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Re: [Idr] draft-dong-idr-node-target-ext-comm-05.txt - WG Adoption and IPR call (9/27 to 10/11/2022)

tom petch <ietfc@btconnect.com> Thu, 29 September 2022 15:33 UTC

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From: tom petch <ietfc@btconnect.com>
To: Robert Raszuk <robert@raszuk.net>
CC: Susan Hares <shares@ndzh.com>, "idr@ietf.org" <idr@ietf.org>, "Van De Velde, Gunter (Nokia - BE/Antwerp)" <gunter.van_de_velde@nokia.com>
Thread-Topic: [Idr] draft-dong-idr-node-target-ext-comm-05.txt - WG Adoption and IPR call (9/27 to 10/11/2022)
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Date: Thu, 29 Sep 2022 15:33:23 +0000
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Subject: Re: [Idr] draft-dong-idr-node-target-ext-comm-05.txt - WG Adoption and IPR call (9/27 to 10/11/2022)
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From: Robert Raszuk <robert@raszuk.net>
Sent: 29 September 2022 16:29

Hi Tom,

> Is the term ASBR well-understood in the context of BGP

It is a very well known term and widely used across many documents in the context of BGP protocol. Sometimes you will see folks abbreviating it to "BR", but the BGP speaker which talks EBGP is almost always called Autonomous System Border Router (I used word "almost" as there is an exception - confederations).

Robert
Thanks for that.  If the author used EBGP, I would have known what he meant!  I did search the BGP protocol RFC and was struck by its absence except for the one RFC I mentioned.  In OSPF it is well defined and I would not have commented on it.

Tom Petch

Thx,
Robert.



On Thu, Sep 29, 2022 at 10:23 AM tom petch <ietfc@btconnect.com<mailto:ietfc@btconnect.com>> wrote:
From: Idr <idr-bounces@ietf.org<mailto:idr-bounces@ietf.org>> on behalf of Susan Hares <shares@ndzh.com<mailto:shares@ndzh.com>>
Sent: 27 September 2022 18:30

This begins a 2 week WG adoption and IPR call for draft-dong-idr-node-target-ext-comm-05.txt.
https://datatracker.ietf.org/doc/draft-dong-idr-node-target-ext-comm/

<tp>
The protocol depends in part on whether or not a router is an ASBR.  I am used to seeing that term used in the context of OSPF and not of BGP.  I did find a usage in RFC7705 but note that that RFC felt it necessary to explain what an ASBR was.  Is the term ASBR well-understood in the context of BGP (as opposed to OSPF)?

I find the IANA Considerations imprecise.  It asks for a new sub-type in a registry whose name is not present in IANA; there is one that is close (but no cigar).

Likewise, it talks of 'registry of the "BGP Extended Communities"  registry'.  This is wrong on two counts.  A registry is part of a registry group, not part of a registry (prior to recent discussions on the Last Call list I would have just said 'group').  Second, there are no BGP registry groups and that identifier does not appear anywhere on the IANA website AFAICT.

Tom Petch

The authors should respond to this email with an IPR statement.

The WG should consider in their discussion:
1) Will this new  transitive extended community help
in operational networks?

2) What conflicts does this new Extended Community have
with other functions in general BGP route distribution or
VPNs (EVPN, IPVPN)?

3) do you have any concern about the text in the draft?

Cheerily, Sue

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