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

Robert Raszuk <robert@raszuk.net> Wed, 28 March 2012 16:43 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 2F37121E8258 for <sidr@ietfa.amsl.com>; Wed, 28 Mar 2012 09:43:45 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.425
X-Spam-Level:
X-Spam-Status: No, score=-2.425 tagged_above=-999 required=5 tests=[AWL=0.175, 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 8vG3YNdIc9DP for <sidr@ietfa.amsl.com>; Wed, 28 Mar 2012 09:43:44 -0700 (PDT)
Received: from mail1310.opentransfer.com (mail1310.opentransfer.com [76.162.254.103]) by ietfa.amsl.com (Postfix) with ESMTP id 4430321E8234 for <sidr@ietf.org>; Wed, 28 Mar 2012 09:43:44 -0700 (PDT)
Received: (qmail 15704 invoked by uid 399); 28 Mar 2012 16:43:41 -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 16:43:41 -0000
X-Originating-IP: 79.141.15.165
Message-ID: <4F733FBE.1020902@raszuk.net>
Date: Wed, 28 Mar 2012 18:43:42 +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> <4F733C79.8080600@raszuk.net> <CAL9jLabVcWMtpu8usUS5w_BVPCG8ihvDcVjWbhnj_u6H-cdZkw@mail.gmail.com>
In-Reply-To: <CAL9jLabVcWMtpu8usUS5w_BVPCG8ihvDcVjWbhnj_u6H-cdZkw@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 16:43:45 -0000

>> 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.
>
> replace as i think is dealt with .... sign again and pcount=0 and move along.

replace-as allows to replace any arbitrary match of list of ASes in the 
AS_PATH by your own AS. Does not need to be the last one.

I don't think SIDR has a solution to deal with such policy.

Best regards,
R.