RFC 2481 on ECN to IP
RFC Editor <rfc-ed@ISI.EDU> Sat, 16 January 1999 01:15 UTC
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Subject: RFC 2481 on ECN to IP
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Date: Fri, 15 Jan 1999 12:45:16 -0800
From: RFC Editor <rfc-ed@ISI.EDU>
A new Request for Comments is now available in online RFC libraries. RFC 2481: Title: A Proposal to add Explicit Congestion Notification (ECN) to IP Author(s): K. Ramakrishnan, S. Floyd Status: Experimental Date: January 1999 Mailbox: kkrama@research.att.com, floyd@ee.lbl.gov Pages: 25 Characters: 64559 Updates/Obsoletes/See Also: None I-D Tag: draft-kksjf-ecn-03.txt URL: ftp://ftp.isi.edu/in-notes/rfc2481.txt 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. This memo defines an Experimental Protocol for the Internet community. It does not specify an Internet standard of any kind. Discussion and suggestions for improvement are requested. Distribution of this memo is unlimited. This announcement is sent to the IETF list and the RFC-DIST list. Requests to be added to or deleted from the IETF distribution list should be sent to IETF-REQUEST@IETF.ORG. Requests to be added to or deleted from the RFC-DIST distribution list should be sent to RFC-DIST-REQUEST@RFC-EDITOR.ORG. Details on obtaining RFCs via FTP or EMAIL may be obtained by sending an EMAIL message to rfc-info@RFC-EDITOR.ORG with the message body help: ways_to_get_rfcs. For example: To: rfc-info@RFC-EDITOR.ORG Subject: getting rfcs help: ways_to_get_rfcs Requests for special distribution should be addressed to either the author of the RFC in question, or to RFC-Manager@RFC-EDITOR.ORG. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution.echo Submissions for Requests for Comments should be sent to RFC-EDITOR@RFC-EDITOR.ORG. Please consult RFC 2223, Instructions to RFC Authors, for further information. Joyce K. Reynolds and Alegre Ramos USC/Information Sciences Institute ... Below is the data which will enable a MIME compliant Mail Reader implementation to automatically retrieve the ASCII version of the RFCs.
- RFC 2481 on ECN to IP RFC Editor