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Re: [Idr] AD Review of draft-ietf-idr-large-community-09

Job Snijders <job@ntt.net> Fri, 02 December 2016 15:45 UTC

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Date: Fri, 02 Dec 2016 16:44:54 +0100
From: Job Snijders <job@ntt.net>
To: Michael H Lambert <lambert@psc.edu>
Message-ID: <20161202154454.GH47164@Vurt.local>
References: <CE1331E4-3ECA-41D7-801F-05519778E8DA@cisco.com> <94f48779-14c8-0ec0-93ef-69eeba49e5be@gmail.com> <8B6BA07A-D636-4D8C-8B02-A5CB05538AAF@cisco.com> <AAC9E38F-BF0D-41D7-8871-9B89D31BC37B@juniper.net> <8A889AAA-05C6-4036-B05A-316FEB2C84E2@psc.edu>
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Cc: "idr@ietf.org" <idr@ietf.org>, "draft-ietf-idr-large-community@ietf.org" <draft-ietf-idr-large-community@ietf.org>, "idr-chairs@ietf.org" <idr-chairs@ietf.org>
Subject: Re: [Idr] AD Review of draft-ietf-idr-large-community-09
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On Fri, Dec 02, 2016 at 10:40:25AM -0500, Michael H Lambert wrote:
> > On 2 Dec 2016, at 08:57, John G. Scudder <jgs@juniper.net> wrote:
> > 
> > On Dec 2, 2016, at 8:46 AM, Alvaro Retana (aretana) <aretana@cisco.com> wrote:
> >> Removing and ignoring are obviously different things…  The text
> >> above is fine with me, but I would ask: what do the current
> >> implementations do?  If they remove (as originally specified), then
> >> I would suggest you keep that.
> > 
> > What do you think would be a good minimal change to clarify? How
> > about changing the word "duplicate" to "redundant"?
> > 
> > OLD:
> >   Duplicate BGP Large Community values MUST NOT be transmitted.  A
> >   receiving speaker MUST silently remove duplicate BGP Large Community
> >   values from a BGP Large Community attribute.
> > 
> > NEW:
> >   Duplicate BGP Large Community values MUST NOT be transmitted.  A
> >   receiving speaker MUST silently remove redundant BGP Large Community
> >   values from a BGP Large Community attribute.
> 
> Just for clarification:  Does "speaker" in this context refer to a BGP
> speaker implementing large communities, and, by inference, excludes
> BGP speakers not supporting large communities?

This only applies to BGP speakers who understand the Large Community. To
speakers without Large Community support, it will just be an optional
transitive attribute which is passed on in verbatim.

Kind regards,

Job

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