[PWE3] Header Compression over MPLS & Allison's DISCUSS Comment on PWE3 IANA Allocation Draft
"Ash, Gerald R \(Jerry\), ALABS" <gash@att.com> Wed, 19 October 2005 14:34 UTC
Received: from localhost.localdomain ([127.0.0.1] helo=megatron.ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1ESF1o-0006gH-0v; Wed, 19 Oct 2005 10:34:52 -0400
Received: from odin.ietf.org ([132.151.1.176] helo=ietf.org) by megatron.ietf.org with esmtp (Exim 4.32) id 1ESF1m-0006dg-0k; Wed, 19 Oct 2005 10:34:50 -0400
Received: from ietf-mx.ietf.org (ietf-mx [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA20620; Wed, 19 Oct 2005 10:34:41 -0400 (EDT)
Received: from mail121.messagelabs.com ([216.82.241.195]) by ietf-mx.ietf.org with smtp (Exim 4.43) id 1ESFDS-0005PT-B1; Wed, 19 Oct 2005 10:46:58 -0400
X-VirusChecked: Checked
X-Env-Sender: gash@att.com
X-Msg-Ref: server-5.tower-121.messagelabs.com!1129731368!6902650!14
X-StarScan-Version: 5.5.9.1; banners=-,-,-
X-Originating-IP: [192.128.133.132]
Received: (qmail 24517 invoked from network); 19 Oct 2005 14:16:32 -0000
Received: from unknown (HELO attrh3i.attrh.att.com) (192.128.133.132) by server-5.tower-121.messagelabs.com with SMTP; 19 Oct 2005 14:16:32 -0000
Received: from kcclust06evs1.ugd.att.com (135.38.164.88) by attrh3i.attrh.att.com (7.2.052) id 4351BDFD0020EF13; Wed, 19 Oct 2005 10:34:31 -0400
X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0
Content-class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: quoted-printable
Date: Wed, 19 Oct 2005 09:34:30 -0500
Message-ID: <9473683187ADC049A855ED2DA739ABCA09FA94C3@KCCLUST06EVS1.ugd.att.com>
Thread-Topic: Header Compression over MPLS & Allison's DISCUSS Comment on PWE3 IANA Allocation Draft
Thread-Index: AcXUAahztnUWff60SiusZgynrxA9hQADnObwACnOdoA=
From: "Ash, Gerald R (Jerry), ALABS" <gash@att.com>
To: mankin@psg.com, IETF AVT WG <avt@ietf.org>, pwe3 <pwe3@ietf.org>, rohc@ietf.org
X-Spam-Score: 0.0 (/)
X-Scan-Signature: b4a0a5f5992e2a4954405484e7717d8c
Content-Transfer-Encoding: quoted-printable
Cc: "Ash, Gerald R (Jerry), ALABS" <gash@att.com>, "Lars-Erik Jonsson (LU/EAB)" <lars-erik.jonsson@ericsson.com>, "Malis, Andrew G." <Andy.Malis@Tellabs.com>, "Hand, James C, ALABS" <jameshand@att.com>, "Goode, B (Bur), ALABS" <bgoode@att.com>, "raymond.zhang" <raymond.zhang@bt.infonet.com>
Subject: [PWE3] Header Compression over MPLS & Allison's DISCUSS Comment on PWE3 IANA Allocation Draft
X-BeenThere: pwe3@ietf.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Pseudo Wires Edge to Edge <pwe3.ietf.org>
List-Unsubscribe: <https://www1.ietf.org/mailman/listinfo/pwe3>, <mailto:pwe3-request@ietf.org?subject=unsubscribe>
List-Post: <mailto:pwe3@ietf.org>
List-Help: <mailto:pwe3-request@ietf.org?subject=help>
List-Subscribe: <https://www1.ietf.org/mailman/listinfo/pwe3>, <mailto:pwe3-request@ietf.org?subject=subscribe>
Sender: pwe3-bounces@ietf.org
Errors-To: pwe3-bounces@ietf.org
Hi Allison, All, FYI. Allison made a DISCUSS comment on the PWE3 IANA Allocation draft http://ietf.org/internet-drafts/draft-ietf-pwe3-iana-allocation-13.txt that directly affects the Header Compression over MPLS protocol draft http://ietf.org/internet-drafts/draft-ietf-avt-hc-over-mpls-protocol-01. txt. See Allison's comments at https://datatracker.ietf.org/public/pidtracker.cgi?command=print_ballot& ballot_id=1697&filename=draft-ietf-pwe3-iana-allocation, which quoted here again: <DISCUSS START> "Separate point: The initial registrations include the following: 0x001A cTCP (RFC1144) Transport Header-compressed Packets 0x001B IPHC (RFC2507) Transport Header-compressed Packets 0x001C cRTP (RFC2508) Transport Header-compressed Packets 0x001D ROHC (RFC3095) Transport Header-compressed Packets 0x001E eCRTP (RFC3545) Transport Header-compressed Packets These are premature registrations, as the mapping of these header compression technologies onto the PWE3 architecture hasn't been done, and it's not clear how it should be done correctly in each case. There is chartered work in AVT for a ROHC/eCRTP project that could result in such a spec, but it's a fairly complex job. Two of the protocols, cRTP and RFC1144 have bad flaws for multi-hop and should really not be used on a PW (they will break). I don't know who would work on the IPHC for PW, and how it is controlled there. Carsten Bormann is the right guy to do that work correctly; I've asked him, and his ROHC co-chair, Lars-Erik Johnsson, to give further comments for future reference. Bottom line / Expert Review: these registrations must be backed up by appropriate specs before being made, and so need to be withdrawn now." <DISCUSS END> The PW Type values are already contained in Section 4.1 and Section 7 of the Header Compression over MPLS Protocol I-D. They were agreed to some time ago by PWE3, then included in the draft, and discussed at the IETF-63 AVT meeting. It looks like we'll also have to focus now on ECRTP and ROHC in the draft, and remove proposed support for cTCP, IPHC, and cRTP. Carsten Bormann made a comment on RFC1144 problems at IETF-63, but I wasn't aware that cRTP and IPHC were also in the "problem" category. In particular, cRTP is widely deployed and IMO should be supported for Header Compression over MPLS. Any comments or suggestions? Thanks, Jerry _______________________________________________ pwe3 mailing list pwe3@ietf.org https://www1.ietf.org/mailman/listinfo/pwe3
- [PWE3] Header Compression over MPLS & Allison's D… Ash, Gerald R (Jerry), ALABS
- [PWE3] Re: Header Compression over MPLS & Allison… Allison Mankin
- Re: [PWE3] Header Compression over MPLS & Allison… Stewart Bryant
- [PWE3] RE: Header Compression over MPLS & Allison… Ash, Gerald R (Jerry), ALABS
- [PWE3] RE: Header Compression over MPLS & Allison… Ash, Gerald R (Jerry), ALABS
- [PWE3] Re: Header Compression over MPLS & Allison… Allison Mankin
- [PWE3] Re: Header Compression over MPLS & Allison… Magnus Westerlund
- [PWE3] Re: Header Compression over MPLS & Allison… Magnus Westerlund
- Re: [PWE3] Re: Header Compression over MPLS & All… Andrew G. Malis
- Re: [PWE3] Re: Header Compression over MPLS & All… Andrew G. Malis
- Re: [PWE3] Re: Header Compression over MPLS & All… Magnus Westerlund
- Re: [PWE3] Re: Header Compression over MPLS & All… Magnus Westerlund
- Re: [PWE3] Re: Header Compression over MPLS & All… Andrew G. Malis