[tcpm] I-D Action: draft-ietf-tcpm-accurate-ecn-09.txt
internet-drafts@ietf.org Mon, 08 July 2019 21:52 UTC
Return-Path: <internet-drafts@ietf.org>
X-Original-To: tcpm@ietf.org
Delivered-To: tcpm@ietfa.amsl.com
Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 783B0120018; Mon, 8 Jul 2019 14:52:03 -0700 (PDT)
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 8bit
From: internet-drafts@ietf.org
To: i-d-announce@ietf.org
Cc: tcpm@ietf.org
X-Test-IDTracker: no
X-IETF-IDTracker: 6.98.3
Auto-Submitted: auto-generated
Precedence: bulk
Reply-To: tcpm@ietf.org
Message-ID: <156262272341.1025.13950526549198754755@ietfa.amsl.com>
Date: Mon, 08 Jul 2019 14:52:03 -0700
Archived-At: <https://mailarchive.ietf.org/arch/msg/tcpm/VYIAQMqWsLqb0SRimdvR2pg1zeo>
Subject: [tcpm] I-D Action: draft-ietf-tcpm-accurate-ecn-09.txt
X-BeenThere: tcpm@ietf.org
X-Mailman-Version: 2.1.29
List-Id: TCP Maintenance and Minor Extensions Working Group <tcpm.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tcpm>, <mailto:tcpm-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/tcpm/>
List-Post: <mailto:tcpm@ietf.org>
List-Help: <mailto:tcpm-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tcpm>, <mailto:tcpm-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 08 Jul 2019 21:52:04 -0000
A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the TCP Maintenance and Minor Extensions WG of the IETF. Title : More Accurate ECN Feedback in TCP Authors : Bob Briscoe Mirja Kühlewind Richard Scheffenegger Filename : draft-ietf-tcpm-accurate-ecn-09.txt Pages : 46 Date : 2019-07-08 Abstract: Explicit Congestion Notification (ECN) is a mechanism where network nodes can mark IP packets instead of dropping them to indicate incipient congestion to the end-points. Receivers with an ECN- capable transport protocol feed back this information to the sender. ECN is specified for TCP in such a way that only one feedback signal can be transmitted per Round-Trip Time (RTT). Recent new TCP mechanisms like Congestion Exposure (ConEx), Data Center TCP (DCTCP) or Low Latency Low Loss Scalable Throughput (L4S) need more accurate ECN feedback information whenever more than one marking is received in one RTT. This document specifies an experimental scheme to provide more than one feedback signal per RTT in the TCP header. Given TCP header space is scarce, it allocates a reserved header bit, that was previously used for the ECN-Nonce which has now been declared historic. It also overloads the two existing ECN flags in the TCP header. Supplementary feedback information can optionally be provided in a new TCP option, which is never used on the TCP SYN. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-tcpm-accurate-ecn/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-tcpm-accurate-ecn-09 https://datatracker.ietf.org/doc/html/draft-ietf-tcpm-accurate-ecn-09 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-tcpm-accurate-ecn-09 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. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/
- [tcpm] I-D Action: draft-ietf-tcpm-accurate-ecn-0… internet-drafts