nanog mailing list archives

Re: Communities


From: Jeffrey Haas <jhaas () nexthop com>
Date: Thu, 18 Oct 2001 12:39:25 -0400


On Tue, Oct 16, 2001 at 01:00:45PM -0400, alex () yuriev com wrote:
On a side note, A's possibilities of influencing inbound routing
decisions - given that B acts on communities set by A, like `Prepend own
ASN a few times before sending over just this link' or `Don't announce
to D at all' - are already technically possible.  Frankly, if I were B

Correct.  And a few upstreams allow this.

It is very simple to do. Create a set of 'advertise-me' communities and
'pad-me' communities.

Although it did a few other things as well, an attempt at standardizing
parts of this failed:

draft-bonaventure-bgp-redistribution-01

This draft included:
IDRP style DIST_LIST_INCL, DIST_LIST_EXCL
Proxied NO_EXPORT
Proxied Prepending

The IDRP-style DIST_LISTs seem to generate most of the heat.  We never
got a firm feel for why the other two componenents were disliked.

Geoff Huston proposed draft-huston-nopeer-00.txt to attempt to address
some of the route propagation issues that the DIST_LISTs were intended
to address.

Alex

-- 
Jeff Haas 
NextHop Technologies


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