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

Job Snijders <job@instituut.net> Tue, 08 September 2015 15:15 UTC

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Date: Tue, 08 Sep 2015 17:15:38 +0200
From: Job Snijders <job@instituut.net>
To: Randy Bush <randy@psg.com>
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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 05:05:48PM +0200, Randy Bush wrote:
> >> I do not feel comfortable overloading locally administrated bits with
> >> something that represents global significance. The 64xxx communites
> >> come dangerously close to codepoints we use internally. I'd prefer
> >> that the local portion of BGP Communities remains truely local.
> > 
> > only problem is that completely blows the purpose of the exercise, a
> > global tagging to help ops and researchers be more sure of what they
> > are seeing in the collectors.
> 
> i think i misunderstood you.  you are suggesting using 42-44 or
> whatever, not 65000 space.  sure.  i do not care what the numbers
> are.

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.

At the very least I see operational value in having a well-known
community to tag "customer" prefixes with, this is something I'd use
internally, in public documentation and BCOPs/guides how to set up a BGP
transit network. A "CUSTOMER" community could benefit a group braoder
then the research community.

Kind regards,

Job