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Re: [GROW] New Version Notification for draft-ymbk-grow-bgp-collector-communities-01.txt

Jeffrey Haas <jhaas@pfrc.org> Fri, 18 September 2015 14:24 UTC

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Date: Fri, 18 Sep 2015 10:28:00 -0400
From: Jeffrey Haas <jhaas@pfrc.org>
To: Job Snijders <job@instituut.net>
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Subject: Re: [GROW] New Version Notification for draft-ymbk-grow-bgp-collector-communities-01.txt
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On Tue, Sep 08, 2015 at 05:15:38PM +0200, Job Snijders wrote:
> I suggest to take the codepoint(s) from 0xFFFF0000 - 0xFFFFFFFF
> http://www.iana.org/assignments/bgp-well-known-communities/bgp-well-known-communities.xhtml
> as we then at least have made the most effort to avoid clashes with
> locally significant values.

I'm weakly supportive of this overall proposal.  

One issue with going to well known communities is that the role of a given
route may vary depending on provider.  To that end, a well known community
can't really help.  Extended communities could work, but mechanisms for
arbitrary extended communities aren't well implemented.

What seems to be needed more than a standard as to what communities everyone
should use is a method of exchanging the mappings for a given provider.
Wide communities are intended to have some of this semantic, but the
mechanism to exchange the mappings is undefined at this time.

-- Jeff

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