IETF Logo Mail Archive

Re: [sidr] [Idr] AS_SET depreciation (RFC6472) and BGP multipath

Robert Raszuk <robert@raszuk.net> Wed, 28 March 2012 16:29 UTC

Return-Path: <robert@raszuk.net>
X-Original-To: sidr@ietfa.amsl.com
Delivered-To: sidr@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5346921E81C3 for <sidr@ietfa.amsl.com>; Wed, 28 Mar 2012 09:29:46 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.4
X-Spam-Level:
X-Spam-Status: No, score=-2.4 tagged_above=-999 required=5 tests=[AWL=0.199, BAYES_00=-2.599]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PCTPDVFwp3x5 for <sidr@ietfa.amsl.com>; Wed, 28 Mar 2012 09:29:45 -0700 (PDT)
Received: from mail1310.opentransfer.com (mail1310.opentransfer.com [76.162.254.103]) by ietfa.amsl.com (Postfix) with ESMTP id 2B7EE21E819E for <sidr@ietf.org>; Wed, 28 Mar 2012 09:29:44 -0700 (PDT)
Received: (qmail 29028 invoked by uid 399); 28 Mar 2012 16:29:44 -0000
Received: from unknown (HELO ?10.0.1.4?) (pbs:robert@raszuk.net@79.141.15.165) by mail1310.opentransfer.com with ESMTPM; 28 Mar 2012 16:29:44 -0000
X-Originating-IP: 79.141.15.165
Message-ID: <4F733C79.8080600@raszuk.net>
Date: Wed, 28 Mar 2012 18:29:45 +0200
From: Robert Raszuk <robert@raszuk.net>
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:11.0) Gecko/20120312 Thunderbird/11.0
MIME-Version: 1.0
To: Christopher Morrow <morrowc.lists@gmail.com>
References: <4F72166F.6080503@raszuk.net> <42776E13-8FFC-485F-8EC2-C93D047C3F6D@tony.li> <4F7229A0.1070109@raszuk.net> <7309FCBCAE981B43ABBE69B31C8D21391B3E908892@EUSAACMS0701.eamcs.ericsson.se> <alpine.LFD.2.02.1203281401410.2692@jamaica.dcs.gla.ac.uk> <7309FCBCAE981B43ABBE69B31C8D21391B3EBFD895@EUSAACMS0701.eamcs.ericsson.se> <FBFDBAE5-9BF8-4708-9240-B775CAF46D56@raszuk.net> <7309FCBCAE981B43ABBE69B31C8D21391B3EBFD924@EUSAACMS0701.eamcs.ericsson.se> <alpine.LFD.2.02.1203281618090.2692@jamaica.dcs.gla.ac.uk> <CAL9jLaYqMwXVNKsHuBf_r8h==CGoee+D9k89Q4AZqT49jOQK1A@mail.gmail.com>
In-Reply-To: <CAL9jLaYqMwXVNKsHuBf_r8h==CGoee+D9k89Q4AZqT49jOQK1A@mail.gmail.com>
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 7bit
Cc: "idr@ietf.org List" <idr@ietf.org>, Paul Jakma <paul@jakma.org>, sidr wg list <sidr@ietf.org>
Subject: Re: [sidr] [Idr] AS_SET depreciation (RFC6472) and BGP multipath
X-BeenThere: sidr@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
Reply-To: robert@raszuk.net
List-Id: Secure Interdomain Routing <sidr.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/sidr>, <mailto:sidr-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/sidr>
List-Post: <mailto:sidr@ietf.org>
List-Help: <mailto:sidr-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/sidr>, <mailto:sidr-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 28 Mar 2012 16:29:46 -0000

Chris,

> it seems that to date, folk can't seem to figure out the aggregation
> bits, maybe that will change in the future.

Let me point out that IBGP multipath is used very commonly today. When 
you do that you need to advertise something meaningful out to your 
neighbors. Yes that is open IDR topic no one seems to be actively 
working on. However let's not block any work on it just because SIDR can 
not handle some solutions.

Are we going to freeze any AS_PATH modifications by operator's policy 
too ? I mentioned replace-as which all major vendors support. There can 
be more knobs like this coming in the future.

CDNI is just getting extended to BGP (new SAFI) and they have their own 
uses for AS_PATH being sort of over the top of classic ASes.

Regards,
R.

v2.29.0 | Report a Bug | By Email | System Status