Jeff:

An interim sounds like a good plan.

[IDR-chair hat]
Alvaro has indicated that since all of the proposal received on the IDR list 
are new protocol proposals,

  *   Capturing IDR’s input on BGP-LS problems and potential solutions is 
appropriate for IDR as BGP-LS home.
  *   Refining any potential non-BGP solutions is outside of the scope of IDR.

[IDR-chair hat off]
[rtgwg WG member]
I’d love to attend an interim on this topic.

Sue Hares


From: Jeff Tantsura <jefftant.i...@gmail.com>
Sent: Saturday, July 9, 2022 3:40 PM
To: Robert Raszuk <rob...@raszuk.net>
Cc: Acee Lindem (acee) <a...@cisco.com>; lsr <lsr@ietf.org>; i...@ietf.org; 
Susan Hares <sha...@ndzh.com>; g...@ietf.org g...@ietf.org <g...@ietf.org>
Subject: Re: [Idr] [Lsr] IGP Monitoring Protocol

Speaking as RTGWG chair: Robert - I don’t think we’d have enough time to 
accommodate a good discussion during IETF114 (we got only 1 slot), however 
would be happy to provide a platform for an interim.
External (jefftant.i...@gmail.com<mailto:jefftant.i...@gmail.com>)
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Speaking as RTGWG chair:

Robert - I don’t think we’d have enough time to accommodate a good discussion 
during IETF114 (we got only 1 slot), however would be happy to provide a 
platform for an interim.
The topic is important and personally (being a very large BGP-LS user) I’d like 
to see it progressing.
Cheers,
Jeff


On Jul 8, 2022, at 14:44, Robert Raszuk 
<rob...@raszuk.net<mailto:rob...@raszuk.net>> wrote:

Hi Acee,

Yes, by all means input from the operator's community is needed. It can be 
collected through LSR WG, IDR WG or GROW WG. RTGWG could also contribute. We 
have already seen input from some operators and their opinion on adding and 
distributing more and more link state protocol and topology data in BGP. More 
such input is very welcome.

And to your point about RFC9086 - I see nothing wrong in keeping BGP 
information in BGP. So IGP Monitoring Protocol does not target to shut down 
BGP-LS. It only aims to remove 100% of non BGP sourced information from it.

Controllers which today listen to BGP-LS need a number of information sources 
and that spread will only keep increasing as more inputs are becoming necessary 
for its computations.

Regards,
Robert.


On Fri, Jul 8, 2022 at 11:32 PM Acee Lindem (acee) 
<a...@cisco.com<mailto:a...@cisco.com>> wrote:
Hi Robert,

From: Robert Raszuk <rob...@raszuk.net<mailto:rob...@raszuk.net>>
Date: Friday, July 8, 2022 at 4:36 PM
To: Acee Lindem <a...@cisco.com<mailto:a...@cisco.com>>
Cc: lsr <lsr@ietf.org<mailto:lsr@ietf.org>>, IDR List 
<i...@ietf.org<mailto:i...@ietf.org>>, Susan Hares 
<sha...@ndzh.com<mailto:sha...@ndzh.com>>
Subject: Re: [Lsr] IGP Monitoring Protocol

Hi Acee,

Thank you. I was not planning to present it in the upcoming IETF.

> Let’s see how many stakeholders actually want to this protocol - then we can 
> talk about a WG home.

An alternative approach could be to see how many stakeholders do not want to 
further (for no good reason) to trash BGP. That to me would be in this specific 
case a much better gauge.

In that case, it seems to me that this discussion should be relegated to IDR. 
Note that there is already non-IGP information transported in BGP-LS, e.g., 
Egress Peer Engineering 
(https://datatracker.ietf.org/doc/rfc9086/<https://shared.outlook.inky.com/link?domain=datatracker.ietf.org&t=h.eJxFjUESgyAQBL9icU6xYATEk19ZYVGj0RRuLknl75Fccp2u7nmLZ15FV4mJ-XF0ABEZOWNYKMuZOMk9jxD3ADkFr1oL4lKJpRgb8cm0Mq31uoZjwkxHv8XXJMN-BzX4Bm2K3iozNFpb66h2RE1oT8ERaGvc1RvjnDSuVKlUb5QS48a_836847yWXOGx8P_y-QJgjDiB.MEYCIQDM6a0IOMWEXn6_ra1IUbYdb6F_1qasOPtoUIKNO9acUgIhAK18nnvOVlb_6HIEZaqORgTvLo0EowqQxZEXvck3wI3m>).
 I implemented this on our data center routers (NXOS) years and it is solely 
BGP specific.

Thanks,
Acee

Kind regards,
Robert


On Fri, Jul 8, 2022 at 9:54 PM Acee Lindem (acee) 
<a...@cisco.com<mailto:a...@cisco.com>> wrote:
Speaking as WG chair:

From: Lsr <lsr-boun...@ietf.org<mailto:lsr-boun...@ietf.org>> on behalf of 
Robert Raszuk <rob...@raszuk.net<mailto:rob...@raszuk.net>>
Date: Friday, July 8, 2022 at 3:21 PM
To: lsr <lsr@ietf.org<mailto:lsr@ietf.org>>
Cc: IDR List <i...@ietf.org<mailto:i...@ietf.org>>, Susan Hares 
<sha...@ndzh.com<mailto:sha...@ndzh.com>>
Subject: [Lsr] IGP Monitoring Protocol

Dear LSR WG,

Based on ongoing discussion in respect to the future of BGP-LS I committed 
myself to put together an alternate proposal.

The main goal is not to just publish a -00 version of the draft using different 
encapsulation. The goal is to make a useful tool which can help to export link 
state information from network elements as well as assist in network 
observability.

The IGP Monitoring Protocol (IMP) draft has been posted and should be available 
at:

https://datatracker.ietf.org/doc/draft-raszuk-lsr-imp/<https://shared.outlook.inky.com/link?domain=datatracker.ietf.org&t=h.eJxFjksSgyAQRK9isY4gRkBdeZURBjV-C8aNqdw9kk223f1e9ZudYWFtxkaiI7ZCOCCgAHbGwCckz_cwCLdb4QJ4ygPE65zzJYZ8Wg_BHhmbE74h3UNZqFo3shRxhICx29w1cruvouibCrR3jS5UX0mptcHSIFa2vgGDQmplno1SxnBlkhWT9YXeE2z0e9INK0xL0qXepf6ffL6G_j4-.MEUCIQC2hblZlVJmeeemz-uLwr_s-cvzVN-tOot2gCI9RE1mnQIgOuuE-PEQ-2gw3oebrqqRpYybb52KcY61S-N_qiCf264>

One of the key points I wanted to accomplish was full backwards compatibility 
with TLVs defined for BGP-LS. In parallel other formats (optional) are also 
supported.

The PUB-SUB nature or FILTERING capabilities are in the spec however as noted 
in the deployment section there is no expectation that this should be supported 
directly on routers. Concept of Producer's Proxies has been introduced to 
support this added functionality as well as provide fan-out (analogy to BGP 
route reflectors).

I encourage everyone interested to take a look and provide comments. At this 
point this document is nothing more than my individual submission. Offline I 
have had few conversations with both operators and vendors expressing some 
level of interest in this work. How we proceed further (if at all :) depends on 
WG feedback.

Kind regards,
Robert.

PS, I do believe this work belongs in LSR WG pretty squerly.

Let’s see how many stakeholders actually want to this protocol - then we can 
talk about a WG home.  By stakeholders, I mean operators and vendors who are 
committed to implementing and deploying it - not simply those who you are able 
to enlist as co-authors. Note that our IETF 114 LSR agenda is full (with 
multiple agenda items not making the cut).

Thanks,
Acee



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