I-D ACTION:draft-kksjf-ecn-02.txt
Internet-Drafts@ietf.org Mon, 05 October 1998 14:55 UTC
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Subject: I-D ACTION:draft-kksjf-ecn-02.txt
Date: Mon, 05 Oct 1998 10:11:11 -0400
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A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : A Proposal to add Explicit Congestion Notification (ECN) to IP Author(s) : K. Ramakrishnan, S. Floyd Filename : draft-kksjf-ecn-02.txt Pages : 21 Date : 02-Oct-98 This note describes a proposed addition of ECN (Explicit Congestion Notification) to IP. TCP is currently the dominant transport protocol used in the Internet. We begin by describing TCP's use of packet drops as an indication of congestion. Next we argue that with the addition of active queue management (e.g., RED) to the Internet infrastructure, where routers detect congestion before the queue overflows, routers are no longer limited to packet drops as an indication of congestion. Routers could instead set a Congestion Experienced (CE) bit in the packet header of packets from ECN-capable transport protocols. We describe when the CE bit would be set in the routers, and describe what modifications would be needed to TCP to make it ECN-capable. Modifications to other transport protocols (e.g., unreliable unicast or multicast, reliable multicast, other reliable unicast transport protocols) could be considered as those protocols are developed and advance through the standards process. Internet-Drafts are available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-kksjf-ecn-02.txt". A URL for the Internet-Draft is: ftp://ftp.ietf.org/internet-drafts/draft-kksjf-ecn-02.txt Internet-Drafts directories are located at: Africa: ftp.is.co.za Europe: ftp.nordu.net ftp.nis.garr.it Pacific Rim: munnari.oz.au US East Coast: ftp.ietf.org US West Coast: ftp.isi.edu Internet-Drafts are also available by mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-kksjf-ecn-02.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.
- I-D ACTION:draft-kksjf-ecn-02.txt Internet-Drafts