Re: [Idr] Mirja Kühlewind's No Objection on draft-ietf-idr-ix-bgp-route-server-11: (with COMMENT)

Marco Marzetti <marco@lamehost.it> Mon, 20 June 2016 21:43 UTC

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Date: Mon, 20 Jun 2016 23:43:52 +0200
From: Marco Marzetti <marco@lamehost.it>
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On 2016-06-20 20:24, Robert Raszuk wrote:
> Jeff,
> 
>> I am somewhat late in chiming in on this thread, but I'm also
>> supportive of
>> making this a MUST.
> 
> ​As discussed before I disagree. Injecting AS(es) is a simplest form
> of making some paths less preferable then others. ​And per peer
> policy asking RS send my paths to peers X,Y, Z with + 4 ASes, but to
> peer A, B, C do not prepend as Niels points out maybe there already
> today.
> 
>> If you're intending to inject your AS number into the path, then
>> you're
>> acting as a standard BGP speaker, not a Route Server.
> 
> ​To me the Route Server is a Route Reflector for EBGP sessions. It
> really does not matter if you are messing with AS_PATH there or not.
> What actually matters ​is that you do not set next hop to yourself
> there.

I would like to underline that this draft depicts the behavior of a 
route server in an IXP environment.
And, for many reasons, an IXP should be as transparent as possible when 
it comes to route propagation.

-- 
Marco