Subject: [tcpm] Summary of diff for draft-ietf-tcpm-generalized-ecn-07.txt

From: Bob Briscoe <[email-masked]>
Date: Tue, 16 Feb 2021 20:59:11 +0000

tcpm-ers,

I've just submitted a new rev of the ECN++ draft for the experimental 
track. The draft and diff are linked below as always.

Here's a brief bullet list of the main changes. No significant changes, 
as would be expected at this stage. But thanks for the useful comments 
that led to these, particularly those from Richard with the benefit of 
his implementation experience in FreeBSD.

* S.1 Intro
     Called out in the text (not just the header block) that this draft 
obsoletes RFC 5562 (aka ECN+) and explained why (ECN++ is a superset).
* S.3.2.6  RST (Send)
     Advised how not to leak internals of TCP state machine by marking 
all packets of each type consistently
     (and ack'd Richard Schef.)
* S.3.3.2. SYN (Receive)
     When recommending servers accept SYNs with non-zero IP/ECN, more 
precise advice on detecting ECN mangling
     (following offlist discussion with Mirja).
* S.4.4.1.  Mechanisms to Respond to CE-Marked Pure ACKs
    More precise wording for the rationale on feedback of congestion 
markings on pure ACKs

Regards

Bob

On 16/02/2021 20:33, [email-masked] wrote:
> A new version of I-D, draft-ietf-tcpm-generalized-ecn-07.txt
> has been successfully submitted by Bob Briscoe and posted to the
> IETF repository.
>
> Name:		draft-ietf-tcpm-generalized-ecn
> Revision:	07
> Title:		ECN++: Adding Explicit Congestion Notification (ECN) to TCP Control Packets
> Document date:	2021-02-16
> Group:		tcpm
> Pages:		47
> URL:            https://www.ietf.org/archive/id/draft-ietf-tcpm-generalized-ecn-07.txt
> Status:         https://datatracker.ietf.org/doc/draft-ietf-tcpm-generalized-ecn/
> Htmlized:       https://datatracker.ietf.org/doc/html/draft-ietf-tcpm-generalized-ecn
> Htmlized:       https://tools.ietf.org/html/draft-ietf-tcpm-generalized-ecn-07
> Diff:           https://www.ietf.org/rfcdiff?url2=draft-ietf-tcpm-generalized-ecn-07
>
> Abstract:
>     This document describes an experimental modification to ECN when used
>     with TCP.  It allows the use of ECN on the following TCP packets:
>     SYNs, pure ACKs, Window probes, FINs, RSTs and retransmissions.
>
>                                                                                    
>
>
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
>
> The IETF Secretariat
>
>

-- 
________________________________________________________________
Bob Briscoe                               http://bobbriscoe.net/