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From: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
To: Linda Dunbar <linda.dunbar@huawei.com>
Thread-Topic: [OPSAWG] WG adoption poll for In-Situ OAM drafts
Thread-Index: AQHSezTO2Z3m8d6BQk+agt6tUV2LwqFR4BqAgAHzZAA=
Date: Wed, 1 Feb 2017 03:26:58 +0000
Message-ID: <315C1E75-9317-44B6-8C7C-1A945941A449@cisco.com>
References: <E69D723C-3D86-4D1E-BAC1-9B73CA870F3E@cisco.com> <4A95BA014132FF49AE685FAB4B9F17F659239563@SJCEML702-CHM.china.huawei.com>
In-Reply-To: <4A95BA014132FF49AE685FAB4B9F17F659239563@SJCEML702-CHM.china.huawei.com>
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Subject: Re: [OPSAWG] WG adoption poll for In-Situ OAM drafts
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--_000_315C1E75931744B68C7C1A945941A449ciscocom_--


From nobody Tue Feb  7 12:00:44 2017
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From: Warren Kumari <warren@kumari.net>
Date: Tue, 7 Feb 2017 15:00:02 -0500
Message-ID: <CAHw9_iKOqS7mQUDnrq6=78arFKGbdo_7otd718paFC6+v6_+7g@mail.gmail.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
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Subject: [OPSAWG] New OpsAWG chair volunteers...
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Hi all,

I will be stepping down as OpsAWG chair, and am looking for a replacement.
As you have probably seen, this is (generally) a very low drama, low
stress working group.

If you are interested / willing, please let me know (off-list). Of
course, if you have any questions, I'm happy to chat, etc.

W

-- 
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


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From: Dean Bogdanovic <ivandean@gmail.com>
In-Reply-To: <BBA82579FD347748BEADC4C445EA0F21A22B3591@NKGEML515-MBX.china.huawei.com>
Date: Wed, 8 Feb 2017 05:52:44 -0500
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References: <067201d27270$a08cc790$e1a656b0$@olddog.co.uk> <BBA82579FD347748BEADC4C445EA0F21A22A3DAE@NKGEML515-MBX.china.huawei.com> <BB2EE1A6-CAC0-49F5-9A0B-548B7A8E02DD@gmail.com> <BBA82579FD347748BEADC4C445EA0F21A22B3591@NKGEML515-MBX.china.huawei.com>
To: Tianran Zhou <zhoutianran@huawei.com>
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Cc: opsawg@ietf.org, draft-ietf-netmod-yang-model-classification@ietf.org, NetMod WG <netmod@ietf.org>
Subject: Re: [OPSAWG] [netmod] Question on draft-ietf-netmod-yang-model-classification
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> On Feb 7, 2017, at 8:45 PM, Tianran Zhou <zhoutianran@huawei.com> =
wrote:
>=20
> Hi Dean,
>=20
>=20
>> -----Original Message-----
>> From: Dean Bogdanovic [mailto:ivandean@gmail.com]
>> Sent: Monday, January 30, 2017 7:53 PM
>> To: Tianran Zhou
>> Cc: adrian@olddog.co.uk; netmod@ietf.org; opsawg@ietf.org;
>> draft-ietf-netmod-yang-model-classification@ietf.org
>> Subject: Re: [netmod] [OPSAWG] Question on
>> draft-ietf-netmod-yang-model-classification
>>=20
>>=20
>>> On Jan 23, 2017, at 9:32 AM, Tianran Zhou <zhoutianran@huawei.com> =
wrote:
>>>=20
>>> To add more comments:
>>>=20
>>> On the L2SM meeting, several people (4 or more) believed the 3 =
service
>> delivery model examples ([I-D.dhjain-bess-bgp-l3vpn-yang],
>> [I-D.ietf-bess-l2vpn-yang] and [I-D.ietf-bess-evpn-yang]) are =
actually
>> device models.
>>>=20
>>> I think both of the two I-Ds
>> ([draft-ietf-netmod-yang-model-classification] and
>> [draft-wu-opsawg-service-model-explained]) can check if those YANG =
models
>> are device models or service models.
>>=20
>> The idea is that the classification drafts will provide guidelines =
for the
>> authors to do their own classification. As mentioned in my previous =
email,
>> the only people who will be able to do the right classification, are =
the
>> module authors.
>=20
> But you list some examples in each category. If those example modules =
are actually not fit in, I think it will mislead and confuse the =
readers.

Good point.
>=20
>>=20
>> Please see I=E2=80=99m using distinction between module and model. =
Model can consist
>> of multiple modules and in models you can get classification =
ambiguity.
>> Modules are much more clear to classify.
>=20
> Do you mean usually it's hard to classify the "model"? Because it may =
contain many "modules" for different use.

Yes.

Dean

>=20
>> Dean
>>=20
>>>=20
>>> Regards,
>>> Tianran
>>>=20
>>>> -----Original Message-----
>>>> From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of Adrian
>>>> Farrel
>>>> Sent: Friday, January 20, 2017 12:25 AM
>>>> To: netmod@ietf.org
>>>> Cc: opsawg@ietf.org;
>>>> draft-ietf-netmod-yang-model-classification@ietf.org
>>>> Subject: [OPSAWG] Question on
>>>> draft-ietf-netmod-yang-model-classification
>>>>=20
>>>> Hi,
>>>>=20
>>>> We've been trying to ensure that
>>>> draft-wu-opsawg-service-model-explained
>>>> is consistent with the latest version of
>>>> draft-ietf-netmod-yang-model-classification. In discussions with
>>>> Tianran a question has come up.
>>>>=20
>>>> In section 2 you have a nice definition of Network Service YANG
>>>> Modules and this definition maps nicely to our definition of =
"service
>>>> delivery models".
>>>> Furthermore, your figure 1 shows Network Service YANG Modules on =
the
>>>> interface between OSS/BSS and the various network services.
>>>>=20
>>>> We have further defined "customer service models" at a higher layer =
still.
>>>> That is, on the interface to the customer. This (of course?) =
assumes
>>>> that the OSS/BSS is not customer code :-)
>>>>=20
>>>> However, your discussion of Network Service YANG Modules in section
>>>> 2.1 seems slightly at odds, although this may be just ambiguity.
>>>>=20
>>>> For example, when you say, "Network Service YANG Modules describe =
the
>>>> characteristics of a service, as agreed upon with consumers of that
>> service,"
>>>> this is not the same as, "This model is used in the discussion
>>>> between a customer and a service provide to describe the =
characteristics
>> of a service."
>>>> That is, the former case could be arrived at after processing based
>>>> on the latter case - processing that we have called "service
>>>> orchestration" but might (of course) be what leads to the operator =
poking
>> the OSS/BSS.
>>>>=20
>>>> This might all be fine and good, but later in the same section you
>>>> say "Network Service YANG Modules define service models to be
>>>> consumed by external systems.
>>>> These modules are commonly designed, developed and deployed by
>>>> network infrastructure teams." And there you introduce two terms =
that
>>>> are previously undefined and only server to add ambiguity. =
Specifically
>> "external to what?"
>>>> I could make and argument that the OSS is developed and deployed by
>>>> network infrastructure teams, ad also that the OSS is external to =
the
>> network itself.
>>>>=20
>>>> And, in between these two quoted pieces of text, you have...
>>>>=20
>>>>  As an example, the Network Service YANG Module defined in
>>>>  [YANG-Data-Model-for-L3VPN-service-delivery] provides an abstract
>>>>  model for Layer 3 IP VPN service configuration.
>>>>=20
>>>> Per my other email, this reference needs to be fixed. But I =
struggle
>>>> to see the L3SM module as consistent with your figure. It may or =
may
>>>> not be consistent with your text dependent on the interpretation.
>>>>=20
>>>> In draft-wu-opsawg-service-model-explained Figure 4 we have tried =
to
>>>> show how we (the authors) think L3SM fits into your classification.
>>>> Here we place L3SM further up the layering stack.
>>>>=20
>>>> [Apologies for not spotting this sooner. The citation
>>>> "YANG-Data-Model-for-L3VPN-service-delivery" includes the term
>>>> "service delivery" which I took to imply a different module.]
>>>>=20
>>>> Thanks,
>>>> Adrian
>>>>=20
>>>> _______________________________________________
>>>> OPSAWG mailing list
>>>> OPSAWG@ietf.org
>>>> https://www.ietf.org/mailman/listinfo/opsawg
>>>=20
>>> _______________________________________________
>>> netmod mailing list
>>> netmod@ietf.org
>>> https://www.ietf.org/mailman/listinfo/netmod
>=20


From nobody Wed Feb  8 08:04:35 2017
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From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "'Dean Bogdanovic'" <dean@voltanet.io>
References: <067201d27270$a08cc790$e1a656b0$@olddog.co.uk> <4248688C-E0AC-4302-A281-0622D824FA4D@voltanet.io>
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Date: Wed, 8 Feb 2017 16:04:19 -0000
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Cc: opsawg@ietf.org, draft-ietf-netmod-yang-model-classification@ietf.org, netmod@ietf.org
Subject: Re: [OPSAWG] Question on draft-ietf-netmod-yang-model-classification
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Hi Dean,

I've been processing your response and the continuing thread with you =
and Tianran.

> > We've been trying to ensure that =
draft-wu-opsawg-service-model-explained is
> > consistent with the latest version of
> > draft-ietf-netmod-yang-model-classification. In discussions with =
Tianran a
> > question has come up.
> >
> > In section 2 you have a nice definition of Network Service YANG =
Modules and
> > this definition maps nicely to our definition of "service delivery =
models".
> > Furthermore, your figure 1 shows Network Service YANG Modules on the
> > interface between OSS/BSS and the various network services.
> >
> > We have further defined "customer service models" at a higher layer =
still. That
> > is, on the interface to the customer. This (of course?) assumes that =
the
> > OSS/BSS is not customer code :-)
> >
> > However, your discussion of Network Service YANG Modules in section =
2.1
> > seems slightly at odds, although this may be just ambiguity.
> >
> > For example, when you say, "Network Service YANG Modules describe =
the
> > characteristics of a service, as agreed upon with consumers of that =
service,"
> > this is not the same as, "This model is used in the discussion =
between a
> > customer and a service provide to describe the characteristics of a =
service."
> > That is, the former case could be arrived at after processing based =
on the
> > latter case - processing that we have called "service orchestration" =
but might
> > (of course) be what leads to the operator poking the OSS/BSS.
>=20
> Adrian, I can see the ambiguity. The point of service module is to be =
consumed by
> the customer and there can be some modifications of the service module =
to
> adapt to the customer specifics.

So far I agree with your email and therefore not with your document. The =
OSS/BSS is not, IMHO, a tool used by the customer.

Please see Figure 3 in draft-wu-opsawg-service-model-explained-05.txt =
that shows the customer distinct from the OSS/BSS.

> > This might all be fine and good, but later in the same section you =
say "Network
> > Service YANG Modules define service models to be consumed by =
external
> > systems.
> > These modules are commonly designed, developed and deployed by =
network
> > infrastructure teams." And there you introduce two terms that are =
previously
> > undefined and only server to add ambiguity. Specifically "external =
to what?" I
> > could make and argument that the OSS is developed and deployed by =
network
> > infrastructure teams, ad also that the OSS is external to the =
network itself.
>=20
> Agree that external systems are not defined and this text has to be =
clarified. The
> external systems can be OSS and BSS.

If we relabelled our "Service Delivery Model" as "Network Service Model" =
would that be consistent?

That is, in any case, to say that the OSS/BSS does not talk directly to =
the devices.

> > And, in between these two quoted pieces of text, you have...
> >
> >   As an example, the Network Service YANG Module defined in
> >   [YANG-Data-Model-for-L3VPN-service-delivery] provides an abstract
> >   model for Layer 3 IP VPN service configuration.
>=20
> My question is where do you see the L3SM model
> above or below OSS?

Well, look at the figure in section 5 of =
draft-ietf-l3sm-l3vpn-service-model-19.txt

It is logically higher, but OSS/BSS are not "in the flow" as they are =
legacy components in a softwarized world.
However, per our pictures, OSS/BSS should use the same set of =
models/modules as used by the "service orchestrator".

> Because there are some nuances in the service module, but at the end =
we
> decided not to do sub classification

Mutter, mutter.
In the document, you talk about "network service modules" not "service =
modules" and only trim to "service module" in the text implying that you =
always actually mean "network service module".

> one is the business and one technical service.
>=20
> When i read the YANG-Data-Model-for-L3VPN-service-delivery, it looked =
to me
> much more like a technical model, then the business model, as =
didn=E2=80=99t see SLA
> definitions to track the business parameters of the service use.

It is certainly not a business model and does not include SLAs. Other =
people have far more experience working on these things (TMF, MEF, ...) =
and it is not an IETF core competence. Our intention is that our module =
can be augmented or accompanied by other modules in order to create a =
business model, acknowledging that commercial details (even including =
SLAs) will vary from one operator to another, but that the core =
technical description of the service can be (and, it turns out, is) =
common across multiple providers.

We even wrote text in Section 5 of =
draft-wu-opsawg-service-model-explained to help with this.

> > Per my other email, this reference needs to be fixed. But I struggle =
to see the
> > L3SM module as consistent with your figure. It may or may not be =
consistent
> > with your text dependent on the interpretation.
>=20
> Sure, we can fix that reference, but the authors of L3SM module should =
do their
> own module classification, as they are the only ones that know the =
intent of the
> module.

That is fine. They can classify it, and they can use your classification =
system, but only if it can be understood, is meaningful, and fits what =
they are trying to achieve :-)

Your text currently says
   As an example, the Network Service YANG Module defined in
   [YANG-Data-Model-for-L3VPN-service-delivery] provides an abstract
   model for Layer 3 IP VPN service configuration.

Your text and figures show "Network Service YANG Module" as being =
something that the OSS/BSS talks (presumably toward a network =
orchestrator?). Thus the L3SM module does not fit here. And that is why =
we wrote draft-wu-opsawg-service-model-explained and included Figure 4 =
to augment your figure.

And *finally*, Tianran is concerned that there may be confusion arising =
from whether the module we reference are "Network service modules", =
"service delivery modules", "network configuration modules", "network =
element modules", or "device configuration modules". So many terms, but =
presumably these modules don't fit into all of the categories! The list =
is:

[I-D.dhjain-bess-bgp-l3vpn-yang]
[I-D.ietf-bess-l2vpn-yang]
[I-D.ietf-bess-evpn-yang]

I wonder what type of module you think these are.

Cheers,
Adrian




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From: "Carl Moberg (camoberg)" <camoberg@cisco.com>
To: "adrian@olddog.co.uk" <adrian@olddog.co.uk>
Thread-Topic: Question on draft-ietf-netmod-yang-model-classification
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Date: Wed, 8 Feb 2017 16:47:46 +0000
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References: <067201d27270$a08cc790$e1a656b0$@olddog.co.uk> <4248688C-E0AC-4302-A281-0622D824FA4D@voltanet.io> <06fa01d28225$05a25050$10e6f0f0$@olddog.co.uk>
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Cc: "opsawg@ietf.org" <opsawg@ietf.org>, "draft-ietf-netmod-yang-model-classification@ietf.org" <draft-ietf-netmod-yang-model-classification@ietf.org>, "netmod@ietf.org" <netmod@ietf.org>, Dean Bogdanovic <dean@voltanet.io>
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To: "opsawg@ietf.org" <opsawg@ietf.org>
From: Eliot Lear <lear@cisco.com>
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Date: Thu, 9 Feb 2017 16:47:38 +0100
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Subject: [OPSAWG] MUD: open issue: controller v. my-controller
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From: Eliot Lear <lear@cisco.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
Message-ID: <972694da-cb50-b41b-2344-2b34fd0128dc@cisco.com>
Subject: MUD: open issue: controller v. my-controller

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Hi everyone,

I am getting ready to rev the draft and a few issues have come up as we
get a little more experience.  Here's one to chew on.  Currently the
draft specifies a "controller" class that is a URI.  That URI could be a
URN that describes standard behavior or it could just be an open class.=20
The problem with the open class is that the administrator really won't
understand what it's for unless the URI has some descriptive name.=20
Still, having standard classes and behaviors is useful, and having a
flexible controller approach is useful if we can sort the UI issues.

In the department of making it easier on the administrator, however,
there is already a display element for a device.  One thing we can do is
allow for a class "my-controller", where devices register (or are
registered) out of band for a given type of device.  Here the UI
elements are simpler.  If someone goes and looks at all devices that are
associated with a MUD-URI, they can then just also see one place as to
what controllers are associated with them.  This is a bit of a general ca=
se.

My first proposal is to therefore re-add (it was in there) the
"my-controller" empty element into the YANG model.  This is easy enough
and costs almost nothing, and makes the UI much simpler.

My second proposal is not to remove the "controller" component, but to
modify it to be a grouping of some form that consists of a URI, much as
it is today, and a display element associated with the URI.  This will
allow for the standard behaviors already defined as well as some
non-standard, as we gain more experience.

Comments/concerns?

Eliot



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To: "opsawg@ietf.org" <opsawg@ietf.org>
References: <972694da-cb50-b41b-2344-2b34fd0128dc@cisco.com>
From: Eliot Lear <lear@cisco.com>
Message-ID: <3c62636d-aa30-e138-2de7-b6259b40a536@cisco.com>
Date: Fri, 10 Feb 2017 14:55:25 +0100
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Subject: Re: [OPSAWG] MUD: open issue: controller v. my-controller
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From: Eliot Lear <lear@cisco.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
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Subject: Re: [OPSAWG] MUD: open issue: controller v. my-controller
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Well, foist on my own petard.  We've run into a small issue with the
following:


On 2/9/17 4:47 PM, Eliot Lear wrote:
> My second proposal is not to remove the "controller" component, but to
> modify it to be a grouping of some form that consists of a URI, much as=

> it is today, and a display element associated with the URI.  This will
> allow for the standard behaviors already defined as well as some
> non-standard, as we gain more experience.
>

This runs us into internationalization issues.  Therefore that
documentation must be external, and "controller" alone should be used
with care.  I've added some text around that for the next version.

Eliot


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From nobody Sun Feb 12 19:35:44 2017
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From: Tianran Zhou <zhoutianran@huawei.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
Thread-Topic: WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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Date: Mon, 13 Feb 2017 03:36:32 +0000
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Dear OPSAWG,

In Seoul, we got enough interest and positive response on this IPFIX IE ext=
ension draft.
By the authors' request, this email starts a formal poll. The chairs would =
like to know if the WG participants agree that the following document shoul=
d be adopted as a WG document in OPSAWG.

Export BGP community information in IP Flow Information Export (IPFIX)
https://tools.ietf.org/html/draft-li-opsawg-ipfix-bgp-community-02

The adoption poll will take two weeks. Please let us know your opinion by F=
eb 27. It would also be good to hear who is willing to review and/or implem=
ent or deploy the extension described in the document.

Since we already found that the majority of the f2f participants at our IET=
F97 session like this idea, please do speak up now if you do not agree or h=
ave serious objections (with explanation of course).

Regards,
Tianran


From nobody Sun Feb 12 21:41:25 2017
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--=====_003_next=====--

--=====_002_next=====--

--=====_001_next=====--



From nobody Sun Feb 12 23:32:09 2017
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From: Duzongpeng <duzongpeng@huawei.com>
To: Tianran Zhou <zhoutianran@huawei.com>, "opsawg@ietf.org" <opsawg@ietf.org>
Thread-Topic: WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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Subject: Re: [OPSAWG] WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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Hi, all

I support the adoption.=20

Extension to IPFIX information model to carry the BGP community information=
 is helpful.

Best Regards
Zongpeng Du

-----Original Message-----
From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of Tianran Zhou
Sent: Monday, February 13, 2017 11:37 AM
To: opsawg@ietf.org
Cc: opsawg-chairs@ietf.org
Subject: [OPSAWG] WG adoption poll for draft-li-opsawg-ipfix-bgp-community-=
02

Dear OPSAWG,

In Seoul, we got enough interest and positive response on this IPFIX IE ext=
ension draft.
By the authors' request, this email starts a formal poll. The chairs would =
like to know if the WG participants agree that the following document shoul=
d be adopted as a WG document in OPSAWG.

Export BGP community information in IP Flow Information Export (IPFIX)
https://tools.ietf.org/html/draft-li-opsawg-ipfix-bgp-community-02

The adoption poll will take two weeks. Please let us know your opinion by F=
eb 27. It would also be good to hear who is willing to review and/or implem=
ent or deploy the extension described in the document.

Since we already found that the majority of the f2f participants at our IET=
F97 session like this idea, please do speak up now if you do not agree or h=
ave serious objections (with explanation of course).

Regards,
Tianran

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


From nobody Mon Feb 13 06:14:44 2017
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From: Tianran Zhou <zhoutianran@huawei.com>
To: opsawg <opsawg@ietf.org>
Thread-Topic: [IPFIX] FW: WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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--_000_etPan58a1bd44225f40e641biPhone6_
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<div><br>
Sent&nbsp;from&nbsp;HUAWEI&nbsp;AnyOffice</div>
<div name=3D"x_AnyOffice-Background-Image" style=3D"border-top:1px solid #B=
5C4DF; font-size:14px; line-height:20px; padding:8px">
<div><b>=B7=A2=BC=FE=C8=CB=A3=BA </b>PJ Aitken</div>
<div><b>=CA=D5=BC=FE=C8=CB=A3=BA </b>=D6=DC=CC=EC=C8=BB; IPFIX@ietf.org; </=
div>
<div><b>=B3=AD=CB=CD=A3=BA </b>draft-li-opsawg-ipfix-bgp-community.authors@=
ietf.org; </div>
<div><b>=D6=F7=CC=E2=A3=BA </b>Re: [IPFIX] FW: WG adoption poll for draft-l=
i-opsawg-ipfix-bgp-community-02</div>
<div><b>=CA=B1=BC=E4=A3=BA </b>2017-02-13 20:41:17</div>
<div><br>
<br>
</div>
</div>
</div>
<font size=3D"2"><span style=3D"font-size:10pt;">
<div class=3D"PlainText">Per section 6 of RFC7012, new IPFIX Information El=
ements can be added by
<br>
direct application to IANA; there's no need for a draft or RFC.<br>
<br>
However, the introduction and examples may be valuable, especially for <br>
BGP experts who are less familiar with IPFIX.<br>
<br>
I've no objection to adopting the draft.<br>
<br>
P.<br>
<br>
<br>
On 13/02/17 03:49, Tianran Zhou wrote:<br>
&gt; Dear IPFIX,<br>
&gt;<br>
&gt; Since the IPFIX WG is concluded, this IE extension draft is processed =
now in OPSAWG.<br>
&gt; Thanks very much for the previous comments and discussions on this dra=
ft in this mailing list.<br>
&gt; Now the OPSAWG is polling for adoption of this I-D. I sincerely apprec=
iate your opinion and review.<br>
&gt;<br>
&gt; Best Regards,<br>
&gt; Tianran Zhou<br>
&gt;<br>
&gt; -----Original Message-----<br>
&gt; From: OPSAWG [<a href=3D"mailto:opsawg-bounces@ietf.org">mailto:opsawg=
-bounces@ietf.org</a>] On Behalf Of Tianran Zhou<br>
&gt; Sent: Monday, February 13, 2017 11:37 AM<br>
&gt; To: opsawg@ietf.org<br>
&gt; Cc: opsawg-chairs@ietf.org<br>
&gt; Subject: [OPSAWG] WG adoption poll for draft-li-opsawg-ipfix-bgp-commu=
nity-02<br>
&gt;<br>
&gt; Dear OPSAWG,<br>
&gt;<br>
&gt; In Seoul, we got enough interest and positive response on this IPFIX I=
E extension draft.<br>
&gt; By the authors' request, this email starts a formal poll. The chairs w=
ould like to know if the WG participants agree that the following document =
should be adopted as a WG document in OPSAWG.<br>
&gt;<br>
&gt; Export BGP community information in IP Flow Information Export (IPFIX)=
<br>
&gt; <a href=3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__tool=
s.ietf.org_html_draft-2Dli-2Dopsawg-2Dipfix-2Dbgp-2Dcommunity-2D02&amp;d=3D=
DwICAg&amp;c=3DIL_XqQWOjubgfqINi2jTzg&amp;r=3DXx9729xYDYoCgBDdcp1FKt5PyYd1T=
CoXNKhyPY8CFp8&amp;m=3De8U_gPwC_H2I5yK7XMm7IZ29PU1rg0wNbPsJvDG6RDI&amp;s=3D=
xYsTrrFuD2dlfxdp0X3pcPMw4vuozglfpGLv4A5TKNw&amp;e=3D">
https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__tools.ietf.org_html_=
draft-2Dli-2Dopsawg-2Dipfix-2Dbgp-2Dcommunity-2D02&amp;d=3DDwICAg&amp;c=3DI=
L_XqQWOjubgfqINi2jTzg&amp;r=3DXx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&a=
mp;m=3De8U_gPwC_H2I5yK7XMm7IZ29PU1rg0wNbPsJvDG6RDI&amp;s=3DxYsTrrFuD2dlfxdp=
0X3pcPMw4vuozglfpGLv4A5TKNw&amp;e=3D</a><br>
&gt;<br>
&gt; The adoption poll will take two weeks. Please let us know your opinion=
 by Feb 27. It would also be good to hear who is willing to review and/or i=
mplement or deploy the extension described in the document.<br>
&gt;<br>
&gt; Since we already found that the majority of the f2f participants at ou=
r IETF97 session like this idea, please do speak up now if you do not agree=
 or have serious objections (with explanation of course).<br>
&gt;<br>
&gt; Regards,<br>
&gt; Tianran<br>
&gt;<br>
&gt; _______________________________________________<br>
&gt; OPSAWG mailing list<br>
&gt; OPSAWG@ietf.org<br>
&gt; <a href=3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.=
ietf.org_mailman_listinfo_opsawg&amp;d=3DDwICAg&amp;c=3DIL_XqQWOjubgfqINi2j=
Tzg&amp;r=3DXx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&amp;m=3De8U_gPwC_H2=
I5yK7XMm7IZ29PU1rg0wNbPsJvDG6RDI&amp;s=3DlUyPAeQ2BUnIuqL4qUS1w45CNe3JixjYQz=
YQVN4Y3q4&amp;e=3D">
https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.ietf.org_mailman=
_listinfo_opsawg&amp;d=3DDwICAg&amp;c=3DIL_XqQWOjubgfqINi2jTzg&amp;r=3DXx97=
29xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&amp;m=3De8U_gPwC_H2I5yK7XMm7IZ29PU1=
rg0wNbPsJvDG6RDI&amp;s=3DlUyPAeQ2BUnIuqL4qUS1w45CNe3JixjYQzYQVN4Y3q4&amp;e=
=3D</a><br>
&gt;<br>
&gt; _______________________________________________<br>
&gt; IPFIX mailing list<br>
&gt; IPFIX@ietf.org<br>
&gt; <a href=3D"https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.=
ietf.org_mailman_listinfo_ipfix&amp;d=3DDwICAg&amp;c=3DIL_XqQWOjubgfqINi2jT=
zg&amp;r=3DXx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&amp;m=3De8U_gPwC_H2I=
5yK7XMm7IZ29PU1rg0wNbPsJvDG6RDI&amp;s=3DlOUrCUQVhsdnIWvSTJycjdy-0V6yZZ9NvjU=
2N-wZn18&amp;e=3D">
https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__www.ietf.org_mailman=
_listinfo_ipfix&amp;d=3DDwICAg&amp;c=3DIL_XqQWOjubgfqINi2jTzg&amp;r=3DXx972=
9xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&amp;m=3De8U_gPwC_H2I5yK7XMm7IZ29PU1r=
g0wNbPsJvDG6RDI&amp;s=3DlOUrCUQVhsdnIWvSTJycjdy-0V6yZZ9NvjU2N-wZn18&amp;e=
=3D</a><br>
<br>
</div>
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--_000_etPan58a1bd44225f40e641biPhone6_--


From nobody Mon Feb 13 22:39:31 2017
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From: "Yu Fu" <fuyu@cnnic.cn>
To: "'Tianran Zhou'" <zhoutianran@huawei.com>, <opsawg@ietf.org>
References: <BBA82579FD347748BEADC4C445EA0F21A22B8B05@NKGEML515-MBX.china.huawei.com>
In-Reply-To: <BBA82579FD347748BEADC4C445EA0F21A22B8B05@NKGEML515-MBX.china.huawei.com>
Date: Tue, 14 Feb 2017 14:32:15 +0800
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Archived-At: <https://mailarchive.ietf.org/arch/msg/opsawg/uCn_y2jWutHuM6p8uFKdIy35EOI>
Cc: opsawg-chairs@ietf.org
Subject: Re: [OPSAWG] WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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Hi, all
BGP community information plays an important role nowadays. After reading
this draft, I think the information element provided can solve some problems
to some degree.
I support for the work group document adoption.

Cheers
Yu

-----Original Message-----
From: opsawg-bounces@ietf.org [mailto:opsawg-bounces@ietf.org] On Behalf Of
Tianran Zhou
Sent: Monday, February 13, 2017 11:37 AM
To: opsawg@ietf.org
Cc: opsawg-chairs@ietf.org
Subject: [OPSAWG] WG adoption poll for
draft-li-opsawg-ipfix-bgp-community-02

Dear OPSAWG,

In Seoul, we got enough interest and positive response on this IPFIX IE
extension draft.
By the authors' request, this email starts a formal poll. The chairs would
like to know if the WG participants agree that the following document should
be adopted as a WG document in OPSAWG.

Export BGP community information in IP Flow Information Export (IPFIX)
https://tools.ietf.org/html/draft-li-opsawg-ipfix-bgp-community-02

The adoption poll will take two weeks. Please let us know your opinion by
Feb 27. It would also be good to hear who is willing to review and/or
implement or deploy the extension described in the document.

Since we already found that the majority of the f2f participants at our
IETF97 session like this idea, please do speak up now if you do not agree or
have serious objections (with explanation of course).

Regards,
Tianran

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



From nobody Mon Feb 13 23:33:21 2017
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Date: Tue, 14 Feb 2017 15:34:38 +0800
From: "lizhenqiang@chinamobile.com" <lizhenqiang@chinamobile.com>
To: "PJ Aitken" <pjaitken@brocade.com>, Zhoutianran <zhoutianran@huawei.com>,  "ipfix@ietf.org" <IPFIX@ietf.org>, opsawg <opsawg@ietf.org>
References: <BBA82579FD347748BEADC4C445EA0F21A22B8B2B@NKGEML515-MBX.china.huawei.com>,  <f2921126-418f-de35-cbec-be1605be4663@brocade.com>
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Cc: "draft-li-opsawg-ipfix-bgp-community.authors@ietf.org" <draft-li-opsawg-ipfix-bgp-community.authors@ietf.org>
Subject: Re: [OPSAWG] [IPFIX] FW: WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charse=
t=3DISO-8859-1"><style>body { line-height: 1.5; }blockquote { margin-top: =
0px; margin-bottom: 0px; margin-left: 0.5em; }body { font-size: 10.5pt; fo=
nt-family: ????; color: rgb(0, 0, 0); line-height: 1.5; }</style></head><b=
ody>=0A<div><span></span>I support the adoption of this draft as a co-auth=
or. The requirement comes from the field network.</div>=0A<div><br></div><=
div>Best Regards</div><hr style=3D"width: 210px; height: 1px;" color=3D"#b=
5c4df" size=3D"1" align=3D"left">=0A<div><span><div style=3D"MARGIN: 10px;=
 FONT-FAMILY: verdana; FONT-SIZE: 10pt"><div>lizhenqiang@chinamobile.com</=
div></div></span></div>=0A<blockquote style=3D"margin-top: 0px; margin-bot=
tom: 0px; margin-left: 0.5em;"><div>&nbsp;</div><div style=3D"border:none;=
border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><div style=3D"PA=
DDING-RIGHT: 8px; PADDING-LEFT: 8px; FONT-SIZE: 12px;FONT-FAMILY:tahoma;CO=
LOR:#000000; BACKGROUND: #efefef; PADDING-BOTTOM: 8px; PADDING-TOP: 8px"><=
div><b>From:</b>&nbsp;<a href=3D"mailto:pjaitken@brocade.com">PJ Aitken</a=
></div><div><b>Date:</b>&nbsp;2017-02-13&nbsp;20:39</div><div><b>To:</b>&n=
bsp;<a href=3D"mailto:zhoutianran@huawei.com">Tianran Zhou</a>; <a href=3D=
"mailto:IPFIX@ietf.org">IPFIX@ietf.org</a></div><div><b>CC:</b>&nbsp;<a hr=
ef=3D"mailto:draft-li-opsawg-ipfix-bgp-community.authors@ietf.org">draft-l=
i-opsawg-ipfix-bgp-community.authors@ietf.org</a></div><div><b>Subject:</b=
>&nbsp;Re: [IPFIX] FW: WG adoption poll for draft-li-opsawg-ipfix-bgp-comm=
unity-02</div></div></div><div><div>Per section 6 of RFC7012, new IPFIX In=
formation Elements can be added by </div>=0A<div>direct application to IAN=
A; there's no need for a draft or RFC.</div>=0A<div>&nbsp;</div>=0A<div>Ho=
wever, the introduction and examples may be valuable, especially for </div=
>=0A<div>BGP experts who are less familiar with IPFIX.</div>=0A<div>&nbsp;=
</div>=0A<div>I've no objection to adopting the draft.</div>=0A<div>&nbsp;=
</div>=0A<div>P.</div>=0A<div>&nbsp;</div>=0A<div>&nbsp;</div>=0A<div>On 1=
3/02/17 03:49, Tianran Zhou wrote:</div>=0A<div>&gt; Dear IPFIX,</div>=0A<=
div>&gt;</div>=0A<div>&gt; Since the IPFIX WG is concluded, this IE extens=
ion draft is processed now in OPSAWG.</div>=0A<div>&gt; Thanks very much f=
or the previous comments and discussions on this draft in this mailing lis=
t.</div>=0A<div>&gt; Now the OPSAWG is polling for adoption of this I-D. I=
 sincerely appreciate your opinion and review.</div>=0A<div>&gt;</div>=0A<=
div>&gt; Best Regards,</div>=0A<div>&gt; Tianran Zhou</div>=0A<div>&gt;</d=
iv>=0A<div>&gt; -----Original Message-----</div>=0A<div>&gt; From: OPSAWG =
[mailto:opsawg-bounces@ietf.org] On Behalf Of Tianran Zhou</div>=0A<div>&g=
t; Sent: Monday, February 13, 2017 11:37 AM</div>=0A<div>&gt; To: opsawg@i=
etf.org</div>=0A<div>&gt; Cc: opsawg-chairs@ietf.org</div>=0A<div>&gt; Sub=
ject: [OPSAWG] WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02=
</div>=0A<div>&gt;</div>=0A<div>&gt; Dear OPSAWG,</div>=0A<div>&gt;</div>=
=0A<div>&gt; In Seoul, we got enough interest and positive response on thi=
s IPFIX IE extension draft.</div>=0A<div>&gt; By the authors' request, thi=
s email starts a formal poll. The chairs would like to know if the WG part=
icipants agree that the following document should be adopted as a WG docum=
ent in OPSAWG.</div>=0A<div>&gt;</div>=0A<div>&gt; Export BGP community in=
formation in IP Flow Information Export (IPFIX)</div>=0A<div>&gt; https://=
urldefense.proofpoint.com/v2/url?u=3Dhttps-3A__tools.ietf.org_html_draft-2=
Dli-2Dopsawg-2Dipfix-2Dbgp-2Dcommunity-2D02&amp;d=3DDwICAg&amp;c=3DIL_XqQW=
OjubgfqINi2jTzg&amp;r=3DXx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&amp;m=
=3De8U_gPwC_H2I5yK7XMm7IZ29PU1rg0wNbPsJvDG6RDI&amp;s=3DxYsTrrFuD2dlfxdp0X3=
pcPMw4vuozglfpGLv4A5TKNw&amp;e=3D</div>=0A<div>&gt;</div>=0A<div>&gt; The =
adoption poll will take two weeks. Please let us know your opinion by Feb =
27. It would also be good to hear who is willing to review and/or implemen=
t or deploy the extension described in the document.</div>=0A<div>&gt;</di=
v>=0A<div>&gt; Since we already found that the majority of the f2f partici=
pants at our IETF97 session like this idea, please do speak up now if you =
do not agree or have serious objections (with explanation of course).</div=
>=0A<div>&gt;</div>=0A<div>&gt; Regards,</div>=0A<div>&gt; Tianran</div>=
=0A<div>&gt;</div>=0A<div>&gt; ___________________________________________=
____</div>=0A<div>&gt; OPSAWG mailing list</div>=0A<div>&gt; OPSAWG@ietf.o=
rg</div>=0A<div>&gt; https://urldefense.proofpoint.com/v2/url?u=3Dhttps-3A=
__www.ietf.org_mailman_listinfo_opsawg&amp;d=3DDwICAg&amp;c=3DIL_XqQWOjubg=
fqINi2jTzg&amp;r=3DXx9729xYDYoCgBDdcp1FKt5PyYd1TCoXNKhyPY8CFp8&amp;m=3De8U=
_gPwC_H2I5yK7XMm7IZ29PU1rg0wNbPsJvDG6RDI&amp;s=3DlUyPAeQ2BUnIuqL4qUS1w45CN=
e3JixjYQzYQVN4Y3q4&amp;e=3D</div>=0A<div>&gt;</div>=0A<div>&gt; __________=
_____________________________________</div>=0A<div>&gt; IPFIX mailing list=
</div>=0A<div>&gt; IPFIX@ietf.org</div>=0A<div>&gt; https://urldefense.pro=
ofpoint.com/v2/url?u=3Dhttps-3A__www.ietf.org_mailman_listinfo_ipfix&amp;d=
=3DDwICAg&amp;c=3DIL_XqQWOjubgfqINi2jTzg&amp;r=3DXx9729xYDYoCgBDdcp1FKt5Py=
Yd1TCoXNKhyPY8CFp8&amp;m=3De8U_gPwC_H2I5yK7XMm7IZ29PU1rg0wNbPsJvDG6RDI&amp=
;s=3DlOUrCUQVhsdnIWvSTJycjdy-0V6yZZ9NvjU2N-wZn18&amp;e=3D</div>=0A<div>&nb=
sp;</div>=0A<div>_______________________________________________</div>=0A<=
div>IPFIX mailing list</div>=0A<div>IPFIX@ietf.org</div>=0A<div>https://ww=
w.ietf.org/mailman/listinfo/ipfix</div>=0A<div>&nbsp;</div>=0A<div>&nbsp;<=
/div>=0A</div></blockquote>=0A</body></html>
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From: Tianran Zhou <zhoutianran@huawei.com>
To: "Carl Moberg (camoberg)" <camoberg@cisco.com>, "adrian@olddog.co.uk" <adrian@olddog.co.uk>
Thread-Topic: Question on draft-ietf-netmod-yang-model-classification
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Date: Tue, 14 Feb 2017 09:54:10 +0000
Message-ID: <BBA82579FD347748BEADC4C445EA0F21A22B9D53@NKGEML515-MBX.china.huawei.com>
References: <067201d27270$a08cc790$e1a656b0$@olddog.co.uk> <4248688C-E0AC-4302-A281-0622D824FA4D@voltanet.io> <06fa01d28225$05a25050$10e6f0f0$@olddog.co.uk> <8DACB5AE-56FE-4CB1-BCBE-8D2BD214FFC0@cisco.com>
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Date: Tue, 14 Feb 2017 11:03:29 +0100
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Tianran Zhou <zhoutianran@huawei.com>
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Subject: Re: [OPSAWG] Question on draft-ietf-netmod-yang-model-classification
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I would prefer to have all terms people find agreement on in a single
document.

/js

On Tue, Feb 14, 2017 at 09:54:10AM +0000, Tianran Zhou wrote:
> Hi,
> 
> Based on the discussion, here I try to clean up the confusion of the two I-Ds.
> 
> [draft-ietf-netmod-yang-model-classification] classifies the yang modules into "Network Service YANG Module" and the "Network Element YANG Module". And usually, it uses "service module" to imply the "Network Service YANG Module", i.e., "Network" here only want to limit the scope to network related modules. One example of "Network Service YANG Module" is [draft-ietf-l3sm-l3vpn-service-model].
> The authors do not want to further classify the service module into more layers, until more operational practice comes.
> 
> [draft-wu-opsawg-service-model-explained] further classifies the service module into "customer service module" and the "service delivery module". I think this is based on the chair work on L3SM and L2SM WG and discussion with operators.
> But the document think the "Network Service YANG Module" defined in [draft-ietf-netmod-yang-model-classification] is "service delivery module" not include the "customer service module". The [draft-ietf-l3sm-l3vpn-service-model] is actually the "customer service module".
> 
> Here comes the question:
> 1. Whether it's necessary to further classify the "Network Service YANG Module"?
> 2. What's the well definition of "Network Service YANG Module", "customer service module", "service delivery module"?
> 3. What's the well position of the above terms in the management architecture?
> 
> Good to see if we can solve the conflicts, these two I-Ds can complement each other.
> 
> Best,
> Tianran
> 
> > -----Original Message-----
> > From: netmod [mailto:netmod-bounces@ietf.org] On Behalf Of Carl Moberg
> > (camoberg)
> > Sent: Thursday, February 09, 2017 12:48 AM
> > To: adrian@olddog.co.uk
> > Cc: opsawg@ietf.org;
> > draft-ietf-netmod-yang-model-classification@ietf.org; netmod@ietf.org;
> > Dean Bogdanovic
> > Subject: Re: [netmod] Question on
> > draft-ietf-netmod-yang-model-classification
> > 
> > Team,
> > 
> >  Inline below.
> > 
> > > On Feb 8, 2017, at 8:04 AM, Adrian Farrel <adrian@olddog.co.uk> wrote:
> > >
> > > Hi Dean,
> > >
> > > I've been processing your response and the continuing thread with you
> > and Tianran.
> > >
> > >>> We've been trying to ensure that
> > >>> draft-wu-opsawg-service-model-explained is consistent with the
> > >>> latest version of draft-ietf-netmod-yang-model-classification. In
> > >>> discussions with Tianran a question has come up.
> > >>>
> > >>> In section 2 you have a nice definition of Network Service YANG
> > >>> Modules and this definition maps nicely to our definition of "service
> > delivery models".
> > >>> Furthermore, your figure 1 shows Network Service YANG Modules on the
> > >>> interface between OSS/BSS and the various network services.
> > >>>
> > >>> We have further defined "customer service models" at a higher layer
> > >>> still. That is, on the interface to the customer. This (of course?)
> > >>> assumes that the OSS/BSS is not customer code :-)
> > >>>
> > >>> However, your discussion of Network Service YANG Modules in section
> > >>> 2.1 seems slightly at odds, although this may be just ambiguity.
> > >>>
> > >>> For example, when you say, "Network Service YANG Modules describe
> > >>> the characteristics of a service, as agreed upon with consumers of that
> > service,"
> > >>> this is not the same as, "This model is used in the discussion
> > >>> between a customer and a service provide to describe the characteristics
> > of a service."
> > >>> That is, the former case could be arrived at after processing based
> > >>> on the latter case - processing that we have called "service
> > >>> orchestration" but might (of course) be what leads to the operator poking
> > the OSS/BSS.
> > >>
> > >> Adrian, I can see the ambiguity. The point of service module is to be
> > >> consumed by the customer and there can be some modifications of the
> > >> service module to adapt to the customer specifics.
> > >
> > > So far I agree with your email and therefore not with your document. The
> > OSS/BSS is not, IMHO, a tool used by the customer.
> > >
> > > Please see Figure 3 in draft-wu-opsawg-service-model-explained-05.txt
> > that shows the customer distinct from the OSS/BSS.
> > 
> >  IMHO figure 3 in the draft is what it says, an _example_ of a set of
> > relationships between the constituent parts of a provisioning/activation
> > system.
> > 
> >  In all real-world applications, customers are several layers above the
> > “service orchestrator” and adjacent systems. But the YANG model nevertheless
> > serves the purpose of describing the structure of the service for customer
> > (outside the SP) or other consuming parties (e.g. the OSS/BSS teams).
> > 
> > >>> This might all be fine and good, but later in the same section you
> > >>> say "Network Service YANG Modules define service models to be
> > >>> consumed by external systems.
> > >>> These modules are commonly designed, developed and deployed by
> > >>> network infrastructure teams." And there you introduce two terms
> > >>> that are previously undefined and only server to add ambiguity.
> > >>> Specifically "external to what?" I could make and argument that the
> > >>> OSS is developed and deployed by network infrastructure teams, ad also
> > that the OSS is external to the network itself.
> > >>
> > >> Agree that external systems are not defined and this text has to be
> > >> clarified. The external systems can be OSS and BSS.
> > >
> > > If we relabelled our "Service Delivery Model" as "Network Service Model"
> > would that be consistent?
> > >
> > > That is, in any case, to say that the OSS/BSS does not talk directly to
> > the devices.
> > 
> >  I think that would help. And yes, the intent of “external” was to say “other
> > than”, rather than “outside of the company” (or something like that).
> > 
> > >>> And, in between these two quoted pieces of text, you have...
> > >>>
> > >>>  As an example, the Network Service YANG Module defined in
> > >>> [YANG-Data-Model-for-L3VPN-service-delivery] provides an abstract
> > >>> model for Layer 3 IP VPN service configuration.
> > >>
> > >> My question is where do you see the L3SM model above or below OSS?
> > >
> > > Well, look at the figure in section 5 of
> > > draft-ietf-l3sm-l3vpn-service-model-19.txt
> > >
> > > It is logically higher, but OSS/BSS are not "in the flow" as they are
> > legacy components in a softwarized world.
> > > However, per our pictures, OSS/BSS should use the same set of models/modules
> > as used by the "service orchestrator”.
> > 
> >  This is a little different in different SPs. Many of them consider the
> > RFS-style service definition as laid out in L3SM as something that is owned
> > by the infratrstucture and ordered through the OSS/BSS layer (the order
> > manager to be more precise).
> > 
> > >> Because there are some nuances in the service module, but at the end
> > >> we decided not to do sub classification
> > >
> > > Mutter, mutter.
> > > In the document, you talk about "network service modules" not "service
> > modules" and only trim to "service module" in the text implying that you
> > always actually mean "network service module”.
> > 
> >  We always mean “network service models”, there are many “service models”
> > out there that have little or nothing to do with the network. And I would
> > like to not go there :-)
> > 
> > >> one is the business and one technical service.
> > >>
> > >> When i read the YANG-Data-Model-for-L3VPN-service-delivery, it looked
> > >> to me much more like a technical model, then the business model, as
> > >> didn’t see SLA definitions to track the business parameters of the service
> > use.
> > >
> > > It is certainly not a business model and does not include SLAs. Other
> > people have far more experience working on these things (TMF, MEF, ...)
> > and it is not an IETF core competence. Our intention is that our module
> > can be augmented or accompanied by other modules in order to create a business
> > model, acknowledging that commercial details (even including SLAs) will
> > vary from one operator to another, but that the core technical description
> > of the service can be (and, it turns out, is) common across multiple
> > providers.
> > >
> > > We even wrote text in Section 5 of draft-wu-opsawg-service-model-explained
> > to help with this.
> > >
> > >>> Per my other email, this reference needs to be fixed. But I struggle
> > >>> to see the L3SM module as consistent with your figure. It may or may
> > >>> not be consistent with your text dependent on the interpretation.
> > >>
> > >> Sure, we can fix that reference, but the authors of L3SM module
> > >> should do their own module classification, as they are the only ones
> > >> that know the intent of the module.
> > >
> > > That is fine. They can classify it, and they can use your
> > > classification system, but only if it can be understood, is
> > > meaningful, and fits what they are trying to achieve :-)
> > >
> > > Your text currently says
> > >   As an example, the Network Service YANG Module defined in
> > >   [YANG-Data-Model-for-L3VPN-service-delivery] provides an abstract
> > >   model for Layer 3 IP VPN service configuration.
> > >
> > > Your text and figures show "Network Service YANG Module" as being something
> > that the OSS/BSS talks (presumably toward a network orchestrator?). Thus
> > the L3SM module does not fit here. And that is why we wrote
> > draft-wu-opsawg-service-model-explained and included Figure 4 to augment
> > your figure.
> > 
> >  Figure 4 also seems like an _example_ of how one could structure the layers.
> > Personally I have never seen an implementation of a clear split between
> > "Network Service YANG Modules” and "Service YANG Modules”. That’s why we
> > wanted to stay clear of that discussion until there is experience telling
> > us that this is indeed best practice.
> > 
> > > And *finally*, Tianran is concerned that there may be confusion arising
> > from whether the module we reference are "Network service modules", "service
> > delivery modules", "network configuration modules", "network element
> > modules", or "device configuration modules". So many terms, but presumably
> > these modules don't fit into all of the categories! The list is:
> > >
> > > [I-D.dhjain-bess-bgp-l3vpn-yang]
> > 
> > “”"
> >    There are two parts of the BGP L3VPN yang data model.  The first part
> >    of the model defines VRF specific parameters for L3VPN by augmenting
> >    the routing-instance container defined in the routing model [I-
> >    D.ietf-netmod-routing-cfg] and the second part of the model defines
> >    BGP specific parameters for the L3VPN by augmenting the base BGP data
> >    model defined in [I-D.shaikh-idr-bgp-model].
> > “””
> > 
> >  and it’s importing ietf-routing, ietf-interfaces, ietf-interfaces
> > augmenting /rt:routing/ and /if:interfaces/.
> > 
> > From draft-ietf-netmod-yang-model-classification:
> > 
> >  “””
> >    Network Element YANG Modules describe the characteristics of a
> >    network device as defined by the vendor of that device.  The modules
> >    are commonly structured around features of the device, e.g. interface
> >    configuration [RFC7223], OSPF configuration […] “”"
> > 
> >  I would say that ietf-bgp-l3vpn@2016-02-22.yang is a network element YANG
> > module.
> > 
> > > [I-D.ietf-bess-l2vpn-yang]
> > 
> > “””
> >    In this version of the document, one single container, l2vpn, is
> >    defined.  Within the l2vpn container, endpoint-a, endpoint-z and a
> >    list of endpoints are defined. […]
> > “”"
> > 
> > From draft-ietf-netmod-yang-model-classification:
> > 
> > “””
> >    That is, a
> >    service module does not expose the detailed configuration parameters
> >    of all participating network elements and features, but describes an
> >    abstract model that allows instances of the service to be decomposed
> >    into instance data according to the Network Element YANG Modules of
> >    the participating network elements.
> > “””
> > 
> >  I would say that ietf-l2vpn@2016-10-24.yang is a network service YANG
> > module.
> > 
> > > [I-D.ietf-bess-evpn-yang]
> > 
> > 
> >  This draft contains two modules:
> >  - ietf-ethernet-segment@2016-07-08.yang
> >  - ietf-evpn@2016-07-08.yang
> > 
> >  Reading the first paragraph of section 3.1 “Overview”
> > 
> > “””
> >       Two top level module, Ethernet-Segment and EVPN, are defined. The
> >    Ethernet-Segment contains a list of interface to which any Ethernet-
> >    Segment attributes are configured/applied.
> > “””
> > 
> >  …and understanding that the list of interfaces can be located on different
> > network elements, makes me think that these two modules are both examples
> > of network device YANG modules.
> > 
> > > I wonder what type of module you think these are.
> > >
> > > Cheers,
> > > Adrian
> > >
> > >
> > >
> > 
> > _______________________________________________
> > netmod mailing list
> > netmod@ietf.org
> > https://www.ietf.org/mailman/listinfo/netmod
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>


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From: "Adrian Farrel" <adrian@olddog.co.uk>
To: "'Tianran Zhou'" <zhoutianran@huawei.com>, "'Carl Moberg \(camoberg\)'" <camoberg@cisco.com>
References: <067201d27270$a08cc790$e1a656b0$@olddog.co.uk> <4248688C-E0AC-4302-A281-0622D824FA4D@voltanet.io> <06fa01d28225$05a25050$10e6f0f0$@olddog.co.uk> <8DACB5AE-56FE-4CB1-BCBE-8D2BD214FFC0@cisco.com> <BBA82579FD347748BEADC4C445EA0F21A22B9D53@NKGEML515-MBX.china.huawei.com>
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Date: Tue, 14 Feb 2017 10:23:49 -0000
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Cc: opsawg@ietf.org, draft-ietf-netmod-yang-model-classification@ietf.org, netmod@ietf.org, 'Dean Bogdanovic' <dean@voltanet.io>
Subject: Re: [OPSAWG] Question on draft-ietf-netmod-yang-model-classification
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Hi Tianran,

Nice summary.

I think some of the confusion may be that =
draft-ietf-netmod-yang-model-classification shows "Network Service YANG =
Modules" on the interface between OSS/BSS and the network. But the =
"customer service model" is at a different place in the hierarchy as =
shown in Figure 4 of draft-wu-opsawg-service-model-explained.

To attend to your specific questions:
> 1. Whether it's necessary to further classify the "Network Service =
YANG
> Module"?

I'm not particularly interested in doing that except so far as is =
necessary to avoid conflict between the two I-Ds. In =
draft-wu-opsawg-service-model-explained we introduced "customer service =
module" and "service delivery module" because it seemed (to us) that =
there were two different groups of people using the term "service model" =
to describe very different modules.

> 2. What's the well definition of "Network Service YANG Module", =
"customer
> service module", "service delivery module"?

Since draft-wu-opsawg-service-model-explained introduces the terms =
"customer service module" and "service delivery module" I am going to =
say that I am happy with the definitions in that document. I can say =
that "customer service module" is used consistently with the L3SM and =
L2SM work and so it is probably a stable definition. "Service delivery =
module" is a term we invented to match the definition in =
draft-wu-opsawg-service-model-explained: I don't think the term is used =
anywhere else, so maybe a better question is "is this a =
useful/meaningful term?"

If the answer to Q1 is that draft-wu-opsawg-service-model-explained =
should not try to resolve any overlap with =
draft-ietf-netmod-yang-model-classification, then I think the definition =
of "Network Service YANG Module" in =
draft-ietf-netmod-yang-model-classification is fine (with the few tweaks =
Dean and I discussed on the list).

> 3. What's the well position of the above terms in the management =
architecture?

Ah, I like that question. But it makes me ask: where should I look for =
the definitive, state-of-the art management architecture?

Thanks for continuing to drive this issue.

Adrian

> -----Original Message-----
> From: Tianran Zhou [mailto:zhoutianran@huawei.com]
> Sent: 14 February 2017 09:54
> To: Carl Moberg (camoberg); adrian@olddog.co.uk
> Cc: opsawg@ietf.org; =
draft-ietf-netmod-yang-model-classification@ietf.org;
> netmod@ietf.org; Dean Bogdanovic
> Subject: RE: Question on draft-ietf-netmod-yang-model-classification
>=20
> Hi,
>=20
> Based on the discussion, here I try to clean up the confusion of the =
two I-Ds.
>=20
> [draft-ietf-netmod-yang-model-classification] classifies the yang =
modules into
> "Network Service YANG Module" and the "Network Element YANG Module".
> And usually, it uses "service module" to imply the "Network Service =
YANG
> Module", i.e., "Network" here only want to limit the scope to network =
related
> modules. One example of "Network Service YANG Module" is =
[draft-ietf-l3sm-
> l3vpn-service-model].
> The authors do not want to further classify the service module into =
more layers,
> until more operational practice comes.
>=20
> [draft-wu-opsawg-service-model-explained] further classifies the =
service module
> into "customer service module" and the "service delivery module". I =
think this is
> based on the chair work on L3SM and L2SM WG and discussion with =
operators.
> But the document think the "Network Service YANG Module" defined in =
[draft-
> ietf-netmod-yang-model-classification] is "service delivery module" =
not include
> the "customer service module". The =
[draft-ietf-l3sm-l3vpn-service-model] is
> actually the "customer service module".
>=20
> Here comes the question:
> 1. Whether it's necessary to further classify the "Network Service =
YANG
> Module"?
> 2. What's the well definition of "Network Service YANG Module", =
"customer
> service module", "service delivery module"?
> 3. What's the well position of the above terms in the management =
architecture?
>=20
> Good to see if we can solve the conflicts, these two I-Ds can =
complement each
> other.
>=20
> Best,
> Tianran
>=20
> > -----Original Message-----
> > From: netmod [mailto:netmod-bounces@ietf.org] On Behalf Of Carl =
Moberg
> > (camoberg)
> > Sent: Thursday, February 09, 2017 12:48 AM
> > To: adrian@olddog.co.uk
> > Cc: opsawg@ietf.org;
> > draft-ietf-netmod-yang-model-classification@ietf.org; =
netmod@ietf.org;
> > Dean Bogdanovic
> > Subject: Re: [netmod] Question on
> > draft-ietf-netmod-yang-model-classification
> >
> > Team,
> >
> >  Inline below.
> >
> > > On Feb 8, 2017, at 8:04 AM, Adrian Farrel <adrian@olddog.co.uk> =
wrote:
> > >
> > > Hi Dean,
> > >
> > > I've been processing your response and the continuing thread with =
you
> > and Tianran.
> > >
> > >>> We've been trying to ensure that
> > >>> draft-wu-opsawg-service-model-explained is consistent with the
> > >>> latest version of draft-ietf-netmod-yang-model-classification. =
In
> > >>> discussions with Tianran a question has come up.
> > >>>
> > >>> In section 2 you have a nice definition of Network Service YANG
> > >>> Modules and this definition maps nicely to our definition of =
"service
> > delivery models".
> > >>> Furthermore, your figure 1 shows Network Service YANG Modules on =
the
> > >>> interface between OSS/BSS and the various network services.
> > >>>
> > >>> We have further defined "customer service models" at a higher =
layer
> > >>> still. That is, on the interface to the customer. This (of =
course?)
> > >>> assumes that the OSS/BSS is not customer code :-)
> > >>>
> > >>> However, your discussion of Network Service YANG Modules in =
section
> > >>> 2.1 seems slightly at odds, although this may be just ambiguity.
> > >>>
> > >>> For example, when you say, "Network Service YANG Modules =
describe
> > >>> the characteristics of a service, as agreed upon with consumers =
of that
> > service,"
> > >>> this is not the same as, "This model is used in the discussion
> > >>> between a customer and a service provide to describe the =
characteristics
> > of a service."
> > >>> That is, the former case could be arrived at after processing =
based
> > >>> on the latter case - processing that we have called "service
> > >>> orchestration" but might (of course) be what leads to the =
operator poking
> > the OSS/BSS.
> > >>
> > >> Adrian, I can see the ambiguity. The point of service module is =
to be
> > >> consumed by the customer and there can be some modifications of =
the
> > >> service module to adapt to the customer specifics.
> > >
> > > So far I agree with your email and therefore not with your =
document. The
> > OSS/BSS is not, IMHO, a tool used by the customer.
> > >
> > > Please see Figure 3 in =
draft-wu-opsawg-service-model-explained-05.txt
> > that shows the customer distinct from the OSS/BSS.
> >
> >  IMHO figure 3 in the draft is what it says, an _example_ of a set =
of
> > relationships between the constituent parts of a =
provisioning/activation
> > system.
> >
> >  In all real-world applications, customers are several layers above =
the
> > =E2=80=9Cservice orchestrator=E2=80=9D and adjacent systems. But the =
YANG model nevertheless
> > serves the purpose of describing the structure of the service for =
customer
> > (outside the SP) or other consuming parties (e.g. the OSS/BSS =
teams).
> >
> > >>> This might all be fine and good, but later in the same section =
you
> > >>> say "Network Service YANG Modules define service models to be
> > >>> consumed by external systems.
> > >>> These modules are commonly designed, developed and deployed by
> > >>> network infrastructure teams." And there you introduce two terms
> > >>> that are previously undefined and only server to add ambiguity.
> > >>> Specifically "external to what?" I could make and argument that =
the
> > >>> OSS is developed and deployed by network infrastructure teams, =
ad also
> > that the OSS is external to the network itself.
> > >>
> > >> Agree that external systems are not defined and this text has to =
be
> > >> clarified. The external systems can be OSS and BSS.
> > >
> > > If we relabelled our "Service Delivery Model" as "Network Service =
Model"
> > would that be consistent?
> > >
> > > That is, in any case, to say that the OSS/BSS does not talk =
directly to
> > the devices.
> >
> >  I think that would help. And yes, the intent of =
=E2=80=9Cexternal=E2=80=9D was to say =E2=80=9Cother
> > than=E2=80=9D, rather than =E2=80=9Coutside of the company=E2=80=9D =
(or something like that).
> >
> > >>> And, in between these two quoted pieces of text, you have...
> > >>>
> > >>>  As an example, the Network Service YANG Module defined in
> > >>> [YANG-Data-Model-for-L3VPN-service-delivery] provides an =
abstract
> > >>> model for Layer 3 IP VPN service configuration.
> > >>
> > >> My question is where do you see the L3SM model above or below =
OSS?
> > >
> > > Well, look at the figure in section 5 of
> > > draft-ietf-l3sm-l3vpn-service-model-19.txt
> > >
> > > It is logically higher, but OSS/BSS are not "in the flow" as they =
are
> > legacy components in a softwarized world.
> > > However, per our pictures, OSS/BSS should use the same set of
> models/modules
> > as used by the "service orchestrator=E2=80=9D.
> >
> >  This is a little different in different SPs. Many of them consider =
the
> > RFS-style service definition as laid out in L3SM as something that =
is owned
> > by the infratrstucture and ordered through the OSS/BSS layer (the =
order
> > manager to be more precise).
> >
> > >> Because there are some nuances in the service module, but at the =
end
> > >> we decided not to do sub classification
> > >
> > > Mutter, mutter.
> > > In the document, you talk about "network service modules" not =
"service
> > modules" and only trim to "service module" in the text implying that =
you
> > always actually mean "network service module=E2=80=9D.
> >
> >  We always mean =E2=80=9Cnetwork service models=E2=80=9D, there are =
many =E2=80=9Cservice models=E2=80=9D
> > out there that have little or nothing to do with the network. And I =
would
> > like to not go there :-)
> >
> > >> one is the business and one technical service.
> > >>
> > >> When i read the YANG-Data-Model-for-L3VPN-service-delivery, it =
looked
> > >> to me much more like a technical model, then the business model, =
as
> > >> didn=E2=80=99t see SLA definitions to track the business =
parameters of the service
> > use.
> > >
> > > It is certainly not a business model and does not include SLAs. =
Other
> > people have far more experience working on these things (TMF, MEF, =
...)
> > and it is not an IETF core competence. Our intention is that our =
module
> > can be augmented or accompanied by other modules in order to create =
a
> business
> > model, acknowledging that commercial details (even including SLAs) =
will
> > vary from one operator to another, but that the core technical =
description
> > of the service can be (and, it turns out, is) common across multiple
> > providers.
> > >
> > > We even wrote text in Section 5 of draft-wu-opsawg-service-model-
> explained
> > to help with this.
> > >
> > >>> Per my other email, this reference needs to be fixed. But I =
struggle
> > >>> to see the L3SM module as consistent with your figure. It may or =
may
> > >>> not be consistent with your text dependent on the =
interpretation.
> > >>
> > >> Sure, we can fix that reference, but the authors of L3SM module
> > >> should do their own module classification, as they are the only =
ones
> > >> that know the intent of the module.
> > >
> > > That is fine. They can classify it, and they can use your
> > > classification system, but only if it can be understood, is
> > > meaningful, and fits what they are trying to achieve :-)
> > >
> > > Your text currently says
> > >   As an example, the Network Service YANG Module defined in
> > >   [YANG-Data-Model-for-L3VPN-service-delivery] provides an =
abstract
> > >   model for Layer 3 IP VPN service configuration.
> > >
> > > Your text and figures show "Network Service YANG Module" as being
> something
> > that the OSS/BSS talks (presumably toward a network orchestrator?). =
Thus
> > the L3SM module does not fit here. And that is why we wrote
> > draft-wu-opsawg-service-model-explained and included Figure 4 to =
augment
> > your figure.
> >
> >  Figure 4 also seems like an _example_ of how one could structure =
the layers.
> > Personally I have never seen an implementation of a clear split =
between
> > "Network Service YANG Modules=E2=80=9D and "Service YANG =
Modules=E2=80=9D. That=E2=80=99s why we
> > wanted to stay clear of that discussion until there is experience =
telling
> > us that this is indeed best practice.
> >
> > > And *finally*, Tianran is concerned that there may be confusion =
arising
> > from whether the module we reference are "Network service modules",
> "service
> > delivery modules", "network configuration modules", "network element
> > modules", or "device configuration modules". So many terms, but =
presumably
> > these modules don't fit into all of the categories! The list is:
> > >
> > > [I-D.dhjain-bess-bgp-l3vpn-yang]
> >
> > =E2=80=9C=E2=80=9D"
> >    There are two parts of the BGP L3VPN yang data model.  The first =
part
> >    of the model defines VRF specific parameters for L3VPN by =
augmenting
> >    the routing-instance container defined in the routing model [I-
> >    D.ietf-netmod-routing-cfg] and the second part of the model =
defines
> >    BGP specific parameters for the L3VPN by augmenting the base BGP =
data
> >    model defined in [I-D.shaikh-idr-bgp-model].
> > =E2=80=9C=E2=80=9D=E2=80=9D
> >
> >  and it=E2=80=99s importing ietf-routing, ietf-interfaces, =
ietf-interfaces
> > augmenting /rt:routing/ and /if:interfaces/.
> >
> > From draft-ietf-netmod-yang-model-classification:
> >
> >  =E2=80=9C=E2=80=9D=E2=80=9D
> >    Network Element YANG Modules describe the characteristics of a
> >    network device as defined by the vendor of that device.  The =
modules
> >    are commonly structured around features of the device, e.g. =
interface
> >    configuration [RFC7223], OSPF configuration [=E2=80=A6] =
=E2=80=9C=E2=80=9D"
> >
> >  I would say that ietf-bgp-l3vpn@2016-02-22.yang is a network =
element YANG
> > module.
> >
> > > [I-D.ietf-bess-l2vpn-yang]
> >
> > =E2=80=9C=E2=80=9D=E2=80=9D
> >    In this version of the document, one single container, l2vpn, is
> >    defined.  Within the l2vpn container, endpoint-a, endpoint-z and =
a
> >    list of endpoints are defined. [=E2=80=A6]
> > =E2=80=9C=E2=80=9D"
> >
> > From draft-ietf-netmod-yang-model-classification:
> >
> > =E2=80=9C=E2=80=9D=E2=80=9D
> >    That is, a
> >    service module does not expose the detailed configuration =
parameters
> >    of all participating network elements and features, but describes =
an
> >    abstract model that allows instances of the service to be =
decomposed
> >    into instance data according to the Network Element YANG Modules =
of
> >    the participating network elements.
> > =E2=80=9C=E2=80=9D=E2=80=9D
> >
> >  I would say that ietf-l2vpn@2016-10-24.yang is a network service =
YANG
> > module.
> >
> > > [I-D.ietf-bess-evpn-yang]
> >
> >
> >  This draft contains two modules:
> >  - ietf-ethernet-segment@2016-07-08.yang
> >  - ietf-evpn@2016-07-08.yang
> >
> >  Reading the first paragraph of section 3.1 =
=E2=80=9COverview=E2=80=9D
> >
> > =E2=80=9C=E2=80=9D=E2=80=9D
> >       Two top level module, Ethernet-Segment and EVPN, are defined. =
The
> >    Ethernet-Segment contains a list of interface to which any =
Ethernet-
> >    Segment attributes are configured/applied.
> > =E2=80=9C=E2=80=9D=E2=80=9D
> >
> >  =E2=80=A6and understanding that the list of interfaces can be =
located on different
> > network elements, makes me think that these two modules are both =
examples
> > of network device YANG modules.
> >
> > > I wonder what type of module you think these are.
> > >
> > > Cheers,
> > > Adrian
> > >
> > >
> > >
> >
> > _______________________________________________
> > netmod mailing list
> > netmod@ietf.org
> > https://www.ietf.org/mailman/listinfo/netmod


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To: hu.fangwei@zte.com.cn, opsawg@ietf.org, zhoutianran@huawei.com
References: <201702131436593474530@zte.com.cn>
From: Stewart Bryant <stewart.bryant@gmail.com>
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Date: Tue, 14 Feb 2017 10:32:10 +0000
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Subject: Re: [OPSAWG] WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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I have read the draft, it is well written and  it looks correct, and indeed
there does not seem to be much more to do other than ask the IPFIX IE
Doctors to take a look at it.

Given that there are operator requests for this information to be exported
by an IPFIX exporter we should adopt the draft.

It might be useful in the security section to note that as all of this 
information
is deducible by other means there are no increased privacy concerns.

The IANA section needs to be re-written to clearly show the text that IANA
needs to put in each field in the registry

http://www.iana.org/assignments/ipfix/ipfix.xhtml

so that IANA can simply cut and past into their registry template.

- Stewart





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To: Tianran Zhou <zhoutianran@huawei.com>
References: <BBA82579FD347748BEADC4C445EA0F21A22B8B05@NKGEML515-MBX.china.huawei.com>
From: Ignas Bagdonas <ibagdona.ietf@gmail.com>
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Subject: Re: [OPSAWG] WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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Hi there,

[Copying GROW WG as this might be relevant to their coverage areas]

The document seems to be a good start but covers only standard 
communities. This is not sufficient given the universal deployment of 4 
octet ASNs. Both extended communities [RFC4360] and large communities 
[RFC8092] are needed and are used to address the signalling requirements 
for AS4 ASNs. Having separate documents each addressing only a specific 
type of community does not seem practical and rational. The document 
should include the definitions for IEs covering extended and large 
communities.

What is the logic of selecting multiple communities for export that a 
prefix may have been decorated with? Is it all of them all the time? The 
upper limit may be reaching 16000 standard communities per prefix - 
would that fit into resulting IPFIX IE? If there is a limit, how does it 
work? Is there any interpretation done on the values of the communities 
(all types, not just standard ones)? Those all are operational 
considerations aspects and should be covered in the document, appendix A 
likely could be a good place for it.

Security considerations on the privacy aspects would to be covered.

Ignas




On 13/02/2017 03:36, Tianran Zhou wrote:
> Dear OPSAWG,
>
> In Seoul, we got enough interest and positive response on this IPFIX IE extension draft.
> By the authors' request, this email starts a formal poll. The chairs would like to know if the WG participants agree that the following document should be adopted as a WG document in OPSAWG.
>
> Export BGP community information in IP Flow Information Export (IPFIX)
> https://tools.ietf.org/html/draft-li-opsawg-ipfix-bgp-community-02
>
> The adoption poll will take two weeks. Please let us know your opinion by Feb 27. It would also be good to hear who is willing to review and/or implement or deploy the extension described in the document.
>
> Since we already found that the majority of the f2f participants at our IETF97 session like this idea, please do speak up now if you do not agree or have serious objections (with explanation of course).
>
> Regards,
> Tianran
>
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg


From nobody Tue Feb 14 09:18:57 2017
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Subject: [OPSAWG] opsawg - Update to a Meeting Session Request for IETF 98
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An update to a meeting session request has just been submitted by Warren Kumari, a Chair of the opsawg working group.


---------------------------------------------------------
Working Group Name: Operations and Management Area Working Group
Area Name: Operations and Management Area
Session Requester: Warren Kumari

Number of Sessions: 1
Length of Session(s):  2 Hours
Number of Attendees: 100
Conflicts to Avoid: 
 First Priority: capport dane dprive
 Second Priority: dnsop v6ops



People who must be present:
  Joel Jaeggli
  Benoit Claise
  Warren Kumari
  Tianran Zhou

Resources Requested:
  

Special Requests:
  PLEASE NOTE: Combined OpsAWG / OpsAREA.
Please schedule it earlier in the week (before the plenary, one of the chairs is becoming AD)
---------------------------------------------------------


From nobody Tue Feb 14 16:03:12 2017
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From: Dean Bogdanovic <dean@voltanet.io>
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Cc: opsawg@ietf.org, "Carl Moberg \(camoberg\)" <camoberg@cisco.com>, draft-ietf-netmod-yang-model-classification@ietf.org, netmod@ietf.org
Subject: Re: [OPSAWG] Question on draft-ietf-netmod-yang-model-classification
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Hi Adrian and Tianran,
> On Feb 14, 2017, at 5:23 AM, Adrian Farrel <adrian@olddog.co.uk> =
wrote:
>=20
> Hi Tianran,
>=20
> Nice summary.
>=20
> I think some of the confusion may be that =
draft-ietf-netmod-yang-model-classification shows "Network Service YANG =
Modules" on the interface between OSS/BSS and the network. But the =
"customer service model" is at a different place in the hierarchy as =
shown in Figure 4 of draft-wu-opsawg-service-model-explained.

As Carl mentioned, there are can be multiple network service =
classifications, example technical and business models, but we decided =
to leave it as single model. In early versions of private draft =
(draft-bogdanovic-netmod-yang-model-classification-00)
there were 3 different services models,

business service model was connected to OSS/BSS and then there was =
network service model (technical) and service component models.

After discussions and from our experiences talking to operators we =
decided  to collapse that into single classification name.

>=20
> To attend to your specific questions:
>> 1. Whether it's necessary to further classify the "Network Service =
YANG
>> Module"?
>=20
> I'm not particularly interested in doing that except so far as is =
necessary to avoid conflict between the two I-Ds. In =
draft-wu-opsawg-service-model-explained we introduced "customer service =
module" and "service delivery module" because it seemed (to us) that =
there were two different groups of people using the term "service model" =
to describe very different modules.
Authors of draft-ietf-netmod-yang-model-classification would be against, =
as we decided that way early in our work
>=20
>> 2. What's the well definition of "Network Service YANG Module", =
"customer
>> service module", "service delivery module"?
>=20
> Since draft-wu-opsawg-service-model-explained introduces the terms =
"customer service module" and "service delivery module" I am going to =
say that I am happy with the definitions in that document. I can say =
that "customer service module" is used consistently with the L3SM and =
L2SM work and so it is probably a stable definition. "Service delivery =
module" is a term we invented to match the definition in =
draft-wu-opsawg-service-model-explained: I don't think the term is used =
anywhere else, so maybe a better question is "is this a =
useful/meaningful term?"
>=20
> If the answer to Q1 is that draft-wu-opsawg-service-model-explained =
should not try to resolve any overlap with =
draft-ietf-netmod-yang-model-classification, then I think the definition =
of "Network Service YANG Module" in =
draft-ietf-netmod-yang-model-classification is fine (with the few tweaks =
Dean and I discussed on the list).

I agree with Adrian=E2=80=99s tweaks and will update the draft =
accordingly.
>=20
>> 3. What's the well position of the above terms in the management =
architecture?
>=20
> Ah, I like that question. But it makes me ask: where should I look for =
the definitive, state-of-the art management architecture?

As few years ago, would be willing to put something forward on this =
topic, but today the management architecture is in such a flux, that =
Adrian=E2=80=99s question needs an answer first.

Dean

>=20
> Thanks for continuing to drive this issue.
>=20
> Adrian
>=20
>> -----Original Message-----
>> From: Tianran Zhou [mailto:zhoutianran@huawei.com]
>> Sent: 14 February 2017 09:54
>> To: Carl Moberg (camoberg); adrian@olddog.co.uk
>> Cc: opsawg@ietf.org; =
draft-ietf-netmod-yang-model-classification@ietf.org;
>> netmod@ietf.org; Dean Bogdanovic
>> Subject: RE: Question on draft-ietf-netmod-yang-model-classification
>>=20
>> Hi,
>>=20
>> Based on the discussion, here I try to clean up the confusion of the =
two I-Ds.
>>=20
>> [draft-ietf-netmod-yang-model-classification] classifies the yang =
modules into
>> "Network Service YANG Module" and the "Network Element YANG Module".
>> And usually, it uses "service module" to imply the "Network Service =
YANG
>> Module", i.e., "Network" here only want to limit the scope to network =
related
>> modules. One example of "Network Service YANG Module" is =
[draft-ietf-l3sm-
>> l3vpn-service-model].
>> The authors do not want to further classify the service module into =
more layers,
>> until more operational practice comes.
>>=20
>> [draft-wu-opsawg-service-model-explained] further classifies the =
service module
>> into "customer service module" and the "service delivery module". I =
think this is
>> based on the chair work on L3SM and L2SM WG and discussion with =
operators.
>> But the document think the "Network Service YANG Module" defined in =
[draft-
>> ietf-netmod-yang-model-classification] is "service delivery module" =
not include
>> the "customer service module". The =
[draft-ietf-l3sm-l3vpn-service-model] is
>> actually the "customer service module".
>>=20
>> Here comes the question:
>> 1. Whether it's necessary to further classify the "Network Service =
YANG
>> Module"?
>> 2. What's the well definition of "Network Service YANG Module", =
"customer
>> service module", "service delivery module"?
>> 3. What's the well position of the above terms in the management =
architecture?
>>=20
>> Good to see if we can solve the conflicts, these two I-Ds can =
complement each
>> other.
>>=20
>> Best,
>> Tianran
>>=20
>>> -----Original Message-----
>>> From: netmod [mailto:netmod-bounces@ietf.org] On Behalf Of Carl =
Moberg
>>> (camoberg)
>>> Sent: Thursday, February 09, 2017 12:48 AM
>>> To: adrian@olddog.co.uk
>>> Cc: opsawg@ietf.org;
>>> draft-ietf-netmod-yang-model-classification@ietf.org; =
netmod@ietf.org;
>>> Dean Bogdanovic
>>> Subject: Re: [netmod] Question on
>>> draft-ietf-netmod-yang-model-classification
>>>=20
>>> Team,
>>>=20
>>> Inline below.
>>>=20
>>>> On Feb 8, 2017, at 8:04 AM, Adrian Farrel <adrian@olddog.co.uk> =
wrote:
>>>>=20
>>>> Hi Dean,
>>>>=20
>>>> I've been processing your response and the continuing thread with =
you
>>> and Tianran.
>>>>=20
>>>>>> We've been trying to ensure that
>>>>>> draft-wu-opsawg-service-model-explained is consistent with the
>>>>>> latest version of draft-ietf-netmod-yang-model-classification. In
>>>>>> discussions with Tianran a question has come up.
>>>>>>=20
>>>>>> In section 2 you have a nice definition of Network Service YANG
>>>>>> Modules and this definition maps nicely to our definition of =
"service
>>> delivery models".
>>>>>> Furthermore, your figure 1 shows Network Service YANG Modules on =
the
>>>>>> interface between OSS/BSS and the various network services.
>>>>>>=20
>>>>>> We have further defined "customer service models" at a higher =
layer
>>>>>> still. That is, on the interface to the customer. This (of =
course?)
>>>>>> assumes that the OSS/BSS is not customer code :-)
>>>>>>=20
>>>>>> However, your discussion of Network Service YANG Modules in =
section
>>>>>> 2.1 seems slightly at odds, although this may be just ambiguity.
>>>>>>=20
>>>>>> For example, when you say, "Network Service YANG Modules describe
>>>>>> the characteristics of a service, as agreed upon with consumers =
of that
>>> service,"
>>>>>> this is not the same as, "This model is used in the discussion
>>>>>> between a customer and a service provide to describe the =
characteristics
>>> of a service."
>>>>>> That is, the former case could be arrived at after processing =
based
>>>>>> on the latter case - processing that we have called "service
>>>>>> orchestration" but might (of course) be what leads to the =
operator poking
>>> the OSS/BSS.
>>>>>=20
>>>>> Adrian, I can see the ambiguity. The point of service module is to =
be
>>>>> consumed by the customer and there can be some modifications of =
the
>>>>> service module to adapt to the customer specifics.
>>>>=20
>>>> So far I agree with your email and therefore not with your =
document. The
>>> OSS/BSS is not, IMHO, a tool used by the customer.
>>>>=20
>>>> Please see Figure 3 in =
draft-wu-opsawg-service-model-explained-05.txt
>>> that shows the customer distinct from the OSS/BSS.
>>>=20
>>> IMHO figure 3 in the draft is what it says, an _example_ of a set of
>>> relationships between the constituent parts of a =
provisioning/activation
>>> system.
>>>=20
>>> In all real-world applications, customers are several layers above =
the
>>> =E2=80=9Cservice orchestrator=E2=80=9D and adjacent systems. But the =
YANG model nevertheless
>>> serves the purpose of describing the structure of the service for =
customer
>>> (outside the SP) or other consuming parties (e.g. the OSS/BSS =
teams).
>>>=20
>>>>>> This might all be fine and good, but later in the same section =
you
>>>>>> say "Network Service YANG Modules define service models to be
>>>>>> consumed by external systems.
>>>>>> These modules are commonly designed, developed and deployed by
>>>>>> network infrastructure teams." And there you introduce two terms
>>>>>> that are previously undefined and only server to add ambiguity.
>>>>>> Specifically "external to what?" I could make and argument that =
the
>>>>>> OSS is developed and deployed by network infrastructure teams, ad =
also
>>> that the OSS is external to the network itself.
>>>>>=20
>>>>> Agree that external systems are not defined and this text has to =
be
>>>>> clarified. The external systems can be OSS and BSS.
>>>>=20
>>>> If we relabelled our "Service Delivery Model" as "Network Service =
Model"
>>> would that be consistent?
>>>>=20
>>>> That is, in any case, to say that the OSS/BSS does not talk =
directly to
>>> the devices.
>>>=20
>>> I think that would help. And yes, the intent of =E2=80=9Cexternal=E2=80=
=9D was to say =E2=80=9Cother
>>> than=E2=80=9D, rather than =E2=80=9Coutside of the company=E2=80=9D =
(or something like that).
>>>=20
>>>>>> And, in between these two quoted pieces of text, you have...
>>>>>>=20
>>>>>> As an example, the Network Service YANG Module defined in
>>>>>> [YANG-Data-Model-for-L3VPN-service-delivery] provides an abstract
>>>>>> model for Layer 3 IP VPN service configuration.
>>>>>=20
>>>>> My question is where do you see the L3SM model above or below OSS?
>>>>=20
>>>> Well, look at the figure in section 5 of
>>>> draft-ietf-l3sm-l3vpn-service-model-19.txt
>>>>=20
>>>> It is logically higher, but OSS/BSS are not "in the flow" as they =
are
>>> legacy components in a softwarized world.
>>>> However, per our pictures, OSS/BSS should use the same set of
>> models/modules
>>> as used by the "service orchestrator=E2=80=9D.
>>>=20
>>> This is a little different in different SPs. Many of them consider =
the
>>> RFS-style service definition as laid out in L3SM as something that =
is owned
>>> by the infratrstucture and ordered through the OSS/BSS layer (the =
order
>>> manager to be more precise).
>>>=20
>>>>> Because there are some nuances in the service module, but at the =
end
>>>>> we decided not to do sub classification
>>>>=20
>>>> Mutter, mutter.
>>>> In the document, you talk about "network service modules" not =
"service
>>> modules" and only trim to "service module" in the text implying that =
you
>>> always actually mean "network service module=E2=80=9D.
>>>=20
>>> We always mean =E2=80=9Cnetwork service models=E2=80=9D, there are =
many =E2=80=9Cservice models=E2=80=9D
>>> out there that have little or nothing to do with the network. And I =
would
>>> like to not go there :-)
>>>=20
>>>>> one is the business and one technical service.
>>>>>=20
>>>>> When i read the YANG-Data-Model-for-L3VPN-service-delivery, it =
looked
>>>>> to me much more like a technical model, then the business model, =
as
>>>>> didn=E2=80=99t see SLA definitions to track the business =
parameters of the service
>>> use.
>>>>=20
>>>> It is certainly not a business model and does not include SLAs. =
Other
>>> people have far more experience working on these things (TMF, MEF, =
...)
>>> and it is not an IETF core competence. Our intention is that our =
module
>>> can be augmented or accompanied by other modules in order to create =
a
>> business
>>> model, acknowledging that commercial details (even including SLAs) =
will
>>> vary from one operator to another, but that the core technical =
description
>>> of the service can be (and, it turns out, is) common across multiple
>>> providers.
>>>>=20
>>>> We even wrote text in Section 5 of draft-wu-opsawg-service-model-
>> explained
>>> to help with this.
>>>>=20
>>>>>> Per my other email, this reference needs to be fixed. But I =
struggle
>>>>>> to see the L3SM module as consistent with your figure. It may or =
may
>>>>>> not be consistent with your text dependent on the interpretation.
>>>>>=20
>>>>> Sure, we can fix that reference, but the authors of L3SM module
>>>>> should do their own module classification, as they are the only =
ones
>>>>> that know the intent of the module.
>>>>=20
>>>> That is fine. They can classify it, and they can use your
>>>> classification system, but only if it can be understood, is
>>>> meaningful, and fits what they are trying to achieve :-)
>>>>=20
>>>> Your text currently says
>>>>  As an example, the Network Service YANG Module defined in
>>>>  [YANG-Data-Model-for-L3VPN-service-delivery] provides an abstract
>>>>  model for Layer 3 IP VPN service configuration.
>>>>=20
>>>> Your text and figures show "Network Service YANG Module" as being
>> something
>>> that the OSS/BSS talks (presumably toward a network orchestrator?). =
Thus
>>> the L3SM module does not fit here. And that is why we wrote
>>> draft-wu-opsawg-service-model-explained and included Figure 4 to =
augment
>>> your figure.
>>>=20
>>> Figure 4 also seems like an _example_ of how one could structure the =
layers.
>>> Personally I have never seen an implementation of a clear split =
between
>>> "Network Service YANG Modules=E2=80=9D and "Service YANG Modules=E2=80=
=9D. That=E2=80=99s why we
>>> wanted to stay clear of that discussion until there is experience =
telling
>>> us that this is indeed best practice.
>>>=20
>>>> And *finally*, Tianran is concerned that there may be confusion =
arising
>>> from whether the module we reference are "Network service modules",
>> "service
>>> delivery modules", "network configuration modules", "network element
>>> modules", or "device configuration modules". So many terms, but =
presumably
>>> these modules don't fit into all of the categories! The list is:
>>>>=20
>>>> [I-D.dhjain-bess-bgp-l3vpn-yang]
>>>=20
>>> =E2=80=9C=E2=80=9D"
>>>   There are two parts of the BGP L3VPN yang data model.  The first =
part
>>>   of the model defines VRF specific parameters for L3VPN by =
augmenting
>>>   the routing-instance container defined in the routing model [I-
>>>   D.ietf-netmod-routing-cfg] and the second part of the model =
defines
>>>   BGP specific parameters for the L3VPN by augmenting the base BGP =
data
>>>   model defined in [I-D.shaikh-idr-bgp-model].
>>> =E2=80=9C=E2=80=9D=E2=80=9D
>>>=20
>>> and it=E2=80=99s importing ietf-routing, ietf-interfaces, =
ietf-interfaces
>>> augmenting /rt:routing/ and /if:interfaces/.
>>>=20
>>> =46rom draft-ietf-netmod-yang-model-classification:
>>>=20
>>> =E2=80=9C=E2=80=9D=E2=80=9D
>>>   Network Element YANG Modules describe the characteristics of a
>>>   network device as defined by the vendor of that device.  The =
modules
>>>   are commonly structured around features of the device, e.g. =
interface
>>>   configuration [RFC7223], OSPF configuration [=E2=80=A6] =E2=80=9C=E2=
=80=9D"
>>>=20
>>> I would say that ietf-bgp-l3vpn@2016-02-22.yang is a network element =
YANG
>>> module.
>>>=20
>>>> [I-D.ietf-bess-l2vpn-yang]
>>>=20
>>> =E2=80=9C=E2=80=9D=E2=80=9D
>>>   In this version of the document, one single container, l2vpn, is
>>>   defined.  Within the l2vpn container, endpoint-a, endpoint-z and a
>>>   list of endpoints are defined. [=E2=80=A6]
>>> =E2=80=9C=E2=80=9D"
>>>=20
>>> =46rom draft-ietf-netmod-yang-model-classification:
>>>=20
>>> =E2=80=9C=E2=80=9D=E2=80=9D
>>>   That is, a
>>>   service module does not expose the detailed configuration =
parameters
>>>   of all participating network elements and features, but describes =
an
>>>   abstract model that allows instances of the service to be =
decomposed
>>>   into instance data according to the Network Element YANG Modules =
of
>>>   the participating network elements.
>>> =E2=80=9C=E2=80=9D=E2=80=9D
>>>=20
>>> I would say that ietf-l2vpn@2016-10-24.yang is a network service =
YANG
>>> module.
>>>=20
>>>> [I-D.ietf-bess-evpn-yang]
>>>=20
>>>=20
>>> This draft contains two modules:
>>> - ietf-ethernet-segment@2016-07-08.yang
>>> - ietf-evpn@2016-07-08.yang
>>>=20
>>> Reading the first paragraph of section 3.1 =E2=80=9COverview=E2=80=9D
>>>=20
>>> =E2=80=9C=E2=80=9D=E2=80=9D
>>>      Two top level module, Ethernet-Segment and EVPN, are defined. =
The
>>>   Ethernet-Segment contains a list of interface to which any =
Ethernet-
>>>   Segment attributes are configured/applied.
>>> =E2=80=9C=E2=80=9D=E2=80=9D
>>>=20
>>> =E2=80=A6and understanding that the list of interfaces can be =
located on different
>>> network elements, makes me think that these two modules are both =
examples
>>> of network device YANG modules.
>>>=20
>>>> I wonder what type of module you think these are.
>>>>=20
>>>> Cheers,
>>>> Adrian
>>>>=20
>>>>=20
>>>>=20
>>>=20
>>> _______________________________________________
>>> netmod mailing list
>>> netmod@ietf.org
>>> https://www.ietf.org/mailman/listinfo/netmod
>=20


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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D"">Hi Adrian and Tianran,<br class=3D""><div><blockquote =
type=3D"cite" class=3D""><div class=3D"">On Feb 14, 2017, at 5:23 AM, =
Adrian Farrel &lt;<a href=3D"mailto:adrian@olddog.co.uk" =
class=3D"">adrian@olddog.co.uk</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div class=3D"">Hi =
Tianran,<br class=3D""><br class=3D"">Nice summary.<br class=3D""><br =
class=3D"">I think some of the confusion may be that =
draft-ietf-netmod-yang-model-classification shows "Network Service YANG =
Modules" on the interface between OSS/BSS and the network. But the =
"customer service model" is at a different place in the hierarchy as =
shown in Figure 4 of draft-wu-opsawg-service-model-explained.<br =
class=3D""></div></div></blockquote><div><br class=3D""></div>As Carl =
mentioned, there are can be multiple network service classifications, =
example technical and business models, but we decided to leave it as =
single model. In early versions of private draft (<span =
style=3D"font-size: 1em; font-weight: bold;" =
class=3D"">draft-bogdanovic-netmod-yang-model-classification-00</span><spa=
n style=3D"font-size: 1em;" class=3D"">)</span></div><div class=3D"">there=
 were 3 different services models,</div><div class=3D""><br =
class=3D""></div><div class=3D"">business service model was connected to =
OSS/BSS and then there was network service model (technical) and service =
component models.</div><div class=3D""><br class=3D""></div><div =
class=3D"">After discussions and from our experiences talking to =
operators we decided &nbsp;to collapse that into single classification =
name.</div><div class=3D""><br class=3D""></div><div><blockquote =
type=3D"cite" class=3D""><div class=3D""><div class=3D""><br class=3D"">To=
 attend to your specific questions:<br class=3D""><blockquote =
type=3D"cite" class=3D"">1. Whether it's necessary to further classify =
the "Network Service YANG<br class=3D"">Module"?<br =
class=3D""></blockquote><br class=3D"">I'm not particularly interested =
in doing that except so far as is necessary to avoid conflict between =
the two I-Ds. In draft-wu-opsawg-service-model-explained we introduced =
"customer service module" and "service delivery module" because it =
seemed (to us) that there were two different groups of people using the =
term "service model" to describe very different modules.<br =
class=3D""></div></div></blockquote><div>Authors =
of&nbsp;draft-ietf-netmod-yang-model-classification would be against, as =
we decided that way early in our work</div><blockquote type=3D"cite" =
class=3D""><div class=3D""><div class=3D""><br class=3D""><blockquote =
type=3D"cite" class=3D"">2. What's the well definition of "Network =
Service YANG Module", "customer<br class=3D"">service module", "service =
delivery module"?<br class=3D""></blockquote><br class=3D"">Since =
draft-wu-opsawg-service-model-explained introduces the terms "customer =
service module" and "service delivery module" I am going to say that I =
am happy with the definitions in that document. I can say that "customer =
service module" is used consistently with the L3SM and L2SM work and so =
it is probably a stable definition. "Service delivery module" is a term =
we invented to match the definition in =
draft-wu-opsawg-service-model-explained: I don't think the term is used =
anywhere else, so maybe a better question is "is this a =
useful/meaningful term?"<br class=3D""><br class=3D"">If the answer to =
Q1 is that draft-wu-opsawg-service-model-explained should not try to =
resolve any overlap with draft-ietf-netmod-yang-model-classification, =
then I think the definition of "Network Service YANG Module" in =
draft-ietf-netmod-yang-model-classification is fine (with the few tweaks =
Dean and I discussed on the list).<br =
class=3D""></div></div></blockquote><div><br class=3D""></div>I agree =
with Adrian=E2=80=99s tweaks and will update the draft accordingly.<br =
class=3D""><blockquote type=3D"cite" class=3D""><div class=3D""><div =
class=3D""><br class=3D""><blockquote type=3D"cite" class=3D"">3. What's =
the well position of the above terms in the management architecture?<br =
class=3D""></blockquote><br class=3D"">Ah, I like that question. But it =
makes me ask: where should I look for the definitive, state-of-the art =
management architecture?<br class=3D""></div></div></blockquote><div><br =
class=3D""></div>As few years ago, would be willing to put something =
forward on this topic, but today the management architecture is in such =
a flux, that Adrian=E2=80=99s question needs an answer =
first.</div><div><br class=3D""></div><div>Dean</div><div><br =
class=3D""><blockquote type=3D"cite" class=3D""><div class=3D""><div =
class=3D""><br class=3D"">Thanks for continuing to drive this issue.<br =
class=3D""><br class=3D"">Adrian<br class=3D""><br class=3D""><blockquote =
type=3D"cite" class=3D"">-----Original Message-----<br class=3D"">From: =
Tianran Zhou [<a href=3D"mailto:zhoutianran@huawei.com" =
class=3D"">mailto:zhoutianran@huawei.com</a>]<br class=3D"">Sent: 14 =
February 2017 09:54<br class=3D"">To: Carl Moberg (camoberg); <a =
href=3D"mailto:adrian@olddog.co.uk" class=3D"">adrian@olddog.co.uk</a><br =
class=3D"">Cc: <a href=3D"mailto:opsawg@ietf.org" =
class=3D"">opsawg@ietf.org</a>; <a =
href=3D"mailto:draft-ietf-netmod-yang-model-classification@ietf.org" =
class=3D"">draft-ietf-netmod-yang-model-classification@ietf.org</a>;<br =
class=3D""><a href=3D"mailto:netmod@ietf.org" =
class=3D"">netmod@ietf.org</a>; Dean Bogdanovic<br class=3D"">Subject: =
RE: Question on draft-ietf-netmod-yang-model-classification<br =
class=3D""><br class=3D"">Hi,<br class=3D""><br class=3D"">Based on the =
discussion, here I try to clean up the confusion of the two I-Ds.<br =
class=3D""><br class=3D"">[draft-ietf-netmod-yang-model-classification] =
classifies the yang modules into<br class=3D"">"Network Service YANG =
Module" and the "Network Element YANG Module".<br class=3D"">And =
usually, it uses "service module" to imply the "Network Service YANG<br =
class=3D"">Module", i.e., "Network" here only want to limit the scope to =
network related<br class=3D"">modules. One example of "Network Service =
YANG Module" is [draft-ietf-l3sm-<br class=3D"">l3vpn-service-model].<br =
class=3D"">The authors do not want to further classify the service =
module into more layers,<br class=3D"">until more operational practice =
comes.<br class=3D""><br =
class=3D"">[draft-wu-opsawg-service-model-explained] further classifies =
the service module<br class=3D"">into "customer service module" and the =
"service delivery module". I think this is<br class=3D"">based on the =
chair work on L3SM and L2SM WG and discussion with operators.<br =
class=3D"">But the document think the "Network Service YANG Module" =
defined in [draft-<br class=3D"">ietf-netmod-yang-model-classification] =
is "service delivery module" not include<br class=3D"">the "customer =
service module". The [draft-ietf-l3sm-l3vpn-service-model] is<br =
class=3D"">actually the "customer service module".<br class=3D""><br =
class=3D"">Here comes the question:<br class=3D"">1. Whether it's =
necessary to further classify the "Network Service YANG<br =
class=3D"">Module"?<br class=3D"">2. What's the well definition of =
"Network Service YANG Module", "customer<br class=3D"">service module", =
"service delivery module"?<br class=3D"">3. What's the well position of =
the above terms in the management architecture?<br class=3D""><br =
class=3D"">Good to see if we can solve the conflicts, these two I-Ds can =
complement each<br class=3D"">other.<br class=3D""><br class=3D"">Best,<br=
 class=3D"">Tianran<br class=3D""><br class=3D""><blockquote type=3D"cite"=
 class=3D"">-----Original Message-----<br class=3D"">From: netmod [<a =
href=3D"mailto:netmod-bounces@ietf.org" =
class=3D"">mailto:netmod-bounces@ietf.org</a>] On Behalf Of Carl =
Moberg<br class=3D"">(camoberg)<br class=3D"">Sent: Thursday, February =
09, 2017 12:48 AM<br class=3D"">To: <a href=3D"mailto:adrian@olddog.co.uk"=
 class=3D"">adrian@olddog.co.uk</a><br class=3D"">Cc: <a =
href=3D"mailto:opsawg@ietf.org" class=3D"">opsawg@ietf.org</a>;<br =
class=3D""><a =
href=3D"mailto:draft-ietf-netmod-yang-model-classification@ietf.org" =
class=3D"">draft-ietf-netmod-yang-model-classification@ietf.org</a>; <a =
href=3D"mailto:netmod@ietf.org" class=3D"">netmod@ietf.org</a>;<br =
class=3D"">Dean Bogdanovic<br class=3D"">Subject: Re: [netmod] Question =
on<br class=3D"">draft-ietf-netmod-yang-model-classification<br =
class=3D""><br class=3D"">Team,<br class=3D""><br class=3D""> Inline =
below.<br class=3D""><br class=3D""><blockquote type=3D"cite" =
class=3D"">On Feb 8, 2017, at 8:04 AM, Adrian Farrel &lt;<a =
href=3D"mailto:adrian@olddog.co.uk" class=3D"">adrian@olddog.co.uk</a>&gt;=
 wrote:<br class=3D""><br class=3D"">Hi Dean,<br class=3D""><br =
class=3D"">I've been processing your response and the continuing thread =
with you<br class=3D""></blockquote>and Tianran.<br class=3D""><blockquote=
 type=3D"cite" class=3D""><br class=3D""><blockquote type=3D"cite" =
class=3D""><blockquote type=3D"cite" class=3D"">We've been trying to =
ensure that<br class=3D"">draft-wu-opsawg-service-model-explained is =
consistent with the<br class=3D"">latest version of =
draft-ietf-netmod-yang-model-classification. In<br class=3D"">discussions =
with Tianran a question has come up.<br class=3D""><br class=3D"">In =
section 2 you have a nice definition of Network Service YANG<br =
class=3D"">Modules and this definition maps nicely to our definition of =
"service<br class=3D""></blockquote></blockquote></blockquote>delivery =
models".<br class=3D""><blockquote type=3D"cite" class=3D""><blockquote =
type=3D"cite" class=3D""><blockquote type=3D"cite" class=3D"">Furthermore,=
 your figure 1 shows Network Service YANG Modules on the<br =
class=3D"">interface between OSS/BSS and the various network =
services.<br class=3D""><br class=3D"">We have further defined "customer =
service models" at a higher layer<br class=3D"">still. That is, on the =
interface to the customer. This (of course?)<br class=3D"">assumes that =
the OSS/BSS is not customer code :-)<br class=3D""><br class=3D"">However,=
 your discussion of Network Service YANG Modules in section<br =
class=3D"">2.1 seems slightly at odds, although this may be just =
ambiguity.<br class=3D""><br class=3D"">For example, when you say, =
"Network Service YANG Modules describe<br class=3D"">the characteristics =
of a service, as agreed upon with consumers of that<br =
class=3D""></blockquote></blockquote></blockquote>service,"<br =
class=3D""><blockquote type=3D"cite" class=3D""><blockquote type=3D"cite" =
class=3D""><blockquote type=3D"cite" class=3D"">this is not the same as, =
"This model is used in the discussion<br class=3D"">between a customer =
and a service provide to describe the characteristics<br =
class=3D""></blockquote></blockquote></blockquote>of a service."<br =
class=3D""><blockquote type=3D"cite" class=3D""><blockquote type=3D"cite" =
class=3D""><blockquote type=3D"cite" class=3D"">That is, the former case =
could be arrived at after processing based<br class=3D"">on the latter =
case - processing that we have called "service<br =
class=3D"">orchestration" but might (of course) be what leads to the =
operator poking<br class=3D""></blockquote></blockquote></blockquote>the =
OSS/BSS.<br class=3D""><blockquote type=3D"cite" class=3D""><blockquote =
type=3D"cite" class=3D""><br class=3D"">Adrian, I can see the ambiguity. =
The point of service module is to be<br class=3D"">consumed by the =
customer and there can be some modifications of the<br class=3D"">service =
module to adapt to the customer specifics.<br class=3D""></blockquote><br =
class=3D"">So far I agree with your email and therefore not with your =
document. The<br class=3D""></blockquote>OSS/BSS is not, IMHO, a tool =
used by the customer.<br class=3D""><blockquote type=3D"cite" =
class=3D""><br class=3D"">Please see Figure 3 in =
draft-wu-opsawg-service-model-explained-05.txt<br =
class=3D""></blockquote>that shows the customer distinct from the =
OSS/BSS.<br class=3D""><br class=3D""> IMHO figure 3 in the draft is =
what it says, an _example_ of a set of<br class=3D"">relationships =
between the constituent parts of a provisioning/activation<br =
class=3D"">system.<br class=3D""><br class=3D""> In all real-world =
applications, customers are several layers above the<br =
class=3D"">=E2=80=9Cservice orchestrator=E2=80=9D and adjacent systems. =
But the YANG model nevertheless<br class=3D"">serves the purpose of =
describing the structure of the service for customer<br =
class=3D"">(outside the SP) or other consuming parties (e.g. the OSS/BSS =
teams).<br class=3D""><br class=3D""><blockquote type=3D"cite" =
class=3D""><blockquote type=3D"cite" class=3D""><blockquote type=3D"cite" =
class=3D"">This might all be fine and good, but later in the same =
section you<br class=3D"">say "Network Service YANG Modules define =
service models to be<br class=3D"">consumed by external systems.<br =
class=3D"">These modules are commonly designed, developed and deployed =
by<br class=3D"">network infrastructure teams." And there you introduce =
two terms<br class=3D"">that are previously undefined and only server to =
add ambiguity.<br class=3D"">Specifically "external to what?" I could =
make and argument that the<br class=3D"">OSS is developed and deployed =
by network infrastructure teams, ad also<br =
class=3D""></blockquote></blockquote></blockquote>that the OSS is =
external to the network itself.<br class=3D""><blockquote type=3D"cite" =
class=3D""><blockquote type=3D"cite" class=3D""><br class=3D"">Agree =
that external systems are not defined and this text has to be<br =
class=3D"">clarified. The external systems can be OSS and BSS.<br =
class=3D""></blockquote><br class=3D"">If we relabelled our "Service =
Delivery Model" as "Network Service Model"<br =
class=3D""></blockquote>would that be consistent?<br =
class=3D""><blockquote type=3D"cite" class=3D""><br class=3D"">That is, =
in any case, to say that the OSS/BSS does not talk directly to<br =
class=3D""></blockquote>the devices.<br class=3D""><br class=3D""> I =
think that would help. And yes, the intent of =E2=80=9Cexternal=E2=80=9D =
was to say =E2=80=9Cother<br class=3D"">than=E2=80=9D, rather than =
=E2=80=9Coutside of the company=E2=80=9D (or something like that).<br =
class=3D""><br class=3D""><blockquote type=3D"cite" class=3D""><blockquote=
 type=3D"cite" class=3D""><blockquote type=3D"cite" class=3D"">And, in =
between these two quoted pieces of text, you have...<br class=3D""><br =
class=3D""> As an example, the Network Service YANG Module defined in<br =
class=3D"">[YANG-Data-Model-for-L3VPN-service-delivery] provides an =
abstract<br class=3D"">model for Layer 3 IP VPN service =
configuration.<br class=3D""></blockquote><br class=3D"">My question is =
where do you see the L3SM model above or below OSS?<br =
class=3D""></blockquote><br class=3D"">Well, look at the figure in =
section 5 of<br class=3D"">draft-ietf-l3sm-l3vpn-service-model-19.txt<br =
class=3D""><br class=3D"">It is logically higher, but OSS/BSS are not =
"in the flow" as they are<br class=3D""></blockquote>legacy components =
in a softwarized world.<br class=3D""><blockquote type=3D"cite" =
class=3D"">However, per our pictures, OSS/BSS should use the same set =
of<br class=3D""></blockquote></blockquote>models/modules<br =
class=3D""><blockquote type=3D"cite" class=3D"">as used by the "service =
orchestrator=E2=80=9D.<br class=3D""><br class=3D""> This is a little =
different in different SPs. Many of them consider the<br =
class=3D"">RFS-style service definition as laid out in L3SM as something =
that is owned<br class=3D"">by the infratrstucture and ordered through =
the OSS/BSS layer (the order<br class=3D"">manager to be more =
precise).<br class=3D""><br class=3D""><blockquote type=3D"cite" =
class=3D""><blockquote type=3D"cite" class=3D"">Because there are some =
nuances in the service module, but at the end<br class=3D"">we decided =
not to do sub classification<br class=3D""></blockquote><br =
class=3D"">Mutter, mutter.<br class=3D"">In the document, you talk about =
"network service modules" not "service<br class=3D""></blockquote>modules"=
 and only trim to "service module" in the text implying that you<br =
class=3D"">always actually mean "network service module=E2=80=9D.<br =
class=3D""><br class=3D""> We always mean =E2=80=9Cnetwork service =
models=E2=80=9D, there are many =E2=80=9Cservice models=E2=80=9D<br =
class=3D"">out there that have little or nothing to do with the network. =
And I would<br class=3D"">like to not go there :-)<br class=3D""><br =
class=3D""><blockquote type=3D"cite" class=3D""><blockquote type=3D"cite" =
class=3D"">one is the business and one technical service.<br =
class=3D""><br class=3D"">When i read the =
YANG-Data-Model-for-L3VPN-service-delivery, it looked<br class=3D"">to =
me much more like a technical model, then the business model, as<br =
class=3D"">didn=E2=80=99t see SLA definitions to track the business =
parameters of the service<br class=3D""></blockquote></blockquote>use.<br =
class=3D""><blockquote type=3D"cite" class=3D""><br class=3D"">It is =
certainly not a business model and does not include SLAs. Other<br =
class=3D""></blockquote>people have far more experience working on these =
things (TMF, MEF, ...)<br class=3D"">and it is not an IETF core =
competence. Our intention is that our module<br class=3D"">can be =
augmented or accompanied by other modules in order to create a<br =
class=3D""></blockquote>business<br class=3D""><blockquote type=3D"cite" =
class=3D"">model, acknowledging that commercial details (even including =
SLAs) will<br class=3D"">vary from one operator to another, but that the =
core technical description<br class=3D"">of the service can be (and, it =
turns out, is) common across multiple<br class=3D"">providers.<br =
class=3D""><blockquote type=3D"cite" class=3D""><br class=3D"">We even =
wrote text in Section 5 of draft-wu-opsawg-service-model-<br =
class=3D""></blockquote></blockquote>explained<br class=3D""><blockquote =
type=3D"cite" class=3D"">to help with this.<br class=3D""><blockquote =
type=3D"cite" class=3D""><br class=3D""><blockquote type=3D"cite" =
class=3D""><blockquote type=3D"cite" class=3D"">Per my other email, this =
reference needs to be fixed. But I struggle<br class=3D"">to see the =
L3SM module as consistent with your figure. It may or may<br =
class=3D"">not be consistent with your text dependent on the =
interpretation.<br class=3D""></blockquote><br class=3D"">Sure, we can =
fix that reference, but the authors of L3SM module<br class=3D"">should =
do their own module classification, as they are the only ones<br =
class=3D"">that know the intent of the module.<br =
class=3D""></blockquote><br class=3D"">That is fine. They can classify =
it, and they can use your<br class=3D"">classification system, but only =
if it can be understood, is<br class=3D"">meaningful, and fits what they =
are trying to achieve :-)<br class=3D""><br class=3D"">Your text =
currently says<br class=3D""> &nbsp;As an example, the Network Service =
YANG Module defined in<br class=3D""> =
&nbsp;[YANG-Data-Model-for-L3VPN-service-delivery] provides an =
abstract<br class=3D""> &nbsp;model for Layer 3 IP VPN service =
configuration.<br class=3D""><br class=3D"">Your text and figures show =
"Network Service YANG Module" as being<br =
class=3D""></blockquote></blockquote>something<br class=3D""><blockquote =
type=3D"cite" class=3D"">that the OSS/BSS talks (presumably toward a =
network orchestrator?). Thus<br class=3D"">the L3SM module does not fit =
here. And that is why we wrote<br =
class=3D"">draft-wu-opsawg-service-model-explained and included Figure 4 =
to augment<br class=3D"">your figure.<br class=3D""><br class=3D""> =
Figure 4 also seems like an _example_ of how one could structure the =
layers.<br class=3D"">Personally I have never seen an implementation of =
a clear split between<br class=3D"">"Network Service YANG Modules=E2=80=9D=
 and "Service YANG Modules=E2=80=9D. That=E2=80=99s why we<br =
class=3D"">wanted to stay clear of that discussion until there is =
experience telling<br class=3D"">us that this is indeed best =
practice.<br class=3D""><br class=3D""><blockquote type=3D"cite" =
class=3D"">And *finally*, Tianran is concerned that there may be =
confusion arising<br class=3D""></blockquote>from whether the module we =
reference are "Network service modules",<br =
class=3D""></blockquote>"service<br class=3D""><blockquote type=3D"cite" =
class=3D"">delivery modules", "network configuration modules", "network =
element<br class=3D"">modules", or "device configuration modules". So =
many terms, but presumably<br class=3D"">these modules don't fit into =
all of the categories! The list is:<br class=3D""><blockquote =
type=3D"cite" class=3D""><br =
class=3D"">[I-D.dhjain-bess-bgp-l3vpn-yang]<br class=3D""></blockquote><br=
 class=3D"">=E2=80=9C=E2=80=9D"<br class=3D""> &nbsp;&nbsp;There are two =
parts of the BGP L3VPN yang data model. &nbsp;The first part<br =
class=3D""> &nbsp;&nbsp;of the model defines VRF specific parameters for =
L3VPN by augmenting<br class=3D""> &nbsp;&nbsp;the routing-instance =
container defined in the routing model [I-<br class=3D""> =
&nbsp;&nbsp;D.ietf-netmod-routing-cfg] and the second part of the model =
defines<br class=3D""> &nbsp;&nbsp;BGP specific parameters for the L3VPN =
by augmenting the base BGP data<br class=3D""> &nbsp;&nbsp;model defined =
in [I-D.shaikh-idr-bgp-model].<br class=3D"">=E2=80=9C=E2=80=9D=E2=80=9D<b=
r class=3D""><br class=3D""> and it=E2=80=99s importing ietf-routing, =
ietf-interfaces, ietf-interfaces<br class=3D"">augmenting /rt:routing/ =
and /if:interfaces/.<br class=3D""><br class=3D"">=46rom =
draft-ietf-netmod-yang-model-classification:<br class=3D""><br class=3D"">=
 =E2=80=9C=E2=80=9D=E2=80=9D<br class=3D""> &nbsp;&nbsp;Network Element =
YANG Modules describe the characteristics of a<br class=3D""> =
&nbsp;&nbsp;network device as defined by the vendor of that device. =
&nbsp;The modules<br class=3D""> &nbsp;&nbsp;are commonly structured =
around features of the device, e.g. interface<br class=3D""> =
&nbsp;&nbsp;configuration [RFC7223], OSPF configuration [=E2=80=A6] =
=E2=80=9C=E2=80=9D"<br class=3D""><br class=3D""> I would say that <a =
href=3D"mailto:ietf-bgp-l3vpn@2016-02-22.yang" =
class=3D"">ietf-bgp-l3vpn@2016-02-22.yang</a> is a network element =
YANG<br class=3D"">module.<br class=3D""><br class=3D""><blockquote =
type=3D"cite" class=3D"">[I-D.ietf-bess-l2vpn-yang]<br =
class=3D""></blockquote><br class=3D"">=E2=80=9C=E2=80=9D=E2=80=9D<br =
class=3D""> &nbsp;&nbsp;In this version of the document, one single =
container, l2vpn, is<br class=3D""> &nbsp;&nbsp;defined. &nbsp;Within =
the l2vpn container, endpoint-a, endpoint-z and a<br class=3D""> =
&nbsp;&nbsp;list of endpoints are defined. [=E2=80=A6]<br =
class=3D"">=E2=80=9C=E2=80=9D"<br class=3D""><br class=3D"">=46rom =
draft-ietf-netmod-yang-model-classification:<br class=3D""><br =
class=3D"">=E2=80=9C=E2=80=9D=E2=80=9D<br class=3D""> &nbsp;&nbsp;That =
is, a<br class=3D""> &nbsp;&nbsp;service module does not expose the =
detailed configuration parameters<br class=3D""> &nbsp;&nbsp;of all =
participating network elements and features, but describes an<br =
class=3D""> &nbsp;&nbsp;abstract model that allows instances of the =
service to be decomposed<br class=3D""> &nbsp;&nbsp;into instance data =
according to the Network Element YANG Modules of<br class=3D""> =
&nbsp;&nbsp;the participating network elements.<br class=3D"">=E2=80=9C=E2=
=80=9D=E2=80=9D<br class=3D""><br class=3D""> I would say that <a =
href=3D"mailto:ietf-l2vpn@2016-10-24.yang" =
class=3D"">ietf-l2vpn@2016-10-24.yang</a> is a network service YANG<br =
class=3D"">module.<br class=3D""><br class=3D""><blockquote type=3D"cite" =
class=3D"">[I-D.ietf-bess-evpn-yang]<br class=3D""></blockquote><br =
class=3D""><br class=3D""> This draft contains two modules:<br class=3D"">=
 - <a href=3D"mailto:ietf-ethernet-segment@2016-07-08.yang" =
class=3D"">ietf-ethernet-segment@2016-07-08.yang</a><br class=3D""> - <a =
href=3D"mailto:ietf-evpn@2016-07-08.yang" =
class=3D"">ietf-evpn@2016-07-08.yang</a><br class=3D""><br class=3D""> =
Reading the first paragraph of section 3.1 =E2=80=9COverview=E2=80=9D<br =
class=3D""><br class=3D"">=E2=80=9C=E2=80=9D=E2=80=9D<br class=3D""> =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Two top level module, Ethernet-Segment and =
EVPN, are defined. The<br class=3D""> &nbsp;&nbsp;Ethernet-Segment =
contains a list of interface to which any Ethernet-<br class=3D""> =
&nbsp;&nbsp;Segment attributes are configured/applied.<br =
class=3D"">=E2=80=9C=E2=80=9D=E2=80=9D<br class=3D""><br class=3D""> =
=E2=80=A6and understanding that the list of interfaces can be located on =
different<br class=3D"">network elements, makes me think that these two =
modules are both examples<br class=3D"">of network device YANG =
modules.<br class=3D""><br class=3D""><blockquote type=3D"cite" =
class=3D"">I wonder what type of module you think these are.<br =
class=3D""><br class=3D"">Cheers,<br class=3D"">Adrian<br class=3D""><br =
class=3D""><br class=3D""><br class=3D""></blockquote><br =
class=3D"">_______________________________________________<br =
class=3D"">netmod mailing list<br class=3D""><a =
href=3D"mailto:netmod@ietf.org" class=3D"">netmod@ietf.org</a><br =
class=3D"">https://www.ietf.org/mailman/listinfo/netmod<br =
class=3D""></blockquote></blockquote><br =
class=3D""></div></div></blockquote></div><br class=3D""></body></html>=

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	charset="GB2312"
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charse=
t=3DGB2312"><style>body { line-height: 1.5; }blockquote { margin-top: 0px;=
 margin-bottom: 0px; margin-left: 0.5em; }body { font-size: 10.5pt; font-f=
amily: =CE=A2=C8=ED=D1=C5=BA=DA; color: rgb(0, 0, 0); line-height: 1.5; }<=
/style></head><body>=0A<div><span></span>Dear Ignas,</div><div><br></div><=
div>Thank you very much for your support and suggestion.</div><div><br></d=
iv><div>Since the problem to be solved in this draft comes from the field =
network, we only provide the method to carry standard BGP commmunities in =
IPFIX. Extended communities are ususlly used for other purposes than stand=
ard communities, such as route target, actions for BGP flowspec etc. Wheth=
er or not we really need to cover entended communities, I want to see more=
 comments. Large communities are relavitely new. RFC8092 was published rec=
entlly. &nbsp;Anyway, however, it is easy for us to cover b<span style=3D"=
font-size: 10.5pt; line-height: 1.5; background-color: window;">oth extend=
ed communities [RFC4360] and large communities [RFC8092]</span><span style=
=3D"font-size: 10.5pt; line-height: 1.5; background-color: window;">&nbsp;=
after the adoption and further comment consensus. Text contribution is wel=
come. By the way, I want to know the opinions about the wide communities. =
Do we need to cover them together?</span></div><div><span style=3D"font-si=
ze: 10.5pt; line-height: 1.5; background-color: window;"><br></span></div>=
<div><span style=3D"font-size: 10.5pt; line-height: 1.5; background-color:=
 window;">As you said, this draft was a good start. It has value to be a w=
orking group item. We can continue the comments and discussion after the a=
doption and we will improve the document according to the consensus. O</sp=
an><span style=3D"font-size: 10.5pt; line-height: 1.5; background-color: w=
indow;">perational considerations will be covered in the next version.</sp=
an></div><div><br></div><div>Best Regards,</div><div>Zhenqiang Li</div><di=
v>China Mobile</div><blockquote style=3D"margin-top: 0px; margin-bottom: 0=
px; margin-left: 0.5em;"><div>=0A<div>&nbsp;</div>=0A<div>-----Original Me=
ssage-----</div>=0A<div>From: GROW [mailto:grow-bounces@ietf.org] On Behal=
f Of Ignas Bagdonas</div>=0A<div>Sent: Tuesday, February 14, 2017 9:46 PM<=
/div>=0A<div>To: Tianran Zhou &lt;zhoutianran@huawei.com&gt;</div>=0A<div>=
Cc: opsawg@ietf.org; opsawg-chairs@ietf.org; grow@ietf.org grow@ietf.org &=
lt;grow@ietf.org&gt;</div>=0A<div>Subject: Re: [GROW] [OPSAWG] WG adoption=
 poll for draft-li-opsawg-ipfix-bgp-community-02</div>=0A<div>&nbsp;</div>=
=0A<div>Hi there,</div>=0A<div>&nbsp;</div>=0A<div>[Copying GROW WG as thi=
s might be relevant to their coverage areas]</div>=0A<div>&nbsp;</div>=0A<=
div>The document seems to be a good start but covers only standard communi=
ties. This is not sufficient given the universal deployment of 4 octet ASN=
s. Both extended communities [RFC4360] and large communities [RFC8092] are=
 needed and are used to address the signalling requirements for AS4 ASNs. =
Having separate documents each addressing only a specific type of communit=
y does not seem practical and rational. The document should include the de=
finitions for IEs covering extended and large communities.</div>=0A<div>&n=
bsp;</div>=0A<div>What is the logic of selecting multiple communities for =
export that a prefix may have been decorated with? Is it all of them all t=
he time? The upper limit may be reaching 16000 standard communities per pr=
efix - would that fit into resulting IPFIX IE? If there is a limit, how do=
es it work? Is there any interpretation done on the values of the communit=
ies (all types, not just standard ones)? Those all are operational conside=
rations aspects and should be covered in the document, appendix A likely c=
ould be a good place for it.</div>=0A<div>&nbsp;</div>=0A<div>Security con=
siderations on the privacy aspects would to be covered.</div>=0A<div>&nbsp=
;</div>=0A<div>Ignas</div>=0A<div>&nbsp;</div>=0A<div>&nbsp;</div>=0A<div>=
&nbsp;</div>=0A<div>&nbsp;</div>=0A<div>On 13/02/2017 03:36, Tianran Zhou =
wrote:</div>=0A<div>&gt; Dear OPSAWG,</div>=0A<div>&gt;</div>=0A<div>&gt; =
In Seoul, we got enough interest and positive response on this IPFIX IE ex=
tension draft.</div>=0A<div>&gt; By the authors' request, this email start=
s a formal poll. The chairs would like to know if the WG participants agre=
e that the following document should be adopted as a WG document in OPSAWG=
.</div>=0A<div>&gt;</div>=0A<div>&gt; Export BGP community information in =
IP Flow Information Export (IPFIX)</div>=0A<div>&gt; https://tools.ietf.or=
g/html/draft-li-opsawg-ipfix-bgp-community-02</div>=0A<div>&gt;</div>=0A<d=
iv>&gt; The adoption poll will take two weeks. Please let us know your opi=
nion by Feb 27. It would also be good to hear who is willing to review and=
/or implement or deploy the extension described in the document.</div>=0A<=
div>&gt;</div>=0A<div>&gt; Since we already found that the majority of the=
 f2f participants at our IETF97 session like this idea, please do speak up=
 now if you do not agree or have serious objections (with explanation of c=
ourse).</div>=0A<div>&gt;</div>=0A<div>&gt; Regards,</div>=0A<div>&gt; Tia=
nran</div>=0A<div>&gt;</div>=0A<div>&gt; _________________________________=
______________</div>=0A<div>&gt; OPSAWG mailing list</div>=0A<div>&gt; OPS=
AWG@ietf.org</div>=0A<div>&gt; https://www.ietf.org/mailman/listinfo/opsaw=
g</div>=0A<div>&nbsp;</div>=0A<div>_______________________________________=
________</div>=0A<div>GROW mailing list</div>=0A<div>GROW@ietf.org</div>=
=0A<div>https://www.ietf.org/mailman/listinfo/grow</div>=0A</div></blockqu=
ote>=0A</body></html>
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Subject: Re: [OPSAWG] [IPFIX] [GROW] WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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Ignas Bagdonas wrote:


 > The upper limit may be reaching 16000 standard communities per prefix 
- would that fit into resulting IPFIX IE? If there is a limit, how does 
it work?


A quick calculation suggests that the maximum would be 16376 x 4-octet 
ASNs. See the figure below.

The constraining factor is the RFC7011 IPFIX Message Header "Length" 
field, since this is only 16 bits.

Splitting a list across multiple IPFIX messagesis a question which the 
IPFIX community hasn't discussed.Unfortunately the basicList "Semantic" 
field only defines the relationship among the different values within a 
single message; the relationship among values in different messages is 
not defined.

IPFIX Collectors might reasonably assume that information in subsequent 
messages supersedes information in earlier messages, so splitting a list 
across multiple messages would not have the desired effect.


      0                   1                   2                   3      
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     
|       Version Number          |        Length = 65532         |     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     
|                           Export Time                         |     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     
|                       Sequence Number                         |     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     
|                    Observation Domain ID                      |     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     
|          Set ID = 256         |         Length = 65516        |     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     
|      255      |      List Length = 65509      | semantic=allOf|     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     | 
      bSCL FieldId = 459       |      bSCL Field Length=4      |     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     | 
              bgpSourceCommunityList value 1 = x               |     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     | 
              bgpSourceCommunityList value 2 = x               |     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+      
                               ...     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+     | 
              bgpSourceCommunityList value 16376 = x           |     
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+


P.



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    <p><tt>Ignas Bagdonas wrote:</tt></p>
    <p><tt><br>
      </tt><tt>&gt; The upper limit may be reaching 16000 standard
        communities per prefix - would that fit into resulting IPFIX IE?
        If there is a limit, how does it work?</tt></p>
    <p><tt><br>
        A quick calculation suggests that the maximum would be 16376 x
        4-octet ASNs. See the figure below.</tt><tt><br>
      </tt></p>
    <p><tt>The constraining factor is the RFC7011 IPFIX Message Header
        "Length" field, since this is only 16 bits.<br>
      </tt></p>
    <p><tt><tt>Splitting a list across multiple IPFIX messages</tt></tt><tt>
        is a question which the IPFIX community hasn't discussed.</tt><tt>
        Unfortunately the basicList "Semantic" field only defines the
        relationship among the different values within a single message;
        the relationship among values in different messages is not
        defined.<br>
      </tt></p>
    <p><tt>IPFIX Collectors might reasonably assume that information in
        subsequent messages supersedes information in earlier messages,
        so splitting a list across multiple messages would not have the
        desired effect.</tt><tt><br>
      </tt></p>
    <p><br>
    </p>
    <pre><font face="Andale Mono">     0                   1                   2                   3
     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |       Version Number          |        Length = <font color="#cc0000">65532</font>         |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |                           Export Time                         |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |                       Sequence Number                         |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |                    Observation Domain ID                      |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |          Set ID = 256         |         Length = <font color="#cc0000">65516</font>        |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |      255      |      List Length = <font color="#cc0000">65509</font>      | semantic=allOf|
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |      bSCL FieldId = 459       |      bSCL Field Length=4      |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |              bgpSourceCommunityList value 1 = x               |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |              bgpSourceCommunityList value 2 = x               |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
                                   ...
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |              bgpSourceCommunityList value <font color="#cc0000">16376</font> = x           |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</font></pre>
    <p>
      <tt><br>
      </tt></p>
    <p><tt>P.</tt><br>
    </p>
    <br>
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If the list would be longer than can be accommodated in a single IPFIX 
message, then some mechanism would need to be defined to allow the list 
to be exported.

Ideally this should be a generic mechanism allowing the export of any 
large IPFIX content. However, it might be simpler to define a mechanism 
that's specific to the export of long lists.

There may be several solutions. eg, it might be a compression mechanism 
allowing the content to fit into a single message. Or the content might 
be carried across multiple messages.

If you feel it's an issue - especially if it would block your current 
work - then please start the discussion in the OPSAWG because the IPFIX 
WG is closed.

Thanks,
P.

On 16/02/17 12:02, 李振强 wrote:
> The length of IPFIX message is sufficient for BGP standard 
> communities, since the length of standard community is 4 octets. But 
> the sizes of extended community, large community and wide community 
> are bigger than the size of standard community. If the working group 
> agrees to cover the above all kinds of communities in this draft, do 
> you think we should open the discussion for IPFIX and basicList 
> message splitting?


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    If the list would be longer than can be accommodated in a single
    IPFIX message, then some mechanism would need to be defined to allow
    the list to be exported.<br>
    <br>
    Ideally this should be a generic mechanism allowing the export of
    any large IPFIX content. However, it might be simpler to define a
    mechanism that's specific to the export of long lists.<br>
    <br>
    There may be several solutions. eg, it might be a compression
    mechanism allowing the content to fit into a single message. Or the
    content might be carried across multiple messages.<br>
    <br>
    If you feel it's an issue - especially if it would block your
    current work - then please start the discussion in the OPSAWG
    because the IPFIX WG is closed.<br>
    <br>
    Thanks,<br>
    P.<br>
    <br>
    <div class="moz-cite-prefix">On 16/02/17 12:02, 李振强 wrote:<br>
    </div>
    <blockquote
      cite="mid:2d89235f-bbd2-4774-9472-4c4cea99a0e4@Tims-iPhone"
      type="cite"><font size="3"><span
          style="-webkit-tap-highlight-color: rgba(26, 26, 26,
          0.301961); -webkit-text-size-adjust: auto; background-color:
          rgba(255, 255, 255, 0);">The length of IPFIX message is
          sufficient for BGP standard communities, since the length of
          standard community is 4 octets. But the sizes of extended
          community, large community and wide community are bigger than
          the size of standard community. If the working group agrees to
          cover the above all kinds of communities in this draft, do you
          think we should open the discussion for IPFIX and basicList
          message splitting?</span></font></blockquote>
    <br>
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Subject: Re: [OPSAWG] [IPFIX] [GROW] WG adoption poll fordraft-li-opsawg-ipfix-bgp-community-02
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Thank you P.J. Aitken.

The length of IP=46IX message is sufficient for BGP standard communities,=
 since the length of standard community is 4 octets. But the sizes of ext=
ended community, large community and wide community are bigger than the s=
ize of standard community. If the working group agrees to cover the above=
 all kinds of communities in this draft, do you think we should open the =
discussion for IP=46IX and basicList message splitting=3F

Sorry for the duplicate mails.

Best Regards
Zhenqiang Li



--=E5=8F=91=E8=87=AA139=E9=82=AE=E7=AE=B1APP
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=E5=9C=A82017-02-16 19:59:59
=E6=9D=8E=E6=8C=AF=E5=BC=BA<13911635816=40139.com>=E5=86=99=E9=81=93:


=E5=8F=91=E4=BB=B6=E4=BA=BA:PJ Aitken<pjaitken=40brocade.com>
=E6=97=A5=E6=9C=9F:2017-02-16 19:16:00
=E6=94=B6=E4=BB=B6=E4=BA=BA:lizhenqiang=40chinamobile.com<lizhenqiang=40c=
hinamobile.com>, grow-bounces<grow-bounces=40ietf.org>, zhoutianran<zhout=
ianran=40huawei.com>
=E4=B8=BB=E9=A2=98:Re: =5BIP=46IX=5D =5BGROW=5D =5BOPSAWG=5D WG adoption =
poll fordraft-li-opsawg-ipfix-bgp-community-02


Ignas Bagdonas wrote:



>The upper limit may be reaching 16000 standard communities per prefix - =
would that fit into resulting IP=46IX IE=3F If there is a limit, how does=
 it work=3F



A quick calculation suggests that the maximum would be 16376 x 4-octet AS=
Ns. See the figure below.



The constraining factor is the R=46C7011 IP=46IX Message Header =22Length=
=22 field, since this is only 16 bits.



Splitting a list across multiple IP=46IX messagesis a question which the =
IP=46IX community hasn't discussed.Unfortunately the basicList =22Semanti=
c=22 field only defines the relationship among the different values withi=
n a single message; the relationship among values in different messages i=
s not defined.



IP=46IX Collectors might reasonably assume that information in subsequent=
 messages supersedes information in earlier messages, so splitting a list=
 across multiple messages would not have the desired effect.






0          1          2          3   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 =
8 9 0 1 2 3 4 5 6 7 8 9 0 1   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+   =7C    Version Number     =7C    Length =3D65532=
=7C   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+  =
 =7C              Export Time             =7C   +-+-+-+-+-+-+-+-+-+-+-+-+=
-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+   =7C            Sequence Number=
             =7C   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+-+   =7C          Observation Domain ID           =7C   +-+-+-+-=
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+   =7C     Set I=
D =3D 256     =7C     Length =3D65516=7C   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+   =7C   255   =7C   List Length =3D65=
509=7C semantic=3DallOf=7C   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+-+-+-+-+-+-+   =7C   bSCL =46ieldId =3D 459    =7C   bSCL =46iel=
d Length=3D4   =7C   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-=
+-+-+-+-+-+-+   =7C       bgpSourceCommunityList value 1 =3D x        =7C=
   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+   =7C=
       bgpSourceCommunityList value 2 =3D x        =7C   +-+-+-+-+-+-+-+-=
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+                  ...   =
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+   =7C  =
     bgpSourceCommunityList value16376=3D x      =7C   +-+-+-+-+-+-+-+-+-=
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+





P.



=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F
IP=46IX mailing list
IP=46IX=40ietf.org
https://www.ietf.org/mailman/listinfo/ipfix

--58a594e0_490e181c_13a7
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<br><font size=3D=223=22><span style=3D=22-webkit-tap-highlight-color: rg=
ba(26, 26, 26, 0.301961); -webkit-text-size-adjust: auto; background-colo=
r: rgba(255, 255, 255, 0);=22>Thank you P.J. Aitken.</span></font><div><f=
ont size=3D=223=22><span style=3D=22-webkit-tap-highlight-color: rgba(26,=
 26, 26, 0.301961); -webkit-text-size-adjust: auto; background-color: rgb=
a(255, 255, 255, 0);=22><br></span></font></div><div><font size=3D=223=22=
><span style=3D=22-webkit-tap-highlight-color: rgba(26, 26, 26, 0.301961)=
; -webkit-text-size-adjust: auto; background-color: rgba(255, 255, 255, 0=
);=22>The length of IP=46IX message is sufficient for BGP standard commun=
ities, since the length of standard community is 4 octets. But the sizes =
of extended community, large community and wide community are bigger than=
 the size of standard community. If the working group agrees to cover the=
 above all kinds of communities in this draft, do you think we should ope=
n the discussion for IP=46IX and basicList message splitting=3F</span></f=
ont></div><div><font size=3D=223=22><span style=3D=22-webkit-tap-highligh=
t-color: rgba(26, 26, 26, 0.301961); -webkit-text-size-adjust: auto; back=
ground-color: rgba(255, 255, 255, 0);=22><br></span></font></div><div><fo=
nt size=3D=223=22><span style=3D=22-webkit-tap-highlight-color: rgba(26, =
26, 26, 0.301961); -webkit-text-size-adjust: auto; background-color: rgba=
(255, 255, 255, 0);=22>Sorry for the duplicate mails.</span></font></div>=
<div><font size=3D=223=22><span style=3D=22-webkit-tap-highlight-color: r=
gba(26, 26, 26, 0.301961); -webkit-text-size-adjust: auto; background-col=
or: rgba(255, 255, 255, 0);=22><br></span></font></div><div><font size=3D=
=223=22><span style=3D=22-webkit-tap-highlight-color: rgba(26, 26, 26, 0.=
301961); -webkit-text-size-adjust: auto; background-color: rgba(255, 255,=
 255, 0);=22>Best Regards&nbsp;</span></font></div><div><font size=3D=223=
=22><span style=3D=22-webkit-tap-highlight-color: rgba(26, 26, 26, 0.3019=
61); -webkit-text-size-adjust: auto; background-color: rgba(255, 255, 255=
, 0);=22>Zhenqiang Li&nbsp;</span></font></div><div><font size=3D=223=22>=
<span style=3D=22-webkit-tap-highlight-color: rgba(26, 26, 26, 0.301961);=
 -webkit-text-size-adjust: auto; background-color: rgba(255, 255, 255, 0)=
;=22><br></span></font></div><div><br></div><br><font color=3D=22=23a8a8a=
8=22 style=3D=22font-size:15px=22>--=E5=8F=91=E8=87=AA139=E9=82=AE=E7=AE=B1=
APP<br>=E7=82=B9=E5=87=BB=E4=B8=8B=E8=BD=BD=E4=BD=BF=E7=94=A8=EF=BC=8C=E8=
=BD=BB=E6=9D=BE=E7=AE=A1=E7=90=86=E9=82=AE=E7=AE=B1 <a href=3D=22http://p=
ushemail.10086.cn/d/d.html=22><font color=3D=22=23a8a8a8=22>pushemail.100=
86.cn/d/d.html</font></a></font><br><br>=E5=9C=A82017-02-16 19:59:59<br>=E6=
=9D=8E=E6=8C=AF=E5=BC=BA&lt;13911635816=40139.com&gt;=E5=86=99=E9=81=93:<=
br><br><div style=3D=22 padding-left:10px =22><div style=3D=22border-left=
:2px solid =23999999; =22><div style=3D=22font-size: 12px;background:=23e=
fefef;padding:8px;=22><br><b>=E5=8F=91=E4=BB=B6=E4=BA=BA:</b>PJ Aitken &l=
t;pjaitken=40brocade.com&gt;<br><b>=E6=97=A5=E6=9C=9F:</b>2017-02-16 19:1=
6:00<br><b>=E6=94=B6=E4=BB=B6=E4=BA=BA:</b>lizhenqiang=40chinamobile.com =
&lt;lizhenqiang=40chinamobile.com&gt; , grow-bounces &lt;grow-bounces=40i=
etf.org&gt; , zhoutianran &lt;zhoutianran=40huawei.com&gt;<br><b>=E4=B8=BB=
=E9=A2=98:</b>Re: =5BIP=46IX=5D =5BGROW=5D =5BOPSAWG=5D WG adoption poll =
fordraft-li-opsawg-ipfix-bgp-community-02<br></div><br><div>

<meta content=3D=22text/html; charset=3Dutf-8=22 http-equiv=3D=22Content-=
Type=22>
<title></title>


<p><tt>Ignas Bagdonas wrote:</tt></p>
<p><tt><br></tt> <tt>&gt; The upper limit may be reaching 16000
standard communities per prefix - would that fit into resulting
IP=46IX IE=3F If there is a limit, how does it work=3F</tt></p>
<p><tt><br>
A quick calculation suggests that the maximum would be 16376 x
4-octet ASNs. See the figure below.</tt><tt><br></tt></p>
<p><tt>The constraining factor is the R=46C7011 IP=46IX Message Header
=22Length=22 field, since this is only 16 bits.<br></tt></p>
<p><tt><tt>Splitting a list across multiple IP=46IX
messages</tt></tt> <tt>is a question which the IP=46IX community
hasn't discussed.</tt> <tt>Unfortunately the basicList =22Semantic=22
field only defines the relationship among the different values
within a single message; the relationship among values in different
messages is not defined.<br></tt></p>
<p><tt>IP=46IX Collectors might reasonably assume that information in
subsequent messages supersedes information in earlier messages, so
splitting a list across multiple messages would not have the
desired effect.</tt><tt><br></tt></p>
<p><br></p>
<pre><font face=3D=22Andale Mono=22>     0                   1           =
        2                   3
     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    =7C       Version Number          =7C        Length =3D <font color=3D=
=22=23CC0000=22>65532</font>         =7C
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    =7C                           Export Time                         =7C=

    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    =7C                       Sequence Number                         =7C=

    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    =7C                    Observation Domain ID                      =7C=

    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    =7C          Set ID =3D 256         =7C         Length =3D <font colo=
r=3D=22=23CC0000=22>65516</font>        =7C
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    =7C      255      =7C      List Length =3D <font color=3D=22=23CC0000=
=22>65509</font>      =7C semantic=3DallOf=7C
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    =7C      bSCL =46ieldId =3D 459       =7C      bSCL =46ield Length=3D=
4      =7C
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    =7C              bgpSourceCommunityList value 1 =3D x               =7C=

    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    =7C              bgpSourceCommunityList value 2 =3D x               =7C=

    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
                                   ...
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    =7C              bgpSourceCommunityList value <font color=3D=22=23CC0=
000=22>16376</font> =3D x           =7C
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+</fo=
nt>
</pre>
<p><tt><br></tt></p>
<p><tt>P.</tt><br></p>
<br>


=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=
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<br>IP=46IX mailing list
<br>IP=46IX=40ietf.org
<br>https://www.ietf.org/mailman/listinfo/ipfix
<br></div></div></div>
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To: PJ Aitken <pjaitken@brocade.com>, "lizhenqiang@chinamobile.com" <lizhenqiang@chinamobile.com>, grow-bounces <grow-bounces@ietf.org>, zhoutianran <zhoutianran@huawei.com>
References: <BBA82579FD347748BEADC4C445EA0F21A22B8B05@NKGEML515-MBX.china.huawei.com> <7023a95c-c6a9-4d6a-b009-8f35e447aa4e@gmail.com> <76CD132C3ADEF848BD84D028D243C9279357F4EA@NKGEML515-MBX.china.huawei.com> <2017021611151726192539@chinamobile.com> <9f060f89-a2a8-5f87-4d66-088cb389ac14@brocade.com>
From: Stewart Bryant <stewart.bryant@gmail.com>
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Date: Thu, 16 Feb 2017 16:14:20 +0000
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Subject: Re: [OPSAWG] [IPFIX] [GROW] WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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On 16/02/2017 11:15, PJ Aitken wrote:
>
> IPFIX Collectors might reasonably assume that information in 
> subsequent messages supersedes information in earlier messages, so 
> splitting a list across multiple messages would not have the desired 
> effect.
>
>

Hi Paul

Could you not have multiple discrete templates?

Stewart

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    <p><br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 16/02/2017 11:15, PJ Aitken wrote:<br>
    </div>
    <blockquote
      cite="mid:9f060f89-a2a8-5f87-4d66-088cb389ac14@brocade.com"
      type="cite">
      <meta content="text/html; charset=windows-1252"
        http-equiv="Content-Type">
      <p><tt>IPFIX Collectors might reasonably assume that information
          in subsequent messages supersedes information in earlier
          messages, so splitting a list across multiple messages would
          not have the desired effect.</tt><tt><br>
        </tt></p>
      <br>
    </blockquote>
    <br>
    Hi Paul<br>
    <br>
    Could you not have multiple discrete templates?<br>
    <br>
    Stewart<br>
  </body>
</html>

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From: Jared Mauch <jared@puck.Nether.net>
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Subject: Re: [OPSAWG] [GROW] [IPFIX] WG adoption poll fordraft-li-opsawg-ipfix-bgp-community-02
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On Thu, Feb 16, 2017 at 07:53:23PM +0800, 李振强 wrote:
> Thank you P.J. Aitken.
> 
> The length of IPFIX message is sufficient for BGP standard communities, since the length of standard community is 4 octets. But the sizes of extended community, large community and wide community are bigger than the size of standard community. If the working group agrees to cover the above all kinds of communities in this draft, do you think we should open the discussion for IPFIX
> 

	I believe there should be coverage for 1997 as well as the upcoming large communities.

	- Jared


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Date: Thu, 16 Feb 2017 18:43:08 +0100
From: Job Snijders <job@instituut.net>
To: Jared Mauch <jared@puck.Nether.net>
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Subject: Re: [OPSAWG] [GROW] [IPFIX] WG adoption poll fordraft-li-opsawg-ipfix-bgp-community-02
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On Thu, Feb 16, 2017 at 12:08:23PM -0500, Jared Mauch wrote:
> On Thu, Feb 16, 2017 at 07:53:23PM +0800, 李振强 wrote:
> > The length of IPFIX message is sufficient for BGP standard
> > communities, since the length of standard community is 4 octets. But
> > the sizes of extended community, large community and wide community
> > are bigger than the size of standard community. If the working group
> > agrees to cover the above all kinds of communities in this draft, do
> > you think we should open the discussion for IPFIX
> > 
> 
> I believe there should be coverage for 1997 as well as the upcoming
> large communities.

Agreed. There certainly is merit in covering RFC 1997 (32-bit), RFC 4360
(64-bit) and RFC 8092 (96-bit). For each of these one can fit (at least
a few) of such communities in the 16 bits worth of length of the 'outer
enveloppe' that is the IPFIX record. Should be pretty straight forward.

On the other hand, the current version of the Wide communities draft has
a container mechanism, the outer layer at that level also has a 16-bit
field, like IPFIX has. One can't fit a 16-bit thing in a 16-bit + with
space left for leading / trailing IPFIX related data. I don't
immediately have suggestions how to fit this reliably.

Kind regards,

Job


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To: Stewart Bryant <stewart.bryant@gmail.com>, "lizhenqiang@chinamobile.com" <lizhenqiang@chinamobile.com>
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From: PJ Aitken <pjaitken@brocade.com>
Message-ID: <975eea07-1183-2356-dd32-e5543f9f8aa6@brocade.com>
Date: Thu, 16 Feb 2017 21:10:00 +0000
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Subject: Re: [OPSAWG] [IPFIX] [GROW] WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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Stewart: yes, there could be multiple templates with multiple data records.

However there's nothing to provide the necessary "All of <these>" 
semantics to allow the collector to join up the lists in a meaningful 
way - ie, specifying which lists to use / not to use, and in which order 
if that's important.

Also, the data held by the collector may be indeterminate as the data 
records change - eg if list#1 and list#4 were updated, but updates 
hadn't yet been received for list#2 and list#3. So there'd have to be a 
"hold" time when nothing is changing and/or a signal that the current 
state is good - which then leads to questions of how to handle data loss 
(eg, if the update for list#2 wasn't received in time, or arrived late.

If single packet data export is no longer sufficient - as seems likely - 
then, since we already have several ideas, it'd be worth some IPFIX 
experts pondering what the correct solution should be.

P.


> On 16/02/2017 11:15, PJ Aitken wrote:
>>
>> IPFIX Collectors might reasonably assume that information in 
>> subsequent messages supersedes information in earlier messages, so 
>> splitting a list across multiple messages would not have the desired 
>> effect.
>>
>>
>
> Hi Paul
>
> Could you not have multiple discrete templates?
>
> Stewart


From paolo@ntt.net  Thu Feb 16 14:52:38 2017
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References: <BBA82579FD347748BEADC4C445EA0F21A22B8B05@NKGEML515-MBX.china.huawei.com> <7023a95c-c6a9-4d6a-b009-8f35e447aa4e@gmail.com> <76CD132C3ADEF848BD84D028D243C9279357F4EA@NKGEML515-MBX.china.huawei.com> <2017021611151726192539@chinamobile.com>
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Subject: Re: [OPSAWG] [GROW] WG adoption poll for draft-li-opsawg-ipfix-bgp-community-02
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Hi,

I support Ignas comment with regards to Extended and Large communities.

Can you make evident the role, ie. via an example, of the bgpCommunity
IE compared to the one of bgpDestinationCommunityList?

Also, i'm puzzled by the presence of bgpSourceCommunityList: i see that
in "1. Introduction" you kind of close that up saying that there is a
Mediator that would take care of the correlation - understandable but
then again we all know with a (loosely determined) level of indirection
any problem can be addressed; since you also say the draft comes "comes
from the field network", i was wondering whether you were subtending to
reverse BGP lookups to make this work in practice. In which case, i'd
say warning flag: BGP lookups against the source IP address/prefix of a
flow would be of no general applicability at all - think, for example,
to the common case of an ISP (remotely) connected to an IXP where you
have N BGP peers and hence potentially multiple advertisements per
prefix, which one you pick for correlation would not be a deterministic
exercise.

Paolo


> On 16 Feb 2017, at 04:15, lizhenqiang@chinamobile.com wrote:
>=20
> Dear Ignas,
>=20
> Thank you very much for your support and suggestion.
>=20
> Since the problem to be solved in this draft comes from the field =
network, we only provide the method to carry standard BGP commmunities =
in IPFIX. Extended communities are ususlly used for other purposes than =
standard communities, such as route target, actions for BGP flowspec =
etc. Whether or not we really need to cover entended communities, I want =
to see more comments. Large communities are relavitely new. RFC8092 was =
published recentlly.  Anyway, however, it is easy for us to cover both =
extended communities [RFC4360] and large communities [RFC8092] after the =
adoption and further comment consensus. Text contribution is welcome. By =
the way, I want to know the opinions about the wide communities. Do we =
need to cover them together?
>=20
> As you said, this draft was a good start. It has value to be a working =
group item. We can continue the comments and discussion after the =
adoption and we will improve the document according to the consensus. =
Operational considerations will be covered in the next version.
>=20
> Best Regards,
> Zhenqiang Li
> China Mobile
> =20
> -----Original Message-----
> From: GROW [mailto:grow-bounces@ietf.org] On Behalf Of Ignas Bagdonas
> Sent: Tuesday, February 14, 2017 9:46 PM
> To: Tianran Zhou <zhoutianran@huawei.com>
> Cc: opsawg@ietf.org; opsawg-chairs@ietf.org; grow@ietf.org =
grow@ietf.org <grow@ietf.org>
> Subject: Re: [GROW] [OPSAWG] WG adoption poll for =
draft-li-opsawg-ipfix-bgp-community-02
> =20
> Hi there,
> =20
> [Copying GROW WG as this might be relevant to their coverage areas]
> =20
> The document seems to be a good start but covers only standard =
communities. This is not sufficient given the universal deployment of 4 =
octet ASNs. Both extended communities [RFC4360] and large communities =
[RFC8092] are needed and are used to address the signalling requirements =
for AS4 ASNs. Having separate documents each addressing only a specific =
type of community does not seem practical and rational. The document =
should include the definitions for IEs covering extended and large =
communities.
> =20
> What is the logic of selecting multiple communities for export that a =
prefix may have been decorated with? Is it all of them all the time? The =
upper limit may be reaching 16000 standard communities per prefix - =
would that fit into resulting IPFIX IE? If there is a limit, how does it =
work? Is there any interpretation done on the values of the communities =
(all types, not just standard ones)? Those all are operational =
considerations aspects and should be covered in the document, appendix A =
likely could be a good place for it.
> =20
> Security considerations on the privacy aspects would to be covered.
> =20
> Ignas
> =20
> =20
> =20
> =20
> On 13/02/2017 03:36, Tianran Zhou wrote:
> > Dear OPSAWG,
> >
> > In Seoul, we got enough interest and positive response on this IPFIX =
IE extension draft.
> > By the authors' request, this email starts a formal poll. The chairs =
would like to know if the WG participants agree that the following =
document should be adopted as a WG document in OPSAWG.
> >
> > Export BGP community information in IP Flow Information Export =
(IPFIX)
> > https://tools.ietf.org/html/draft-li-opsawg-ipfix-bgp-community-02
> >
> > The adoption poll will take two weeks. Please let us know your =
opinion by Feb 27. It would also be good to hear who is willing to =
review and/or implement or deploy the extension described in the =
document.
> >
> > Since we already found that the majority of the f2f participants at =
our IETF97 session like this idea, please do speak up now if you do not =
agree or have serious objections (with explanation of course).
> >
> > Regards,
> > Tianran
> >
> > _______________________________________________
> > OPSAWG mailing list
> > OPSAWG@ietf.org
> > https://www.ietf.org/mailman/listinfo/opsawg
> =20
> _______________________________________________
> GROW mailing list
> GROW@ietf.org
> https://www.ietf.org/mailman/listinfo/grow
> _______________________________________________
> GROW mailing list
> GROW@ietf.org
> https://www.ietf.org/mailman/listinfo/grow


From nobody Sat Feb 18 00:57:08 2017
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Subject: [OPSAWG] I-D Action: draft-ietf-opsawg-tacacs-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 Operations and Management Area Working Group of the IETF.

        Title           : The TACACS+ Protocol
        Authors         : Thorsten Dahm
                          Andrej Ota
                          Douglas C. Medway Gash
                          David Carrel
                          Lol Grant
	Filename        : draft-ietf-opsawg-tacacs-06.txt
	Pages           : 41
	Date            : 2017-02-18

Abstract:
   TACACS+ provides Device Administration for routers, network access
   servers and other networked computing devices via one or more
   centralized servers.  This document describes the protocol that is
   used by TACACS+.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-opsawg-tacacs/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-opsawg-tacacs-06

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-opsawg-tacacs-06


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 Mon Feb 20 00:58:48 2017
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Date: Mon, 20 Feb 2017 16:58:32 +0800
From: "lizhenqiang@chinamobile.com" <lizhenqiang@chinamobile.com>
To: "Paolo Lucente" <paolo@ntt.net>
References: <BBA82579FD347748BEADC4C445EA0F21A22B8B05@NKGEML515-MBX.china.huawei.com>,  <7023a95c-c6a9-4d6a-b009-8f35e447aa4e@gmail.com>,  <76CD132C3ADEF848BD84D028D243C9279357F4EA@NKGEML515-MBX.china.huawei.com>,  <2017021611151726192539@chinamobile.com>,  <EC4D38F4-7735-4C76-8590-FF6B4B012949@ntt.net>
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charse=
t=3Dutf-8"><style>body { line-height: 1.5; }blockquote { margin-top: 0px; =
margin-bottom: 0px; margin-left: 0.5em; }body { font-size: 10.5pt; font-fa=
mily: =E5=BE=AE=E8=BD=AF=E9=9B=85=E9=BB=91; color: rgb(0, 0, 0); line-heig=
ht: 1.5; }body { font-size: 10.5pt; color: rgb(0, 0, 0); line-height: 1.5;=
 }</style></head><body>=0A<div><span></span>Hi Paolo=EF=BC=8C</div><div><b=
r></div><div>Thank you for you opinion. The extended and large communities=
 will be considered after the adoption and according to the working group =
consensus.</div><div><br></div><div>Please see the appendix &nbsp;in the d=
raft for the example. bgpDestinationCommunityList is a basicList of bgpCom=
munity.</div><div><br></div><div>If you don't like the BGP communities acc=
ording to the source IP of a specific flow, you can indicate it in the tem=
plete, i.e. do not specify bgpSourceCommunityList IE in the templete set. =
Then the exporter will not export the information.&nbsp;</div><div><br></d=
iv><div>bgpSourceCommunityList does have values in some network environmen=
ts. For example, &nbsp;the overalll network of China Mobile consists of a =
backbone network and several province networks. Each component network is =
configured with a few communities. BGP anounces those communities among th=
e component networks. When one province wants to know where (i.e. from whi=
ch provinces) its incoming traffic comes from, it can use&nbsp;<span style=
=3D"font-size: 10.5pt; line-height: 1.5; background-color: window;">bgpSou=
rceCommunityList.</span></div>=0A<div><br></div><div>Best Regards,<br>Zhen=
qiang</div><hr style=3D"width: 210px; height: 1px;" color=3D"#b5c4df" size=
=3D"1" align=3D"left">=0A<div><span><div style=3D"MARGIN: 10px; FONT-FAMIL=
Y: verdana; FONT-SIZE: 10pt"><div>lizhenqiang@chinamobile.com</div></div><=
/span></div>=0A<blockquote style=3D"margin-top: 0px; margin-bottom: 0px; m=
argin-left: 0.5em;"><div>&nbsp;</div><div style=3D"border:none;border-top:=
solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><div style=3D"PADDING-RIGHT=
: 8px; PADDING-LEFT: 8px; FONT-SIZE: 12px;FONT-FAMILY:tahoma;COLOR:#000000=
; BACKGROUND: #efefef; PADDING-BOTTOM: 8px; PADDING-TOP: 8px"><div><b>From=
:</b>&nbsp;<a href=3D"mailto:paolo@ntt.net">Paolo Lucente</a></div><div><b=
>Date:</b>&nbsp;2017-02-17&nbsp;06:52</div><div><b>To:</b>&nbsp;<a href=3D=
"mailto:lizhenqiang@chinamobile.com">lizhenqiang</a></div><div><b>CC:</b>&=
nbsp;<a href=3D"mailto:zhoutianran@huawei.com">zhoutianran</a>; <a href=3D=
"mailto:opsawg@ietf.org">opsawg</a>; <a href=3D"mailto:opsawg-chairs@ietf.=
org">opsawg-chairs</a>; <a href=3D"mailto:grow@ietf.org">grow</a>; <a href=
=3D"mailto:ipfix@ietf.org">ipfix@ietf.org</a></div><div><b>Subject:</b>&nb=
sp;Re: [GROW] [OPSAWG] WG adoption poll for draft-li-opsawg-ipfix-bgp-comm=
unity-02</div></div></div><div><div>&nbsp;</div>=0A<div>Hi,</div>=0A<div>&=
nbsp;</div>=0A<div>I support Ignas comment with regards to Extended and La=
rge communities.</div>=0A<div>&nbsp;</div>=0A<div>Can you make evident the=
 role, ie. via an example, of the bgpCommunity</div>=0A<div>IE compared to=
 the one of bgpDestinationCommunityList?</div>=0A<div>&nbsp;</div>=0A<div>=
Also, i'm puzzled by the presence of bgpSourceCommunityList: i see that</d=
iv>=0A<div>in "1. Introduction" you kind of close that up saying that ther=
e is a</div>=0A<div>Mediator that would take care of the correlation - und=
erstandable but</div>=0A<div>then again we all know with a (loosely determ=
ined) level of indirection</div>=0A<div>any problem can be addressed; sinc=
e you also say the draft comes "comes</div>=0A<div>from the field network"=
, i was wondering whether you were subtending to</div>=0A<div>reverse BGP =
lookups to make this work in practice. In which case, i'd</div>=0A<div>say=
 warning flag: BGP lookups against the source IP address/prefix of a</div>=
=0A<div>flow would be of no general applicability at all - think, for exam=
ple,</div>=0A<div>to the common case of an ISP (remotely) connected to an =
IXP where you</div>=0A<div>have N BGP peers and hence potentially multiple=
 advertisements per</div>=0A<div>prefix, which one you pick for correlatio=
n would not be a deterministic</div>=0A<div>exercise.</div>=0A<div>&nbsp;<=
/div>=0A<div>Paolo</div>=0A<div>&nbsp;</div>=0A<div>&nbsp;</div>=0A<div>&g=
t; On 16 Feb 2017, at 04:15, lizhenqiang@chinamobile.com wrote:</div>=0A<d=
iv>&gt; </div>=0A<div>&gt; Dear Ignas,</div>=0A<div>&gt; </div>=0A<div>&gt=
; Thank you very much for your support and suggestion.</div>=0A<div>&gt; <=
/div>=0A<div>&gt; Since the problem to be solved in this draft comes from =
the field network, we only provide the method to carry standard BGP commmu=
nities in IPFIX. Extended communities are ususlly used for other purposes =
than standard communities, such as route target, actions for BGP flowspec =
etc. Whether or not we really need to cover entended communities, I want t=
o see more comments. Large communities are relavitely new. RFC8092 was pub=
lished recentlly.&nbsp; Anyway, however, it is easy for us to cover both e=
xtended communities [RFC4360] and large communities [RFC8092] after the ad=
option and further comment consensus. Text contribution is welcome. By the=
 way, I want to know the opinions about the wide communities. Do we need t=
o cover them together?</div>=0A<div>&gt; </div>=0A<div>&gt; As you said, t=
his draft was a good start. It has value to be a working group item. We ca=
n continue the comments and discussion after the adoption and we will impr=
ove the document according to the consensus. Operational considerations wi=
ll be covered in the next version.</div>=0A<div>&gt; </div>=0A<div>&gt; Be=
st Regards,</div>=0A<div>&gt; Zhenqiang Li</div>=0A<div>&gt; China Mobile<=
/div>=0A<div>&gt;&nbsp; </div>=0A<div>&gt; -----Original Message-----</div=
>=0A<div>&gt; From: GROW [mailto:grow-bounces@ietf.org] On Behalf Of Ignas=
 Bagdonas</div>=0A<div>&gt; Sent: Tuesday, February 14, 2017 9:46 PM</div>=
=0A<div>&gt; To: Tianran Zhou &lt;zhoutianran@huawei.com&gt;</div>=0A<div>=
&gt; Cc: opsawg@ietf.org; opsawg-chairs@ietf.org; grow@ietf.org grow@ietf.=
org &lt;grow@ietf.org&gt;</div>=0A<div>&gt; Subject: Re: [GROW] [OPSAWG] W=
G adoption poll for draft-li-opsawg-ipfix-bgp-community-02</div>=0A<div>&g=
t;&nbsp; </div>=0A<div>&gt; Hi there,</div>=0A<div>&gt;&nbsp; </div>=0A<di=
v>&gt; [Copying GROW WG as this might be relevant to their coverage areas]=
</div>=0A<div>&gt;&nbsp; </div>=0A<div>&gt; The document seems to be a goo=
d start but covers only standard communities. This is not sufficient given=
 the universal deployment of 4 octet ASNs. Both extended communities [RFC4=
360] and large communities [RFC8092] are needed and are used to address th=
e signalling requirements for AS4 ASNs. Having separate documents each add=
ressing only a specific type of community does not seem practical and rati=
onal. The document should include the definitions for IEs covering extende=
d and large communities.</div>=0A<div>&gt;&nbsp; </div>=0A<div>&gt; What i=
s the logic of selecting multiple communities for export that a prefix may=
 have been decorated with? Is it all of them all the time? The upper limit=
 may be reaching 16000 standard communities per prefix - would that fit in=
to resulting IPFIX IE? If there is a limit, how does it work? Is there any=
 interpretation done on the values of the communities (all types, not just=
 standard ones)? Those all are operational considerations aspects and shou=
ld be covered in the document, appendix A likely could be a good place for=
 it.</div>=0A<div>&gt;&nbsp; </div>=0A<div>&gt; Security considerations on=
 the privacy aspects would to be covered.</div>=0A<div>&gt;&nbsp; </div>=
=0A<div>&gt; Ignas</div>=0A<div>&gt;&nbsp; </div>=0A<div>&gt;&nbsp; </div>=
=0A<div>&gt;&nbsp; </div>=0A<div>&gt;&nbsp; </div>=0A<div>&gt; On 13/02/20=
17 03:36, Tianran Zhou wrote:</div>=0A<div>&gt; &gt; Dear OPSAWG,</div>=0A=
<div>&gt; &gt;</div>=0A<div>&gt; &gt; In Seoul, we got enough interest and=
 positive response on this IPFIX IE extension draft.</div>=0A<div>&gt; &gt=
; By the authors' request, this email starts a formal poll. The chairs wou=
ld like to know if the WG participants agree that the following document s=
hould be adopted as a WG document in OPSAWG.</div>=0A<div>&gt; &gt;</div>=
=0A<div>&gt; &gt; Export BGP community information in IP Flow Information =
Export (IPFIX)</div>=0A<div>&gt; &gt; https://tools.ietf.org/html/draft-li=
-opsawg-ipfix-bgp-community-02</div>=0A<div>&gt; &gt;</div>=0A<div>&gt; &g=
t; The adoption poll will take two weeks. Please let us know your opinion =
by Feb 27. It would also be good to hear who is willing to review and/or i=
mplement or deploy the extension described in the document.</div>=0A<div>&=
gt; &gt;</div>=0A<div>&gt; &gt; Since we already found that the majority o=
f the f2f participants at our IETF97 session like this idea, please do spe=
ak up now if you do not agree or have serious objections (with explanation=
 of course).</div>=0A<div>&gt; &gt;</div>=0A<div>&gt; &gt; Regards,</div>=
=0A<div>&gt; &gt; Tianran</div>=0A<div>&gt; &gt;</div>=0A<div>&gt; &gt; __=
_____________________________________________</div>=0A<div>&gt; &gt; OPSAW=
G mailing list</div>=0A<div>&gt; &gt; OPSAWG@ietf.org</div>=0A<div>&gt; &g=
t; https://www.ietf.org/mailman/listinfo/opsawg</div>=0A<div>&gt;&nbsp; </=
div>=0A<div>&gt; _______________________________________________</div>=0A<=
div>&gt; GROW mailing list</div>=0A<div>&gt; GROW@ietf.org</div>=0A<div>&g=
t; https://www.ietf.org/mailman/listinfo/grow</div>=0A<div>&gt; __________=
_____________________________________</div>=0A<div>&gt; GROW mailing list<=
/div>=0A<div>&gt; GROW@ietf.org</div>=0A<div>&gt; https://www.ietf.org/mai=
lman/listinfo/grow</div>=0A<div>&nbsp;</div>=0A<div>&nbsp;</div>=0A</div><=
/blockquote>=0A</body></html>
------=_001_NextPart511787134451_=------




From nobody Thu Feb 23 08:22:29 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 Operations and Management Area Working Group of the IETF.

        Title           : Manufacturer Usage Description Specification
        Authors         : Eliot Lear
                          Ralph Droms
                          Dan Romascanu
	Filename        : draft-ietf-opsawg-mud-04.txt
	Pages           : 40
	Date            : 2017-02-23

Abstract:
   This memo specifies the necessary components to implement
   manufacturer usage descriptions (MUD).  This includes two YANG
   modules, IPv4 and IPv6 DHCP options, an LLDP TLV, a URL suffix
   specification, an X.509 certificate extension and a means to sign and
   verify the descriptions.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-opsawg-mud/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-opsawg-mud-04

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-opsawg-mud-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/


From nobody Thu Feb 23 08:23:55 2017
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From: Eliot Lear <lear@cisco.com>
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Hi everyone,

This version contains small changes, as described in a previous email.=20
The big difference is the (re)addition of "my-controller", which
simplifies manual administration.

Eliot


On 2/23/17 5:22 PM, internet-drafts@ietf.org wrote:
> A New Internet-Draft is available from the on-line Internet-Drafts dire=
ctories.
> This draft is a work item of the Operations and Management Area Working=
 Group of the IETF.
>
>         Title           : Manufacturer Usage Description Specification
>         Authors         : Eliot Lear
>                           Ralph Droms
>                           Dan Romascanu
> 	Filename        : draft-ietf-opsawg-mud-04.txt
> 	Pages           : 40
> 	Date            : 2017-02-23
>
> Abstract:
>    This memo specifies the necessary components to implement
>    manufacturer usage descriptions (MUD).  This includes two YANG
>    modules, IPv4 and IPv6 DHCP options, an LLDP TLV, a URL suffix
>    specification, an X.509 certificate extension and a means to sign an=
d
>    verify the descriptions.
>
>
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-opsawg-mud/
>
> There's also a htmlized version available at:
> https://tools.ietf.org/html/draft-ietf-opsawg-mud-04
>
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-opsawg-mud-04
>
>
> Please note that it may take a couple of minutes from the time of submi=
ssion
> 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/
>
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg
>



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From nobody Fri Feb 24 07:20:26 2017
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From: Warren Kumari <warren@kumari.net>
Date: Fri, 24 Feb 2017 10:19:48 -0500
Message-ID: <CAHw9_iJ8SU1gCjN+T+BCcL8FPQGH=S=uAtozu9OKvvp07nfz9Q@mail.gmail.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>, Ignas Bagdonas <ibagdona.ietf@gmail.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/opsawg/ls66jLWZHnBtBUMzAIdxCNFgBn4>
Subject: Re: [OPSAWG] New OpsAWG chair volunteers...
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Hi all,

I'd like to announce that after discussion we have selected Ignas
Bagdonas (CCed) to become the new OpsAWG chair.

I would also like thank everyone who showed interest in serving.

W


On Tue, Feb 7, 2017 at 3:00 PM, Warren Kumari <warren@kumari.net> wrote:
> Hi all,
>
> I will be stepping down as OpsAWG chair, and am looking for a replacement.
> As you have probably seen, this is (generally) a very low drama, low
> stress working group.
>
> If you are interested / willing, please let me know (off-list). Of
> course, if you have any questions, I'm happy to chat, etc.
>
> W
>
> --
> 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



-- 
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


From nobody Fri Feb 24 19:50:47 2017
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From: Tianran Zhou <zhoutianran@huawei.com>
To: Warren Kumari <warren@kumari.net>, "opsawg@ietf.org" <opsawg@ietf.org>, Ignas Bagdonas <ibagdona.ietf@gmail.com>
Thread-Topic: [OPSAWG] New OpsAWG chair volunteers...
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Date: Sat, 25 Feb 2017 03:52:20 +0000
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References: <CAHw9_iKOqS7mQUDnrq6=78arFKGbdo_7otd718paFC6+v6_+7g@mail.gmail.com> <CAHw9_iJ8SU1gCjN+T+BCcL8FPQGH=S=uAtozu9OKvvp07nfz9Q@mail.gmail.com>
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Subject: Re: [OPSAWG] New OpsAWG chair volunteers...
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Hi Ignas,

Congratulations and welcome aboard!

Regards,

Tianran

> -----Original Message-----
> From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of Warren Kumari
> Sent: Friday, February 24, 2017 11:20 PM
> To: opsawg@ietf.org; Ignas Bagdonas
> Subject: Re: [OPSAWG] New OpsAWG chair volunteers...
>=20
> Hi all,
>=20
> I'd like to announce that after discussion we have selected Ignas Bagdona=
s
> (CCed) to become the new OpsAWG chair.
>=20
> I would also like thank everyone who showed interest in serving.
>=20
> W
>=20
>=20
> On Tue, Feb 7, 2017 at 3:00 PM, Warren Kumari <warren@kumari.net> wrote:
> > Hi all,
> >
> > I will be stepping down as OpsAWG chair, and am looking for a replaceme=
nt.
> > As you have probably seen, this is (generally) a very low drama, low
> > stress working group.
> >
> > If you are interested / willing, please let me know (off-list). Of
> > course, if you have any questions, I'm happy to chat, etc.
> >
> > W
> >
> > --
> > 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
>=20
>=20
>=20
> --
> 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 re=
gret
> at having chosen those particular rabid weasels and that pair of pants.
>    ---maf
>=20
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg


From nobody Sun Feb 26 19:10:12 2017
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From: Tianran Zhou <zhoutianran@huawei.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
Thread-Topic: draft agenda released --- OPSAWG 13:00-15:00 Thursday
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Subject: [OPSAWG] draft agenda released --- OPSAWG 13:00-15:00 Thursday
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Hi Folks,

The joint meeting of OPSAWG and OPS Area is provisionally scheduled for 13:=
00-15:00 Thursday.
=20
https://tools.ietf.org/agenda/98/

We start to accept presentation requests. Please send over your request.

Regards,
Tianran


From nobody Tue Feb 28 01:18:23 2017
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From: Tianran Zhou <zhoutianran@huawei.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
Thread-Topic: Adoption of draft-li-opsawg-ipfix-bgp-community-02
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Dear OPSAWG,

Thank you for all your reviews and comments for this document during the ad=
option poll.
We see sufficient interest to work on this I-D and support of adoption this=
 document as a starting point.
So let's go ahead.

The authors, please:
1. resubmit the document named draft-ietf-opsawg-**
2. incorporate comments during the adoption call, and try to organize discu=
ssions for those need WG consensus.
3. IPR exposure if you have. We will also start an IPR poll for this I-D la=
ter.

Thanks,
Tianran and Ignas


From nobody Tue Feb 28 17:31:32 2017
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From: Tianran Zhou <zhoutianran@huawei.com>
To: "opsawg@ietf.org" <opsawg@ietf.org>
Thread-Topic: IPR poll on draft-li-opsawg-ipfix-bgp-community-02
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Subject: [OPSAWG] IPR poll on draft-li-opsawg-ipfix-bgp-community-02
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Dear WG Members,

We just adopted the I-D draft-li-opsawg-ipfix-bgp-community-02 in this work=
ing group. We want to do an IPR poll at the early stage.

Are you aware of any IPR that applies to draft-li-opsawg-ipfix-bgp-communit=
y-02.txt?=20

If you own or are aware of any IPR that applies to the draft-li-opsawg-ipfi=
x-bgp-community-02 please clarify whether this IPR been disclosed in compli=
ance with IETF IPR rules (see RFCs 3979, 4879, 3669 and 5378 for more detai=
ls).

If you are listed as a document author or contributor please respond to thi=
s email in OPSAWG mailing list regardless of whether or not you are aware o=
f any relevant IPR. The document will not advance to the next stage until a=
 response has been received from each author and contributor.

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

Thank you for kind support.

Regards,

Ignas & Tianran


From nobody Tue Feb 28 18:50:31 2017
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From: "Dongjie (Jimmy)" <jie.dong@huawei.com>
To: Tianran Zhou <zhoutianran@huawei.com>, "opsawg@ietf.org" <opsawg@ietf.org>
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Date: Wed, 1 Mar 2017 02:51:54 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/opsawg/A5VNW5fMu-_qNlw6Tjfy7iT5v8M>
Subject: Re: [OPSAWG] IPR poll on draft-li-opsawg-ipfix-bgp-community-02
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Hi Tianran,=20

I'm not aware of any IPR related to this document.=20

Best regards,
Jie

> -----Original Message-----
> From: OPSAWG [mailto:opsawg-bounces@ietf.org] On Behalf Of Tianran Zhou
> Sent: Wednesday, March 01, 2017 9:33 AM
> To: opsawg@ietf.org
> Subject: [OPSAWG] IPR poll on draft-li-opsawg-ipfix-bgp-community-02
>=20
> Dear WG Members,
>=20
> We just adopted the I-D draft-li-opsawg-ipfix-bgp-community-02 in this wo=
rking
> group. We want to do an IPR poll at the early stage.
>=20
> Are you aware of any IPR that applies to
> draft-li-opsawg-ipfix-bgp-community-02.txt?
>=20
> If you own or are aware of any IPR that applies to the
> draft-li-opsawg-ipfix-bgp-community-02 please clarify whether this IPR be=
en
> disclosed in compliance with IETF IPR rules (see RFCs 3979, 4879, 3669 an=
d 5378
> for more details).
>=20
> If you are listed as a document author or contributor please respond to t=
his email
> in OPSAWG mailing list regardless of whether or not you are aware of any
> relevant IPR. The document will not advance to the next stage until a res=
ponse
> has been received from each author and contributor.
>=20
> If you are not listed as an author or contributor but are on OPSAWG maili=
ng list,
> then please explicitly respond if you are aware of any IPR that has not y=
et been
> disclosed in conformance with IETF rules.
>=20
> Thank you for kind support.
>=20
> Regards,
>=20
> Ignas & Tianran
>=20
> _______________________________________________
> OPSAWG mailing list
> OPSAWG@ietf.org
> https://www.ietf.org/mailman/listinfo/opsawg


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To: Tianran Zhou <zhoutianran@huawei.com>, "opsawg@ietf.org" <opsawg@ietf.org>
Thread-Topic: Adoption of draft-li-opsawg-ipfix-bgp-community-02
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dgb2312">
<style type=3D"text/css" style=3D"display:none;"><!-- P {margin-top:0;margi=
n-bottom:0;} --></style>
</head>
<body dir=3D"ltr">
<div id=3D"divtagdefaultwrapper" style=3D"font-size:12pt;color:#000000;font=
-family:Calibri,Arial,Helvetica,sans-serif;" dir=3D"ltr">
<p><span style=3D"color: rgb(33, 33, 33); font-family: 'Microsoft YaHei UI'=
, 'Microsoft YaHei', =CE=A2=C8=ED=D1=C5=BA=DA, SimSun, =CB=CE=CC=E5, sans-s=
erif, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symb=
ol', 'Android Emoji', EmojiSymbols; font-size: 13.3333px;">Hi Tianran,&nbsp=
;</span><br style=3D"color: rgb(33, 33, 33); font-family: 'Microsoft YaHei =
UI', 'Microsoft YaHei', =CE=A2=C8=ED=D1=C5=BA=DA, SimSun, =CB=CE=CC=E5, san=
s-serif, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI S=
ymbol', 'Android Emoji', EmojiSymbols; font-size: 13.3333px;">
<br style=3D"color: rgb(33, 33, 33); font-family: 'Microsoft YaHei UI', 'Mi=
crosoft YaHei', =CE=A2=C8=ED=D1=C5=BA=DA, SimSun, =CB=CE=CC=E5, sans-serif,=
 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol', =
'Android Emoji', EmojiSymbols; font-size: 13.3333px;">
<span style=3D"color: rgb(33, 33, 33); font-family: 'Microsoft YaHei UI', '=
Microsoft YaHei', =CE=A2=C8=ED=D1=C5=BA=DA, SimSun, =CB=CE=CC=E5, sans-seri=
f, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symbol'=
, 'Android Emoji', EmojiSymbols; font-size: 13.3333px;">I'm not
 aware of any IPR related to this document as well.</span><br>
</p>
<p><span style=3D"color: rgb(33, 33, 33); font-family: 'Microsoft YaHei UI'=
, 'Microsoft YaHei', =CE=A2=C8=ED=D1=C5=BA=DA, SimSun, =CB=CE=CC=E5, sans-s=
erif, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symb=
ol', 'Android Emoji', EmojiSymbols; font-size: 13.3333px;"><br>
</span></p>
<p><span style=3D"color: rgb(33, 33, 33); font-family: 'Microsoft YaHei UI'=
, 'Microsoft YaHei', =CE=A2=C8=ED=D1=C5=BA=DA, SimSun, =CB=CE=CC=E5, sans-s=
erif, 'Apple Color Emoji', 'Segoe UI Emoji', NotoColorEmoji, 'Segoe UI Symb=
ol', 'Android Emoji', EmojiSymbols; font-size: 13.3333px;">Gu Rong</span></=
p>
<div style=3D"color: rgb(0, 0, 0);">
<div>
<hr tabindex=3D"-1" style=3D"display:inline-block; width:98%">
<div id=3D"x_divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" =
color=3D"#000000" style=3D"font-size:11pt"><b>=B7=A2=BC=FE=C8=CB:</b> OPSAW=
G &lt;opsawg-bounces@ietf.org&gt; =B4=FA=B1=ED Tianran Zhou &lt;zhoutianran=
@huawei.com&gt;<br>
<b>=B7=A2=CB=CD=CA=B1=BC=E4:</b> 2017=C4=EA2=D4=C228=C8=D5 9:18<br>
<b>=CA=D5=BC=FE=C8=CB:</b> opsawg@ietf.org<br>
<b>=D6=F7=CC=E2:</b> [OPSAWG] Adoption of draft-li-opsawg-ipfix-bgp-communi=
ty-02</font>
<div>&nbsp;</div>
</div>
</div>
<font size=3D"2"><span style=3D"font-size:10pt;">
<div class=3D"PlainText">Dear OPSAWG,<br>
<br>
Thank you for all your reviews and comments for this document during the ad=
option poll.<br>
We see sufficient interest to work on this I-D and support of adoption this=
 document as a starting point.<br>
So let's go ahead.<br>
<br>
The authors, please:<br>
1. resubmit the document named draft-ietf-opsawg-**<br>
2. incorporate comments during the adoption call, and try to organize discu=
ssions for those need WG consensus.<br>
3. IPR exposure if you have. We will also start an IPR poll for this I-D la=
ter.<br>
<br>
Thanks,<br>
Tianran and Ignas<br>
<br>
_______________________________________________<br>
OPSAWG mailing list<br>
OPSAWG@ietf.org<br>
<a href=3D"https://www.ietf.org/mailman/listinfo/opsawg" id=3D"LPlnk581934"=
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charse=
t=3Dus-ascii"><style>body { line-height: 1.5; }p { margin-top: 0px; margin=
-bottom: 0px; }body { font-size: 10.5pt; font-family: ????; color: rgb(0, =
0, 0); line-height: 1.5; }</style></head><body>=0A<div><span></span><h3><s=
pan class=3D"pipe" style=3D"font-size: 10.5pt; line-height: 1.5; backgroun=
d-color: window;">Dear OPSAWG chairs and experts,</span></h3><div><span cl=
ass=3D"pipe" style=3D"font-size: 10.5pt; line-height: 1.5; background-colo=
r: window;"><br></span></div><div><span class=3D"pipe" style=3D"font-size:=
 10.5pt; line-height: 1.5; background-color: window;">Thank you all very m=
uch for your comments and supporting this draft to be a working group item=
.</span></div><div><span class=3D"pipe" style=3D"font-size: 10.5pt; line-h=
eight: 1.5; background-color: window;"><br></span></div><div><span class=
=3D"pipe" style=3D"font-size: 10.5pt; line-height: 1.5; background-color: =
window;">The draft is resubmitted as&nbsp;</span><span style=3D"font-size:=
 10.5pt; line-height: 1.5; background-color: window;">draft-ietf-opsawg-ip=
fix-bgp-community-00 and pending for the WG chairs to approve. The comment=
s during the adoption call will be considered and incorporated in the comi=
ng versions.</span></div><div><span style=3D"font-size: 10.5pt; line-heigh=
t: 1.5; background-color: window;"><br></span></div><div><span style=3D"fo=
nt-size: 10.5pt; line-height: 1.5; background-color: window;">Best Regards=
,</span></div><h3><span class=3D"pipe" style=3D"font-size: 10.5pt; line-he=
ight: 1.5; background-color: window;">------------------------------------=
-----------------------------</span></h3><h3><span class=3D"pipe" id=3D"ms=
g-from" style=3D"font-size: 10.5pt; line-height: 1.5; background-color: wi=
ndow;">Tianran Zhou &lt;zhoutianran@huawei.com&gt;</span><span style=3D"fo=
nt-size: 10.5pt; line-height: 1.5; background-color: window;">       </spa=
n><span class=3D"pipe" id=3D"msg-date" style=3D"font-size: 10.5pt; line-he=
ight: 1.5; background-color: window;">Tue, 28 February  2017 09:18 UTC</sp=
an><a id=3D"toggle" href=3D"https://mailarchive.ietf.org/arch/search/?emai=
l_list=3Dopsawg#" style=3D"font-size: 10.5pt; line-height: 1.5; background=
-color: window;">Show header</a></h3><div class=3D"msg-header" id=3D"msg-h=
eader"><p><span style=3D"font-size: 10.5pt; line-height: 1.5; background-c=
olor: window;"><br></span></p><p><span style=3D"font-size: 10.5pt; line-he=
ight: 1.5; background-color: window;">Dear OPSAWG,</span></p></div><div id=
=3D"msg-payload"><pre class=3D"wordwrap">Thank you for all your reviews an=
d comments for this document during the adoption poll.=0AWe see sufficient=
 interest to work on this I-D and support of adoption this document as a s=
tarting point.=0ASo let's go ahead.=0AThe authors, please:=0A1. resubmit t=
he document named draft-ietf-opsawg-**=0A2. incorporate comments during th=
e adoption call, and try to organize discussions for those need WG consens=
us.=0A3. IPR exposure if you have. We will also start an IPR poll for this=
 I-D later.=0AThanks,=0ATianran and Ignas=0A</pre></div></div>=0A<div><br>=
</div><hr style=3D"width: 210px; height: 1px;" color=3D"#b5c4df" size=3D"1=
" align=3D"left">=0A<div><span><div style=3D"MARGIN: 10px; FONT-FAMILY: ve=
rdana; FONT-SIZE: 10pt"><div>lizhenqiang@chinamobile.com</div></div></span=
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From nobody Tue Feb 28 23:52:25 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 Operations and Management Area Working Group of the IETF.

        Title           : Export BGP community information in IP Flow Information Export (IPFIX)
        Authors         : Zhenqiang Li
                          Rong Gu
                          Jie Dong
	Filename        : draft-ietf-opsawg-ipfix-bgp-community-00.txt
	Pages           : 10
	Date            : 2017-02-28

Abstract:
   This draft specifies an extension to the IPFIX information model
   defined in [RFC7012] to export the BGP community [RFC1997]
   information.  Three information elements, bgpCommunity,
   bgpSourceCommunityList and bgpDestinationCommunityList, are
   introduced in this document to carry the BGP community information.
   bgpCommunity, containing exactly one BGP community value, is used to
   consist the list in bgpSourceCommunityList and
   bgpDestinationCommunityList, which are corresponding to a specific
   flow's source IP and destination IP respectively.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-opsawg-ipfix-bgp-community/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-opsawg-ipfix-bgp-community-00


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 Feb 28 23:54:22 2017
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Subject: [OPSAWG] The OPSAWG WG has placed draft-li-opsawg-ipfix-bgp-community in state "Adopted by a WG"
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The OPSAWG WG has placed draft-li-opsawg-ipfix-bgp-community in state 
Adopted by a WG (entered by Tianran Zhou)

The document is available at
https://datatracker.ietf.org/doc/draft-li-opsawg-ipfix-bgp-community/

