[Iccrg] Support requested: Start of WGLC for Tunnelling of ECN (draft-ietf-tsvwg-ecn-tunnel)

[Bob Briscoe]

ICCRG folks,

Note the ecn-tunnel draft is now in w-g last call. Having a single 
consistent treatment of the ECN field through tunnels is important 
for using ECN in future.

The TSVWG Chairs are looking for messages of support (or not) on the 
tsvwg at ietf.org list.

Tunnel behaviour has diverged in its treatment of the ECN field.
* At ingress, IPsec tunnels copy ECN, but some non-IPsec tunnels do a 
partial copy. This draft proposes to harmonise all tunnelling so the 
ECN field is copied, as IPsec does.
* At egress, this draft also ensures tunnels can support one or two 
severity levels of congestion notification. This adds support for PCN 
and would ease deployment of e2e approaches like VCP (Stoica's "One 
more bit is enough") in future.

Preferably post your messages to tsvwg before Monday's TSVWG session, 
altho you have until 12 Apr.

See below, which includes a link to the draft for the whole story.


Cheers



Bob


>Date: Fri, 12 Mar 2010 15:03:45 +0000
>From: Gorry Fairhurst <gorry at erg.abdn.ac.uk>
>Reply-To: gorry at erg.abdn.ac.uk
>Organization: The University of Aberdeen is a charity registered in Scotland,
>  No SC013683.
>To: tsvwg WG <tsvwg at ietf.org>
>CC: Bob Briscoe <rbriscoe at jungle.bt.co.uk>,
>         tsvwg chair <tsvwg-chairs at tools.ietf.org>
>Subject: Start of WGLC for Tunnelling of ECN  (draft-ietf-tsvwg-ecn-tunnel)
>
>
>This email announces the beginning of a working group last call for
>draft-ietf-tsvwg-ecn-tunnel-08, "Tunnelling of Explicit Congestion 
>Notification". This document is now thought by the authors to be 
>ready to proceed to be published as a Proposed Standard. Please send 
>any comments to the TSVWG list.
>
>The draft is available at:
>https://datatracker.ietf.org/doc/draft-ietf-tsvwg-ecn-tunnel/
>
>The document will  be forwarded in parallel to the Security Directorate
>for a Security Review.
>
>The last call will run for FOUR weeks, ending Monday, 12th April 
>2010 (since it will cover an IETF meeting period). Emails saying "I 
>support" or "I don't support" are also most helpful in judging the consensus.
>
>James and Gorry
>(TSVWG Chairs)
>
>
>P.S. A copy of this mail will be sent also to the PCN WG for info.

________________________________________________________________
Bob Briscoe,                                BT Innovate & Design