Re: [Idr] Benoit Claise's Discuss on draft-ietf-idr-large-community-11: (with DISCUSS and COMMENT)

heasley <heas@shrubbery.net> Wed, 04 January 2017 15:46 UTC

Return-Path: <heas@shrubbery.net>
X-Original-To: idr@ietfa.amsl.com
Delivered-To: idr@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 80415129463; Wed, 4 Jan 2017 07:46:53 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -7.302
X-Spam-Level:
X-Spam-Status: No, score=-7.302 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RP_MATCHES_RCVD=-3.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id u5-3VpMPctAr; Wed, 4 Jan 2017 07:46:52 -0800 (PST)
Received: from guelah.shrubbery.net (guelah.shrubbery.net [198.58.5.1]) by ietfa.amsl.com (Postfix) with ESMTP id 733F41295DB; Wed, 4 Jan 2017 07:46:39 -0800 (PST)
Received: by guelah.shrubbery.net (Postfix, from userid 7053) id 54C35876D8; Wed, 4 Jan 2017 15:46:39 +0000 (UTC)
Date: Wed, 4 Jan 2017 15:46:39 +0000
From: heasley <heas@shrubbery.net>
To: Benoit Claise <bclaise@cisco.com>
Message-ID: <20170104154639.GG21501@shrubbery.net>
References: <148354156226.13001.17853336045471596840.idtracker@ietfa.amsl.com> <748483d7-df5c-e961-15f5-5aa76b784a7e@gmail.com> <af1e79a9-c188-23e4-3e45-0acacac049c8@cisco.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <af1e79a9-c188-23e4-3e45-0acacac049c8@cisco.com>
X-PGPkey: http://www.shrubbery.net/~heas/public-key.asc
X-note: live free, or die!
X-homer: i just want to have a beer while i am caring.
X-Claimation: an engineer needs a manager like a fish needs a bicycle
X-reality: only YOU can put an end to the embarrassment that is Tom Cruise
User-Agent: Mutt/1.6.1 (2016-04-27)
Archived-At: <https://mailarchive.ietf.org/arch/msg/idr/xMkg8lBGWhm8QujneNR-Hn2LdU8>
Cc: idr@ietf.org, idr-chairs@ietf.org, rick.casarez@gmail.com, draft-ietf-idr-large-community@ietf.org, The IESG <iesg@ietf.org>
Subject: Re: [Idr] Benoit Claise's Discuss on draft-ietf-idr-large-community-11: (with DISCUSS and COMMENT)
X-BeenThere: idr@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: Inter-Domain Routing <idr.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/idr>, <mailto:idr-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/idr/>
List-Post: <mailto:idr@ietf.org>
List-Help: <mailto:idr-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/idr>, <mailto:idr-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 04 Jan 2017 15:46:53 -0000

Wed, Jan 04, 2017 at 04:39:25PM +0100, Benoit Claise:
> Ignas,
> > Hi Benoit,
> >
> > Thank you for reviewing.
> >
> > Global Administrator field is a 4 octet integer that is used to carry 
> > AS number but it is not mandatory to interpret it as an AS number only 
> > (while a typical use case is for carrying AS number) - two peers can 
> > agree on any value that has meaning between those peers. 
> > Representation on the wire is in network byte order, and 2 byte AS 
> > number will get naturally padded with two zero bytes in front. 
> > Virtually all deployments today are AS4 capable and use AS4 encoding 
> > even for AS number values that fit into 16 bit value range therefore 
> > AS number is a 4 octet entity already.
> Thanks Ignas.
> Then this sentence in the abstract "The attribute is suitable for use 
> with four-octet ASNs." is misleading, right? At least to me.
> The attribute is suitable for four-octets ASNs and two-octets ASNs 
> encoded in four-octets.
> This would be more in line with "This field SHOULD be an Autonomous 
> System Number (ASN)" later on.

No, because it is in reference to rfc1997, which is not usable with AS4.