[tsvwg] I-D Action: draft-ietf-tsvwg-ecn-l4s-id-08.txt
internet-drafts@ietf.org Mon, 04 November 2019 23:59 UTC
Return-Path: <internet-drafts@ietf.org>
X-Original-To: tsvwg@ietf.org
Delivered-To: tsvwg@ietfa.amsl.com
Received: from ietfa.amsl.com (localhost [IPv6:::1]) by ietfa.amsl.com (Postfix) with ESMTP id 74BCB120123; Mon, 4 Nov 2019 15:59:04 -0800 (PST)
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
From: internet-drafts@ietf.org
To: i-d-announce@ietf.org
Cc: tsvwg@ietf.org
X-Test-IDTracker: no
X-IETF-IDTracker: 6.108.0
Auto-Submitted: auto-generated
Precedence: bulk
Reply-To: tsvwg@ietf.org
Message-ID: <157291194444.13988.17692173384422525041@ietfa.amsl.com>
Date: Mon, 04 Nov 2019 15:59:04 -0800
Archived-At: <https://mailarchive.ietf.org/arch/msg/tsvwg/PNuJYuBDypdckKtQMY7Yj46Mqw0>
Subject: [tsvwg] I-D Action: draft-ietf-tsvwg-ecn-l4s-id-08.txt
X-BeenThere: tsvwg@ietf.org
X-Mailman-Version: 2.1.29
List-Id: Transport Area Working Group <tsvwg.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tsvwg>, <mailto:tsvwg-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/tsvwg/>
List-Post: <mailto:tsvwg@ietf.org>
List-Help: <mailto:tsvwg-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tsvwg>, <mailto:tsvwg-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 04 Nov 2019 23:59:05 -0000
A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Transport Area Working Group WG of the IETF. Title : Identifying Modified Explicit Congestion Notification (ECN) Semantics for Ultra-Low Queuing Delay (L4S) Authors : Koen De Schepper Bob Briscoe Filename : draft-ietf-tsvwg-ecn-l4s-id-08.txt Pages : 42 Date : 2019-11-04 Abstract: This specification defines the identifier to be used on IP packets for a new network service called low latency, low loss and scalable throughput (L4S). It is similar to the original (or 'Classic') Explicit Congestion Notification (ECN). 'Classic' ECN marking was required to be equivalent to a drop, both when applied in the network and when responded to by a transport. Unlike 'Classic' ECN marking, for packets carrying the L4S identifier, the network applies marking more immediately and more aggressively than drop, and the transport response to each mark is reduced and smoothed relative to that for drop. The two changes counterbalance each other so that the throughput of an L4S flow will be roughly the same as a 'Classic' flow under the same conditions. However, the much more frequent control signals and the finer responses to them result in ultra-low queuing delay without compromising link utilization, and low delay is maintained during high traffic load. Examples of new active queue management (AQM) marking algorithms and examples of new transports (whether TCP-like or real-time) are specified separately. The new L4S identifier is the key piece that enables them to interwork and distinguishes them from 'Classic' traffic. It gives an incremental migration path so that existing 'Classic' TCP traffic will be no worse off, but it can be prevented from degrading the ultra-low delay and loss of the new scalable transports. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-ietf-tsvwg-ecn-l4s-id/ There are also htmlized versions available at: https://tools.ietf.org/html/draft-ietf-tsvwg-ecn-l4s-id-08 https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-ecn-l4s-id-08 A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-ecn-l4s-id-08 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/
- [tsvwg] I-D Action: draft-ietf-tsvwg-ecn-l4s-id-0… internet-drafts