Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route-server-10.txt> (Internet Exchange BGP Route Server) to Proposed Standard
Marco Marzetti <marco@lamehost.it> Wed, 01 June 2016 12:46 UTC
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To: Robert Raszuk <robert@raszuk.net>
Subject: Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route-server-10.txt> (Internet Exchange BGP Route Server) to Proposed Standard
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Date: Wed, 01 Jun 2016 14:46:19 +0200
From: Marco Marzetti <marco@lamehost.it>
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Cc: idr wg <Idr@ietf.org>, rraszuk@gmail.com, IETF Discussion <ietf@ietf.org>, Nick Hilliard <nick@foobar.org>
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On 2016-06-01 14:35, Robert Raszuk wrote: > Hi Marco, > > Let's also observe that route server we are defining here which > effectively "reflects" between EBGP sessions has much more wider use > then Internet Exchange points. > > There is more architectures which use EBGP and for scale full meshing > them is a headache (at least till we progress the auto discovery > proposal further). And some of those ASes may be private hence > inserting your AS during private removal is rather a must. > > I would recommend that we focus on the recommendation how to build IX > in the companion draft in GROW. Here in IDR we should rather > accommodate all use cases. > > Many thx, > Robert > > On Wed, Jun 1, 2016 at 2:12 PM, Marco Marzetti <marco@lamehost.it> > wrote: > >> On 2016-06-01 13:17, Nick Hilliard wrote: >> Marco Marzetti wrote: >> I agree with you that you can run a route server and insert your >> ASn in >> the path, but i think that is a lack of common sense which brings >> only >> contraries and no benefits. >> >> About RFC2119: It says that "SHOULD NOT" implies a valid reason to >> accept a behavior, but i can't find any. >> >> I agree that it is not a clever thing to do. The valid reason to >> accept >> the behaviour is that it works in practice: some IXPs have done this >> in >> production, in many cases for years. >> >> There is a secondary reason: some rs client bgp stacks don't support >> the >> option to accept an AS path from the RS where the leftmost entry on >> the >> AS path != peeras. >> >> These are not "good" reasons in the sense that they mandate >> behaviour >> which is suboptimal, but they are valid reasons. >> >> Nick > > Nick, > > I think that we should define a standard that addresses and corrects > those non-clever behaviors rather than embrace them. > > My point is: even if they work in the real world, they do because of > the workarounds that other people put in place and they bring no > benefits. > > Regards > > -- > Marco Dear Robert, Noted, thanks. Hence "SHOULD NOT" is the right choice. Regards -- Marco
- Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route… Marco Marzetti
- Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route… Marco Marzetti
- Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route… Greg Skinner
- Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route… Marco Marzetti
- Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route… Nick Hilliard
- Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route… Marco Marzetti
- Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route… Nick Hilliard
- Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route… Marco Marzetti
- Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route… David Huberman
- Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route… Robert Raszuk
- Re: [Idr] Last Call: <draft-ietf-idr-ix-bgp-route… Marco Marzetti