Re: [trill] Adoption? draft-eastlake-trill-ecn-support-01: Idea thought up after -00

"Susan Hares" <> Sun, 17 July 2016 04:14 UTC

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From: "Susan Hares" <>
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Cc: 'Donald Eastlake' <>
Subject: Re: [trill] Adoption? draft-eastlake-trill-ecn-support-01: Idea thought up after -00
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We have some trill developers who will be here.   I'll chat with Donald and
the developers. 




From: trill [] On Behalf Of Bob Briscoe
Sent: Saturday, July 16, 2016 10:24 AM
To: Susan Hares;;
Cc: 'Donald Eastlake'
Subject: Re: [trill] Adoption? draft-eastlake-trill-ecn-support-01: Idea
thought up after -00



OK - will look out for you and Donald and try and make sure we're all in a
corridor with identical space-time coordinates at some point.

I'm interested to see if anyone will implement ECN support in trill.
So, I'm hoping that adoption might make it easier for an implementer to make
the case for working on this.


On 16/07/16 06:02, Susan Hares wrote:



This is exciting work .    It is good to get it into WG adoption . Let's
chat early in the week so we can determine if when we should start the WG
adoption call.




From: trill [] On Behalf Of Bob Briscoe
Sent: Friday, July 15, 2016 4:11 PM
Cc: Donald Eastlake
Subject: [trill] Adoption? draft-eastlake-trill-ecn-support-01: Idea thought
up after -00


Sue & Jon (as trill chairs) and TRILLers generally,

I'm not familiar with custom & practice in the TRILL WG, but is it
appropriate to discuss adoption of this draft yet?

ECN was added to IP in 2001 (Proposed Std) and is now finally starting to
happen. Network support is confined to data centres at the mo. And
bottlenecks on the public Internet including IXPs need to be next. Hence the
need for a spec of how to support ECN in TRILL.

Some of you will recall in Buenos Aires Donald & I presented 3 ways of
solving the problem of supporting ECN in TRILL.
#1 violated layering , so was summarily rejected. 
#2 was the only one written up in draft-00
#3 was much better, but only thought up after we submitted draft-00.

In draft-01, we've completely replaced solution #2 with the preferred
solution #3.
There are no holes in the text now - it's nice and simple and all ready to

It's fairly terse, so it might need more explanation.
Pls read, comment, bash. 



On 08/07/16 17:58, Donald Eastlake wrote:

--------- Forwarded message ----------

From: <>
Date: Fri, Jul 8, 2016 at 12:57 PM
Subject: New Version Notification for
To: "Donald E. Eastlake 3rd" <>om>, Bob Briscoe

A new version of I-D, draft-eastlake-trill-ecn-support-01.txt
has been successfully submitted by Donald E. Eastlake and posted to the
IETF repository.

Name:           draft-eastlake-trill-ecn-support
Revision:       01
Title:          TRILL: ECN (Explicit Congestion Notification) Support
Document date:  2016-07-08
Group:          Individual Submission
Pages:          18

   Explicit congestion notification (ECN) allows a forwarding element to
   notify downstream devices, including the destination, of the onset of
   congestion without having to drop packets. This document extends this
   capability to TRILL switches, including integration with IP ECN.

Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at

The IETF Secretariat


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Bob Briscoe                     

Bob Briscoe