
<br>
Thanks,<br>
<br>
--John<br>
______________________________<wbr>_________________<br>
mpls mailing list<br>
<a href=3D"mailto:mpls@ietf.org" target=3D"_blank">mpls@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/mpls" target=3D"_blank">ht=
tps://www.ietf.org/mailman/<wbr>listinfo/mpls</a><u></u><u></u></p>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</span></div>
</div>
<pre>______________________________<wbr>______________________________<wbr>=
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</blockquote></div><div class=3D"gmail_extra"><br></div></div>

--001a11457cc21ddc0505512c759f--


From nobody Mon Jun  5 00:39:20 2017
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To: "mpls@ietf.org" <mpls@ietf.org>
Cc: "draft-ietf-mpls-spring-lsp-ping@ietf.org" <draft-ietf-mpls-spring-lsp-ping@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "spring@ietf.org" <spring@ietf.org>
From: Loa Andersson <loa@pi.nu>
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Date: Mon, 5 Jun 2017 09:39:08 +0200
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Subject: [mpls] IPR poll on draft-ietf-mpls-spring-lsp-ping
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Working Group, authors,

We have started to prepare the the draft-ietf-mpls-spring-lsp-ping for
wglc, prior to the wglc we need to do an IPR poll.

This mail starts this IPR poll.

Are you aware of any IPR that applies to
draft-ietf-mpls-spring-lsp-ping?

If so, has this IPR been disclosed in compliance with IETF IPR rules
(see RFCs 3979, 4879, 3669 and 5378 for more details).

No IPR disclosures have been submitted directly on draft-ietf-mpls-
spring-lsp-ping or the individual document it replaced.

If you are listed as a document author or contributor please respond to
this email regardless of whether or not you are aware of any relevant
IPR. *The response needs to be sent to the MPLS WG mailing list.* The
document will not advance to the next stage until a response has been
received from each author and contributor.

If you are on the MPLS WG email list but are not listed as an author or
contributor, then please explicitly respond only if you are aware of any
IPR that has not yet been disclosed in conformance with IETF rules.

Since this document might be of interest for the SPRING wg, it has been
copied to the SPRING wg mailing list.

/Loa
mpls wg co-chair
-- 


Loa Andersson                        email: loa@mail01.huawei.com
Senior MPLS Expert                          loa@pi.nu
Huawei Technologies (consultant)     phone: +46 739 81 21 64


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From: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
To: Loa Andersson <loa@pi.nu>
CC: "mpls@ietf.org" <mpls@ietf.org>, "draft-ietf-mpls-spring-lsp-ping@ietf.org" <draft-ietf-mpls-spring-lsp-ping@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: IPR poll on draft-ietf-mpls-spring-lsp-ping
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Subject: Re: [mpls] IPR poll on draft-ietf-mpls-spring-lsp-ping
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From: "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>
To: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
CC: "draft-ietf-mpls-spring-lsp-ping@ietf.org" <draft-ietf-mpls-spring-lsp-ping@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: IPR poll on draft-ietf-mpls-spring-lsp-ping
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From: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>
Date: Mon, 5 Jun 2017 16:44:19 -0500
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Subject: Re: [mpls] Spencer Dawkins' Discuss on draft-ietf-mpls-tp-shared-ring-protection-05: (with DISCUSS and COMMENT)
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Hi, Huub,

On Fri, Jun 2, 2017 at 5:29 PM, Huub van Helvoort <huubatwork@gmail.com>
wrote:

> Hello Spencer,
>
> I am back from our holiday.
> As promised I will now answer the remaining comments
> in-line [Huub]
>

Thanks - and all your proposed responses in this e-mail seem good to me.

Spencer


>
> ----------------------------------------------------------------------
>> DISCUSS:
>> ----------------------------------------------------------------------
>>
> ---8<--- snipped (see my previous response)
>
>> ----------------------------------------------------------------------
>> COMMENT:
>> ----------------------------------------------------------------------
>>
>> ---------- all the other questions
>>
>> In this text,
>>
>>     When the service LSP passes through the interconnected rings, the
>>     direction of the working ring tunnels used on both rings SHOULD be
>>     the same.  For example, if the service LSP uses the clockwise
>> working
>>     ring tunnel on Ring1, when the service LSP leaves Ring1 and enters
>>     Ring2, the working ring tunnel used on Ring2 SHOULD also follow the
>>     clockwise direction.
>>
>> I'm not understanding why this is a SHOULD, and not a MUST. If the
>> direction of the working ring tunnels used on both rings is not the same,
>> does this still work?
>>
>
> [Huub] it will still work.
> The SHOULD is in particular useful in case of  dual-node interconnected
> rings. It ensures that the traffic passes only one of the two
> interconnecting
> nodes, and does not pass the link between the two interconnecting nodes.
> The traffic will then only be switched to the protection path if the
> interconnecting node fails which is in working path.
>
> If it still works, why does this matter? But, either way, you might
>> usefully say something about why this isn't always the right thing to do,
>> even if you just give one example. The point of SHOULD is that
>> implementers make their own informed decisions, so providing information
>> that will inform those decisions seems important.
>>
>
> [Huub] OK, point taken.
>
> I wanted to call out
>>
>>     Ring switches MUST be preempted by higher priority RPS requests.
>> For
>>     example, consider a protection switch that is active due to a manual
>>     switch request on the given link, and another protection switch is
>>     required due to a failure on another link.  Then an RPS request MUST
>>     be generated, the former protection switch MUST be dropped, and the
>>     latter protection switch established.
>>
>>     MSRP mechanism SHOULD support multiple protection switches in the
>>     ring, resulting in the ring being segmented into two or more
>> separate
>>     segments.  This may happen when several RPS requests of the same
>>     priority exist in the ring due to multiple failures or external
>>     switch commands.
>>
>> as really good examples of the kind of text I think would help the places
>> in this document ("For example", "This may happen when") where no
>> examples are given. Thanks for providing those examples!
>>
>
> [Huub] thank you for your advise.
>
> Ouch. Do I understand from
>>
>>     o  Protection Switching Mode (M): This 2-bit field indicates the
>>        protection switching mode used by the sending node of the RPS
>>        message.  This can be used to check that the ring nodes on the
>>        same ring use the same protection switching mechanism.  The
>>        defined values of the M field are listed as below:
>>
>>               +------------------+-----------------------------+
>>               |  Bits (MSB-LSB)  |   Protecton Switching Mode  |
>>               +------------------+-----------------------------+
>>               |       0 0        |         Reserved            |
>>               |       0 1        |         Wrapping            |
>>               |       1 0        |       Short Wrapping        |
>>               |       1 1        |         Steering            |
>>               +------------------+-----------------------------+
>>
>> that you already have three protection mechanisms, and have only one
>> possible codepoint to allocate for any future optimizations? Assuming
>> that "0 0" can be unReserved ...
>>
>
> [Huub] I hope the explanations I provided for the application of
> wrapping/short-wrapping/steering show that these are the only
> three possible mechanisms.
>
> Could you clarify what "anyway" means in this text?
>>
>>     When multiple MS RPS requests exist at the same time addressing
>>     different links and there is no higher priority request on the ring,
>>     no switch SHOULD be executed and existing switches MUST be dropped.
>>     The nodes MUST signal, anyway, the MS RPS request code.
>>
>
> [Huub] good point. To avoid confusion it would be better to
> replace the last sentence by:
> "The node still SHOULD signal the relevant RPS request".
>
> I'm seeing that the commands like LP described in section 5.2.1.1  are
>> used in the document before these (I'm serious) helpful and clear
>> explanations appear. If it's possible to move section 5.2.1.1 up in the
>> document, that would be great, but if it isn't possible, a forward
>> pointer would be helpful to readers who don't already know what the
>> command abbreviations mean.
>>
>
> [Huub] good point, we will take this into account when we make
> the revision of the draft.
>
> I'm really confused by this SHOULD:
>>
>>     The PSC protocol [RFC6378] is designed for point-to-point LSPs, on
>>     which the protection switching can only be performed on one or both
>>     of the end points of the LSP.  The RPS protocol is designed for ring
>>     tunnels, which consist of multiple ring nodes, and the failure could
>>     happen on any segment of the ring, thus RPS SHOULD be capable of
>>     identifying and handling the different failures on the ring, and
>>     coordinating the protection switching behavior of all the nodes on
>>     the ring.
>>
>> I suspect that's because it's not a 2119 SHOULD, but if people think it
>> is, I wouldn't mind understanding why.
>>
>
> [Huub] you are right that is not a 2119 SHOULD,
> It would be better to replace "SHOULD be" by "is".
> (the protocol has been implemented and the capability has been tested
> successfully)
>
> Section 5.3, "RPS and PSC Comparison on Ring Topology" is really helpful,
>> but it appears 43 pages in. Given that I'd expect people to be asking why
>> they should implement a new protection switching protocol when they've
>> already implemented PSC, I'd think this would be much more useful, early
>> in the document.
>>
>
> [Huub] we can move the text up in the draft.
>
> I'm somewhat confused about the code point allocation strategy in this
>> text:
>>
>>     The RPS Request Field is 8 bits, the allocated values are as
>> follows:
>>
>>         Value       Description               Reference
>>        -------  --------------------------- ---------------
>>           0     No Request (NR)             this document
>>           1     Reverse Request (RR)        this document
>>           2     unassigned
>>           3     Exercise (EXER)             this document
>>           4     unassigned
>>           5     Wait-To-Restore (WTR)       this document
>>           6     Manual Switch (MS)          this document
>>          7-10   unassigned
>>          11     Signal Fail (SF)            this document
>>          12     unassigned
>>          13     Forced Switch (FS)          this document
>>          14     unassigned
>>          15     Lockout of Protection (LP)  this document
>>        16-254   unassigned
>>          255    Reserved
>>
>> My first question is, why the highest priority RPS value is 15, given
>> that the field is 8 bits wide.
>>
>
> [Huub] the four LSB of the request field are sufficient for the
> required values. (in PSC and other technologies also four bits
> are used for the request coding).
>
> If anyone ever needs to add a code point
>> higher than the highest priority code point, will that work well?
>>
>
> [Huub] that will never be necessary. LP means protection is disabled.
>
>   I can
>> imagine code that says "if operation_priority is greater than
>> highest_priority, it's an error", for example.
>>
>
> [Huub] indeed, this will be reported as FOP (failure of protocol).
>
> Best regards, Huub.
>
>
>
> --
> ================================================================
> Always remember that you are unique...just like everyone else...
>
>

--f403045da456c8d53d05513d67d7
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi, Huub,<div class=3D"gmail_extra"><br><div class=3D"gmai=
l_quote">On Fri, Jun 2, 2017 at 5:29 PM, Huub van Helvoort <span dir=3D"ltr=
">&lt;<a href=3D"mailto:huubatwork@gmail.com" target=3D"_blank">huubatwork@=
gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello Sp=
encer,<br>
<br>
I am back from our holiday.<br>
As promised I will now answer the remaining comments<br>
in-line [Huub]<br></blockquote><div><br></div><div>Thanks - and all your pr=
oposed responses in this e-mail seem good to me.</div><div><br></div><div>S=
pencer</div><div>=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"mar=
gin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
------------------------------<wbr>------------------------------<wbr>-----=
-----<br>
DISCUSS:<br>
------------------------------<wbr>------------------------------<wbr>-----=
-----<br>
</blockquote>
---8&lt;--- snipped (see my previous response)<span class=3D""><br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
------------------------------<wbr>------------------------------<wbr>-----=
-----<br>
COMMENT:<br>
------------------------------<wbr>------------------------------<wbr>-----=
-----<br>
<br>
---------- all the other questions<br>
<br>
In this text,<br>
<br>
=C2=A0 =C2=A0 When the service LSP passes through the interconnected rings,=
 the<br>
=C2=A0 =C2=A0 direction of the working ring tunnels used on both rings SHOU=
LD be<br>
=C2=A0 =C2=A0 the same.=C2=A0 For example, if the service LSP uses the cloc=
kwise<br>
working<br>
=C2=A0 =C2=A0 ring tunnel on Ring1, when the service LSP leaves Ring1 and e=
nters<br>
=C2=A0 =C2=A0 Ring2, the working ring tunnel used on Ring2 SHOULD also foll=
ow the<br>
=C2=A0 =C2=A0 clockwise direction.<br>
<br>
I&#39;m not understanding why this is a SHOULD, and not a MUST. If the<br>
direction of the working ring tunnels used on both rings is not the same,<b=
r>
does this still work?<br>
</blockquote>
<br></span>
[Huub] it will still work.<br>
The SHOULD is in particular useful in case of=C2=A0 dual-node interconnecte=
d<br>
rings. It ensures that the traffic passes only one of the two interconnecti=
ng<br>
nodes, and does not pass the link between the two interconnecting nodes.<br=
>
The traffic will then only be switched to the protection path if the<br>
interconnecting node fails which is in working path.<span class=3D""><br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
If it still works, why does this matter? But, either way, you might<br>
usefully say something about why this isn&#39;t always the right thing to d=
o,<br>
even if you just give one example. The point of SHOULD is that<br>
implementers make their own informed decisions, so providing information<br=
>
that will inform those decisions seems important.<br>
</blockquote>
<br></span>
[Huub] OK, point taken.<span class=3D""><br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
I wanted to call out<br>
<br>
=C2=A0 =C2=A0 Ring switches MUST be preempted by higher priority RPS reques=
ts.<br>
For<br>
=C2=A0 =C2=A0 example, consider a protection switch that is active due to a=
 manual<br>
=C2=A0 =C2=A0 switch request on the given link, and another protection swit=
ch is<br>
=C2=A0 =C2=A0 required due to a failure on another link.=C2=A0 Then an RPS =
request MUST<br>
=C2=A0 =C2=A0 be generated, the former protection switch MUST be dropped, a=
nd the<br>
=C2=A0 =C2=A0 latter protection switch established.<br>
<br>
=C2=A0 =C2=A0 MSRP mechanism SHOULD support multiple protection switches in=
 the<br>
=C2=A0 =C2=A0 ring, resulting in the ring being segmented into two or more<=
br>
separate<br>
=C2=A0 =C2=A0 segments.=C2=A0 This may happen when several RPS requests of =
the same<br>
=C2=A0 =C2=A0 priority exist in the ring due to multiple failures or extern=
al<br>
=C2=A0 =C2=A0 switch commands.<br>
<br>
as really good examples of the kind of text I think would help the places<b=
r>
in this document (&quot;For example&quot;, &quot;This may happen when&quot;=
) where no<br>
examples are given. Thanks for providing those examples!<br>
</blockquote>
<br></span>
[Huub] thank you for your advise.<span class=3D""><br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Ouch. Do I understand from<br>
<br>
=C2=A0 =C2=A0 o=C2=A0 Protection Switching Mode (M): This 2-bit field indic=
ates the<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0protection switching mode used by the sending no=
de of the RPS<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0message.=C2=A0 This can be used to check that th=
e ring nodes on the<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0same ring use the same protection switching mech=
anism.=C2=A0 The<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0defined values of the M field are listed as belo=
w:<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +------------------+------=
----<wbr>-------------------+<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 Bits (MSB-LSB)=C2=
=A0 |=C2=A0 =C2=A0Protecton Switching Mode=C2=A0 |<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +------------------+------=
----<wbr>-------------------+<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=
=A00 0=C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Reserv=
ed=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=
=A00 1=C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Wrappi=
ng=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=
=A01 0=C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=A0Short Wrappin=
g=C2=A0 =C2=A0 =C2=A0 =C2=A0 |<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=
=A01 1=C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Steeri=
ng=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 +------------------+------=
----<wbr>-------------------+<br>
<br>
that you already have three protection mechanisms, and have only one<br>
possible codepoint to allocate for any future optimizations? Assuming<br>
that &quot;0 0&quot; can be unReserved ...<br>
</blockquote>
<br></span>
[Huub] I hope the explanations I provided for the application of<br>
wrapping/short-wrapping/steeri<wbr>ng show that these are the only<br>
three possible mechanisms.<span class=3D""><br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Could you clarify what &quot;anyway&quot; means in this text?<br>
<br>
=C2=A0 =C2=A0 When multiple MS RPS requests exist at the same time addressi=
ng<br>
=C2=A0 =C2=A0 different links and there is no higher priority request on th=
e ring,<br>
=C2=A0 =C2=A0 no switch SHOULD be executed and existing switches MUST be dr=
opped.<br>
=C2=A0 =C2=A0 The nodes MUST signal, anyway, the MS RPS request code.<br>
</blockquote>
<br></span>
[Huub] good point. To avoid confusion it would be better to<br>
replace the last sentence by:<br>
&quot;The node still SHOULD signal the relevant RPS request&quot;.<span cla=
ss=3D""><br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
I&#39;m seeing that the commands like LP described in section 5.2.1.1=C2=A0=
 are<br>
used in the document before these (I&#39;m serious) helpful and clear<br>
explanations appear. If it&#39;s possible to move section 5.2.1.1 up in the=
<br>
document, that would be great, but if it isn&#39;t possible, a forward<br>
pointer would be helpful to readers who don&#39;t already know what the<br>
command abbreviations mean.<br>
</blockquote>
<br></span>
[Huub] good point, we will take this into account when we make<br>
the revision of the draft.<span class=3D""><br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
I&#39;m really confused by this SHOULD:<br>
<br>
=C2=A0 =C2=A0 The PSC protocol [RFC6378] is designed for point-to-point LSP=
s, on<br>
=C2=A0 =C2=A0 which the protection switching can only be performed on one o=
r both<br>
=C2=A0 =C2=A0 of the end points of the LSP.=C2=A0 The RPS protocol is desig=
ned for ring<br>
=C2=A0 =C2=A0 tunnels, which consist of multiple ring nodes, and the failur=
e could<br>
=C2=A0 =C2=A0 happen on any segment of the ring, thus RPS SHOULD be capable=
 of<br>
=C2=A0 =C2=A0 identifying and handling the different failures on the ring, =
and<br>
=C2=A0 =C2=A0 coordinating the protection switching behavior of all the nod=
es on<br>
=C2=A0 =C2=A0 the ring.<br>
<br>
I suspect that&#39;s because it&#39;s not a 2119 SHOULD, but if people thin=
k it<br>
is, I wouldn&#39;t mind understanding why.<br>
</blockquote>
<br></span>
[Huub] you are right that is not a 2119 SHOULD,<br>
It would be better to replace &quot;SHOULD be&quot; by &quot;is&quot;.<br>
(the protocol has been implemented and the capability has been tested<br>
successfully)<span class=3D""><br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
Section 5.3, &quot;RPS and PSC Comparison on Ring Topology&quot; is really =
helpful,<br>
but it appears 43 pages in. Given that I&#39;d expect people to be asking w=
hy<br>
they should implement a new protection switching protocol when they&#39;ve<=
br>
already implemented PSC, I&#39;d think this would be much more useful, earl=
y<br>
in the document.<br>
</blockquote>
<br></span>
[Huub] we can move the text up in the draft.<span class=3D""><br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
I&#39;m somewhat confused about the code point allocation strategy in this<=
br>
text:<br>
<br>
=C2=A0 =C2=A0 The RPS Request Field is 8 bits, the allocated values are as<=
br>
follows:<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Value=C2=A0 =C2=A0 =C2=A0 =C2=A0Description=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Reference<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0-------=C2=A0 --------------------------- ------=
---------<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 0=C2=A0 =C2=A0 =C2=A0No Request (NR)=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 1=C2=A0 =C2=A0 =C2=A0Reverse Request (RR=
)=C2=A0 =C2=A0 =C2=A0 =C2=A0 this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 2=C2=A0 =C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 3=C2=A0 =C2=A0 =C2=A0Exercise (EXER)=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 4=C2=A0 =C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 5=C2=A0 =C2=A0 =C2=A0Wait-To-Restore (WT=
R)=C2=A0 =C2=A0 =C2=A0 =C2=A0this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 6=C2=A0 =C2=A0 =C2=A0Manual Switch (MS)=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A07-10=C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A011=C2=A0 =C2=A0 =C2=A0Signal Fail (SF)=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A012=C2=A0 =C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A013=C2=A0 =C2=A0 =C2=A0Forced Switch (FS)=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A014=C2=A0 =C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A015=C2=A0 =C2=A0 =C2=A0Lockout of Protecti=
on (LP)=C2=A0 this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A016-254=C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0255=C2=A0 =C2=A0 Reserved<br>
<br>
My first question is, why the highest priority RPS value is 15, given<br>
that the field is 8 bits wide.<br>
</blockquote>
<br></span>
[Huub] the four LSB of the request field are sufficient for the<br>
required values. (in PSC and other technologies also four bits<br>
are used for the request coding).<span class=3D""><br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
If anyone ever needs to add a code point<br>
higher than the highest priority code point, will that work well?<br>
</blockquote>
<br></span>
[Huub] that will never be necessary. LP means protection is disabled.<span =
class=3D""><br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
=C2=A0 I can<br>
imagine code that says &quot;if operation_priority is greater than<br>
highest_priority, it&#39;s an error&quot;, for example.<br>
</blockquote>
<br></span>
[Huub] indeed, this will be reported as FOP (failure of protocol).<br>
<br>
Best regards, Huub.<div class=3D"HOEnZb"><div class=3D"h5"><br>
<br>
<br>
-- <br>
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D<wbr>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<wbr>=3D=3D=3D=3D<br>
Always remember that you are unique...just like everyone else...<br>
<br>
</div></div></blockquote></div><br></div></div>

--f403045da456c8d53d05513d67d7--


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From: Greg Mirsky <gregimirsky@gmail.com>
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Subject: [mpls] MPLS label and LSE data models
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Dear Authors, et.al,
I've got a question, or several of them, about data models of MPLS label
and MPLS label stack element (LSE). I ahve not followed the discussions and
apologize if these already were considered, discussed.
In the Routing Types document I've found that only MPLS label being modeled
but not the MPLS LSE. As result, models that use rt-types:mpls-label, e.g.
YANG DAta Model for MPLS Static LSPs, defines outgoing labels not as array
of LSEs but as array (leaf-list) of MPLS labels. In the latter document I
don't see how TTL and Traffic Class (TC) are presented for each of labels
in the array. Hence my questions:

   - should there be data model of MPLS LSE in rt-types (it does have TTL
   and TC but separately);
   - should data model of Static MPLS LSP use MPLS LSE model rather than
   model of only 20 bit-long label.

Appreciate you comments.

Regards,
Greg

--001a11405552571ef305513e049b
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<div dir=3D"ltr">Dear Authors, <a href=3D"http://et.al">et.al</a>,<div>I&#3=
9;ve got a question, or several of them, about data models of MPLS label an=
d MPLS label stack element (LSE). I ahve not followed the discussions and a=
pologize if these already were considered, discussed.</div><div>In the Rout=
ing Types document I&#39;ve found that only MPLS label being modeled but no=
t the MPLS LSE. As result, models that use rt-types:mpls-label, e.g. YANG D=
Ata Model for MPLS Static LSPs, defines outgoing labels not as array of LSE=
s but as array (leaf-list) of MPLS labels. In the latter document I don&#39=
;t see how TTL and Traffic Class (TC) are presented for each of labels in t=
he array. Hence my questions:</div><div><ul><li>should there be data model =
of MPLS LSE in rt-types (it does have TTL and TC but separately);</li><li>s=
hould data model of Static MPLS LSP use MPLS LSE model rather than model of=
 only 20 bit-long label.</li></ul><div>Appreciate you comments.</div></div>=
<div><br></div><div>Regards,</div><div>Greg</div></div>

--001a11405552571ef305513e049b--


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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Greg Mirsky <gregimirsky@gmail.com>, "draft-ietf-rtgwg-routing-types@ietf.org" <draft-ietf-rtgwg-routing-types@ietf.org>, "draft-ietf-mpls-static-yang@ietf.org" <draft-ietf-mpls-static-yang@ietf.org>
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Thread-Topic: MPLS label and LSE data models
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 5 Jun 2017 17:43:39 -0700
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To: "Acee Lindem (acee)" <acee@cisco.com>
Cc: "draft-ietf-rtgwg-routing-types@ietf.org" <draft-ietf-rtgwg-routing-types@ietf.org>,  "draft-ietf-mpls-static-yang@ietf.org" <draft-ietf-mpls-static-yang@ietf.org>,  "rtgwg@ietf.org" <rtgwg@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/ShIC3gYAXgOy-sf8VEmTjBZc7vs>
Subject: Re: [mpls] MPLS label and LSE data models
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--001a113d66b2296c4005513fe9ca
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Hi Acee,
I think rather of the contrary, Static MPLS LSP must include TC and TTL.
And Bottom-of-the-stack flag as well (I don't see it in grouping
mpls-label-stack
of the ietf-routing-types).

Regards,
Greg

On Mon, Jun 5, 2017 at 4:55 PM, Acee Lindem (acee) <acee@cisco.com> wrote:

> Greg, et al,
>
> From: Greg Mirsky <gregimirsky@gmail.com>
> Date: Monday, June 5, 2017 at 6:28 PM
> To: "draft-ietf-rtgwg-routing-types@ietf.org" <draft-ietf-rtgwg-routing-
> types@ietf.org>, "draft-ietf-mpls-static-yang@ietf.org" <
> draft-ietf-mpls-static-yang@ietf.org>
> Cc: Routing WG <rtgwg@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>
> Subject: MPLS label and LSE data models
> Resent-From: <alias-bounces@ietf.org>
> Resent-To: Yingzhen Qu <yingzhen.qu@huawei.com>, <xufeng_liu@jabil.com>,
> Acee Lindem <acee@cisco.com>, Christian Hopps <chopps@chopps.org>, <
> lberger@labn.net>
> Resent-Date: Monday, June 5, 2017 at 6:28 PM
>
> Dear Authors, et.al,
> I've got a question, or several of them, about data models of MPLS label
> and MPLS label stack element (LSE). I ahve not followed the discussions a=
nd
> apologize if these already were considered, discussed.
> In the Routing Types document I've found that only MPLS label being
> modeled but not the MPLS LSE. As result, models that use
> rt-types:mpls-label, e.g. YANG DAta Model for MPLS Static LSPs, defines
> outgoing labels not as array of LSEs but as array (leaf-list) of MPLS
> labels. In the latter document I don't see how TTL and Traffic Class (TC)
> are presented for each of labels in the array. Hence my questions:
>
>    - should there be data model of MPLS LSE in rt-types (it does have TTL
>    and TC but separately);
>
>
>    - should data model of Static MPLS LSP use MPLS LSE model rather than
>    model of only 20 bit-long label.
>
> Where else so you see  a requirement for a label stack with entries that
> don=E2=80=99t contain TC and TTL? This seems specific to static provision=
ing of
> static LSPs rather than a general requirement for ietf-routing-types.
>
> Thanks,
> Acee
>
>
> Appreciate you comments.
>
> Regards,
> Greg
>
>

--001a113d66b2296c4005513fe9ca
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<div dir=3D"ltr">Hi Acee,<div>I think rather of the contrary, Static MPLS L=
SP must include TC and TTL. And Bottom-of-the-stack flag as well (I don&#39=
;t see it in grouping=C2=A0<span style=3D"color:rgb(0,0,0);font-size:13.333=
3px">mpls-label-stack of the ietf-routing-types).</span></div><div><span st=
yle=3D"color:rgb(0,0,0);font-size:13.3333px"><br></span></div><div><span st=
yle=3D"color:rgb(0,0,0);font-size:13.3333px">Regards,</span></div><div><spa=
n style=3D"color:rgb(0,0,0);font-size:13.3333px">Greg</span></div></div><di=
v class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Mon, Jun 5, 2017 =
at 4:55 PM, Acee Lindem (acee) <span dir=3D"ltr">&lt;<a href=3D"mailto:acee=
@cisco.com" target=3D"_blank">acee@cisco.com</a>&gt;</span> wrote:<br><bloc=
kquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #cc=
c solid;padding-left:1ex">



<div style=3D"word-wrap:break-word;color:rgb(0,0,0);font-size:14px;font-fam=
ily:Calibri,sans-serif">
<div>Greg, et al,=C2=A0</div>
<div><br>
</div>
<span id=3D"m_-1503950414117794461OLK_SRC_BODY_SECTION">
<div style=3D"font-family:Calibri;font-size:11pt;text-align:left;color:blac=
k;BORDER-BOTTOM:medium none;BORDER-LEFT:medium none;PADDING-BOTTOM:0in;PADD=
ING-LEFT:0in;PADDING-RIGHT:0in;BORDER-TOP:#b5c4df 1pt solid;BORDER-RIGHT:me=
dium none;PADDING-TOP:3pt">
<span style=3D"font-weight:bold">From: </span>Greg Mirsky &lt;<a href=3D"ma=
ilto:gregimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt;=
<br>
<span style=3D"font-weight:bold">Date: </span>Monday, June 5, 2017 at 6:28 =
PM<br>
<span style=3D"font-weight:bold">To: </span>&quot;<a href=3D"mailto:draft-i=
etf-rtgwg-routing-types@ietf.org" target=3D"_blank">draft-ietf-rtgwg-routin=
g-<wbr>types@ietf.org</a>&quot; &lt;<a href=3D"mailto:draft-ietf-rtgwg-rout=
ing-types@ietf.org" target=3D"_blank">draft-ietf-rtgwg-routing-<wbr>types@i=
etf.org</a>&gt;, &quot;<a href=3D"mailto:draft-ietf-mpls-static-yang@ietf.o=
rg" target=3D"_blank">draft-ietf-mpls-static-yang@<wbr>ietf.org</a>&quot;
 &lt;<a href=3D"mailto:draft-ietf-mpls-static-yang@ietf.org" target=3D"_bla=
nk">draft-ietf-mpls-static-yang@<wbr>ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Cc: </span>Routing WG &lt;<a href=3D"mailt=
o:rtgwg@ietf.org" target=3D"_blank">rtgwg@ietf.org</a>&gt;, &quot;<a href=
=3D"mailto:mpls@ietf.org" target=3D"_blank">mpls@ietf.org</a>&quot; &lt;<a =
href=3D"mailto:mpls@ietf.org" target=3D"_blank">mpls@ietf.org</a>&gt;<br>
<span style=3D"font-weight:bold">Subject: </span>MPLS label and LSE data mo=
dels<br>
<span style=3D"font-weight:bold">Resent-From: </span>&lt;<a href=3D"mailto:=
alias-bounces@ietf.org" target=3D"_blank">alias-bounces@ietf.org</a>&gt;<br=
>
<span style=3D"font-weight:bold">Resent-To: </span>Yingzhen Qu &lt;<a href=
=3D"mailto:yingzhen.qu@huawei.com" target=3D"_blank">yingzhen.qu@huawei.com=
</a>&gt;, &lt;<a href=3D"mailto:xufeng_liu@jabil.com" target=3D"_blank">xuf=
eng_liu@jabil.com</a>&gt;, Acee Lindem &lt;<a href=3D"mailto:acee@cisco.com=
" target=3D"_blank">acee@cisco.com</a>&gt;,
 Christian Hopps &lt;<a href=3D"mailto:chopps@chopps.org" target=3D"_blank"=
>chopps@chopps.org</a>&gt;, &lt;<a href=3D"mailto:lberger@labn.net" target=
=3D"_blank">lberger@labn.net</a>&gt;<br>
<span style=3D"font-weight:bold">Resent-Date: </span>Monday, June 5, 2017 a=
t 6:28 PM<br>
</div><span class=3D"">
<div><br>
</div>
<blockquote id=3D"m_-1503950414117794461MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE"=
 style=3D"BORDER-LEFT:#b5c4df 5 solid;PADDING:0 0 0 5;MARGIN:0 0 0 5">
<div>
<div>
<div dir=3D"ltr">Dear Authors, <a href=3D"http://et.al" target=3D"_blank">e=
t.al</a>,
<div>I&#39;ve got a question, or several of them, about data models of MPLS=
 label and MPLS label stack element (LSE). I ahve not followed the discussi=
ons and apologize if these already were considered, discussed.</div>
<div>In the Routing Types document I&#39;ve found that only MPLS label bein=
g modeled but not the MPLS LSE. As result, models that use rt-types:mpls-la=
bel, e.g. YANG DAta Model for MPLS Static LSPs, defines outgoing labels not=
 as array of LSEs but as array (leaf-list)
 of MPLS labels. In the latter document I don&#39;t see how TTL and Traffic=
 Class (TC) are presented for each of labels in the array. Hence my questio=
ns:</div>
<div>
<ul>
<li>should there be data model of MPLS LSE in rt-types (it does have TTL an=
d TC but separately);</li></ul>
</div>
</div>
</div>
</div>
</blockquote>
</span></span><span class=3D""><span id=3D"m_-1503950414117794461OLK_SRC_BO=
DY_SECTION">
<blockquote id=3D"m_-1503950414117794461MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE"=
 style=3D"BORDER-LEFT:#b5c4df 5 solid;PADDING:0 0 0 5;MARGIN:0 0 0 5">
<div>
<div>
<div dir=3D"ltr">
<div>
<ul>
<li>should data model of Static MPLS LSP use MPLS LSE model rather than mod=
el of only 20 bit-long label.</li></ul>
</div>
</div>
</div>
</div>
</blockquote>
</span>
</span><div>Where else so you see =C2=A0a requirement for a label stack wit=
h entries that don=E2=80=99t contain TC and TTL? This seems specific to sta=
tic provisioning of static LSPs rather than a general requirement for ietf-=
routing-types.=C2=A0</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Acee</div><span class=3D"">
<div><br>
</div>
<div><br>
</div>
<span id=3D"m_-1503950414117794461OLK_SRC_BODY_SECTION">
<blockquote id=3D"m_-1503950414117794461MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE"=
 style=3D"BORDER-LEFT:#b5c4df 5 solid;PADDING:0 0 0 5;MARGIN:0 0 0 5">
<div>
<div>
<div dir=3D"ltr">
<div>
<div>Appreciate you comments.</div>
</div>
<div><br>
</div>
<div>Regards,</div>
<div>Greg</div>
</div>
</div>
</div>
</blockquote>
</span>
</span></div>

</blockquote></div><br></div>

--001a113d66b2296c4005513fe9ca--


From nobody Tue Jun  6 02:46:42 2017
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To: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
Cc: "draft-ietf-mpls-spring-lsp-ping@ietf.org" <draft-ietf-mpls-spring-lsp-ping@ietf.org>,  "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "spring@ietf.org" <spring@ietf.org>
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From: Hannes Gredler <hannes@gredler.at>
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Subject: Re: [mpls] IPR poll on draft-ietf-mpls-spring-lsp-ping
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hi loa,

i am not aware of any IPR around draft-ietf-mpls-spring-lsp-ping.

/hannes

On 6/5/17 09:39, Loa Andersson wrote:
> Working Group, authors,
> 
> We have started to prepare the the draft-ietf-mpls-spring-lsp-ping for
> wglc, prior to the wglc we need to do an IPR poll.
> 
> This mail starts this IPR poll.
> 
> Are you aware of any IPR that applies to
> draft-ietf-mpls-spring-lsp-ping?
> 
> If so, has this IPR been disclosed in compliance with IETF IPR rules
> (see RFCs 3979, 4879, 3669 and 5378 for more details).
> 
> No IPR disclosures have been submitted directly on draft-ietf-mpls-
> spring-lsp-ping or the individual document it replaced.
> 
> If you are listed as a document author or contributor please respond to
> this email regardless of whether or not you are aware of any relevant
> IPR. *The response needs to be sent to the MPLS WG mailing list.* The
> document will not advance to the next stage until a response has been
> received from each author and contributor.
> 
> If you are on the MPLS WG email list but are not listed as an author or
> contributor, then please explicitly respond only if you are aware of any
> IPR that has not yet been disclosed in conformance with IETF rules.
> 
> Since this document might be of interest for the SPRING wg, it has been
> copied to the SPRING wg mailing list.
> 
> /Loa
> mpls wg co-chair


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To: Shyam Sethuram <shyam.ioml@gmail.com>
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Thread-Topic: [mpls] Working Group adoption call for draft-decraene-idr-next-hop-capability-03
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From: Xufeng Liu <Xufeng_Liu@jabil.com>
To: Greg Mirsky <gregimirsky@gmail.com>, "Acee Lindem (acee)" <acee@cisco.com>
CC: "draft-ietf-rtgwg-routing-types@ietf.org" <draft-ietf-rtgwg-routing-types@ietf.org>, "draft-ietf-mpls-static-yang@ietf.org" <draft-ietf-mpls-static-yang@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: MPLS label and LSE data models
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/iEycjJIHVoICpJ2F5TZ09LwEAGo>
Subject: Re: [mpls] MPLS label and LSE data models
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From: "Acee Lindem (acee)" <acee@cisco.com>
To: Greg Mirsky <gregimirsky@gmail.com>
CC: "draft-ietf-rtgwg-routing-types@ietf.org" <draft-ietf-rtgwg-routing-types@ietf.org>, "draft-ietf-mpls-static-yang@ietf.org" <draft-ietf-mpls-static-yang@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: MPLS label and LSE data models
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Date: Tue, 6 Jun 2017 15:10:26 +0000
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Subject: Re: [mpls] MPLS label and LSE data models
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Tue, 6 Jun 2017 11:55:59 -0700
Message-ID: <CA+RyBmWHvfXt_Vdhc5w70ugQTSS5qffTWbQ+Lb9D_6PpfP10QQ@mail.gmail.com>
To: Xufeng Liu <Xufeng_Liu@jabil.com>
Cc: "Acee Lindem (acee)" <acee@cisco.com>,  "draft-ietf-rtgwg-routing-types@ietf.org" <draft-ietf-rtgwg-routing-types@ietf.org>,  "draft-ietf-mpls-static-yang@ietf.org" <draft-ietf-mpls-static-yang@ietf.org>,  "rtgwg@ietf.org" <rtgwg@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/xXb29qIwTKFYyX5wO0UIMhoeRQ0>
Subject: Re: [mpls] MPLS label and LSE data models
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Content-Type: text/plain; charset="UTF-8"
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Hi Xufeng,
thank you for helping me with your insight. I have couple follow-up
questions:

   - yes, grouping mpls-label-stack covers LSE though I cannot see why it
   needs id, sequence identifier. I'd expect the label stack already be
   properly ordered;
   - if we agree that the mpls-label-stack is ordered list, then figuring
   out which LSE should have BoS set is indeed benign and may not require t=
o
   be explicit;
   - as for Static MPLS LSP I propose:
      - no need to have outgoing_label and outgoing_labels as the former is
      special case of the latter;
      - consider whether to use rt-type:mpls-label-stack rather than
      rt-type:mpls-label. It gets tricky on transit nodes but we, it
seems to me,
      need operations on TTL and TC being explicit on ingress.

Regards,
Greg

On Tue, Jun 6, 2017 at 8:05 AM, Xufeng Liu <Xufeng_Liu@jabil.com> wrote:

> Hi Greg,
>
>
>
>    1. As you mentioned, grouping mpls-label-stack is defined in
>    routing-types, so MPLS LSE is covered, right?
>    2. Bottom-of-the-stack flag should not be needed in the model,
>    because the label stack is a list with sequence ID=E2=80=99s, which te=
ll us the
>    beginning and the end of the stack.
>    3. The discussion on static MPLS LSP has started, but not converged
>    yet. There are still open issues w.r.t. how to model the label stack a=
nd
>    stack operations. Any suggestions would be appreciated. Do you have a
>    proposal?
>
> Thanks,
>
> - Xufeng
>
>
>
> *From:* Greg Mirsky [mailto:gregimirsky@gmail.com]
> *Sent:* Monday, June 5, 2017 8:44 PM
> *To:* Acee Lindem (acee) <acee@cisco.com>
> *Cc:* draft-ietf-rtgwg-routing-types@ietf.org;
> draft-ietf-mpls-static-yang@ietf.org; rtgwg@ietf.org; mpls@ietf.org
> *Subject:* Re: MPLS label and LSE data models
>
>
>
> Hi Acee,
>
> I think rather of the contrary, Static MPLS LSP must include TC and TTL.
> And Bottom-of-the-stack flag as well (I don't see it in grouping mpls-lab=
el-stack
> of the ietf-routing-types).
>
>
>
> Regards,
>
> Greg
>
>
>
> On Mon, Jun 5, 2017 at 4:55 PM, Acee Lindem (acee) <acee@cisco.com> wrote=
:
>
> Greg, et al,
>
>
>
> *From: *Greg Mirsky <gregimirsky@gmail.com>
> *Date: *Monday, June 5, 2017 at 6:28 PM
> *To: *"draft-ietf-rtgwg-routing-types@ietf.org" <draft-ietf-rtgwg-routing=
-
> types@ietf.org>, "draft-ietf-mpls-static-yang@ietf.org" <
> draft-ietf-mpls-static-yang@ietf.org>
> *Cc: *Routing WG <rtgwg@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>
> *Subject: *MPLS label and LSE data models
> *Resent-From: *<alias-bounces@ietf.org>
> *Resent-To: *Yingzhen Qu <yingzhen.qu@huawei.com>, <xufeng_liu@jabil.com>=
,
> Acee Lindem <acee@cisco.com>, Christian Hopps <chopps@chopps.org>, <
> lberger@labn.net>
> *Resent-Date: *Monday, June 5, 2017 at 6:28 PM
>
>
>
> Dear Authors, et.al,
>
> I've got a question, or several of them, about data models of MPLS label
> and MPLS label stack element (LSE). I ahve not followed the discussions a=
nd
> apologize if these already were considered, discussed.
>
> In the Routing Types document I've found that only MPLS label being
> modeled but not the MPLS LSE. As result, models that use
> rt-types:mpls-label, e.g. YANG DAta Model for MPLS Static LSPs, defines
> outgoing labels not as array of LSEs but as array (leaf-list) of MPLS
> labels. In the latter document I don't see how TTL and Traffic Class (TC)
> are presented for each of labels in the array. Hence my questions:
>
>    - should there be data model of MPLS LSE in rt-types (it does have TTL
>    and TC but separately);
>
>
>    - should data model of Static MPLS LSP use MPLS LSE model rather than
>    model of only 20 bit-long label.
>
> Where else so you see  a requirement for a label stack with entries that
> don=E2=80=99t contain TC and TTL? This seems specific to static provision=
ing of
> static LSPs rather than a general requirement for ietf-routing-types.
>
>
>
> Thanks,
>
> Acee
>
>
>
>
>
> Appreciate you comments.
>
>
>
> Regards,
>
> Greg
>
>
>

--001a114055529c4bd605514f2b8a
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Xufeng,<div>thank you for helping me with your insight.=
 I have couple follow-up questions:</div><div><ul><li>yes, grouping mpls-la=
bel-stack covers LSE though I cannot see why it needs id, sequence identifi=
er. I&#39;d expect the label stack already be properly ordered;</li><li>if =
we agree that the mpls-label-stack is ordered list, then figuring out which=
 LSE should have BoS set is indeed benign and may not require to be explici=
t;</li><li>as for Static MPLS LSP I propose:</li><ul><li>no need to have ou=
tgoing_label and outgoing_labels as the former is special case of the latte=
r;</li><li>consider whether to use rt-type:mpls-label-stack rather than rt-=
type:mpls-label. It gets tricky on transit nodes but we, it seems to me, ne=
ed operations on TTL and TC being explicit on ingress.</li></ul></ul><div>R=
egards,</div></div><div>Greg</div><div class=3D"gmail_extra"><br><div class=
=3D"gmail_quote">On Tue, Jun 6, 2017 at 8:05 AM, Xufeng Liu <span dir=3D"lt=
r">&lt;<a href=3D"mailto:Xufeng_Liu@jabil.com" target=3D"_blank">Xufeng_Liu=
@jabil.com</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" style=
=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">





<div lang=3D"EN-US" link=3D"blue" vlink=3D"purple">
<div class=3D"m_19761024394473048WordSection1">
<p class=3D"MsoNormal">Hi Greg,<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<ol style=3D"margin-top:0in" start=3D"1" type=3D"1">
<li class=3D"m_19761024394473048MsoListParagraph" style=3D"margin-left:0in"=
>As you mentioned, grouping mpls-label-stack is defined in routing-types, s=
o
<span style=3D"font-size:10.5pt;color:black">MPLS LSE is covered, right?</s=
pan><u></u><u></u></li><li class=3D"m_19761024394473048MsoListParagraph" st=
yle=3D"margin-left:0in">Bottom-of-the-stack flag should not be needed in th=
e model,=C2=A0 because the label stack is a list with sequence ID=E2=80=99s=
, which tell us the beginning and the end of the stack.<u></u><u></u></li><=
li class=3D"m_19761024394473048MsoListParagraph" style=3D"margin-left:0in">=
The discussion on static MPLS LSP has started, but not converged yet. There=
 are still open issues w.r.t. how to model the label stack and stack operat=
ions. Any suggestions would be
 appreciated. Do you have a proposal?<u></u><u></u></li></ol>
<p class=3D"MsoNormal">Thanks,<u></u><u></u></p>
<p class=3D"MsoNormal">- Xufeng<u></u><u></u></p>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> Greg Mirsky [mailto:<a href=3D"mailto:g=
regimirsky@gmail.com" target=3D"_blank">gregimirsky@gmail.com</a>] <br>
<b>Sent:</b> Monday, June 5, 2017 8:44 PM<br>
<b>To:</b> Acee Lindem (acee) &lt;<a href=3D"mailto:acee@cisco.com" target=
=3D"_blank">acee@cisco.com</a>&gt;<br>
<b>Cc:</b> <a href=3D"mailto:draft-ietf-rtgwg-routing-types@ietf.org" targe=
t=3D"_blank">draft-ietf-rtgwg-routing-<wbr>types@ietf.org</a>; <a href=3D"m=
ailto:draft-ietf-mpls-static-yang@ietf.org" target=3D"_blank">draft-ietf-mp=
ls-static-yang@<wbr>ietf.org</a>; <a href=3D"mailto:rtgwg@ietf.org" target=
=3D"_blank">rtgwg@ietf.org</a>; <a href=3D"mailto:mpls@ietf.org" target=3D"=
_blank">mpls@ietf.org</a><br>
<b>Subject:</b> Re: MPLS label and LSE data models<u></u><u></u></p>
</div>
</div><div><div class=3D"h5">
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">Hi Acee,<u></u><u></u></p>
<div>
<p class=3D"MsoNormal">I think rather of the contrary, Static MPLS LSP must=
 include TC and TTL. And Bottom-of-the-stack flag as well (I don&#39;t see =
it in grouping=C2=A0<span style=3D"font-size:10.0pt;color:black">mpls-label=
-stack of the ietf-routing-types).</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;color:black">Regards=
,</span><u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;color:black">Greg</s=
pan><u></u><u></u></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p class=3D"MsoNormal">On Mon, Jun 5, 2017 at 4:55 PM, Acee Lindem (acee) &=
lt;<a href=3D"mailto:acee@cisco.com" target=3D"_blank">acee@cisco.com</a>&g=
t; wrote:<u></u><u></u></p>
<blockquote style=3D"border:none;border-left:solid #cccccc 1.0pt;padding:0i=
n 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Greg, e=
t al,=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div style=3D"border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b><span style=3D"color:black">From: </span></b><spa=
n style=3D"color:black">Greg Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail=
.com" target=3D"_blank">gregimirsky@gmail.com</a>&gt;<br>
<b>Date: </b>Monday, June 5, 2017 at 6:28 PM<br>
<b>To: </b>&quot;<a href=3D"mailto:draft-ietf-rtgwg-routing-types@ietf.org"=
 target=3D"_blank">draft-ietf-rtgwg-routing-<wbr>types@ietf.org</a>&quot; &=
lt;<a href=3D"mailto:draft-ietf-rtgwg-routing-types@ietf.org" target=3D"_bl=
ank">draft-ietf-rtgwg-routing-<wbr>types@ietf.org</a>&gt;, &quot;<a href=3D=
"mailto:draft-ietf-mpls-static-yang@ietf.org" target=3D"_blank">draft-ietf-=
mpls-static-yang@<wbr>ietf.org</a>&quot;
 &lt;<a href=3D"mailto:draft-ietf-mpls-static-yang@ietf.org" target=3D"_bla=
nk">draft-ietf-mpls-static-yang@<wbr>ietf.org</a>&gt;<br>
<b>Cc: </b>Routing WG &lt;<a href=3D"mailto:rtgwg@ietf.org" target=3D"_blan=
k">rtgwg@ietf.org</a>&gt;, &quot;<a href=3D"mailto:mpls@ietf.org" target=3D=
"_blank">mpls@ietf.org</a>&quot; &lt;<a href=3D"mailto:mpls@ietf.org" targe=
t=3D"_blank">mpls@ietf.org</a>&gt;<br>
<b>Subject: </b>MPLS label and LSE data models<br>
<b>Resent-From: </b>&lt;<a href=3D"mailto:alias-bounces@ietf.org" target=3D=
"_blank">alias-bounces@ietf.org</a>&gt;<br>
<b>Resent-To: </b>Yingzhen Qu &lt;<a href=3D"mailto:yingzhen.qu@huawei.com"=
 target=3D"_blank">yingzhen.qu@huawei.com</a>&gt;, &lt;<a href=3D"mailto:xu=
feng_liu@jabil.com" target=3D"_blank">xufeng_liu@jabil.com</a>&gt;, Acee Li=
ndem &lt;<a href=3D"mailto:acee@cisco.com" target=3D"_blank">acee@cisco.com=
</a>&gt;,
 Christian Hopps &lt;<a href=3D"mailto:chopps@chopps.org" target=3D"_blank"=
>chopps@chopps.org</a>&gt;, &lt;<a href=3D"mailto:lberger@labn.net" target=
=3D"_blank">lberger@labn.net</a>&gt;<br>
<b>Resent-Date: </b>Monday, June 5, 2017 at 6:28 PM<u></u><u></u></span></p=
>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<blockquote style=3D"border:none;border-left:solid #b5c4df 4.5pt;padding:0i=
n 0in 0in 4.0pt;margin-left:3.75pt;margin-right:0in" id=3D"m_19761024394473=
048m_-1503950414117794461MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE">
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Dear Au=
thors, <a href=3D"http://et.al" target=3D"_blank">
et.al</a>, <u></u><u></u></span></p>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">I&#39;v=
e got a question, or several of them, about data models of MPLS label and M=
PLS label stack element (LSE). I ahve not followed the discussions and apol=
ogize if these already were considered,
 discussed.<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">In the =
Routing Types document I&#39;ve found that only MPLS label being modeled bu=
t not the MPLS LSE. As result, models that use rt-types:mpls-label, e.g. YA=
NG DAta Model for MPLS Static LSPs, defines
 outgoing labels not as array of LSEs but as array (leaf-list) of MPLS labe=
ls. In the latter document I don&#39;t see how TTL and Traffic Class (TC) a=
re presented for each of labels in the array. Hence my questions:<u></u><u>=
</u></span></p>
</div>
<div>
<ul type=3D"disc">
<li class=3D"MsoNormal" style=3D"color:black;margin-left:0in">
<span style=3D"font-size:10.5pt">should there be data model of MPLS LSE in =
rt-types (it does have TTL and TC but separately);<u></u><u></u></span></li=
></ul>
</div>
</div>
</div>
</div>
</blockquote>
<blockquote style=3D"border:none;border-left:solid #b5c4df 4.5pt;padding:0i=
n 0in 0in 4.0pt;margin-left:3.75pt;margin-right:0in" id=3D"m_19761024394473=
048m_-1503950414117794461MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE">
<div>
<div>
<div>
<div>
<ul type=3D"disc">
<li class=3D"MsoNormal" style=3D"color:black;margin-left:0in">
<span style=3D"font-size:10.5pt">should data model of Static MPLS LSP use M=
PLS LSE model rather than model of only 20 bit-long label.<u></u><u></u></s=
pan></li></ul>
</div>
</div>
</div>
</div>
</blockquote>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Where e=
lse so you see =C2=A0a requirement for a label stack with entries that don=
=E2=80=99t contain TC and TTL? This seems specific to static provisioning o=
f static LSPs rather than a general requirement for
 ietf-routing-types.=C2=A0<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Thanks,=
<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Acee<u>=
</u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<blockquote style=3D"border:none;border-left:solid #b5c4df 4.5pt;padding:0i=
n 0in 0in 4.0pt;margin-left:3.75pt;margin-right:0in" id=3D"m_19761024394473=
048m_-1503950414117794461MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE">
<div>
<div>
<div>
<div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Appreci=
ate you comments.<u></u><u></u></span></p>
</div>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black"><u></u>=
=C2=A0<u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Regards=
,<u></u><u></u></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.5pt;color:black">Greg<u>=
</u><u></u></span></p>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</blockquote>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
</div></div></div>
</div>
</div>

</blockquote></div><br></div></div>

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From: Xufeng Liu <Xufeng_Liu@jabil.com>
To: Greg Mirsky <gregimirsky@gmail.com>
CC: "Acee Lindem (acee)" <acee@cisco.com>, "draft-ietf-rtgwg-routing-types@ietf.org" <draft-ietf-rtgwg-routing-types@ietf.org>, "draft-ietf-mpls-static-yang@ietf.org" <draft-ietf-mpls-static-yang@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: MPLS label and LSE data models
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/a6VkKx3-H3DVPt9RLBi4e9FbSok>
Subject: Re: [mpls] MPLS label and LSE data models
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From: Greg Shepherd <gjshep@gmail.com>
Date: Tue, 6 Jun 2017 14:16:11 -0700
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To: Stewart Bryant <stewart.bryant@gmail.com>
Cc: "bier@ietf.org" <bier@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>,  "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>
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Subject: Re: [mpls] [Bier] WGLC: draft-ietf-bier-mpls-encapsulation-06
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--001a11357a020dcb400551512178
Content-Type: text/plain; charset="UTF-8"

MPLS Chairs,

Inline:

On Mon, May 8, 2017 at 7:52 AM, Stewart Bryant <stewart.bryant@gmail.com>
wrote:

> Please could you clarify whether this document is being reviewed by the
> MPLS WG as part of this process?
>
Yes, MPLS WG review is our next step. The draft cleared WGLC in the BIER
WG, so we need your review before WG LC support before proceeding.

Thanks,
Greg
(BIER Chairs)

On 05/05/2017 23:58, Greg Shepherd wrote:
>
> At WG meeting, IETF97 in Chicago, we decided to move forward to WGLC for
> some of our docs. We learned that even once published the IESG has a
> process to change the track of the RFC if the WG makes the case to move the
> work from Informational to Standards track. The feedback from operators is
> that RFC status was more important than track, and we won't be able to meet
> our charter requirements to change track without deployment experience and
> operator support.
>
> This email starts a two week timer for feedback on the draft:
> https://datatracker.ietf.org/doc/draft-ietf-bier-mpls-encapsulation/
>
> Please read and respond do this thread. EOWGLC - 20/5/17
>
> Thank you,
> Chairs
>
>
> _______________________________________________
> BIER mailing listBIER@ietf.orghttps://www.ietf.org/mailman/listinfo/bier
>
>
>
> _______________________________________________
> BIER mailing list
> BIER@ietf.org
> https://www.ietf.org/mailman/listinfo/bier
>
>

--001a11357a020dcb400551512178
Content-Type: text/html; charset="UTF-8"
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<div dir=3D"ltr"><div class=3D"gmail_extra">MPLS Chairs,</div><div class=3D=
"gmail_extra"><br></div><div class=3D"gmail_extra">Inline:</div><div class=
=3D"gmail_extra"><br><div class=3D"gmail_quote">On Mon, May 8, 2017 at 7:52=
 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"margin:0 0 0 .8ex;border-lef=
t:1px #ccc solid;padding-left:1ex">
 =20
   =20
 =20
  <div bgcolor=3D"#FFFFFF" text=3D"#000000">
    <p>Please could you clarify whether this document is being reviewed
      by the MPLS WG as part of this process?</p></div></blockquote><div>Ye=
s, MPLS WG review is our next step. The draft cleared WGLC in the BIER WG, =
so we need your review before WG LC support before proceeding.</div><div><b=
r></div><div>Thanks,</div><div>Greg</div><div>(BIER Chairs)</div><div><br><=
/div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-le=
ft:1px #ccc solid;padding-left:1ex"><div bgcolor=3D"#FFFFFF" text=3D"#00000=
0"><div><div class=3D"h5">
    <div class=3D"m_-493218826352586193moz-cite-prefix">On 05/05/2017 23:58=
, Greg Shepherd
      wrote:<br>
    </div>
    </div></div><blockquote type=3D"cite"><div><div class=3D"h5">
      <div dir=3D"ltr"><span style=3D"font-size:12.800000190734863px">At WG
          meeting, IETF97 in Chicago, we decided to move forward to=C2=A0</=
span><span class=3D"m_-493218826352586193gmail-m_3703177797471194664gmail-i=
l" style=3D"font-size:12.800000190734863px">WGLC</span><span style=3D"font-=
size:12.800000190734863px">=C2=A0for some of our docs.
          We learned that even once published the IESG has a process to
          change the track of the RFC if the WG makes the case to move
          the work from Informational to Standards track. The feedback
          from operators is that RFC status was more important than
          track, and we won&#39;t be able to meet our charter requirements
          to change track without deployment experience and operator
          support.</span><br style=3D"font-size:12.800000190734863px">
        <div style=3D"font-size:12.800000190734863px"><br>
        </div>
        <div style=3D"font-size:12.800000190734863px">This email starts a
          two week timer for feedback on the draft:</div>
        <div style=3D"font-size:12.800000190734863px"><a href=3D"https://da=
tatracker.ietf.org/doc/draft-ietf-bier-mpls-encapsulation/" target=3D"_blan=
k">https://datatracker.ietf.org/<wbr>doc/draft-ietf-bier-mpls-<wbr>encapsul=
ation/</a><br>
        </div>
        <div style=3D"font-size:12.800000190734863px"><br>
        </div>
        <div style=3D"font-size:12.800000190734863px">Please read and
          respond do this thread. EOWGLC - 20/5/17</div>
        <div style=3D"font-size:12.800000190734863px"><br>
        </div>
        <div style=3D"font-size:12.800000190734863px">Thank you,</div>
        <div style=3D"font-size:12.800000190734863px">Chairs</div>
      </div>
      <br>
      <fieldset class=3D"m_-493218826352586193mimeAttachmentHeader"></field=
set>
      <br>
      </div></div><span class=3D""><pre>______________________________<wbr>=
_________________
BIER mailing list
<a class=3D"m_-493218826352586193moz-txt-link-abbreviated" href=3D"mailto:B=
IER@ietf.org" target=3D"_blank">BIER@ietf.org</a>
<a class=3D"m_-493218826352586193moz-txt-link-freetext" href=3D"https://www=
.ietf.org/mailman/listinfo/bier" target=3D"_blank">https://www.ietf.org/mai=
lman/<wbr>listinfo/bier</a>
</pre>
    </span></blockquote>
    <br>
  </div>

<br>______________________________<wbr>_________________<br>
BIER mailing list<br>
<a href=3D"mailto:BIER@ietf.org">BIER@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/bier" rel=3D"noreferrer" t=
arget=3D"_blank">https://www.ietf.org/mailman/<wbr>listinfo/bier</a><br>
<br></blockquote></div><br></div></div>

--001a11357a020dcb400551512178--


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From: Mach Chen <mach.chen@huawei.com>
To: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
CC: "draft-ietf-mpls-spring-lsp-ping@ietf.org" <draft-ietf-mpls-spring-lsp-ping@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "spring@ietf.org" <spring@ietf.org>
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From nobody Thu Jun  8 02:44:07 2017
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To: "mpls@ietf.org" <mpls@ietf.org>, "draft-bryant-mpls-rfc6374-sfl@ietf.org" <draft-bryant-mpls-rfc6374-sfl@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>
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From: Loa Andersson <loa@pi.nu>
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Subject: [mpls] Closed: working group adoption poll on draft-bryant-mpls-rfc6374-sfl
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Working Group,

This adoption poll is closed and we have a new working group document.

Can the authors please post draft-ietf-mpls-rfc6374-sfl, without any
changes (compared to the document we polled) than administrative.

/Loa
mpls wg co-chair

On 2017-05-12 08:57, Loa Andersson wrote:
> Working Group,
>
> This is to start a two week poll on adopting draft-bryant-
> mpls-rfc6374-sfl-04 as a MPLS working group document.
>
> Please send your comments (support/not support) to the mpls working
> group mailing list (mpls@ietf.org). Please give a technical
> motivation for your support/not support, especially if you think that
> the document should not be adopted as a working group document.
>
> There two IPR disclosure against this document.
>
>
> All the authors have stated on the MPLS wg mailing list that they are
> unaware of any other IPRs that those that has been disclosed
>
> The working group adoption poll ends May 26, 2017.
>
> /Loa
> mpls wg co-chair

-- 


Loa Andersson                        email: loa@mail01.huawei.com
Senior MPLS Expert                          loa@pi.nu
Huawei Technologies (consultant)     phone: +46 739 81 21 64


From nobody Thu Jun  8 14:47:32 2017
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Subject: [mpls] Secdir last call review of draft-ietf-mpls-app-aware-tldp-08
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Reviewer: Yoav Nir
Review result: Has Nits

I have reviewed this document as part of the security directorate's ongoing
effort to review all IETF documents being processed by the IESG. These comments
were written primarily for the benefit of the security area directors. Document
editors and WG chairs should treat these comments just like any other last call
comments.

My biggest issue with this document is that it is hard to read.  For example,
the Introduction expands tLDP to "targeted LDP", and the Introduction begins
with "LDP uses extended discovery...", but LDP itself is only expanded to
"label distribution protocol" in the IANA considerations section.  Similarly,
the much-overloaded term "application" is never explained except that some
applications are "targeted" and that "FEC 128 pseudowire" is an example of an
application.  I am sure this makes sense to participants of the MPLS working
group, but to others this is much harder. There needs to be at least a
reference to RFC 5036 where these terms are better explained (RFC 5036 is
referenced but only as the document where tLDP adjacency is described).

Nits:
The Security Considerations section begins with "The Capability procedure
described in this document will apply and does not introduce any change to LDP
Security Considerations".  The procedure will apply what?  Or will apply to
what?  I think the words "will apply and" are superfluous.

The second paragraph seems to be repeating part of the (rather extensive)
security considerations of RFC 5036, but it does not say why (or even whether)
that particular anti-DoS measure applies in particular to the mechanism
described in this document. IOW why is this measure singled out from among the
three pages of security considerations from RFC 5036?

The third paragraph is not clear to me. It talks about two nodes not
establishing a tLDP session if they don't support the same application. I don't
know why that belongs in the security considerations section. The SHOULD NOT
(establish a session) mandate definitely does not belong there.



From nobody Thu Jun  8 22:52:09 2017
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From: Sri <sriganeshkini@gmail.com>
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--001a1147c4eea02cb60551809184
Content-Type: text/plain; charset="UTF-8"

Not aware of any IPR.

Sri

On Mon, Jun 5, 2017 at 12:39 AM, Loa Andersson <loa@pi.nu> wrote:

> Working Group, authors,
>
> We have started to prepare the the draft-ietf-mpls-spring-lsp-ping for
> wglc, prior to the wglc we need to do an IPR poll.
>
> This mail starts this IPR poll.
>
> Are you aware of any IPR that applies to
> draft-ietf-mpls-spring-lsp-ping?
>
> If so, has this IPR been disclosed in compliance with IETF IPR rules
> (see RFCs 3979, 4879, 3669 and 5378 for more details).
>
> No IPR disclosures have been submitted directly on draft-ietf-mpls-
> spring-lsp-ping or the individual document it replaced.
>
> If you are listed as a document author or contributor please respond to
> this email regardless of whether or not you are aware of any relevant
> IPR. *The response needs to be sent to the MPLS WG mailing list.* The
> document will not advance to the next stage until a response has been
> received from each author and contributor.
>
> If you are on the MPLS WG email list but are not listed as an author or
> contributor, then please explicitly respond only if you are aware of any
> IPR that has not yet been disclosed in conformance with IETF rules.
>
> Since this document might be of interest for the SPRING wg, it has been
> copied to the SPRING wg mailing list.
>
> /Loa
> mpls wg co-chair
> --
>
>
> Loa Andersson                        email: loa@mail01.huawei.com
> Senior MPLS Expert                          loa@pi.nu
> Huawei Technologies (consultant)     phone: +46 739 81 21 64
>

--001a1147c4eea02cb60551809184
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<div dir=3D"ltr">Not aware of any IPR.<div><br></div><div>Sri</div></div><d=
iv class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Mon, Jun 5, 2017=
 at 12:39 AM, Loa Andersson <span dir=3D"ltr">&lt;<a href=3D"mailto:loa@pi.=
nu" target=3D"_blank">loa@pi.nu</a>&gt;</span> wrote:<br><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">Working Group, authors,<br>
<br>
We have started to prepare the the draft-ietf-mpls-spring-lsp-pin<wbr>g for=
<br>
wglc, prior to the wglc we need to do an IPR poll.<br>
<br>
This mail starts this IPR poll.<br>
<br>
Are you aware of any IPR that applies to<br>
draft-ietf-mpls-spring-lsp-pin<wbr>g?<br>
<br>
If so, has this IPR been disclosed in compliance with IETF IPR rules<br>
(see RFCs 3979, 4879, 3669 and 5378 for more details).<br>
<br>
No IPR disclosures have been submitted directly on draft-ietf-mpls-<br>
spring-lsp-ping or the individual document it replaced.<br>
<br>
If you are listed as a document author or contributor please respond to<br>
this email regardless of whether or not you are aware of any relevant<br>
IPR. *The response needs to be sent to the MPLS WG mailing list.* The<br>
document will not advance to the next stage until a response has been<br>
received from each author and contributor.<br>
<br>
If you are on the MPLS WG email list but are not listed as an author or<br>
contributor, then please explicitly respond only if you are aware of any<br=
>
IPR that has not yet been disclosed in conformance with IETF rules.<br>
<br>
Since this document might be of interest for the SPRING wg, it has been<br>
copied to the SPRING wg mailing list.<br>
<br>
/Loa<br>
mpls wg co-chair<span class=3D"HOEnZb"><font color=3D"#888888"><br>
-- <br>
<br>
<br>
Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 email: <a href=3D"mailto:loa@mail01.huawei.com" targe=
t=3D"_blank">loa@mail01.huawei.com</a><br>
Senior MPLS Expert=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 <a href=3D"mailto:loa@pi.nu" target=3D"_=
blank">loa@pi.nu</a><br>
Huawei Technologies (consultant)=C2=A0 =C2=A0 =C2=A0phone: <a href=3D"tel:%=
2B46%20739%2081%2021%2064" value=3D"+46739812164" target=3D"_blank">+46 739=
 81 21 64</a><br>
</font></span></blockquote></div><br></div>

--001a1147c4eea02cb60551809184--


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From: Nobo Akiya <nobo.akiya.dev@gmail.com>
Date: Fri, 9 Jun 2017 20:28:23 +0900
Message-ID: <CAFqGwGuP7TJQ8C-iAO=-Rb7LEHfKXDLca7KarXhP4_x=DG50qw@mail.gmail.com>
To: Loa Andersson <loa@pi.nu>
Cc: "mpls@ietf.org" <mpls@ietf.org>,  "draft-ietf-mpls-spring-lsp-ping@ietf.org" <draft-ietf-mpls-spring-lsp-ping@ietf.org>,  "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "spring@ietf.org" <spring@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/3xJ-LOC2VBrzgBF5Obq5_wijTgE>
Subject: Re: [mpls] IPR poll on draft-ietf-mpls-spring-lsp-ping
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--001a114178f6630c3a0551854466
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Hi Loa,

I am not aware of any IPR that applies to draft-ietf-mpls-spring-lsp-ping.

Regards,
Nobo

On Mon, Jun 5, 2017 at 4:39 PM, Loa Andersson <loa@pi.nu> wrote:

> Working Group, authors,
>
> We have started to prepare the the draft-ietf-mpls-spring-lsp-ping for
> wglc, prior to the wglc we need to do an IPR poll.
>
> This mail starts this IPR poll.
>
> Are you aware of any IPR that applies to
> draft-ietf-mpls-spring-lsp-ping?
>
> If so, has this IPR been disclosed in compliance with IETF IPR rules
> (see RFCs 3979, 4879, 3669 and 5378 for more details).
>
> No IPR disclosures have been submitted directly on draft-ietf-mpls-
> spring-lsp-ping or the individual document it replaced.
>
> If you are listed as a document author or contributor please respond to
> this email regardless of whether or not you are aware of any relevant
> IPR. *The response needs to be sent to the MPLS WG mailing list.* The
> document will not advance to the next stage until a response has been
> received from each author and contributor.
>
> If you are on the MPLS WG email list but are not listed as an author or
> contributor, then please explicitly respond only if you are aware of any
> IPR that has not yet been disclosed in conformance with IETF rules.
>
> Since this document might be of interest for the SPRING wg, it has been
> copied to the SPRING wg mailing list.
>
> /Loa
> mpls wg co-chair
> --
>
>
> Loa Andersson                        email: loa@mail01.huawei.com
> Senior MPLS Expert                          loa@pi.nu
> Huawei Technologies (consultant)     phone: +46 739 81 21 64
>

--001a114178f6630c3a0551854466
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Loa,<div><br></div><div><span style=3D"font-size:12.8px=
">I am not aware of any IPR that applies to=C2=A0</span><span class=3D"gmai=
l-il" style=3D"font-size:12.8px;background-color:rgb(255,255,255)">draft</s=
pan><span style=3D"font-size:12.8px">-</span><span class=3D"gmail-il" style=
=3D"font-size:12.8px;background-color:rgb(255,255,255)">ietf</span><span st=
yle=3D"font-size:12.8px">-</span><span class=3D"gmail-il" style=3D"font-siz=
e:12.8px;background-color:rgb(255,255,255)">mpls</span><span style=3D"font-=
size:12.8px">-</span><span class=3D"gmail-il" style=3D"font-size:12.8px;bac=
kground-color:rgb(255,255,255)">spring</span><span style=3D"font-size:12.8p=
x">-</span><span class=3D"gmail-il" style=3D"font-size:12.8px;background-co=
lor:rgb(255,255,255)">lsp</span><span style=3D"font-size:12.8px">-</span><w=
br style=3D"font-size:12.8px"><span class=3D"gmail-il" style=3D"font-size:1=
2.8px;background-color:rgb(255,255,255)">ping</span><span style=3D"font-siz=
e:12.8px">.</span><br style=3D"font-size:12.8px"><br style=3D"font-size:12.=
8px"><span style=3D"font-size:12.8px">Regards,<br></span>Nobo</div></div><d=
iv class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Mon, Jun 5, 2017=
 at 4:39 PM, Loa Andersson <span dir=3D"ltr">&lt;<a href=3D"mailto:loa@pi.n=
u" target=3D"_blank">loa@pi.nu</a>&gt;</span> wrote:<br><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">Working Group, authors,<br>
<br>
We have started to prepare the the draft-ietf-mpls-spring-lsp-pin<wbr>g for=
<br>
wglc, prior to the wglc we need to do an IPR poll.<br>
<br>
This mail starts this IPR poll.<br>
<br>
Are you aware of any IPR that applies to<br>
draft-ietf-mpls-spring-lsp-pin<wbr>g?<br>
<br>
If so, has this IPR been disclosed in compliance with IETF IPR rules<br>
(see RFCs 3979, 4879, 3669 and 5378 for more details).<br>
<br>
No IPR disclosures have been submitted directly on draft-ietf-mpls-<br>
spring-lsp-ping or the individual document it replaced.<br>
<br>
If you are listed as a document author or contributor please respond to<br>
this email regardless of whether or not you are aware of any relevant<br>
IPR. *The response needs to be sent to the MPLS WG mailing list.* The<br>
document will not advance to the next stage until a response has been<br>
received from each author and contributor.<br>
<br>
If you are on the MPLS WG email list but are not listed as an author or<br>
contributor, then please explicitly respond only if you are aware of any<br=
>
IPR that has not yet been disclosed in conformance with IETF rules.<br>
<br>
Since this document might be of interest for the SPRING wg, it has been<br>
copied to the SPRING wg mailing list.<br>
<br>
/Loa<br>
mpls wg co-chair<span class=3D"HOEnZb"><font color=3D"#888888"><br>
-- <br>
<br>
<br>
Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 email: <a href=3D"mailto:loa@mail01.huawei.com" targe=
t=3D"_blank">loa@mail01.huawei.com</a><br>
Senior MPLS Expert=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 <a href=3D"mailto:loa@pi.nu" target=3D"_=
blank">loa@pi.nu</a><br>
Huawei Technologies (consultant)=C2=A0 =C2=A0 =C2=A0phone: <a href=3D"tel:%=
2B46%20739%2081%2021%2064" value=3D"+46739812164" target=3D"_blank">+46 739=
 81 21 64</a><br>
</font></span></blockquote></div><br></div>

--001a114178f6630c3a0551854466--


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From: <bruno.decraene@orange.com>
To: Keyur Patel <keyur@arrcus.com>, idr wg <idr@ietf.org>
CC: "mpls@ietf.org" <mpls@ietf.org>, "draft-decraene-idr-next-hop-capability@ietf.org" <draft-decraene-idr-next-hop-capability@ietf.org>, John G.Scudder <jgs@juniper.net>
Thread-Topic: [Idr] Working Group adoption call for draft-decraene-idr-next-hop-capability-03
Thread-Index: AQHS0QIJYQaYgmju5kW1w24bFzBjqKIhBZaw
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From nobody Mon Jun 12 03:37:39 2017
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Subject: [mpls] I-D Action: draft-ietf-mpls-rfc6374-sfl-00.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching of the IETF.

        Title           : RFC6374 Synonymous Flow Labels
        Authors         : Stewart Bryant
                          Mach Chen
                          Zhenbin Li
                          George Swallow
                          Siva Sivabalan
                          Gregory Mirsky
                          Giuseppe Fioccola
	Filename        : draft-ietf-mpls-rfc6374-sfl-00.txt
	Pages           : 20
	Date            : 2017-06-12

Abstract:
   This document describes a method of making RFC6374 performance
   measurements on flows carried over an MPLS Label Switched path.  This
   allows loss and delay measurements to be made on multi-point to point
   LSPs and allows the measurement of flows within an MPLS construct
   using RFC6374.


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From nobody Mon Jun 12 04:51:54 2017
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Subject: [mpls] I-D Action: draft-ietf-mpls-tp-shared-ring-protection-06.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching of the IETF.

        Title           : Shared-Ring protection (MSRP) mechanism for ring topology
        Authors         : Weiqiang Cheng
                          Lei Wang
                          Han Li
                          Huub van Helvoort
                          Jie Dong
	Filename        : draft-ietf-mpls-tp-shared-ring-protection-06.txt
	Pages           : 53
	Date            : 2017-06-12

Abstract:
   This document describes requirements, architecture and solutions for
   MPLS-TP Shared Ring Protection (MSRP) in a ring topology for point-
   to-point (P2P) services.  The MSRP mechanism is described to meet the
   ring protection requirements as described in RFC 5654.  This document
   defines the Ring Protection Switch (RPS) Protocol that is used to
   coordinate the protection behavior of the nodes on MPLS ring.



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From nobody Mon Jun 12 11:56:45 2017
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From: "Faisal Iqbal (faiqbal)" <faiqbal@cisco.com>
To: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
CC: "spring@ietf.org" <spring@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "draft-ietf-mpls-spring-lsp-ping@ietf.org" <draft-ietf-mpls-spring-lsp-ping@ietf.org>
Thread-Topic: [spring] IPR poll on draft-ietf-mpls-spring-lsp-ping
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Date: Mon, 12 Jun 2017 18:56:38 +0000
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Subject: Re: [mpls] [spring] IPR poll on draft-ietf-mpls-spring-lsp-ping
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Hi Loa,
I'm not aware of any IPR applying to draft-ietf-mpls-spring-lsp-ping.

Regards,
Faisal


-----Original Message-----
From: spring [mailto:spring-bounces@ietf.org] On Behalf Of Loa Andersson
Sent: Monday, June 5, 2017 3:39 AM
To: mpls@ietf.org
Cc: spring@ietf.org; mpls-chairs@ietf.org; draft-ietf-mpls-spring-lsp-ping@=
ietf.org
Subject: [spring] IPR poll on draft-ietf-mpls-spring-lsp-ping

Working Group, authors,

We have started to prepare the the draft-ietf-mpls-spring-lsp-ping for wglc=
, prior to the wglc we need to do an IPR poll.

This mail starts this IPR poll.

Are you aware of any IPR that applies to draft-ietf-mpls-spring-lsp-ping?

If so, has this IPR been disclosed in compliance with IETF IPR rules (see R=
FCs 3979, 4879, 3669 and 5378 for more details).

No IPR disclosures have been submitted directly on draft-ietf-mpls- spring-=
lsp-ping or the individual document it replaced.

If you are listed as a document author or contributor please respond to thi=
s email regardless of whether or not you are aware of any relevant IPR. *Th=
e response needs to be sent to the MPLS WG mailing list.* The document will=
 not advance to the next stage until a response has been received from each=
 author and contributor.

If you are on the MPLS WG email list but are not listed as an author or con=
tributor, then please explicitly respond only if you are aware of any IPR t=
hat has not yet been disclosed in conformance with IETF rules.

Since this document might be of interest for the SPRING wg, it has been cop=
ied to the SPRING wg mailing list.

/Loa
mpls wg co-chair
--=20


Loa Andersson                        email: loa@mail01.huawei.com
Senior MPLS Expert                          loa@pi.nu
Huawei Technologies (consultant)     phone: +46 739 81 21 64

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


From nobody Mon Jun 12 22:28:36 2017
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Subject: [mpls] [Errata Verified] RFC3031 (5002)
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The following errata report has been verified for RFC3031,
"Multiprotocol Label Switching Architecture". 

--------------------------------------
You may review the report below and at:
http://www.rfc-editor.org/errata/eid5002

--------------------------------------
Status: Verified
Type: Editorial

Reported by: Eric Gray <eric.gray@ericsson.com>
Date Reported: 2017-04-21
Verified by: RFC Editor  

Section: 3.8

Original Text
-------------
   Liberal label retention mode allows for quicker adaptation to routing
   changes, but conservative label retention mode though requires an LSR
   to maintain many fewer labels.

Corrected Text
--------------
   Liberal label retention mode allows for quicker adaptation to routing
   changes, while conservative label retention mode requires an LSR to
   maintain many fewer labels.

Notes
-----
Grammar error in original text, which may make it harder for some to read and understand.
Verifier Notes: (removed the spurious "though")

--------------------------------------
RFC3031 (draft-ietf-mpls-arch-06)
--------------------------------------
Title               : Multiprotocol Label Switching Architecture
Publication Date    : January 2001
Author(s)           : E. Rosen, A. Viswanathan, R. Callon
Category            : PROPOSED STANDARD
Source              : Multiprotocol Label Switching
Area                : Routing
Stream              : IETF


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Dear WG,

This mail closes the 3rd WG Last Call for draft-ietf-mpls-bfd-directed.

As a result we still do not have consensus to request publication for this =
document and there are a couple of issues which need to be addressed:

-       We have strong technical comments that need to be resolved, the wor=
king group chairs would like to encourage the authors and Carlos to work to=
gether to see if it possible to resolve the technical issues. From our unde=
rstanding this work is already in progress.
-       Carlos has also pointed out a procedural issue, the document should=
 have been brought to the attention of the bfd WG. We'll make sure that thi=
s happens if and when a version that resolve the technical issue mentioned =
above is posted.

The earlier IPR issues seems to be resolved.

Best regards

Nic




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<div>Dear WG,</div>
<div>&nbsp;</div>
<div>This mail closes the 3rd WG Last Call for draft-ietf-mpls-bfd-directed=
. </div>
<div>&nbsp;</div>
<div>As a result we still do not have consensus to request publication for =
this document and there are a couple of issues which need to be addressed: =
</div>
<div><font face=3D"Times New Roman" size=3D"3"><span style=3D"font-size:12p=
t;">&nbsp;</span></font></div>
<ul style=3D"margin:0;padding-left:36pt;">
<li>We have strong technical comments that need to be resolved, the working=
 group chairs would like to encourage the authors and Carlos to work togeth=
er to see if it possible to resolve the technical issues. From our understa=
nding this work is already in progress.
</li><li>Carlos has also pointed out a procedural issue, the document shoul=
d have been brought to the attention of the bfd WG. We'll make sure that th=
is happens if and when a version that resolve the technical issue mentioned=
 above is posted.</li></ul>
<div><font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt;">&nbs=
p;</span></font></div>
<div>The earlier IPR issues seems to be resolved.</div>
<div>&nbsp;</div>
<div>Best regards</div>
<div>&nbsp;</div>
<div>Nic</div>
<div><font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt;">&nbs=
p;</span></font></div>
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t;">&nbsp;</span></font></div>
<div><font face=3D"Times New Roman" size=3D"3"><span style=3D"font-size:12p=
t;">&nbsp;</span></font></div>
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From nobody Tue Jun 13 11:00:25 2017
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching of the IETF.

        Title           : Bidirectional Forwarding Detection (BFD) Directed Return Path
        Authors         : Greg Mirsky
                          Jeff  Tantsura
                          Ilya Varlashkin
                          Mach(Guoyi) Chen
	Filename        : draft-ietf-mpls-bfd-directed-07.txt
	Pages           : 8
	Date            : 2017-06-13

Abstract:
   Bidirectional Forwarding Detection (BFD) is expected to be able to
   monitor wide variety of encapsulations of paths between systems.
   When a BFD session monitors an explicitly routed unidirectional path
   there may be a need to direct egress BFD peer to use a specific path
   for the reverse direction of the BFD session.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-mpls-bfd-directed/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-mpls-bfd-directed-07
https://datatracker.ietf.org/doc/html/draft-ietf-mpls-bfd-directed-07

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-bfd-directed-07


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


From nobody Tue Jun 13 11:07:22 2017
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Tue, 13 Jun 2017 11:07:16 -0700
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To: "n.leymann@telekom.de" <N.Leymann@telekom.de>
Cc: "mpls@ietf.org" <mpls@ietf.org>, mpls-chairs@ietf.org,  Jeff Tantsura <jefftant.ietf@gmail.com>, iLya <Ilya@nobulus.com>,  Mach Chen <mach.chen@huawei.com>, "cpignata@cisco.com" <cpignata@cisco.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/0XqrfsHZcpbHJQzswtXqrfm6BkM>
Subject: Re: [mpls] Closed: 3rd WG Last Call for draft-ietf-mpls-bfd-directed
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--001a113cd192513e3d0551db4ec1
Content-Type: text/plain; charset="UTF-8"

Hi Nick,
authors greatly appreciate the consideration and comments this work
received during the WG LC. Update to address technical and editorial
comments just been posted as 07 version
<https://datatracker.ietf.org/doc/draft-ietf-mpls-bfd-directed/>. We invite
all who participated in the discussion to check the latest version and let
us know if their comments have been addressed.
It is unfortunate if BFD WG was not informed of the MPLS WG LC. Updates on
this work had been presented and discussed at BFD WG meetings with the
last presentation
at IETF-92 <https://www.ietf.org/proceedings/92/bfd.html>.

Regards,
Greg

On Tue, Jun 13, 2017 at 1:58 AM, <N.Leymann@telekom.de> wrote:

> Dear WG,
>
> This mail closes the 3rd WG Last Call for draft-ietf-mpls-bfd-directed.
>
> As a result we still do not have consensus to request publication for this
> document and there are a couple of issues which need to be addressed:
>
>
>    - We have strong technical comments that need to be resolved, the
>    working group chairs would like to encourage the authors and Carlos to work
>    together to see if it possible to resolve the technical issues. From our
>    understanding this work is already in progress.
>    - Carlos has also pointed out a procedural issue, the document should
>    have been brought to the attention of the bfd WG. We'll make sure that this
>    happens if and when a version that resolve the technical issue mentioned
>    above is posted.
>
>
> The earlier IPR issues seems to be resolved.
>
> Best regards
>
> Nic
>
>
>
>

--001a113cd192513e3d0551db4ec1
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Hi Nick,<div>authors greatly appreciate the consideration =
and comments this work received during the WG LC. Update to address technic=
al and editorial comments just been posted as<a href=3D"https://datatracker=
.ietf.org/doc/draft-ietf-mpls-bfd-directed/"> 07 version</a>. We invite all=
 who participated in the discussion to check the latest version and let us =
know if their comments have been addressed.</div><div>It is unfortunate if =
BFD WG was not informed of the MPLS WG LC. Updates on this work had been pr=
esented and discussed at BFD WG meetings with the last <a href=3D"https://w=
ww.ietf.org/proceedings/92/bfd.html">presentation at IETF-92</a>.</div><div=
><br></div><div>Regards,</div><div>Greg</div></div><div class=3D"gmail_extr=
a"><br><div class=3D"gmail_quote">On Tue, Jun 13, 2017 at 1:58 AM,  <span d=
ir=3D"ltr">&lt;<a href=3D"mailto:N.Leymann@telekom.de" target=3D"_blank">N.=
Leymann@telekom.de</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quot=
e" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">






<div>
<font face=3D"Consolas" size=3D"2"><span style=3D"font-size:10.5pt">
<div>Dear WG,</div>
<div>=C2=A0</div>
<div>This mail closes the 3rd WG Last Call for draft-ietf-mpls-bfd-directed=
. </div>
<div>=C2=A0</div>
<div>As a result we still do not have consensus to request publication for =
this document and there are a couple of issues which need to be addressed: =
</div>
<div><font face=3D"Times New Roman" size=3D"3"><span style=3D"font-size:12p=
t">=C2=A0</span></font></div>
<ul style=3D"margin:0;padding-left:36pt">
<li>We have strong technical comments that need to be resolved, the working=
 group chairs would like to encourage the authors and Carlos to work togeth=
er to see if it possible to resolve the technical issues. From our understa=
nding this work is already in progress.
</li><li>Carlos has also pointed out a procedural issue, the document shoul=
d have been brought to the attention of the bfd WG. We&#39;ll make sure tha=
t this happens if and when a version that resolve the technical issue menti=
oned above is posted.</li></ul>
<div><font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt">=C2=
=A0</span></font></div>
<div>The earlier IPR issues seems to be resolved.</div>
<div>=C2=A0</div>
<div>Best regards</div>
<div>=C2=A0</div>
<div>Nic</div>
<div><font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt">=C2=
=A0</span></font></div>
<div><font face=3D"Times New Roman" size=3D"3"><span style=3D"font-size:12p=
t">=C2=A0</span></font></div>
<div><font face=3D"Times New Roman" size=3D"3"><span style=3D"font-size:12p=
t">=C2=A0</span></font></div>
</span></font>
</div>

</blockquote></div><br></div>

--001a113cd192513e3d0551db4ec1--


From nobody Thu Jun 15 08:29:09 2017
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From: "Susan Hares" <shares@ndzh.com>
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MPLS WG and chairs: 

 

The IDR WG has reached consensus on publication of
draft-ietf-idr-bgp-prefix-sid-05.txt.   In my duties as shepherd, I noticed
that we had not cross-reviewed this with the MPLS WG.   This email requests
feedback from the MPLS working on draft-ietf-idr-bgp-prefix-sid-05.txt
during the period 6/15 to 6/21.  

 

Thank you, 

Sue Hares 


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vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>MPLS WG =
and chairs: <o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>The IDR WG has reached consensus on publication of =
draft-ietf-idr-bgp-prefix-sid-05.txt.&nbsp;&nbsp; In my duties as =
shepherd, I noticed that we had not cross-reviewed this with the MPLS =
WG.&nbsp;&nbsp; This email requests feedback from the MPLS working on =
draft-ietf-idr-bgp-prefix-sid-05.txt during the period 6/15 to =
6/21.&nbsp; <o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Thank you, <o:p></o:p></p><p class=3DMsoNormal>Sue =
Hares <o:p></o:p></p></div></body></html>
------=_NextPart_000_016F_01D2E5C9.C8D33DC0--


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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

nits regarding use of normative language:

1) sec 2.2.: „Therefore, if
   the intersection of the sets of received and sent TA-Id is null, then
   LSR MUST send 'Session Rejected/Targeted Application Capability Mis-
   Match' Notification message to the initiating LSR and close the
   session.“
Probably no need to make this normative MUST again in the example text
-> s/MUST send/sends/

2) Similar the use of normative language in the use case section (5) does not
seem to be appropriate, or at least not consistent. Maybe just convert all
upper cases MAYs to lower case in that section.



From nobody Sun Jun 18 13:58:23 2017
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

I have a small list of issues that I think you should look at:

LSR -- needs expansion in the Abstract, as it is not an abbreviation recognized
by RFC Editor.

In 2.2

  If the receiver LSR does not receive the TAC TLV in the Initialization message
  or it does not understand   the TAC TLV, the TAC negotiation MUST be
  considered unsuccessful and the session establishment MUST proceed as per
  [RFC5036].

Firstly, you can't have requirements on any implementation that doesn't support
this specification. Secondly, the last MUST is already the default. So I think
use of RFC 2119 lange here is not appropriate, you should just use "is
considered" and "proceeds".

The following text:

If it sets the session setup retry interval to maximum, the session MAY stay in
a non-existent state. When this LSR detects a change in the responding LSR
configuration or its own configuration pertaining to TAC TLV, it MUST clear the
session setup back off delay associated with the session in order to re-attempt
the session establishment.

is repeated twice in the same section.

What is "TAI"?

In 5.2: the section is titled "Use Cases", so I didn't expect any normative RFC
2119 language in there. Some MAY seem not to be specifying implementation
choices, so they should be "may".



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----------------------------------------------------------------------
DISCUSS:
----------------------------------------------------------------------

This should be easy to fix, but needs to be fixed before the draft progresses:

Section 7 establishes a new IANA registry under the Label Distribution Protocol
(LDP) Parameters page. Unless I missed something (which happens) it doesn't
specify the registration policy as required by BCP26. Please see RFC 5226
section 4.1 for details.


----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

-General:  When you use the word "application", is a person skilled in MPLS
automatically going to think in terms of the sort of "applications" listed
here? If not, it would be good to have a paragraph early in the introduction
that describes what you mean by "applications". As an application-layer person,
I tend to think of it in terms of application-layer applications. Am I correct
to assume that it would not make sense to register, for example, HTTP in the
the LDP Targeted Application Identifier registry?

- 1.1: I noticed a number instances of at least "may" in lower case. If your
intent is that lower case words not be treated as keywords, please consider
using the new boilerplate from RFC 8174

Nits:

-1, first paragraph: "LDP uses extended discovery mechanism..."
Missing article before "discovery".

-2.2, paragraph 4 and 5, "... a maximum value, as 0xffff.": should "as" be
"such as"?

-2.2, paragraphs 6 and 7: the "it" in the opening sentence of each paragraph
has an unclear antecedent.



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--001a113d2ecc916e5405525c95be
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Dear All,
I think this new draft may be of interest. Looking forward to your
comments, questions.

Regards,
Greg

---------- Forwarded message ----------
From: <internet-drafts@ietf.org>
Date: Mon, Jun 19, 2017 at 6:42 PM
Subject: New Version Notification for draft-mirsky-bfd-mpls-demand-00.txt
To: Gregory Mirsky <gregimirsky@gmail.com>



A new version of I-D, draft-mirsky-bfd-mpls-demand-00.txt
has been successfully submitted by Greg Mirsky and posted to the
IETF repository.

Name:           draft-mirsky-bfd-mpls-demand
Revision:       00
Title:          BFD in Demand Mode over Point-to-Point MPLS LSP
Document date:  2017-06-19
Group:          Individual Submission
Pages:          5
URL:            https://www.ietf.org/internet-drafts/draft-mirsky-bfd-mpls-
demand-00.txt
Status:         https://datatracker.ietf.org/doc/draft-mirsky-bfd-mpls-
demand/
Htmlized:       https://tools.ietf.org/html/draft-mirsky-bfd-mpls-demand-00
Htmlized:       https://datatracker.ietf.org/doc/html/draft-mirsky-bfd-
mpls-demand-00


Abstract:
   This document describes procedures for using Bidirectional Forwarding
   Detection (BFD) in Demand mode to detect data plane failures in
   Multiprotocol Label Switching (MPLS) point-to-point Label Switched
   Paths.




Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

The IETF Secretariat

--001a113d2ecc916e5405525c95be
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<div dir=3D"ltr">Dear All,<div>I think this new draft may be of interest. L=
ooking forward to your comments, questions.</div><div><br></div><div>Regard=
s,</div><div>Greg</div><div><br><div class=3D"gmail_quote">---------- Forwa=
rded message ----------<br>From: <b class=3D"gmail_sendername"></b> <span d=
ir=3D"ltr">&lt;<a href=3D"mailto:internet-drafts@ietf.org">internet-drafts@=
ietf.org</a>&gt;</span><br>Date: Mon, Jun 19, 2017 at 6:42 PM<br>Subject: N=
ew Version Notification for draft-mirsky-bfd-mpls-demand-00.txt<br>To: Greg=
ory Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com">gregimirsky@gmail.c=
om</a>&gt;<br><br><br><br>
A new version of I-D, draft-mirsky-bfd-mpls-demand-<wbr>00.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-mirsky-bfd-mpls-demand<=
br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A000<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 BFD in Demand Mode over Point-to-P=
oint MPLS LSP<br>
Document date:=C2=A0 2017-06-19<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Individual Submission<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 5<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-mirsky-bfd-mpls-demand-00.txt" rel=3D"noreferrer" =
target=3D"_blank">https://www.ietf.org/internet-<wbr>drafts/draft-mirsky-bf=
d-mpls-<wbr>demand-00.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-mirsky-bfd-mpls-demand/" rel=3D"noreferrer" target=3D"_blan=
k">https://datatracker.ietf.org/<wbr>doc/draft-mirsky-bfd-mpls-<wbr>demand/=
</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-mirsky-bfd-mpls-demand-00" rel=3D"noreferrer" target=3D"_blank">https=
://tools.ietf.org/html/<wbr>draft-mirsky-bfd-mpls-demand-<wbr>00</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-mirsky-bfd-mpls-demand-00" rel=3D"noreferrer" target=3D"_bl=
ank">https://datatracker.ietf.org/<wbr>doc/html/draft-mirsky-bfd-<wbr>mpls-=
demand-00</a><br>
<br>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes procedures for using Bidirectional For=
warding<br>
=C2=A0 =C2=A0Detection (BFD) in Demand mode to detect data plane failures i=
n<br>
=C2=A0 =C2=A0Multiprotocol Label Switching (MPLS) point-to-point Label Swit=
ched<br>
=C2=A0 =C2=A0Paths.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
</div><br></div></div>

--001a113d2ecc916e5405525c95be--


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From: Jeffrey Haas <jhaas@pfrc.org>
To: Xufeng Liu <Xufeng_Liu@jabil.com>
Cc: Greg Mirsky <gregimirsky@gmail.com>, "draft-ietf-mpls-static-yang@ietf.org" <draft-ietf-mpls-static-yang@ietf.org>,  "mpls@ietf.org" <mpls@ietf.org>, "draft-ietf-rtgwg-routing-types@ietf.org" <draft-ietf-rtgwg-routing-types@ietf.org>,  "rtgwg@ietf.org" <rtgwg@ietf.org>
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References: <CA+RyBmVH=KCi3T8u2dB_WaKBOLheYwT4q0d+tpYdT-Z2iTZ+og@mail.gmail.com> <D55B6659.B21B8%acee@cisco.com> <CA+RyBmVyHKGhxitGgQ6RRMmHKwvs=b_GkKMq80rE=Ys8WetGaQ@mail.gmail.com> <BN3PR0201MB08676A90584EC7E8414244B3F1CB0@BN3PR0201MB0867.namprd02.prod.outlook.com> <CA+RyBmWHvfXt_Vdhc5w70ugQTSS5qffTWbQ+Lb9D_6PpfP10QQ@mail.gmail.com> <BN3PR0201MB0867AA3D4476A1DD25B3FC88F1CB0@BN3PR0201MB0867.namprd02.prod.outlook.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/vE0JdEcibbbC4o807dg9JY-2TGc>
Subject: Re: [mpls] MPLS label and LSE data models
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Xufeng,

On Tue, Jun 06, 2017 at 07:33:05PM +0000, Xufeng Liu wrote:
> From: Greg Mirsky [mailto:gregimirsky@gmail.com]
>   *   yes, grouping mpls-label-stack covers LSE though I cannot see why it needs id, sequence identifier. I'd expect the label stack already be properly ordered;
> [Xufeng] There are two ways to achieve the ordering: 1) Explicit sequence id, 2) Implicit order of the list items. Personally I feel that the explicit way is more clear and easier to use, but have no strong objection to the implicit way.

While I found the semantics of mpls-label-stack[id] to be clear, it does
have the peculiar property that the ids present in the list may have
gaps.  E.g. 10,20,30 instead of 1,2,3.  And also the ambiguity of whether
people's implementations starting counting at 0 or 1.

I'm not conversant with common Yang tool suites, but it seems if the
ordered-by user rather than the default of system, then the tooling might
present the bottom of stack entry as the first or last node of the list
rather than requiring the consumer to have to run a sort of the nodes based
on the id number and then select the first node.

-- Jeff


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From: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>
Date: Tue, 20 Jun 2017 16:12:29 -0500
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Subject: Re: [mpls] Spencer Dawkins' Discuss on draft-ietf-mpls-tp-shared-ring-protection-05: (with DISCUSS and COMMENT)
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Jimmy has asked whether -06 works for me. The easiest way for me to reply
to that, is from my original ballot, but I'm looking at Huub's e-mails in
this thread. So, see below.

On Wed, May 24, 2017 at 3:10 PM, Spencer Dawkins <
spencerdawkins.ietf@gmail.com> wrote:

> Spencer Dawkins has entered the following ballot position for
> draft-ietf-mpls-tp-shared-ring-protection-05: Discuss
>
> When responding, please keep the subject line intact and reply to all
> email addresses included in the To and CC lines. (Feel free to cut this
> introductory paragraph, however.)
>
>
> Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
> for more information about IESG DISCUSS and COMMENT positions.
>
>
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-mpls-tp-shared-
> ring-protection/
>
>
>
> ----------------------------------------------------------------------
> DISCUSS:
> ----------------------------------------------------------------------
>
> I want to thank the authors for a very readable draft. It was a pleasure
> to review, and that's a high bar for the subject.
>
> I have loads of questions, but my first set of questions is an expansion
> of Alvaro's comment that I think rises to the level of a Discuss. Please
> note that I'm asking questions, not proposing text changes, so I really
> do want to discuss it.
>
> ---------- my first set of questions
>
> In this text,
>
>    Three typical ring protection mechanisms are described in this
>    section: wrapping, short wrapping and steering.  All nodes on the
>    same ring MUST use the same protection mechanism.
>
> I would like to understand what happens if they aren't - and I'm asking,
> mostly as a way of encouraging guidance for operators in debugging cases
> where they're not all using the same mechanism. I'm not asking for a full
> mesh of possible misconfigurations, only for a sentence or two ("If they
> aren't all using the same protection mechanism, the following things may
> happen").
>

Huub's additional text worked for me here.


> More broadly, I'd like to understand why wrapping and short wrapping are
> both defined. It seems like the only functional difference is that short
> wrapping doesn't give you as much latency. Is that right?
>
> 24 pages in, I see this:
>
>    o  In rings utilizing the wrapping protection, each node detects the
>       failure or receives the RPS request as the destination node MUST
>       perform the switch from/to the working ring tunnels to/from the
>       protection ring tunnels if it has no higher priority active RPS
>       request.
>
>    o  In rings utilizing the short wrapping protection, each node
>       detects the failure or receives the RPS request as the
> destination
>       node MUST perform the switch only from the working ring tunnels
> to
>       the protection ring tunnels.
>
> so I'm pretty sure there are differences beyond what I was seeing,
> earlier in the document.
>

I think Huub's proposed text addressed this.


>
> And, of course, I'm not sure what the effect of choosing steering over
> wrapping/short wrapping would be, for my users, but that can wait until
> we talk about wrapping and short wrapping ...
>

And this.


>
> At a minimum, I'd like to see guidance for operators in choosing among
> the three protection mechanisms. Why would they choose any one of the
> three?
>

Section 7 is what I was hoping for. It's likely that a forward pointer to
this section, early in the document, would be helpful for your readers. Do
the right thing.


>
> I also note that this MUST seems to be repeated using different words in
> section 5.1, as
>
>    All nodes in the same ring MUST use the same protection mechanism,
>    Wrapping, steering or short-wrapping.
>
> If that's saying the same thing, one MUST is all you need.
>

So, that went away.

SO I CAN CLEAR MY DISCUSS ... but just to check on my comments :-)


>
>
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>
> ---------- all the other questions
>
> In this text,
>
>    When the service LSP passes through the interconnected rings, the
>    direction of the working ring tunnels used on both rings SHOULD be
>    the same.  For example, if the service LSP uses the clockwise
> working
>    ring tunnel on Ring1, when the service LSP leaves Ring1 and enters
>    Ring2, the working ring tunnel used on Ring2 SHOULD also follow the
>    clockwise direction.
>
> I'm not understanding why this is a SHOULD, and not a MUST. If the
> direction of the working ring tunnels used on both rings is not the same,
> does this still work?
>
> If it still works, why does this matter? But, either way, you might
> usefully say something about why this isn't always the right thing to do,
> even if you just give one example. The point of SHOULD is that
> implementers make their own informed decisions, so providing information
> that will inform those decisions seems important.
>

Huub's additional text was very helpful in explaining what's going on here.


>
> I wanted to call out
>
>    Ring switches MUST be preempted by higher priority RPS requests.
> For
>    example, consider a protection switch that is active due to a manual
>    switch request on the given link, and another protection switch is
>    required due to a failure on another link.  Then an RPS request MUST
>    be generated, the former protection switch MUST be dropped, and the
>    latter protection switch established.
>
>    MSRP mechanism SHOULD support multiple protection switches in the
>    ring, resulting in the ring being segmented into two or more
> separate
>    segments.  This may happen when several RPS requests of the same
>    priority exist in the ring due to multiple failures or external
>    switch commands.
>
> as really good examples of the kind of text I think would help the places
> in this document ("For example", "This may happen when") where no
> examples are given. Thanks for providing those examples!
>
> Ouch. Do I understand from
>
>    o  Protection Switching Mode (M): This 2-bit field indicates the
>       protection switching mode used by the sending node of the RPS
>       message.  This can be used to check that the ring nodes on the
>       same ring use the same protection switching mechanism.  The
>       defined values of the M field are listed as below:
>
>              +------------------+-----------------------------+
>              |  Bits (MSB-LSB)  |   Protecton Switching Mode  |
>              +------------------+-----------------------------+
>              |       0 0        |         Reserved            |
>              |       0 1        |         Wrapping            |
>              |       1 0        |       Short Wrapping        |
>              |       1 1        |         Steering            |
>              +------------------+-----------------------------+
>
> that you already have three protection mechanisms, and have only one
> possible codepoint to allocate for any future optimizations? Assuming
> that "0 0" can be unReserved ...
>

Huub's explanation helped me with this one.


>
> Could you clarify what "anyway" means in this text?
>
>    When multiple MS RPS requests exist at the same time addressing
>    different links and there is no higher priority request on the ring,
>    no switch SHOULD be executed and existing switches MUST be dropped.
>    The nodes MUST signal, anyway, the MS RPS request code.
>

Thanks for this one.


>
> I'm seeing that the commands like LP described in section 5.2.1.1  are
> used in the document before these (I'm serious) helpful and clear
> explanations appear. If it's possible to move section 5.2.1.1 up in the
> document, that would be great, but if it isn't possible, a forward
> pointer would be helpful to readers who don't already know what the
> command abbreviations mean.
>

Thanks for the forward pointer.


>
> I'm really confused by this SHOULD:
>
>    The PSC protocol [RFC6378] is designed for point-to-point LSPs, on
>    which the protection switching can only be performed on one or both
>    of the end points of the LSP.  The RPS protocol is designed for ring
>    tunnels, which consist of multiple ring nodes, and the failure could
>    happen on any segment of the ring, thus RPS SHOULD be capable of
>    identifying and handling the different failures on the ring, and
>    coordinating the protection switching behavior of all the nodes on
>    the ring.
>
> I suspect that's because it's not a 2119 SHOULD, but if people think it
> is, I wouldn't mind understanding why.
>

Thanks for fixing this.


>
> Section 5.3, "RPS and PSC Comparison on Ring Topology" is really helpful,
> but it appears 43 pages in. Given that I'd expect people to be asking why
> they should implement a new protection switching protocol when they've
> already implemented PSC, I'd think this would be much more useful, early
> in the document.
>

There's more text, and it looks helpful, but I still think it would be more
useful, much earlier in the document. Do the right thing :-) ...


>
> I'm somewhat confused about the code point allocation strategy in this
> text:
>
>    The RPS Request Field is 8 bits, the allocated values are as
> follows:
>
>        Value       Description               Reference
>       -------  --------------------------- ---------------
>          0     No Request (NR)             this document
>          1     Reverse Request (RR)        this document
>          2     unassigned
>          3     Exercise (EXER)             this document
>          4     unassigned
>          5     Wait-To-Restore (WTR)       this document
>          6     Manual Switch (MS)          this document
>         7-10   unassigned
>         11     Signal Fail (SF)            this document
>         12     unassigned
>         13     Forced Switch (FS)          this document
>         14     unassigned
>         15     Lockout of Protection (LP)  this document
>       16-254   unassigned
>         255    Reserved
>
> My first question is, why the highest priority RPS value is 15, given
> that the field is 8 bits wide. If anyone ever needs to add a code point
> higher than the highest priority code point, will that work well? I can
> imagine code that says "if operation_priority is greater than
> highest_priority, it's an error", for example.
>
> I may have other questions depending on your answer, but let's start
> there.
>

Huub's explanation helped a lot.

So, I'll go clear now, and thanks for working through my Discuss.

Spencer

--94eb2c07c8a497b85a05526ab584
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Jimmy has asked whether -06 works for me. The easiest way =
for me to reply to that, is from my original ballot, but I&#39;m looking at=
 Huub&#39;s e-mails in this thread. So, see below.<br><div class=3D"gmail_e=
xtra"><br><div class=3D"gmail_quote">On Wed, May 24, 2017 at 3:10 PM, Spenc=
er Dawkins <span dir=3D"ltr">&lt;<a href=3D"mailto:spencerdawkins.ietf@gmai=
l.com" target=3D"_blank">spencerdawkins.ietf@gmail.com</a>&gt;</span> wrote=
:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-le=
ft:1px #ccc solid;padding-left:1ex">Spencer Dawkins has entered the followi=
ng ballot position for<br>
draft-ietf-mpls-tp-shared-<wbr>ring-protection-05: Discuss<br>
<br>
When responding, please keep the subject line intact and reply to all<br>
email addresses included in the To and CC lines. (Feel free to cut this<br>
introductory paragraph, however.)<br>
<br>
<br>
Please refer to <a href=3D"https://www.ietf.org/iesg/statement/discuss-crit=
eria.html" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/iesg/<=
wbr>statement/discuss-criteria.<wbr>html</a><br>
for more information about IESG DISCUSS and COMMENT positions.<br>
<br>
<br>
The document, along with other ballot positions, can be found here:<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-mpls-tp-shared-ring-=
protection/" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.=
org/<wbr>doc/draft-ietf-mpls-tp-shared-<wbr>ring-protection/</a><br>
<br>
<br>
<br>
------------------------------<wbr>------------------------------<wbr>-----=
-----<br>
DISCUSS:<br>
------------------------------<wbr>------------------------------<wbr>-----=
-----<br>
<br>
I want to thank the authors for a very readable draft. It was a pleasure<br=
>
to review, and that&#39;s a high bar for the subject.<br>
<br>
I have loads of questions, but my first set of questions is an expansion<br=
>
of Alvaro&#39;s comment that I think rises to the level of a Discuss. Pleas=
e<br>
note that I&#39;m asking questions, not proposing text changes, so I really=
<br>
do want to discuss it.<br>
<br>
---------- my first set of questions<br>
<br>
In this text,<br>
<br>
=C2=A0 =C2=A0Three typical ring protection mechanisms are described in this=
<br>
=C2=A0 =C2=A0section: wrapping, short wrapping and steering.=C2=A0 All node=
s on the<br>
=C2=A0 =C2=A0same ring MUST use the same protection mechanism.<br>
<br>
I would like to understand what happens if they aren&#39;t - and I&#39;m as=
king,<br>
mostly as a way of encouraging guidance for operators in debugging cases<br=
>
where they&#39;re not all using the same mechanism. I&#39;m not asking for =
a full<br>
mesh of possible misconfigurations, only for a sentence or two (&quot;If th=
ey<br>
aren&#39;t all using the same protection mechanism, the following things ma=
y<br>
happen&quot;).<br></blockquote><div><br></div><div>Huub&#39;s additional te=
xt worked for me here.</div><div>=C2=A0</div><blockquote class=3D"gmail_quo=
te" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"=
>More broadly, I&#39;d like to understand why wrapping and short wrapping a=
re<br>
both defined. It seems like the only functional difference is that short<br=
>
wrapping doesn&#39;t give you as much latency. Is that right?<br>
<br>
24 pages in, I see this:<br>
<br>
=C2=A0 =C2=A0o=C2=A0 In rings utilizing the wrapping protection, each node =
detects the<br>
=C2=A0 =C2=A0 =C2=A0 failure or receives the RPS request as the destination=
 node MUST<br>
=C2=A0 =C2=A0 =C2=A0 perform the switch from/to the working ring tunnels to=
/from the<br>
=C2=A0 =C2=A0 =C2=A0 protection ring tunnels if it has no higher priority a=
ctive RPS<br>
=C2=A0 =C2=A0 =C2=A0 request.<br>
<br>
=C2=A0 =C2=A0o=C2=A0 In rings utilizing the short wrapping protection, each=
 node<br>
=C2=A0 =C2=A0 =C2=A0 detects the failure or receives the RPS request as the=
<br>
destination<br>
=C2=A0 =C2=A0 =C2=A0 node MUST perform the switch only from the working rin=
g tunnels<br>
to<br>
=C2=A0 =C2=A0 =C2=A0 the protection ring tunnels.<br>
<br>
so I&#39;m pretty sure there are differences beyond what I was seeing,<br>
earlier in the document.<br></blockquote><div><br></div><div>I think Huub&#=
39;s proposed text addressed this.</div><div>=C2=A0</div><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">
<br>
And, of course, I&#39;m not sure what the effect of choosing steering over<=
br>
wrapping/short wrapping would be, for my users, but that can wait until<br>
we talk about wrapping and short wrapping ...<br></blockquote><div><br></di=
v><div>And this.</div><div>=C2=A0</div><blockquote class=3D"gmail_quote" st=
yle=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
At a minimum, I&#39;d like to see guidance for operators in choosing among<=
br>
the three protection mechanisms. Why would they choose any one of the<br>
three?<br></blockquote><div><br></div><div>Section 7 is what I was hoping f=
or. It&#39;s likely that a forward pointer to this section, early in the do=
cument, would be helpful for your readers. Do the right thing.</div><div>=
=C2=A0</div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bo=
rder-left:1px #ccc solid;padding-left:1ex">
<br>
I also note that this MUST seems to be repeated using different words in<br=
>
section 5.1, as<br>
<br>
=C2=A0 =C2=A0All nodes in the same ring MUST use the same protection mechan=
ism,<br>
=C2=A0 =C2=A0Wrapping, steering or short-wrapping.<br>
<br>
If that&#39;s saying the same thing, one MUST is all you need.<br></blockqu=
ote><div><br></div><div>So, that went away. <br><br>SO I CAN CLEAR MY DISCU=
SS ... but just to check on my comments :-)</div><div>=C2=A0</div><blockquo=
te class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc so=
lid;padding-left:1ex">
<br>
<br>
------------------------------<wbr>------------------------------<wbr>-----=
-----<br>
COMMENT:<br>
------------------------------<wbr>------------------------------<wbr>-----=
-----<br>
<br>
---------- all the other questions<br>
<br>
In this text,<br>
<br>
=C2=A0 =C2=A0When the service LSP passes through the interconnected rings, =
the<br>
=C2=A0 =C2=A0direction of the working ring tunnels used on both rings SHOUL=
D be<br>
=C2=A0 =C2=A0the same.=C2=A0 For example, if the service LSP uses the clock=
wise<br>
working<br>
=C2=A0 =C2=A0ring tunnel on Ring1, when the service LSP leaves Ring1 and en=
ters<br>
=C2=A0 =C2=A0Ring2, the working ring tunnel used on Ring2 SHOULD also follo=
w the<br>
=C2=A0 =C2=A0clockwise direction.<br>
<br>
I&#39;m not understanding why this is a SHOULD, and not a MUST. If the<br>
direction of the working ring tunnels used on both rings is not the same,<b=
r>
does this still work?<br>
<br>
If it still works, why does this matter? But, either way, you might<br>
usefully say something about why this isn&#39;t always the right thing to d=
o,<br>
even if you just give one example. The point of SHOULD is that<br>
implementers make their own informed decisions, so providing information<br=
>
that will inform those decisions seems important.<br></blockquote><div><br>=
</div><div>Huub&#39;s additional text was very helpful in explaining what&#=
39;s going on here.</div><div>=C2=A0</div><blockquote class=3D"gmail_quote"=
 style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
I wanted to call out<br>
<br>
=C2=A0 =C2=A0Ring switches MUST be preempted by higher priority RPS request=
s.<br>
For<br>
=C2=A0 =C2=A0example, consider a protection switch that is active due to a =
manual<br>
=C2=A0 =C2=A0switch request on the given link, and another protection switc=
h is<br>
=C2=A0 =C2=A0required due to a failure on another link.=C2=A0 Then an RPS r=
equest MUST<br>
=C2=A0 =C2=A0be generated, the former protection switch MUST be dropped, an=
d the<br>
=C2=A0 =C2=A0latter protection switch established.<br>
<br>
=C2=A0 =C2=A0MSRP mechanism SHOULD support multiple protection switches in =
the<br>
=C2=A0 =C2=A0ring, resulting in the ring being segmented into two or more<b=
r>
separate<br>
=C2=A0 =C2=A0segments.=C2=A0 This may happen when several RPS requests of t=
he same<br>
=C2=A0 =C2=A0priority exist in the ring due to multiple failures or externa=
l<br>
=C2=A0 =C2=A0switch commands.<br>
<br>
as really good examples of the kind of text I think would help the places<b=
r>
in this document (&quot;For example&quot;, &quot;This may happen when&quot;=
) where no<br>
examples are given. Thanks for providing those examples!<br>
<br>
Ouch. Do I understand from<br>
<br>
=C2=A0 =C2=A0o=C2=A0 Protection Switching Mode (M): This 2-bit field indica=
tes the<br>
=C2=A0 =C2=A0 =C2=A0 protection switching mode used by the sending node of =
the RPS<br>
=C2=A0 =C2=A0 =C2=A0 message.=C2=A0 This can be used to check that the ring=
 nodes on the<br>
=C2=A0 =C2=A0 =C2=A0 same ring use the same protection switching mechanism.=
=C2=A0 The<br>
=C2=A0 =C2=A0 =C2=A0 defined values of the M field are listed as below:<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+------------------+-------=
---<wbr>-------------------+<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=A0 Bits (MSB-LSB)=C2=
=A0 |=C2=A0 =C2=A0Protecton Switching Mode=C2=A0 |<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+------------------+-------=
---<wbr>-------------------+<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=A0 =C2=A0 =C2=A0 =C2=
=A00 0=C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Reserv=
ed=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=A0 =C2=A0 =C2=A0 =C2=
=A00 1=C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Wrappi=
ng=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=A0 =C2=A0 =C2=A0 =C2=
=A01 0=C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=A0Short Wrappin=
g=C2=A0 =C2=A0 =C2=A0 =C2=A0 |<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0|=C2=A0 =C2=A0 =C2=A0 =C2=
=A01 1=C2=A0 =C2=A0 =C2=A0 =C2=A0 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Steeri=
ng=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 |<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0+------------------+-------=
---<wbr>-------------------+<br>
<br>
that you already have three protection mechanisms, and have only one<br>
possible codepoint to allocate for any future optimizations? Assuming<br>
that &quot;0 0&quot; can be unReserved ...<br></blockquote><div><br></div><=
div>Huub&#39;s explanation helped me with this one.</div><div>=C2=A0</div><=
blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px=
 #ccc solid;padding-left:1ex">
<br>
Could you clarify what &quot;anyway&quot; means in this text?<br>
<br>
=C2=A0 =C2=A0When multiple MS RPS requests exist at the same time addressin=
g<br>
=C2=A0 =C2=A0different links and there is no higher priority request on the=
 ring,<br>
=C2=A0 =C2=A0no switch SHOULD be executed and existing switches MUST be dro=
pped.<br>
=C2=A0 =C2=A0The nodes MUST signal, anyway, the MS RPS request code.<br></b=
lockquote><div><br></div><div>Thanks for this one.</div><div>=C2=A0</div><b=
lockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px =
#ccc solid;padding-left:1ex">
<br>
I&#39;m seeing that the commands like LP described in section 5.2.1.1=C2=A0=
 are<br>
used in the document before these (I&#39;m serious) helpful and clear<br>
explanations appear. If it&#39;s possible to move section 5.2.1.1 up in the=
<br>
document, that would be great, but if it isn&#39;t possible, a forward<br>
pointer would be helpful to readers who don&#39;t already know what the<br>
command abbreviations mean.<br></blockquote><div><br></div><div>Thanks for =
the forward pointer.</div><div>=C2=A0</div><blockquote class=3D"gmail_quote=
" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
I&#39;m really confused by this SHOULD:<br>
<br>
=C2=A0 =C2=A0The PSC protocol [RFC6378] is designed for point-to-point LSPs=
, on<br>
=C2=A0 =C2=A0which the protection switching can only be performed on one or=
 both<br>
=C2=A0 =C2=A0of the end points of the LSP.=C2=A0 The RPS protocol is design=
ed for ring<br>
=C2=A0 =C2=A0tunnels, which consist of multiple ring nodes, and the failure=
 could<br>
=C2=A0 =C2=A0happen on any segment of the ring, thus RPS SHOULD be capable =
of<br>
=C2=A0 =C2=A0identifying and handling the different failures on the ring, a=
nd<br>
=C2=A0 =C2=A0coordinating the protection switching behavior of all the node=
s on<br>
=C2=A0 =C2=A0the ring.<br>
<br>
I suspect that&#39;s because it&#39;s not a 2119 SHOULD, but if people thin=
k it<br>
is, I wouldn&#39;t mind understanding why.<br></blockquote><div><br></div><=
div>Thanks for fixing this.</div><div>=C2=A0</div><blockquote class=3D"gmai=
l_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left=
:1ex">
<br>
Section 5.3, &quot;RPS and PSC Comparison on Ring Topology&quot; is really =
helpful,<br>
but it appears 43 pages in. Given that I&#39;d expect people to be asking w=
hy<br>
they should implement a new protection switching protocol when they&#39;ve<=
br>
already implemented PSC, I&#39;d think this would be much more useful, earl=
y<br>
in the document.<br></blockquote><div><br></div><div>There&#39;s more text,=
 and it looks helpful, but I still think it would be more useful, much earl=
ier in the document. Do the right thing :-) ...</div><div>=C2=A0</div><bloc=
kquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #cc=
c solid;padding-left:1ex">
<br>
I&#39;m somewhat confused about the code point allocation strategy in this<=
br>
text:<br>
<br>
=C2=A0 =C2=A0The RPS Request Field is 8 bits, the allocated values are as<b=
r>
follows:<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0Value=C2=A0 =C2=A0 =C2=A0 =C2=A0Description=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Reference<br>
=C2=A0 =C2=A0 =C2=A0 -------=C2=A0 --------------------------- ------------=
---<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A00=C2=A0 =C2=A0 =C2=A0No Request (NR)=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A01=C2=A0 =C2=A0 =C2=A0Reverse Request (RR)=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A02=C2=A0 =C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A03=C2=A0 =C2=A0 =C2=A0Exercise (EXER)=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A04=C2=A0 =C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A05=C2=A0 =C2=A0 =C2=A0Wait-To-Restore (WTR=
)=C2=A0 =C2=A0 =C2=A0 =C2=A0this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A06=C2=A0 =C2=A0 =C2=A0Manual Switch (MS)=
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 7-10=C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 11=C2=A0 =C2=A0 =C2=A0Signal Fail (SF)=C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 12=C2=A0 =C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 13=C2=A0 =C2=A0 =C2=A0Forced Switch (FS)=C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 this document<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 14=C2=A0 =C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 15=C2=A0 =C2=A0 =C2=A0Lockout of Protection (LP=
)=C2=A0 this document<br>
=C2=A0 =C2=A0 =C2=A0 16-254=C2=A0 =C2=A0unassigned<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 255=C2=A0 =C2=A0 Reserved<br>
<br>
My first question is, why the highest priority RPS value is 15, given<br>
that the field is 8 bits wide. If anyone ever needs to add a code point<br>
higher than the highest priority code point, will that work well? I can<br>
imagine code that says &quot;if operation_priority is greater than<br>
highest_priority, it&#39;s an error&quot;, for example.<br>
<br>
I may have other questions depending on your answer, but let&#39;s start<br=
>
there.<br></blockquote><div><br></div><div>Huub&#39;s explanation helped a =
lot.</div><div><br></div><div>So, I&#39;ll go clear now, and thanks for wor=
king through my Discuss.</div><div><br></div><div>Spencer=C2=A0</div></div>=
</div></div>

--94eb2c07c8a497b85a05526ab584--


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Cc: draft-ietf-mpls-tp-shared-ring-protection@ietf.org, Eric Gray <Eric.Gray@Ericsson.com>, mpls-chairs@ietf.org, Eric.Gray@Ericsson.com, mpls@ietf.org
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Subject: [mpls] Spencer Dawkins' No Objection on draft-ietf-mpls-tp-shared-ring-protection-06: (with COMMENT)
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Spencer Dawkins has entered the following ballot position for
draft-ietf-mpls-tp-shared-ring-protection-06: No Objection

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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

Thanks for working through my Discuss.



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Subject: [mpls] Fwd: NomCom 2017-2018 Third and FINAL Call for Volunteers
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Working Group,

FYI

If you are eligible and cycles to do it, please volunteer.

/Loa
mpls wg co-chair


-------- Forwarded Message --------
Subject: NomCom 2017-2018 Third and FINAL Call for Volunteers
Date: Mon, 19 Jun 2017 09:12:00 -0700
From: NomCom Chair 2017 <nomcom-chair-2017@ietf.org>
Reply-To: ietf@ietf.org
To: IETF Announcement List <ietf-announce@ietf.org>
CC: ietf@ietf.org

The IETF NomCom appoints folks to fill the open slots on the IAOC, the 
IAB, and the IESG.

Ten voting members for the NomCom are selected in a verifiably random 
way from a pool of volunteers. The more volunteers, the better chance we 
have of choosing a random yet representative cross section of the IETF 
population.

The details of the operation of the NomCom can be found in RFC 7437 (BCP 
10), and RFC 3797 details the selection algorithm.

Volunteers must have attended 3 of the past 5 IETF meetings.  As 
specified in RFC 7437, that means three out of the five past meetings up 
to the time this email announcement goes out to start the solicitation 
of volunteers. The five meetings out of which you must have attended 
*three* are:

IETF = 94 (Yokohama)      \
        95 (Buenos Aires)   \
        96 (Berlin)          -*** ANY THREE!
        97 (Seoul)          /
        98 (Chicago)       /

You can check your eligibility at: 
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If you qualify, please volunteer. Before you decide to volunteer, please 
remember that anyone appointed to this NomCom will not be considered as 
a candidate for any of the positions that the 2017 - 2018 NomCom is 
responsible for filling.

Some 201 people have already volunteered by ticking the box on the IETF 
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shortly. Thank you for volunteering!

The list of people and posts whose terms end with the March 2018 IETF 
meeting, and thus the positions for which this NomCom is responsible, are

IAOC:

     Leslie Daigle

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     Joe Hildebrand
     Lee Howard
     Erik Nordmark
     Martin Thomson
     Brian Trammell

IESG:

     Alia Atlas (RTG)
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All appointments are for 2 years. The ART and Routing areas have 3 ADs 
and the General area has 1; all other areas have 2 ADs.  Thus, all areas 
have at least one continuing AD.

The primary activity for this NomCom will begin in July 2017 and should 
be completed in January 2018.  The NomCom will have regularly scheduled 
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requirements from the community, review candidate questionnaires, review 
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While being a NomCom member does require some time commitment it is also 
a very rewarding experience.

As a member of the NomCom it is very important that you be able to 
attend IETF 100 (Singapore) to conduct interviews.  Being at IETF 99 
(Prague) is useful for orientation.  Being at IETF 101 (London) is not 
essential.

Please volunteer by sending me an email before 23:59 UTC June 26, 2017, 
as follows:

To: nomcom-chair-2017 at ietf dot org
Subject: NomCom 2017-18 Volunteer

Please include the following information in the email body:

Your Full Name: __________
     // as you write it on the IETF registration form

Current Primary Affiliation:
     // Typically what goes in the Company field
     // in the IETF Registration Form

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    // Preferred email address first

Telephone: _______________________
     // For confirmation if selected

You should expect an email response from me within 5 business days 
stating whether or not you are qualified.  If you don't receive this 
response, please re-send your email with the tag "RESEND"" added to the 
subject line.

If you are not yet sure if you would like to volunteer, please consider 
that NomCom members play a very important role in shaping the leadership 
of the IETF.  Questions by email or voice are welcome. Volunteering for 
the NomCom is a great way to contribute to the IETF!

You can find a detailed timeline on the NomCom web site at:
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I will be publishing a more detailed target timetable, as well as 
details of the randomness seeds to be used for the RFC 3797 selection 
process, within short order.

Thank you!

Peter Yee
peter at akayla dot com
nomcom-chair-2017 at ietf dot org


-- 


Loa Andersson                        email: loa@mail01.huawei.com
Senior MPLS Expert                          loa@pi.nu
Huawei Technologies (consultant)     phone: +46 739 81 21 64


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The call for proposals of the MPLS + SDN + NFV World Congress 2018 is
online. 

 

Main items: ONAP/CORD reports, uCPE/SD-WAN, EVPN, VNF, automation, network
slicing. 

Deadline for turning in abstracts is July 15th. 

 

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http://www.uppersideconferences.com/mpls-sdn-nfv/mplswc2018_cfp.html

 

 

 


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+ SDN + NFV World Congress 2018 is online.&nbsp;<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US><o:p>&nbsp;</o:p></span></p><p =
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items: ONAP/CORD reports, uCPE/SD-WAN, EVPN, VNF, automation, network =
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15th.&nbsp;<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
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From nobody Wed Jun 21 08:59:06 2017
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COMMENT:
----------------------------------------------------------------------

1: Does this document really need 6 front page authors?

2: The shepherd writeup says: "We are aware of several intentions to implement
this secification. An implementation poll has been sent to the working group
and as further information is received, the write-up will be updated." -- was
any further info received?

3: The shepherd writeup also says: "There is one small issue that I'm currently
clearing with IANA." -- is this the value of the status code E bit? Or some
other issue?

Nits:
1: There are are a number of unexpanded acronyms -- e.g: LSP is no "well known"
- https://www.rfc-editor.org/materials/abbrev.expansion.txt

2: Sec 1  Introduction
"LDP uses extended discovery mechanism to establish..." - "LDP uses *the*
extended discovery mechanism" (or discovery *mechanisms*)

3: Sec 1  Introduction
 "An LSR initiates extended discovery... " - "A LSR..." ("An Label Switch"
 wouldn't make much sense)

4: Sec 1  Introduction
"In addition, since the session is initiated and established after adjacency
formation, the responding LSR has no targeted applications information to
choose the targeted application" - "has no targeted applications information
available to choose which targeted application".

5: Sec 1  Introduction
"Also, targeted LDP application is mapped .." - "Also, the targeted LDP
application is mapped"

6: Sec 1.2 Terminology
"This document uses terminology discussed in [RFC7473] along with others
defined in this document." feels clumsy. How about: "In addition to the
terminology defined in [RFC7473], this document uses the following terms: "

7: Sec 2.1 Encoding
"An LSR MAY advertise that it is capable to negotiate a targeted LDP ..." - "An
LSR MAY advertise that it is capable of negotiating a targeted LDP ..."



From nobody Wed Jun 21 13:42:23 2017
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COMMENT:
----------------------------------------------------------------------

Document: draft-ietf-mpls-app-aware-tldp-00.txt

   LDP can use the extended discovery mechanism to establish a tLDP
   adjacency and subsequent session as described in [RFC5036]. An LSR

Please expand LDP and tLDP on first use. Also, I don't see tLDP in
RFC 5037 despite the citation


S 2.1.
       A Targeted Applications Capability data consists of none, one
       or more 32 bit Targeted Application Elements. Its encoding is
       as follows:

This is ungrammatical. Is it intended to say "zero or more"?

S 2.2.
   If the receiver LSR does not receive the TAC in the Initialization
   message or it does not understand the TAC TLV, the TAC negotiation
   MUST be considered unsuccessful and the session establishment MUST
   proceed as per [RFC5036]. On the receipt of a valid TAC TLV, an LSR
   MUST generate its own TAC TLV with TAEs consisting of unique TA-Ids
   that it supports over the tLDP session. If there is at least one TAE
   common between the TAC TLV it has received and its own, the session
   MUST proceed to establishment as per [RFC5036]. If not, A LSR MUST
   send a 'Session Rejected/Targeted Application Capability Mis-Match'
   Notification message to the peer and close the session. The
   initiating LSR SHOULD tear down the corresponding tLDP adjacency
   after send or receipt of a 'Session Rejected/Targeted Application
   Capability Mis-Match' Notification message to or from the responding
   LSR respectively.

This seems like odd semantic: if I don't understand the TLV, I continue
with session establishment, but if I understand it but there's no overlap
I close the session?


   instance, suppose a initiating LSR advertises A, B and C as TA-Ids.
   Further, suppose the responding LSR advertises C, D and E as TA-Ids.
   Than the negotiated TA-Id, as per both the LSRs is C. In the second
   instance, suppose a initiating LSR advertises A, B and C as TA-Ids
   and the responding LSR, which acts as a passive LSR, advertises all
   the applications - A, B, C, D and E that it supports over this
   session. Than the negotiated targeted application as per both the

Should this say "applications"? It seems like you're just computing
intersection.

   If the Targeted Application Capability and Dynamic Capability, as
   described in [RFC5561], are negotiated during session initialization,
   TAC MAY be re-negotiated after session establishment by sending an
   updated TAC TLV in LDP Capability message. The updated TAC TLV
   carries TA-Ids with incremental update only. The updated TLV MUST
   consist of one or more TAEs with E-bit set or E-bit off to advertise
   or withdraw the new and old application respectively. This may lead
   to advertisements or withdrawals of certain types of FEC-Label
   bindings over the session or tear down of the tLDP adjacency and
   subsequently the session.

So, advertisements are cumulative? If I advertise A, B and then C,
that means I do A, B, C?



From nobody Wed Jun 21 16:06:09 2017
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

Please expand the following acronyms upon first use and in the title;
see https://www.rfc-editor.org/materials/abbrev.expansion.txt for guidance.

 - LSR - Label Switching Router
 - mLDP - Multipoint LDP
 - PQ - Unknown
 - TAI - Unknown
 - RSVP-TE - RSVP - Traffic Engineering
 - P2MP - Point-to-Multipoint
 - PW - pseudowire
 - P2P-PW - Peer-to-peer Psuedowire (presumably?)
 - MP2MP - Multipoint-to-Multipoint
 - HSMP - Unknown
 - LSP - Label Switched Path
 - MP2P - Unknown (should this be P2MP?)
 - MPT - Unknown



From nobody Wed Jun 21 19:27:40 2017
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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>, The IESG <iesg@ietf.org>
CC: "mpls@ietf.org" <mpls@ietf.org>, "draft-ietf-mpls-tp-shared-ring-protection@ietf.org" <draft-ietf-mpls-tp-shared-ring-protection@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, Eric Gray <Eric.Gray@ericsson.com>
Thread-Topic: Spencer Dawkins' Discuss on draft-ietf-mpls-tp-shared-ring-protection-05: (with DISCUSS and COMMENT)
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Date: Thu, 22 Jun 2017 02:27:08 +0000
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Subject: Re: [mpls] Spencer Dawkins' Discuss on draft-ietf-mpls-tp-shared-ring-protection-05: (with DISCUSS and COMMENT)
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--_000_76CD132C3ADEF848BD84D028D243C9279371154ENKGEML515MBXchi_--



From nobody Thu Jun 22 06:40:08 2017
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

Close to a DISCUSS, but in the end a COMMENT, assuming I don't know enough
about tLDP. Let's have a discussion regardless.

   This document
   defines a mechanism to advertise and negotiate Targeted Applications
   Capability (TAC) during LDP session initialization.

...
   This document proposes and describes a solution to advertise Targeted
   Application Capability (TAC), consisting of a targeted application
   list, during initialization of a tLDP session.

...
   An LSR MAY advertise that it is capable to negotiate a targeted LDP
   application list over a tLDP session by using the Capability
   Advertisement as defined in [RFC5561] and encoded as follows:

...
   At tLDP session establishment time, a LSR MAY include a new
   capability TLV, TAC TLV, as an optional TLV in the LDP Initialization
   message.

Reading the doc., I've been wondering for many pages now. Do we speak
negotation ... From the initiating LSR: these are the Targeted Application
(Identifier(s)) for which I would like to initializate a tLDP
        Answer from the responding LSR: yes, possible. No, not possible
        Question: is the tLDP session established.

>From the initiating LSR: from this list, tell me which Targeted Application
(Identifiers) you support
        Answer from the responding LSR: here are the Targeted Application
        (Identifiers) I support

>From the receiving LSR: here are the Targeted Application (Identifiers) I
support

Throughout the doc, clarify if the LSR is the initiating or receiving party.
As a starting point, this text should be updated:

       At tLDP session establishment time, a LSR MAY include a new
       capability TLV, TAC TLV, as an optional TLV in the LDP Initialization
       message.

LSR => initiating LSR.

Oh, wait, then I've been confused with: "If both the peers advertise TAC TLV,"
So both can start the negotiation?

Then you speak about "the responding LSR playing the active role in LDP session"
So it's not about initiating/responding LSR any longer.

A small diagram with arrows, at least for the most common case, would go a long
way.



From nobody Thu Jun 22 07:48:45 2017
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----------------------------------------------------------------------
COMMENT:
----------------------------------------------------------------------

(I cleared my discuss. Alexey pointed out that the registration policies for
unassigned ranges are explicitly mentioned in the table itself. Apologies, I
missed that.)

-General:  When you use the word "application", is a person skilled in MPLS
automatically going to think in terms of the sort of "applications" listed
here? If not, it would be good to have a paragraph early in the introduction
that describes what you mean by "applications". As an application-layer person,
I tend to think of it in terms of application-layer applications. Am I correct
to assume that it would not make sense to register, for example, HTTP in the
the LDP Targeted Application Identifier registry?

- 1.1: I noticed a number instances of at least "may" in lower case. If your
intent is that lower case words not be treated as keywords, please consider
using the new boilerplate from RFC 8174

Nits:

-1, first paragraph: "LDP uses extended discovery mechanism..."
Missing article before "discovery".

-2.2, paragraph 4 and 5, "... a maximum value, as 0xffff.": should "as" be
"such as"?

-2.2, paragraphs 6 and 7: the "it" in the opening sentence of each paragraph
has an unclear antecedent.



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From: Xufeng Liu <Xufeng_Liu@jabil.com>
To: Jeffrey Haas <jhaas@pfrc.org>
CC: Greg Mirsky <gregimirsky@gmail.com>, "draft-ietf-mpls-static-yang@ietf.org" <draft-ietf-mpls-static-yang@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>, "draft-ietf-rtgwg-routing-types@ietf.org" <draft-ietf-rtgwg-routing-types@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>
Thread-Topic: MPLS label and LSE data models
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/pIz6awYFw13iWzOWYPtmm6SLO94>
Subject: Re: [mpls] MPLS label and LSE data models
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Hi Jeff,

> -----Original Message-----
> From: Jeffrey Haas [mailto:jhaas@pfrc.org]
> Sent: Tuesday, June 20, 2017 4:50 PM
> To: Xufeng Liu <Xufeng_Liu@jabil.com>
> Cc: Greg Mirsky <gregimirsky@gmail.com>; draft-ietf-mpls-static-yang@ietf=
.org;
> mpls@ietf.org; draft-ietf-rtgwg-routing-types@ietf.org; rtgwg@ietf.org
> Subject: Re: MPLS label and LSE data models
>=20
> Xufeng,
>=20
> On Tue, Jun 06, 2017 at 07:33:05PM +0000, Xufeng Liu wrote:
> > From: Greg Mirsky [mailto:gregimirsky@gmail.com]
> >   *   yes, grouping mpls-label-stack covers LSE though I cannot see why=
 it needs
> id, sequence identifier. I'd expect the label stack already be properly o=
rdered;
> > [Xufeng] There are two ways to achieve the ordering: 1) Explicit sequen=
ce id, 2)
> Implicit order of the list items. Personally I feel that the explicit way=
 is more
> clear and easier to use, but have no strong objection to the implicit way=
.
>=20
> While I found the semantics of mpls-label-stack[id] to be clear, it does =
have the
> peculiar property that the ids present in the list may have gaps.  E.g. 1=
0,20,30
> instead of 1,2,3.  And also the ambiguity of whether people's implementat=
ions
> starting counting at 0 or 1.

[Xufeng] I understand the peculiarity of the ID gaps, but I don't have a go=
od way to eliminate it. It seems that YANG does not have a simple mechanism=
 to specify an ordered list items allowing duplicated items, so we'd need t=
o use the ID, but we cannot restrict the ID values to be consecutive easily=
. However, the implantation and the operator can ignore the gaps, and use t=
he ID values only for the ordering purpose. Therefore, it would not matter =
whether the implementation starts counting at 0 or 1, or any other number.

>=20
> I'm not conversant with common Yang tool suites, but it seems if the orde=
red-by
> user rather than the default of system, then the tooling might present th=
e
> bottom of stack entry as the first or last node of the list rather than r=
equiring the
> consumer to have to run a sort of the nodes based on the id number and th=
en
> select the first node.

[Xufeng] Are you suggesting to use the position to order instead of the ID =
value? If so, what would be the semantics of the ID value? If we cannot get=
 rid of the ID key, I don't know if using a separate ordering mechanism wil=
l make the usability better.

Thanks, Xufeng

>=20
> -- Jeff


From nobody Thu Jun 22 15:43:39 2017
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From: Santosh Esale <sesale@juniper.net>
To: Yoav Nir <ynir.ietf@gmail.com>, "secdir@ietf.org" <secdir@ietf.org>
CC: "mpls@ietf.org" <mpls@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>, "BRUNGARD, DEBORAH A" <db3546@att.com>, "draft-ietf-mpls-app-aware-tldp.all@ietf.org" <draft-ietf-mpls-app-aware-tldp.all@ietf.org>
Thread-Topic: Secdir last call review of draft-ietf-mpls-app-aware-tldp-08
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Subject: Re: [mpls] Secdir last call review of draft-ietf-mpls-app-aware-tldp-08
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From: Santosh Esale <sesale@juniper.net>
To: Alexey Melnikov <aamelnikov@fastmail.fm>, The IESG <iesg@ietf.org>
CC: "mpls@ietf.org" <mpls@ietf.org>, "draft-ietf-mpls-app-aware-tldp@ietf.org" <draft-ietf-mpls-app-aware-tldp@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>
Thread-Topic: [mpls] Alexey Melnikov's No Record on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/HnunzaDiXRg10IqEoQumOk5RINw>
Subject: Re: [mpls] Alexey Melnikov's No Record on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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From: Santosh Esale <sesale@juniper.net>
To: Ben Campbell <ben@nostrum.com>, The IESG <iesg@ietf.org>
CC: "draft-ietf-mpls-app-aware-tldp@ietf.org" <draft-ietf-mpls-app-aware-tldp@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "loa@pi.nu" <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Ben Campbell's No Objection on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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Date: Fri, 23 Jun 2017 21:08:27 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/60mh7R6xHeHQZarNZdnIsQoWJqc>
Subject: Re: [mpls] Ben Campbell's No Objection on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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From: Santosh Esale <sesale@juniper.net>
To: Warren Kumari <warren@kumari.net>, The IESG <iesg@ietf.org>
CC: "draft-ietf-mpls-app-aware-tldp@ietf.org" <draft-ietf-mpls-app-aware-tldp@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "loa@pi.nu" <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Warren Kumari's No Objection on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
Thread-Index: AQHS6qdPZkxrMDpITEK7H1UAkB2p0aIykK8A
Date: Fri, 23 Jun 2017 22:11:33 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/pG1QLi6AFxF3GL79oHUdD3PvUos>
Subject: Re: [mpls] Warren Kumari's No Objection on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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From: Abhishek Deshmukh <adeshmukh@juniper.net>
To: "mpls@ietf.org" <mpls@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>
CC: "draft-deshmukh-mpls-rsvp-rmr-extension@ietf.org" <draft-deshmukh-mpls-rsvp-rmr-extension@ietf.org>, "draft-ietf-mpls-rmr@ietf.org" <draft-ietf-mpls-rmr@ietf.org>, "draft-esale-ldp-rmr-extensions@ietf.org" <draft-esale-ldp-rmr-extensions@ietf.org>
Thread-Topic: Requesting feedback about RMR signaling drafts
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Subject: [mpls] Requesting feedback about RMR signaling drafts
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From nobody Fri Jun 23 16:50:18 2017
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Subject: [mpls] mpls - Update to a Meeting Session Request for IETF 99
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An update to a meeting session request has just been submitted by Stephanie McCammon, on behalf of the mpls working group.


---------------------------------------------------------
Working Group Name: Multiprotocol Label Switching
Area Name: Routing Area
Session Requester: Stephanie McCammon

Number of Sessions: 2
Length of Session(s):  2.5 Hours, 1 Hour
Number of Attendees: 150
Conflicts to Avoid: 
 First Priority: teas ccamp pce spring bess bfd idr pals bier detnet
 Second Priority: nvo3 sfc i2rs rtgarea rtgwg
 Third Priority: ospf isis sidr


People who must be present:
  George Swallow
  Loa Andersson
  Deborah Brungard
  Nicolai Leymann
  Tarek Saad

Resources Requested:

Special Requests:
  
---------------------------------------------------------


From nobody Fri Jun 23 17:09:35 2017
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Subject: [mpls] mpls - Requested sessions have been scheduled for IETF 99
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Dear Tarek Saad,

The session(s) that you have requested have been scheduled.
Below is the scheduled session information followed by
the original request. 

mpls Session 1 (2:30:00)
    Tuesday, Afternoon Session I 1330-1530
    Room Name: Congress Hall II size: 350
    ---------------------------------------------
    mpls Session 2 (1:00:00)
    Friday, Afternoon Session II 1150-1320
    Room Name: Grand Hilton Ballroom size: 250
    ---------------------------------------------
    


Request Information:


---------------------------------------------------------
Working Group Name: Multiprotocol Label Switching
Area Name: Routing Area
Session Requester: Tarek Saad

Number of Sessions: 2
Length of Session(s):  2.5 Hours, 1 Hour
Number of Attendees: 150
Conflicts to Avoid: 
 First Priority: teas ccamp pce spring bess bfd idr pals bier detnet
 Second Priority: nvo3 sfc i2rs rtgarea rtgwg
 Third Priority: ospf isis sidr


People who must be present:
  George Swallow
  Loa Andersson
  Deborah Brungard
  Nicolai Leymann
  Tarek Saad

Resources Requested:

Special Requests:
  
---------------------------------------------------------


From nobody Fri Jun 23 22:02:49 2017
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From: Ben Campbell <ben@nostrum.com>
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Date: Sat, 24 Jun 2017 00:02:40 -0500
Cc: The IESG <iesg@ietf.org>, "draft-ietf-mpls-app-aware-tldp@ietf.org" <draft-ietf-mpls-app-aware-tldp@ietf.org>,  "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "loa@pi.nu" <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
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To: Santosh Esale <sesale@juniper.net>
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Subject: Re: [mpls] Ben Campbell's No Objection on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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Hi,

Your responses resolve all of my comments.

Thanks!

Ben.

> On Jun 23, 2017, at 4:08 PM, Santosh Esale <sesale@juniper.net> wrote:
>=20
> Hello Ben, Please see inline for answers.
>=20
>=20
> On 6/22/17, 7:48 AM, "Ben Campbell" <ben@nostrum.com> wrote:
>=20
>> Ben Campbell has entered the following ballot position for
>> draft-ietf-mpls-app-aware-tldp-08: No Objection
>>=20
>> When responding, please keep the subject line intact and reply to all
>> email addresses included in the To and CC lines. (Feel free to cut =
this
>> introductory paragraph, however.)
>>=20
>>=20
>> Please refer to =
https://www.ietf.org/iesg/statement/discuss-criteria.html
>> for more information about IESG DISCUSS and COMMENT positions.
>>=20
>>=20
>> The document, along with other ballot positions, can be found here:
>> https://datatracker.ietf.org/doc/draft-ietf-mpls-app-aware-tldp/
>>=20
>>=20
>>=20
>> =
----------------------------------------------------------------------
>> COMMENT:
>> =
----------------------------------------------------------------------
>>=20
>> (I cleared my discuss. Alexey pointed out that the registration =
policies
>> for
>> unassigned ranges are explicitly mentioned in the table itself.
>> Apologies, I
>> missed that.)
>>=20
>> -General:  When you use the word "application", is a person skilled =
in
>> MPLS
>> automatically going to think in terms of the sort of "applications" =
listed
>> here? If not, it would be good to have a paragraph early in the
>> introduction
>> that describes what you mean by "applications". As an =
application-layer
>> person,
>> I tend to think of it in terms of application-layer applications. Am =
I
>> correct
>> to assume that it would not make sense to register, for example, HTTP =
in
>> the
>> the LDP Targeted Application Identifier registry?
> Correct.=20
> Also added the following definition of application to first paragraph =
-
> Targeted=20
> LDP application is an application that uses tLDP session to exchange
> information=20
> such as FEC-Label bindings with a peer LSR in the network.
>=20
>=20
>>=20
>> - 1.1: I noticed a number instances of at least "may" in lower case. =
If
>> your
>> intent is that lower case words not be treated as keywords, please
>> consider
>> using the new boilerplate from RFC 8174
>=20
> Updated.
>=20
>>=20
>> Nits:
>>=20
>> -1, first paragraph: "LDP uses extended discovery mechanism..."
>> Missing article before "discovery".
>=20
> Updated.
>>=20
>> -2.2, paragraph 4 and 5, "... a maximum value, as 0xffff.": should =
"as" be
>> "such as"?
>=20
> Yes. Updated.
>=20
>>=20
>> -2.2, paragraphs 6 and 7: the "it" in the opening sentence of each
>> paragraph
>> has an unclear antecedent.
>=20
> =E2=80=98it=E2=80=99 was referring to an antecedent from the previous =
paragraph.
> Can =E2=80=98it' jump over to refer to the noun in the previous =
paragraph ? :)
> Updated to replace =E2=80=98it=E2=80=99 with the =E2=80=98noun=E2=80=99 =
.
>>=20
> Thanks,
> Santosh on behalf of Authors
>=20


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From: Warren Kumari <warren@kumari.net>
Date: Sat, 24 Jun 2017 12:15:19 +0000
Message-ID: <CAHw9_iJZ3y6DgA+Y=nGPegZTXrKwJ50PR8rEr9r99VuhQYpP5g@mail.gmail.com>
To: Santosh Esale <sesale@juniper.net>, The IESG <iesg@ietf.org>
Cc: "draft-ietf-mpls-app-aware-tldp@ietf.org" <draft-ietf-mpls-app-aware-tldp@ietf.org>, "loa@pi.nu" <loa@pi.nu>,  "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>
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Subject: Re: [mpls] Warren Kumari's No Objection on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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--001a1145807083f3b40552b3acc5
Content-Type: text/plain; charset="UTF-8"

Cool, thanks for addressing / considering my comments.

W
[sent from a phone; apologies for terseness / autocorrect fun....]


On Fri, Jun 23, 2017 at 6:11 PM Santosh Esale <sesale@juniper.net> wrote:

> Warren,
> Thanks for the review and comments. Answers inline.
>
>
> On 6/21/17, 8:59 AM, "Warren Kumari" <warren@kumari.net> wrote:
>
> >Warren Kumari has entered the following ballot position for
> >draft-ietf-mpls-app-aware-tldp-08: No Objection
> >
> >When responding, please keep the subject line intact and reply to all
> >email addresses included in the To and CC lines. (Feel free to cut this
> >introductory paragraph, however.)
> >
> >
> >Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
> >for more information about IESG DISCUSS and COMMENT positions.
> >
> >
> >The document, along with other ballot positions, can be found here:
> >https://datatracker.ietf.org/doc/draft-ietf-mpls-app-aware-tldp/
> >
> >
> >
> >----------------------------------------------------------------------
> >COMMENT:
> >----------------------------------------------------------------------
> >
> >1: Does this document really need 6 front page authors?
> The latest version has 5 authors on the front page.
> >
> >2: The shepherd writeup says: "We are aware of several intentions to
> >implement
> >this secification. An implementation poll has been sent to the working
> >group
> >and as further information is received, the write-up will be updated." --
> >was
> >any further info received?
> I would let Loa answer it.
> >
> >3: The shepherd writeup also says: "There is one small issue that I'm
> >currently
> >clearing with IANA." -- is this the value of the status code E bit? Or
> >some
> >other issue?
> AFAIK, it is the value of the status code E bit.
> >
> >Nits:
> >1: There are are a number of unexpanded acronyms -- e.g: LSP is no "well
> >known"
> >- https://www.rfc-editor.org/materials/abbrev.expansion.txt
> Updated.
> >
> >2: Sec 1  Introduction
> >"LDP uses extended discovery mechanism to establish..." - "LDP uses *the*
> >extended discovery mechanism" (or discovery *mechanisms*)
> Its the former. Updated.
>
> >3: Sec 1  Introduction
> > "An LSR initiates extended discovery... " - "A LSR..." ("An Label Switch"
> > wouldn't make much sense)
> Updated.
>
> >4: Sec 1  Introduction
> >"In addition, since the session is initiated and established after
> >adjacency
> >formation, the responding LSR has no targeted applications information to
> >choose the targeted application" - "has no targeted applications
> >information
> >available to choose which targeted application".
> Updated.
> >
> >5: Sec 1  Introduction
> >"Also, targeted LDP application is mapped .." - "Also, the targeted LDP
> >application is mapped"
> Updated.
> >
> >6: Sec 1.2 Terminology
> >"This document uses terminology discussed in [RFC7473] along with others
> >defined in this document." feels clumsy. How about: "In addition to the
> >terminology defined in [RFC7473], this document uses the following terms:
> >"
> Updated.
> >
> >7: Sec 2.1 Encoding
> >"An LSR MAY advertise that it is capable to negotiate a targeted LDP ..."
> >- "An
> >LSR MAY advertise that it is capable of negotiating a targeted LDP ..."
> Updated.
> >
>
> Santosh (on behalf of Authors)
> >
>
> --
I don't think the execution is relevant when it was obviously a bad idea in
the first place.
This is like putting rabid weasels in your pants, and later expressing
regret at having chosen those particular rabid weasels and that pair of
pants.
   ---maf

--001a1145807083f3b40552b3acc5
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div dir=3D"auto">Cool, thanks for addressing / considering my comments.</d=
iv><div dir=3D"auto"><br></div><div dir=3D"auto">W</div><div dir=3D"auto">[=
sent from a phone; apologies for terseness / autocorrect fun....]</div><div=
 dir=3D"auto"><br></div><div><br><div class=3D"gmail_quote"><div>On Fri, Ju=
n 23, 2017 at 6:11 PM Santosh Esale &lt;<a href=3D"mailto:sesale@juniper.ne=
t">sesale@juniper.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex=
">Warren,<br>
Thanks for the review and comments. Answers inline.<br>
<br>
<br>
On 6/21/17, 8:59 AM, &quot;Warren Kumari&quot; &lt;<a href=3D"mailto:warren=
@kumari.net" target=3D"_blank">warren@kumari.net</a>&gt; wrote:<br>
<br>
&gt;Warren Kumari has entered the following ballot position for<br>
&gt;draft-ietf-mpls-app-aware-tldp-08: No Objection<br>
&gt;<br>
&gt;When responding, please keep the subject line intact and reply to all<b=
r>
&gt;email addresses included in the To and CC lines. (Feel free to cut this=
<br>
&gt;introductory paragraph, however.)<br>
&gt;<br>
&gt;<br>
&gt;Please refer to <a href=3D"https://www.ietf.org/iesg/statement/discuss-=
criteria.html" rel=3D"noreferrer" target=3D"_blank">https://www.ietf.org/ie=
sg/statement/discuss-criteria.html</a><br>
&gt;for more information about IESG DISCUSS and COMMENT positions.<br>
&gt;<br>
&gt;<br>
&gt;The document, along with other ballot positions, can be found here:<br>
&gt;<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-mpls-app-aware-t=
ldp/" rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/doc=
/draft-ietf-mpls-app-aware-tldp/</a><br>
&gt;<br>
&gt;<br>
&gt;<br>
&gt;----------------------------------------------------------------------<=
br>
&gt;COMMENT:<br>
&gt;----------------------------------------------------------------------<=
br>
&gt;<br>
&gt;1: Does this document really need 6 front page authors?<br>
The latest version has 5 authors on the front page.<br>
&gt;<br>
&gt;2: The shepherd writeup says: &quot;We are aware of several intentions =
to<br>
&gt;implement<br>
&gt;this secification. An implementation poll has been sent to the working<=
br>
&gt;group<br>
&gt;and as further information is received, the write-up will be updated.&q=
uot; --<br>
&gt;was<br>
&gt;any further info received?<br>
I would let Loa answer it.<br>
&gt;<br>
&gt;3: The shepherd writeup also says: &quot;There is one small issue that =
I&#39;m<br>
&gt;currently<br>
&gt;clearing with IANA.&quot; -- is this the value of the status code E bit=
? Or<br>
&gt;some<br>
&gt;other issue?<br>
AFAIK, it is the value of the status code E bit.<br>
&gt;<br>
&gt;Nits:<br>
&gt;1: There are are a number of unexpanded acronyms -- e.g: LSP is no &quo=
t;well<br>
&gt;known&quot;<br>
&gt;- <a href=3D"https://www.rfc-editor.org/materials/abbrev.expansion.txt"=
 rel=3D"noreferrer" target=3D"_blank">https://www.rfc-editor.org/materials/=
abbrev.expansion.txt</a><br>
Updated.<br>
&gt;<br>
&gt;2: Sec 1=C2=A0 Introduction<br>
&gt;&quot;LDP uses extended discovery mechanism to establish...&quot; - &qu=
ot;LDP uses *the*<br>
&gt;extended discovery mechanism&quot; (or discovery *mechanisms*)<br>
Its the former. Updated.<br>
<br>
&gt;3: Sec 1=C2=A0 Introduction<br>
&gt; &quot;An LSR initiates extended discovery... &quot; - &quot;A LSR...&q=
uot; (&quot;An Label Switch&quot;<br>
&gt; wouldn&#39;t make much sense)<br>
Updated.<br>
<br>
&gt;4: Sec 1=C2=A0 Introduction<br>
&gt;&quot;In addition, since the session is initiated and established after=
<br>
&gt;adjacency<br>
&gt;formation, the responding LSR has no targeted applications information =
to<br>
&gt;choose the targeted application&quot; - &quot;has no targeted applicati=
ons<br>
&gt;information<br>
&gt;available to choose which targeted application&quot;.<br>
Updated.<br>
&gt;<br>
&gt;5: Sec 1=C2=A0 Introduction<br>
&gt;&quot;Also, targeted LDP application is mapped ..&quot; - &quot;Also, t=
he targeted LDP<br>
&gt;application is mapped&quot;<br>
Updated.<br>
&gt;<br>
&gt;6: Sec 1.2 Terminology<br>
&gt;&quot;This document uses terminology discussed in [RFC7473] along with =
others<br>
&gt;defined in this document.&quot; feels clumsy. How about: &quot;In addit=
ion to the<br>
&gt;terminology defined in [RFC7473], this document uses the following term=
s:<br>
&gt;&quot;<br>
Updated.<br>
&gt;<br>
&gt;7: Sec 2.1 Encoding<br>
&gt;&quot;An LSR MAY advertise that it is capable to negotiate a targeted L=
DP ...&quot;<br>
&gt;- &quot;An<br>
&gt;LSR MAY advertise that it is capable of negotiating a targeted LDP ...&=
quot;<br>
Updated.<br>
&gt;<br>
<br>
Santosh (on behalf of Authors)<br>
&gt;<br>
<br>
</blockquote></div></div><div dir=3D"ltr">-- <br></div><div data-smartmail=
=3D"gmail_signature">I don&#39;t think the execution is relevant when it wa=
s obviously a bad idea in the first place.<br>This is like putting rabid we=
asels in your pants, and later expressing regret at having chosen those par=
ticular rabid weasels and that pair of pants.<br>=C2=A0 =C2=A0---maf</div>

--001a1145807083f3b40552b3acc5--


From nobody Mon Jun 26 08:16:11 2017
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Subject: [mpls] I-D Action: draft-bryant-mpls-sfl-framework-05.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching of the IETF.

        Title           : Synonymous Flow Label Framework
        Authors         : Stewart Bryant
                          Mach Chen
                          Zhenbin Li
                          George Swallow
                          Siva Sivabalan
                          Gregory Mirsky
	Filename        : draft-bryant-mpls-sfl-framework-05.txt
	Pages           : 10
	Date            : 2017-06-26

Abstract:
   draft-ietf-mpls-flow-ident describes the requirement for introducing
   flow identities within the MPLS architecture.  This document
   describes a method of accomplishing this by using a technique called
   Synonymous Flow Labels in which labels which mimic the behaviour of
   other labels provide the identification service.  These identifiers
   can be used to trigger per-flow operations on the on the packet at
   the receiving label switching router.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-bryant-mpls-sfl-framework/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-bryant-mpls-sfl-framework-05
https://datatracker.ietf.org/doc/html/draft-bryant-mpls-sfl-framework-05

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-bryant-mpls-sfl-framework-05


Please note that it may take a couple of minutes from the time of submission
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From nobody Mon Jun 26 08:22:23 2017
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From: Stewart Bryant <stewart.bryant@gmail.com>
Cc: "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "draft-bryant-mpls-sfl-framework@ietf.org" <draft-bryant-mpls-sfl-framework@ietf.org>
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Subject: Re: [mpls] I-D Action: draft-bryant-mpls-sfl-framework-05.txt
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The changes in this version are the inclusion of RFC2119 boilerplate 
(which nits
doesn't like) and the following replacement text for point two in Section 5
(Equal Cost Multipath Considerations )

    2.  The operator can elect to use [RFC6790] Entropy Labels in a
        network that fully supports this type of ECMP.  If this approach
        is adopted, the intervening MPLS network MUST NOT load balance on
        any packet field other than the entropy label.  Note that this is
        stricter than the text in Section 4.2 of [RFC6790].  In networks
        in which the ECMP decision is independent of both the value of
        any other label in the label stack, and the MPLS payload, the
        path of the flow with the SFL will be congruent with the path
        without the SFL.

I think that this addresses the concerns raised during the previous review.

If there are any other points that I missed, please let me know. Otherwise
I think that we are ready to move forward.

- Stewart

On 26/06/2017 16:16, internet-drafts@ietf.org wrote:
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> This draft is a work item of the Multiprotocol Label Switching of the IETF.
>
>          Title           : Synonymous Flow Label Framework
>          Authors         : Stewart Bryant
>                            Mach Chen
>                            Zhenbin Li
>                            George Swallow
>                            Siva Sivabalan
>                            Gregory Mirsky
> 	Filename        : draft-bryant-mpls-sfl-framework-05.txt
> 	Pages           : 10
> 	Date            : 2017-06-26
>
> Abstract:
>     draft-ietf-mpls-flow-ident describes the requirement for introducing
>     flow identities within the MPLS architecture.  This document
>     describes a method of accomplishing this by using a technique called
>     Synonymous Flow Labels in which labels which mimic the behaviour of
>     other labels provide the identification service.  These identifiers
>     can be used to trigger per-flow operations on the on the packet at
>     the receiving label switching router.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-bryant-mpls-sfl-framework/
>
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-bryant-mpls-sfl-framework-05
> https://datatracker.ietf.org/doc/html/draft-bryant-mpls-sfl-framework-05
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-bryant-mpls-sfl-framework-05
>
>
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
>
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls


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<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <p><br>
    </p>
    The changes in this version are the inclusion of RFC2119 boilerplate
    (which nits<br>
    doesn't like) and the following replacement text for point two in
    Section 5<br>
    (Equal Cost Multipath Considerations )<br>
    <br class="Apple-interchange-newline">
    <pre style="color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; word-wrap: break-word; white-space: pre-wrap;">   2.  The operator can elect to use [RFC6790] Entropy Labels in a
       network that fully supports this type of ECMP.  If this approach
       is adopted, the intervening MPLS network MUST NOT load balance on
       any packet field other than the entropy label.  Note that this is
       stricter than the text in Section 4.2 of [RFC6790].  In networks
       in which the ECMP decision is independent of both the value of
       any other label in the label stack, and the MPLS payload, the
       path of the flow with the SFL will be congruent with the path
       without the SFL.

I think that this addresses the concerns raised during the previous review.

If there are any other points that I missed, please let me know. Otherwise
I think that we are ready to move forward.

- Stewart 
</pre>
    <div class="moz-cite-prefix">On 26/06/2017 16:16, <a
        class="moz-txt-link-abbreviated"
        href="mailto:internet-drafts@ietf.org">internet-drafts@ietf.org</a>
      wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:149849016314.31785.4382578305769033764@ietfa.amsl.com">
      <pre wrap="">A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching of the IETF.

        Title           : Synonymous Flow Label Framework
        Authors         : Stewart Bryant
                          Mach Chen
                          Zhenbin Li
                          George Swallow
                          Siva Sivabalan
                          Gregory Mirsky
	Filename        : draft-bryant-mpls-sfl-framework-05.txt
	Pages           : 10
	Date            : 2017-06-26

Abstract:
   draft-ietf-mpls-flow-ident describes the requirement for introducing
   flow identities within the MPLS architecture.  This document
   describes a method of accomplishing this by using a technique called
   Synonymous Flow Labels in which labels which mimic the behaviour of
   other labels provide the identification service.  These identifiers
   can be used to trigger per-flow operations on the on the packet at
   the receiving label switching router.


The IETF datatracker status page for this draft is:
<a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/draft-bryant-mpls-sfl-framework/">https://datatracker.ietf.org/doc/draft-bryant-mpls-sfl-framework/</a>

There are also htmlized versions available at:
<a class="moz-txt-link-freetext" href="https://tools.ietf.org/html/draft-bryant-mpls-sfl-framework-05">https://tools.ietf.org/html/draft-bryant-mpls-sfl-framework-05</a>
<a class="moz-txt-link-freetext" href="https://datatracker.ietf.org/doc/html/draft-bryant-mpls-sfl-framework-05">https://datatracker.ietf.org/doc/html/draft-bryant-mpls-sfl-framework-05</a>

A diff from the previous version is available at:
<a class="moz-txt-link-freetext" href="https://www.ietf.org/rfcdiff?url2=draft-bryant-mpls-sfl-framework-05">https://www.ietf.org/rfcdiff?url2=draft-bryant-mpls-sfl-framework-05</a>


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
<a class="moz-txt-link-freetext" href="ftp://ftp.ietf.org/internet-drafts/">ftp://ftp.ietf.org/internet-drafts/</a>

_______________________________________________
mpls mailing list
<a class="moz-txt-link-abbreviated" href="mailto:mpls@ietf.org">mpls@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/mpls">https://www.ietf.org/mailman/listinfo/mpls</a>
</pre>
    </blockquote>
    <br>
  </body>
</html>

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From: Santosh Esale <sesale@juniper.net>
To: Eric Rescorla <ekr@rtfm.com>, The IESG <iesg@ietf.org>
CC: "draft-ietf-mpls-app-aware-tldp@ietf.org" <draft-ietf-mpls-app-aware-tldp@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "loa@pi.nu" <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
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Subject: Re: [mpls] Eric Rescorla's No Objection on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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From: Santosh Esale <sesale@juniper.net>
To: Adam Roach <adam@nostrum.com>, The IESG <iesg@ietf.org>
CC: "draft-ietf-mpls-app-aware-tldp@ietf.org" <draft-ietf-mpls-app-aware-tldp@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "loa@pi.nu" <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Adam Roach's No Objection on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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Date: Mon, 26 Jun 2017 21:39:28 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/EGthqIDvxB7IrmwSQqrbgg49a10>
Subject: Re: [mpls] Adam Roach's No Objection on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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From: Santosh Esale <sesale@juniper.net>
To: Benoit Claise <bclaise@cisco.com>, The IESG <iesg@ietf.org>
CC: "draft-ietf-mpls-app-aware-tldp@ietf.org" <draft-ietf-mpls-app-aware-tldp@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "loa@pi.nu" <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
Thread-Topic: Benoit Claise's No Objection on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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Date: Mon, 26 Jun 2017 22:54:43 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/fEQN9LAEuaZBE2wFloUFxijkGWA>
Subject: Re: [mpls] Benoit Claise's No Objection on draft-ietf-mpls-app-aware-tldp-08: (with COMMENT)
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From nobody Tue Jun 27 13:30:12 2017
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From: Stewart Bryant <stewart@g3ysx.org.uk>
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Subject: [mpls] Rtgdir last call review of draft-ietf-mpls-rfc3107bis-02
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Reviewer: Stewart Bryant
Review result: Ready

Firstly my apologies for the lateness of this review.

This is a very well written draft, and can proceed as is.

Useful clarity might be added to Section 4 (dataplane) by the inclusion of some
figures. I say this as someone that finds it easier to take in information in
that format, so that is a personal preference comment, the text is correct and
technically sufficient.

There is an intriguing piece of text in the dataplane section "While this may
be useful in certain scenarios, it may provide unintended results in other
scenarios." which I think might be usefully expanded to give at least one
example of a use, and an unintended consequence.

In the introduction it says: "In [RFC3107], this feature was controlled by a
BGP Capability Code that has never been implemented, and is now essentially
obsolete." which left me wondering whether there was the intention to formally
deprecate the feature through the RFC system.


From nobody Tue Jun 27 14:16:05 2017
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To: Eric C Rosen <erosen@juniper.net>, Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>, idr@ietf.org, BESS <bess@ietf.org>
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Subject: Re: [mpls] Closed -- Working Group Last Call on draft-ietf-mpls-rfc3107bis
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Hi,

    I know this is a late comment, but feel free to view it as an early
IETF LC comment if you wish:-)

Section 5  seems to catalogue a fair number of options and allows for
incompatible implementations:

   These differences in the behavior of different implementations may
   result in unexpected behavior or lack of interoperability.  In some
   cases, it may be difficult or impossible to achieve the desired
   policies with certain implementations or combinations of
   implementations.

It would be really nice to have something (or some combination) at least
recommended to be implemented to ensure interoperability.  Do you think
it's possible to define such a recommendation, or do we just punt?
(Surely there is a defacto default/minimal mode already in the market!)

Thanks,
Lou

On 5/11/2017 12:45 PM, Eric C Rosen wrote:
> I have now posted draft-ietf-mpls-rfc3107bis-02.txt, which I believe 
> addresses the LC comments.
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>


From nobody Tue Jun 27 14:44:22 2017
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From: "Matt Hartley (mhartley)" <mhartley@cisco.com>
To: "TEAS WG (teas@ietf.org)" <teas@ietf.org>, "ccamp@ietf.org" <ccamp@ietf.org>, "pce@ietf.org" <pce@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>
CC: "teas-chairs@ietf.org" <teas-chairs@ietf.org>, "Matt Hartley (mhartley)" <mhartley@cisco.com>
Thread-Topic: Agenda for Joint Yang WG session in Prague
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Subject: [mpls] Agenda for Joint Yang WG session in Prague
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All,

Once again, we'll be having a joint Yang session. This time, TEAS is hostin=
g, which means I get to organize the agenda.

We're meeting at 13:30 - 15:30 on Thursday July 20th. Please send slot requ=
ests for the TEAS session to me by the end of the day on Monday, July 3rd (=
that's next week). Note that this is also the deadline for draft submission=
.

We'll need slides for presentation by Friday, July 14th so that we can get =
them ready to present over the weekend.

Cheers

Matt/Lou/Pavan


From nobody Tue Jun 27 21:40:02 2017
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Subject: [mpls] I-D Action: draft-ietf-mpls-app-aware-tldp-09.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching of the IETF.

        Title           : Application-aware Targeted LDP
        Authors         : Santosh Esale
                          Raveendra Torvi
                          Luay Jalil
                          Uma Chunduri
                          Kamran Raza
	Filename        : draft-ietf-mpls-app-aware-tldp-09.txt
	Pages           : 18
	Date            : 2017-06-27

Abstract:
   Recent targeted Label Distribution Protocol (tLDP) applications such
   as remote loop-free alternate (LFA) and BGP auto discovered
   pseudowire may automatically establish a tLDP session to any Label
   Switching Router (LSR) in a network.  The initiating LSR has
   information about the targeted applications to administratively
   control initiation of the session. However, the responding LSR has no
   such information to control acceptance of this session. This document
   defines a mechanism to advertise and negotiate Targeted Applications
   Capability (TAC) during LDP session initialization.  As the
   responding LSR becomes aware of targeted applications, it may
   establish a limited number of tLDP sessions for certain applications.
   In addition, each targeted application is mapped to LDP Forwarding
   Equivalence Class (FEC) Elements to advertise only necessary LDP FEC-
   label bindings over the session. This document updates RFC 7473 for
   enabling advertisement of LDP FEC-label bindings over the session.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-mpls-app-aware-tldp/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-mpls-app-aware-tldp-09
https://datatracker.ietf.org/doc/html/draft-ietf-mpls-app-aware-tldp-09

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-app-aware-tldp-09


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


From nobody Wed Jun 28 03:35:16 2017
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From: Loa Andersson <loa@pi.nu>
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Subject: [mpls] IPR poll on draft-bryant-mpls-sfl-framework
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Working Group, authors,

We have started to prepare the the draft-bryant-mpls-sfl-framework for
working group adoption, prior to the wgap we need to do an IPR poll.

This mail starts this IPR poll.

Are you aware of any IPR that applies to draft-bryant-mpls-sfl-framework?

If so, has this IPR been disclosed in compliance with IETF IPR rules
(see RFCs 3979, 4879, 3669 and 5378 for more details).

There are two IPR disclosures against draft-bryant-mpls-sfl-framework.

If you are listed as a document author or contributor please respond to
this email regardless of whether or not you are aware of any relevant
IPR. *The response needs to be sent to the MPLS WG mailing list.* The
document will not advance to the next stage until a response has been
received from each author and contributor.

If you are on the MPLS WG email list but are not listed as an author or
contributor, then please explicitly respond only if you are aware of any
IPR that has not yet been disclosed in conformance with IETF rules.


/Loa
  mpls wg co-chair

-- 


Loa Andersson                        email: loa@mail01.huawei.com
Senior MPLS Expert                          loa@pi.nu
Huawei Technologies (consultant)     phone: +46 739 81 21 64


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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/1dYcuZkMp6hP-7D7yDZx0jcobAg>
Subject: Re: [mpls] Rtgdir last call review of draft-ietf-mpls-rfc3107bis-02
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On 6/27/2017 4:29 PM, Stewart Bryant wrote:
> In the introduction it says: "In [RFC3107], this feature was controlled by a
> BGP Capability Code that has never been implemented, and is now essentially
> obsolete." which left me wondering whether there was the intention to formally
> deprecate the feature through the RFC system.

The IANA consideration section of this document requests that the 
"multiple routes to a destination" capability code be marked as 
deprecated, with a reference to this document.  Isn't that sufficient?


From nobody Wed Jun 28 06:25:08 2017
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To: Eric C Rosen <erosen@juniper.net>, rtg-dir@ietf.org
Cc: mpls@ietf.org, draft-ietf-mpls-rfc3107bis.all@ietf.org, ietf@ietf.org
References: <149859539754.31085.2059230421371020521@ietfa.amsl.com> <3c405108-c18f-8f1b-b9e7-25d08157e1ee@juniper.net>
From: Stewart Bryant <stewart@g3ysx.org.uk>
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Date: Wed, 28 Jun 2017 14:24:59 +0100
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/0oVGyfiHxd31HF4wPTf3ZoBP60k>
Subject: Re: [mpls] Rtgdir last call review of draft-ietf-mpls-rfc3107bis-02
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On 28/06/2017 13:52, Eric C Rosen wrote:
> On 6/27/2017 4:29 PM, Stewart Bryant wrote:
>> In the introduction it says: "In [RFC3107], this feature was 
>> controlled by a
>> BGP Capability Code that has never been implemented, and is now 
>> essentially
>> obsolete." which left me wondering whether there was the intention to 
>> formally
>> deprecate the feature through the RFC system.
>
> The IANA consideration section of this document requests that the 
> "multiple routes to a destination" capability code be marked as 
> deprecated, with a reference to this document.  Isn't that sufficient?
>

Hi Eric,

Sorry I missed that.

I am not sure if the same protocol applies to IANA codepoints as RFCs, 
but if you were obsoleting an RFC it would need to be noted in the 
abstract and the introduction.

If you do a respin it might be better to note the deprecation near the 
text on obsolescence, since people tend to read the main text and not 
the IANA section. However at the end of the day it is up to the AD how 
they want to handle this.

- Stewart


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From: "Matt Hartley (mhartley)" <mhartley@cisco.com>
To: "TEAS WG (teas@ietf.org)" <teas@ietf.org>, "ccamp@ietf.org" <ccamp@ietf.org>, "pce@ietf.org" <pce@ietf.org>, "mpls@ietf.org" <mpls@ietf.org>
CC: "teas-chairs@ietf.org" <teas-chairs@ietf.org>, "Matt Hartley (mhartley)" <mhartley@cisco.com>
Thread-Topic: Agenda for Joint Yang WG session in Prague
Thread-Index: AdLvjgoSaBfnmsHxTqCqVsjaruTqnAAk39mQ
Date: Wed, 28 Jun 2017 15:17:20 +0000
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Subject: Re: [mpls] Agenda for Joint Yang WG session in Prague
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A clarification on this: keep in mind that the joint session is intended to=
 provide a forum for raising YANG related issues or impacts that relate to =
more than one of the participating WGs (PCE, CCAMP, MPLS, and TEAS).  Simpl=
e updates or single WG issues should be discussed in the respective WG sess=
ion.

Matt/Lou/Pavan

> All,
>=20
> Once again, we'll be having a joint Yang session. This time, TEAS is
> hosting, which means I get to organize the agenda.
>=20
> We're meeting at 13:30 - 15:30 on Thursday July 20th. Please send slot
> requests for the TEAS session to me by the end of the day on Monday, July
> 3rd (that's next week). Note that this is also the deadline for draft
> submission.
>=20
> We'll need slides for presentation by Friday, July 14th so that we can ge=
t
> them ready to present over the weekend.
>=20
> Cheers
>=20
> Matt/Lou/Pavan


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From: "BRUNGARD, DEBORAH A" <db3546@att.com>
To: Stewart Bryant <stewart@g3ysx.org.uk>, Eric C Rosen <erosen@juniper.net>,  "rtg-dir@ietf.org" <rtg-dir@ietf.org>
CC: "mpls@ietf.org" <mpls@ietf.org>, "draft-ietf-mpls-rfc3107bis.all@ietf.org" <draft-ietf-mpls-rfc3107bis.all@ietf.org>
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Subject: Re: [mpls] Rtgdir last call review of draft-ietf-mpls-rfc3107bis-02
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From nobody Wed Jun 28 08:43:15 2017
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/ZmSvbQT0VDdTMTw9WTS8fR4KUQQ>
Subject: [mpls] Protocol Action: 'Updates to MPLS Transport Profile (MPLS-TP) Linear Protection in Automatic Protection Switching (APS) Mode' to Proposed Standard (draft-ietf-mpls-tp-aps-updates-04.txt)
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The IESG has approved the following document:
- 'Updates to MPLS Transport Profile (MPLS-TP) Linear Protection in
   Automatic Protection Switching (APS) Mode'
  (draft-ietf-mpls-tp-aps-updates-04.txt) as Proposed Standard

This document is the product of the Multiprotocol Label Switching Working
Group.

The IESG contact persons are Alvaro Retana, Alia Atlas and Deborah
Brungard.

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-mpls-tp-aps-updates/





Technical Summary

 The document contains updates to MPLS Transport Profile (MPLS-TP)
 linear protection in Automatic Protection Switching (APS) mode
 defined in RFC 7271.  The updates provide rules related to the
 initialization of the Protection State Coordination (PSC) Control
 Logic. When PSC operates in APS mode, the state machine is part of
 the control logic. The document also clarifies some operations
 related to state transition table lookup.

Working Group Summary

 The interest in MPLS-TP is slightly waning, however there is a
  rather strong group within the working group working on the last
  MPLS-TP documents. The MPLS WG is also committed to complete the
  MPLS-TP project. This document has been greatly improved in the
  reviews during the working group process.

Document Quality

 We know of a several vendors that intend to implement this 
  specification, we actually expect every implementor that did
  implement  RFC 7271 to implement.
  Several vendors have said that they will implement "as soon as it
  is an RFC".

Personnel

   Who is the Document Shepherd for this document?  Loa Andersson
   Who is the Responsible Area Director? Deborah Brungard


From nobody Wed Jun 28 09:05:08 2017
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The IESG has received a request from the Multiprotocol Label Switching WG
(mpls) to consider the following document: - 'Using BGP to Bind MPLS Labels
to Address Prefixes'
  <draft-ietf-mpls-rfc3107bis-02.txt> as Proposed Standard

The IESG plans to make a decision in the next few weeks, and solicits final
comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2017-07-12. Exceptionally, comments may be
sent to iesg@ietf.org instead. In either case, please retain the beginning of
the Subject line to allow automated sorting.

Abstract


   This document specifies a set of procedures for using BGP to
   advertise that a specified router has bound a specified MPLS label
   (or a specified sequence of MPLS labels, organized as a contiguous
   part of a label stack) to a specified address prefix.  This can be
   done by sending a BGP UPDATE message whose Network Layer Reachability
   Information field contains both the prefix and the MPLS label(s), and
   whose Next Hop field identifies the node at which said prefix is
   bound to said label(s).  This document obsoletes RFC 3107.




The file can be obtained via
https://datatracker.ietf.org/doc/draft-ietf-mpls-rfc3107bis/

IESG discussion can be tracked via
https://datatracker.ietf.org/doc/draft-ietf-mpls-rfc3107bis/ballot/


No IPR declarations have been submitted directly on this I-D.





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Subject: [mpls] Protocol Action: 'Application-aware Targeted LDP' to Proposed Standard (draft-ietf-mpls-app-aware-tldp-09.txt)
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The IESG has approved the following document:
- 'Application-aware Targeted LDP'
  (draft-ietf-mpls-app-aware-tldp-09.txt) as Proposed Standard

This document is the product of the Multiprotocol Label Switching Working
Group.

The IESG contact persons are Alvaro Retana, Alia Atlas and Deborah
Brungard.

A URL of this Internet Draft is:
https://datatracker.ietf.org/doc/draft-ietf-mpls-app-aware-tldp/





Technical Summary

   Some tLDP applications e.g. remote loop-free alternate (LFA) and 
   BGP auto discovered pseudowires may establish a tLDP session to any
   LSR in a network. The LSR that initializes such a session has 
   enough information to administratively control initiation of the
   session. The targetted LSR normally does not have the information 
   necessary to control acceptance of the requested session. This 
   document defines a mechanism to advertise and negotiate Targeted 
   Applications Capability (TAC) during LDP session initialization.
   The targetted LSR is made aware of targeted applications through
   the TAC information. When this happens it can establish a limited 
   number of tLDP sessions for certain applications.
   In addition, each targeted application is mapped to LDP Forwarding
   Equivalence Class (FEC) Elements to advertise only necessary LDP 
   FEC-label bindings over the session.

Working Group Summary

The WG process for this document has been fairly normal, and 
the working agreed that this is a necessary extension to LDP
for some applications. Discussion has been targeted on resolving
a small number of outstanding issues. The consensus in the working
was good. 

Document Quality

We are aware of several intentions to implement this specification.
 An implementation poll has been sent to the working group and as
 further information is received, the write-up will be updated.
 No expert review outside the working group is necessary.

Personnel

   Who is the Document Shepherd for this document? Loa Andersson
   Who is the Responsible Area Director?  Deborah Brungard


From nobody Wed Jun 28 10:00:03 2017
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To: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
Cc: draft-bryant-mpls-sfl-framework@ietf.org, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>
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From: Stewart Bryant <stewart.bryant@gmail.com>
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Date: Wed, 28 Jun 2017 17:59:54 +0100
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Subject: Re: [mpls] IPR poll on draft-bryant-mpls-sfl-framework
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The only IPR I am aware of is the IPR that has already been declared.

- Stewart


On 28/06/2017 11:35, Loa Andersson wrote:
>
> Working Group, authors,
>
> We have started to prepare the the draft-bryant-mpls-sfl-framework for
> working group adoption, prior to the wgap we need to do an IPR poll.
>
> This mail starts this IPR poll.
>
> Are you aware of any IPR that applies to draft-bryant-mpls-sfl-framework?
>
> If so, has this IPR been disclosed in compliance with IETF IPR rules
> (see RFCs 3979, 4879, 3669 and 5378 for more details).
>
> There are two IPR disclosures against draft-bryant-mpls-sfl-framework.
>
> If you are listed as a document author or contributor please respond to
> this email regardless of whether or not you are aware of any relevant
> IPR. *The response needs to be sent to the MPLS WG mailing list.* The
> document will not advance to the next stage until a response has been
> received from each author and contributor.
>
> If you are on the MPLS WG email list but are not listed as an author or
> contributor, then please explicitly respond only if you are aware of any
> IPR that has not yet been disclosed in conformance with IETF rules.
>
>
> /Loa
>  mpls wg co-chair
>


From nobody Wed Jun 28 10:50:27 2017
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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Wed, 28 Jun 2017 10:50:22 -0700
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To: Loa Andersson <loa@pi.nu>
Cc: "mpls@ietf.org" <mpls@ietf.org>, draft-bryant-mpls-sfl-framework@ietf.org,  "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>
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Subject: Re: [mpls] IPR poll on draft-bryant-mpls-sfl-framework
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--f403043622c07c2f32055308d152
Content-Type: text/plain; charset="UTF-8"

Hi Loa,
I'm not aware of any IPR other than IPR that already has been disclosed.

Regards,
Greg

On Wed, Jun 28, 2017 at 3:35 AM, Loa Andersson <loa@pi.nu> wrote:

>
> Working Group, authors,
>
> We have started to prepare the the draft-bryant-mpls-sfl-framework for
> working group adoption, prior to the wgap we need to do an IPR poll.
>
> This mail starts this IPR poll.
>
> Are you aware of any IPR that applies to draft-bryant-mpls-sfl-framework?
>
> If so, has this IPR been disclosed in compliance with IETF IPR rules
> (see RFCs 3979, 4879, 3669 and 5378 for more details).
>
> There are two IPR disclosures against draft-bryant-mpls-sfl-framework.
>
> If you are listed as a document author or contributor please respond to
> this email regardless of whether or not you are aware of any relevant
> IPR. *The response needs to be sent to the MPLS WG mailing list.* The
> document will not advance to the next stage until a response has been
> received from each author and contributor.
>
> If you are on the MPLS WG email list but are not listed as an author or
> contributor, then please explicitly respond only if you are aware of any
> IPR that has not yet been disclosed in conformance with IETF rules.
>
>
> /Loa
>  mpls wg co-chair
>
> --
>
>
> Loa Andersson                        email: loa@mail01.huawei.com
> Senior MPLS Expert                          loa@pi.nu
> Huawei Technologies (consultant)     phone: +46 739 81 21 64
>
> _______________________________________________
> mpls mailing list
> mpls@ietf.org
> https://www.ietf.org/mailman/listinfo/mpls
>

--f403043622c07c2f32055308d152
Content-Type: text/html; charset="UTF-8"
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<div dir=3D"ltr">Hi Loa,<div>I&#39;m not aware of any IPR other than IPR th=
at already has been disclosed.</div><div><br></div><div>Regards,</div><div>=
Greg</div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">O=
n Wed, Jun 28, 2017 at 3:35 AM, Loa Andersson <span dir=3D"ltr">&lt;<a href=
=3D"mailto:loa@pi.nu" target=3D"_blank">loa@pi.nu</a>&gt;</span> wrote:<br>=
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><br>
Working Group, authors,<br>
<br>
We have started to prepare the the draft-bryant-mpls-sfl-framewor<wbr>k for=
<br>
working group adoption, prior to the wgap we need to do an IPR poll.<br>
<br>
This mail starts this IPR poll.<br>
<br>
Are you aware of any IPR that applies to draft-bryant-mpls-sfl-framewor<wbr=
>k?<br>
<br>
If so, has this IPR been disclosed in compliance with IETF IPR rules<br>
(see RFCs 3979, 4879, 3669 and 5378 for more details).<br>
<br>
There are two IPR disclosures against draft-bryant-mpls-sfl-framewor<wbr>k.=
<br>
<br>
If you are listed as a document author or contributor please respond to<br>
this email regardless of whether or not you are aware of any relevant<br>
IPR. *The response needs to be sent to the MPLS WG mailing list.* The<br>
document will not advance to the next stage until a response has been<br>
received from each author and contributor.<br>
<br>
If you are on the MPLS WG email list but are not listed as an author or<br>
contributor, then please explicitly respond only if you are aware of any<br=
>
IPR that has not yet been disclosed in conformance with IETF rules.<br>
<br>
<br>
/Loa<br>
=C2=A0mpls wg co-chair<span class=3D"HOEnZb"><font color=3D"#888888"><br>
<br>
-- <br>
<br>
<br>
Loa Andersson=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 email: <a href=3D"mailto:loa@mail01.huawei.com" targe=
t=3D"_blank">loa@mail01.huawei.com</a><br>
Senior MPLS Expert=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
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--f403043622c07c2f32055308d152--


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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Wed, 28 Jun 2017 11:26:55 -0700
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--94eb2c124e9e335cf90553095489
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Dear All,
the draft considers use of p2mp BFD, a.k.a. BFD for multipoint networks, to
MPLS network. One of use cases - monitoring p2mp MPLS LSP to distribute
EVPN BUM traffic.

Appreciate your comments, questions, suggestions.

Regards,
Greg

---------- Forwarded message ----------
From: <internet-drafts@ietf.org>
Date: Wed, Jun 28, 2017 at 11:18 AM
Subject: New Version Notification for draft-mirsky-mpls-p2mp-bfd-01.txt
To: Gregory Mirsky <gregimirsky@gmail.com>



A new version of I-D, draft-mirsky-mpls-p2mp-bfd-01.txt
has been successfully submitted by Greg Mirsky and posted to the
IETF repository.

Name:           draft-mirsky-mpls-p2mp-bfd
Revision:       01
Title:          BFD for Multipoint Networks over Point-to-Multi-Point MPLS
LSP
Document date:  2017-06-28
Group:          Individual Submission
Pages:          6
URL:            https://www.ietf.org/internet-drafts/draft-mirsky-mpls-p2mp-
bfd-01.txt
Status:         https://datatracker.ietf.org/doc/draft-mirsky-mpls-p2mp-bfd/
Htmlized:       https://tools.ietf.org/html/draft-mirsky-mpls-p2mp-bfd-01
Htmlized:       https://datatracker.ietf.org/doc/html/draft-mirsky-mpls-
p2mp-bfd-01
Diff:           https://www.ietf.org/rfcdiff?url2=draft-mirsky-mpls-p2mp-
bfd-01

Abstract:
   This document describes procedures for using Bidirectional Forwarding
   Detection (BFD) for multipoint networks to detect data plane failures
   in Multiprotocol Label Switching (MPLS) point-to-multipoint (p2mp)
   Label Switched Paths (LSPs).  It also describes applicability of out-
   band solutions to bootstrap a BFD session in this environment.




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The IETF Secretariat

--94eb2c124e9e335cf90553095489
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<div dir=3D"ltr">Dear All,<div>the draft considers use of p2mp BFD, a.k.a. =
BFD for multipoint networks, to MPLS network. One of use cases - monitoring=
 p2mp MPLS LSP to distribute EVPN BUM traffic.</div><div><br></div><div>App=
reciate your comments, questions, suggestions.</div><div><br></div><div>Reg=
ards,</div><div>Greg</div><div><br></div><div><div class=3D"gmail_quote">--=
-------- Forwarded message ----------<br>From: <b class=3D"gmail_sendername=
"></b> <span dir=3D"ltr">&lt;<a href=3D"mailto:internet-drafts@ietf.org">in=
ternet-drafts@ietf.org</a>&gt;</span><br>Date: Wed, Jun 28, 2017 at 11:18 A=
M<br>Subject: New Version Notification for draft-mirsky-mpls-p2mp-bfd-01.tx=
t<br>To: Gregory Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com">gregim=
irsky@gmail.com</a>&gt;<br><br><br><br>
A new version of I-D, draft-mirsky-mpls-p2mp-bfd-01.<wbr>txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-mirsky-mpls-p2mp-bfd<br=
>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A001<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 BFD for Multipoint Networks over P=
oint-to-Multi-Point MPLS LSP<br>
Document date:=C2=A0 2017-06-28<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Individual Submission<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 6<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-mirsky-mpls-p2mp-bfd-01.txt" rel=3D"noreferrer" ta=
rget=3D"_blank">https://www.ietf.org/internet-<wbr>drafts/draft-mirsky-mpls=
-p2mp-<wbr>bfd-01.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-mirsky-mpls-p2mp-bfd/" rel=3D"noreferrer" target=3D"_blank"=
>https://datatracker.ietf.org/<wbr>doc/draft-mirsky-mpls-p2mp-<wbr>bfd/</a>=
<br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-mirsky-mpls-p2mp-bfd-01" rel=3D"noreferrer" target=3D"_blank">https:/=
/tools.ietf.org/html/<wbr>draft-mirsky-mpls-p2mp-bfd-01</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-mirsky-mpls-p2mp-bfd-01" rel=3D"noreferrer" target=3D"_blan=
k">https://datatracker.ietf.org/<wbr>doc/html/draft-mirsky-mpls-<wbr>p2mp-b=
fd-01</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-mirsky-mpls-p2mp-bfd-01" rel=3D"noreferrer" target=
=3D"_blank">https://www.ietf.org/rfcdiff?<wbr>url2=3Ddraft-mirsky-mpls-p2mp=
-<wbr>bfd-01</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes procedures for using Bidirectional For=
warding<br>
=C2=A0 =C2=A0Detection (BFD) for multipoint networks to detect data plane f=
ailures<br>
=C2=A0 =C2=A0in Multiprotocol Label Switching (MPLS) point-to-multipoint (p=
2mp)<br>
=C2=A0 =C2=A0Label Switched Paths (LSPs).=C2=A0 It also describes applicabi=
lity of out-<br>
=C2=A0 =C2=A0band solutions to bootstrap a BFD session in this environment.=
<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
</div><br></div></div>

--94eb2c124e9e335cf90553095489--


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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Wed, 28 Jun 2017 12:10:41 -0700
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Dear All,
the update addresses comment from Mankamana Mishra.
The draft discusses use of BFD in Demand mode over p2p MPLS LSP.
Your comments, questions, and suggestions are always welcome and greatly
appreciated.

Regards,
Greg

---------- Forwarded message ----------
From: <internet-drafts@ietf.org>
Date: Wed, Jun 28, 2017 at 12:05 PM
Subject: New Version Notification for draft-mirsky-bfd-mpls-demand-01.txt
To: Gregory Mirsky <gregimirsky@gmail.com>



A new version of I-D, draft-mirsky-bfd-mpls-demand-01.txt
has been successfully submitted by Greg Mirsky and posted to the
IETF repository.

Name:           draft-mirsky-bfd-mpls-demand
Revision:       01
Title:          BFD in Demand Mode over Point-to-Point MPLS LSP
Document date:  2017-06-28
Group:          Individual Submission
Pages:          5
URL:            https://www.ietf.org/internet-drafts/draft-mirsky-bfd-mpls-d
emand-01.txt
Status:         https://datatracker.ietf.org/doc/draft-mirsky-bfd-mpls-dema
nd/
Htmlized:       https://tools.ietf.org/html/draft-mirsky-bfd-mpls-demand-01
Htmlized:       https://datatracker.ietf.org/doc/html/draft-mirsky-bfd-mpls
-demand-01
Diff:           https://www.ietf.org/rfcdiff?url2=draft-mirsky-bfd-mpls-dem
and-01

Abstract:
   This document describes procedures for using Bidirectional Forwarding
   Detection (BFD) in Demand mode to detect data plane failures in
   Multiprotocol Label Switching (MPLS) point-to-point Label Switched
   Paths.




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The IETF Secretariat

--94eb2c115c10b9ba0b055309f00a
Content-Type: text/html; charset="UTF-8"
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<div dir=3D"ltr">Dear All,<div>the update addresses comment from Mankamana =
Mishra.</div><div>The draft discusses use of BFD in Demand mode over p2p MP=
LS LSP.</div><div>Your comments, questions, and suggestions are always welc=
ome and greatly appreciated.</div><div><br></div><div>Regards,</div><div>Gr=
eg</div><div><br><div class=3D"gmail_quote">---------- Forwarded message --=
--------<br>From: <b class=3D"gmail_sendername"></b> <span dir=3D"ltr">&lt;=
<a href=3D"mailto:internet-drafts@ietf.org" target=3D"_blank">internet-draf=
ts@ietf.org</a>&gt;</span><br>Date: Wed, Jun 28, 2017 at 12:05 PM<br>Subjec=
t: New Version Notification for draft-mirsky-bfd-mpls-demand-<wbr>01.txt<br=
>To: Gregory Mirsky &lt;<a href=3D"mailto:gregimirsky@gmail.com" target=3D"=
_blank">gregimirsky@gmail.com</a>&gt;<br><br><br><br>
A new version of I-D, draft-mirsky-bfd-mpls-demand-0<wbr>1.txt<br>
has been successfully submitted by Greg Mirsky and posted to the<br>
IETF repository.<br>
<br>
Name:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0draft-mirsky-bfd-mpls-demand<=
br>
Revision:=C2=A0 =C2=A0 =C2=A0 =C2=A001<br>
Title:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 BFD in Demand Mode over Point-to-P=
oint MPLS LSP<br>
Document date:=C2=A0 2017-06-28<br>
Group:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 Individual Submission<br>
Pages:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 5<br>
URL:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <a href=3D"https://www.ietf.o=
rg/internet-drafts/draft-mirsky-bfd-mpls-demand-01.txt" rel=3D"noreferrer" =
target=3D"_blank">https://www.ietf.org/internet-<wbr>drafts/draft-mirsky-bf=
d-mpls-d<wbr>emand-01.txt</a><br>
Status:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.iet=
f.org/doc/draft-mirsky-bfd-mpls-demand/" rel=3D"noreferrer" target=3D"_blan=
k">https://datatracker.ietf.org/<wbr>doc/draft-mirsky-bfd-mpls-dema<wbr>nd/=
</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://tools.ietf.org/html/=
draft-mirsky-bfd-mpls-demand-01" rel=3D"noreferrer" target=3D"_blank">https=
://tools.ietf.org/html/d<wbr>raft-mirsky-bfd-mpls-demand-01</a><br>
Htmlized:=C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://datatracker.ietf.org=
/doc/html/draft-mirsky-bfd-mpls-demand-01" rel=3D"noreferrer" target=3D"_bl=
ank">https://datatracker.ietf.org/<wbr>doc/html/draft-mirsky-bfd-mpls<wbr>-=
demand-01</a><br>
Diff:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<a href=3D"https://www.ietf.o=
rg/rfcdiff?url2=3Ddraft-mirsky-bfd-mpls-demand-01" rel=3D"noreferrer" targe=
t=3D"_blank">https://www.ietf.org/rfcdiff?<wbr>url2=3Ddraft-mirsky-bfd-mpls=
-dem<wbr>and-01</a><br>
<br>
Abstract:<br>
=C2=A0 =C2=A0This document describes procedures for using Bidirectional For=
warding<br>
=C2=A0 =C2=A0Detection (BFD) in Demand mode to detect data plane failures i=
n<br>
=C2=A0 =C2=A0Multiprotocol Label Switching (MPLS) point-to-point Label Swit=
ched<br>
=C2=A0 =C2=A0Paths.<br>
<br>
<br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
The IETF Secretariat<br>
<br>
</div><br></div></div>

--94eb2c115c10b9ba0b055309f00a--


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From: Mach Chen <mach.chen@huawei.com>
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CC: "draft-bryant-mpls-sfl-framework@ietf.org" <draft-bryant-mpls-sfl-framework@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>
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From: George Swallow <swallow.ietf@gmail.com>
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Date: Fri, 30 Jun 2017 16:52:27 -0400
Cc: "mpls@ietf.org" <mpls@ietf.org>, draft-bryant-mpls-sfl-framework@ietf.org,  "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, Stewart Bryant <stewart.bryant@gmail.com>
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To: Loa Andersson <loa@pi.nu>
Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/h0c882pNBIpWInuzP5frSJpaKTs>
Subject: Re: [mpls] IPR poll on draft-bryant-mpls-sfl-framework
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The previously disclosed IPR is all that I am aware of.

George=20

> On Jun 28, 2017, at 12:59 PM, Stewart Bryant <stewart.bryant@gmail.com> wr=
ote:
>=20
> The only IPR I am aware of is the IPR that has already been declared.
>=20
> - Stewart
>=20
>=20
>> On 28/06/2017 11:35, Loa Andersson wrote:
>>=20
>> Working Group, authors,
>>=20
>> We have started to prepare the the draft-bryant-mpls-sfl-framework for
>> working group adoption, prior to the wgap we need to do an IPR poll.
>>=20
>> This mail starts this IPR poll.
>>=20
>> Are you aware of any IPR that applies to draft-bryant-mpls-sfl-framework?=

>>=20
>> If so, has this IPR been disclosed in compliance with IETF IPR rules
>> (see RFCs 3979, 4879, 3669 and 5378 for more details).
>>=20
>> There are two IPR disclosures against draft-bryant-mpls-sfl-framework.
>>=20
>> If you are listed as a document author or contributor please respond to
>> this email regardless of whether or not you are aware of any relevant
>> IPR. *The response needs to be sent to the MPLS WG mailing list.* The
>> document will not advance to the next stage until a response has been
>> received from each author and contributor.
>>=20
>> If you are on the MPLS WG email list but are not listed as an author or
>> contributor, then please explicitly respond only if you are aware of any
>> IPR that has not yet been disclosed in conformance with IETF rules.
>>=20
>>=20
>> /Loa
>> mpls wg co-chair
>>=20
>=20


From nobody Fri Jun 30 14:04:23 2017
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Date: Fri, 30 Jun 2017 17:04:18 -0400
Cc: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>, draft-bryant-mpls-sfl-framework@ietf.org, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>
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To: Stewart Bryant <stewart.bryant@gmail.com>
Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/lz4v3ghtP-3Wt7c1oGN-IPSSodY>
Subject: Re: [mpls] IPR poll on draft-bryant-mpls-sfl-framework
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I am not aware of any IPR on the subject draft.=20

George=20

> On Jun 28, 2017, at 12:59 PM, Stewart Bryant <stewart.bryant@gmail.com> wr=
ote:
>=20
> The only IPR I am aware of is the IPR that has already been declared.
>=20
> - Stewart
>=20
>=20
>> On 28/06/2017 11:35, Loa Andersson wrote:
>>=20
>> Working Group, authors,
>>=20
>> We have started to prepare the the draft-bryant-mpls-sfl-framework for
>> working group adoption, prior to the wgap we need to do an IPR poll.
>>=20
>> This mail starts this IPR poll.
>>=20
>> Are you aware of any IPR that applies to draft-bryant-mpls-sfl-framework?=

>>=20
>> If so, has this IPR been disclosed in compliance with IETF IPR rules
>> (see RFCs 3979, 4879, 3669 and 5378 for more details).
>>=20
>> There are two IPR disclosures against draft-bryant-mpls-sfl-framework.
>>=20
>> If you are listed as a document author or contributor please respond to
>> this email regardless of whether or not you are aware of any relevant
>> IPR. *The response needs to be sent to the MPLS WG mailing list.* The
>> document will not advance to the next stage until a response has been
>> received from each author and contributor.
>>=20
>> If you are on the MPLS WG email list but are not listed as an author or
>> contributor, then please explicitly respond only if you are aware of any
>> IPR that has not yet been disclosed in conformance with IETF rules.
>>=20
>>=20
>> /Loa
>> mpls wg co-chair
>>=20
>=20

