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Re: [Idr] draft-walton-bgp-add-paths-06.txt as IDR WG document

Danny McPherson <danny@tcb.net> Fri, 05 December 2008 16:27 UTC

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From: Danny McPherson <danny@tcb.net>
To: Robert Raszuk <raszuk@juniper.net>, Uli Bornhauser <ub@cs.uni-bonn.de>
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Cc: Yakov Rekhter <yakov@juniper.net>, "Horneffer, Martin" <Martin.Horneffer@t-com.net>, Inter-Domain Routing List <idr@ietf.org>
Subject: Re: [Idr] draft-walton-bgp-add-paths-06.txt as IDR WG document
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On Dec 4, 2008, at 5:36 AM, Robert Raszuk wrote:

> Hi Uli,
>
> I was assuming that RR would advertise all paths not just best and  
> second best.
>
> But you are in general very correct that regardless of what RR  
> propagates via IBGP domain the rtr_id of the advertising peer is  
> still subject to be compared before the attr_set hence we have an  
> issue.
>
> In full mesh ibgp that would not be the problem, but in the RR case  
> it still  think is.
>
> I propose we talk offline and try to come up together on the best  
> solution considering your work already in this space.

As an aside, this is another reason why comparing MEDs
for a prefix with paths learned from different ASes is
a bad idea.

-danny
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