< draft-ietf-tcpm-rfc2581bis-05.txt		draft-ietf-tcpm-rfc2581bis-06.txt >
	Network Working Group M. Allman		Network Working Group M. Allman
	Internet-Draft V. Paxson		Internet-Draft V. Payson
	Expires: October 2009 ICSI		Obsoletes: 2581 ICSI
	E. Blanton		Intended status: Proposed Standard E. Blanton
	Purdue University		Expires: January 27 2010 Purdue University
	May 2009		July 27 2009
	TCP Congestion Control		TCP Congestion Control
	draft-ietf-tcpm-rfc2581bis-05.txt		draft-ietf-tcpm-rfc2581bis-06.txt
	Status of this Memo		Status of this Memo
	This Internet-Draft is submitted to IETF in full conformance with		This Internet-Draft is submitted to IETF in full conformance with
	the provisions of BCP 78 and BCP 79. This document may contain		the provisions of BCP 78 and BCP 79. This document may contain
	material from IETF Documents or IETF Contributions published or made		material from IETF Documents or IETF Contributions published or made
	publicly available before November 10, 2008. The person(s)		publicly available before November 10, 2008. The person(s)
	controlling the copyright in some of this material may not have		controlling the copyright in some of this material may not have
	granted the IETF Trust the right to allow modifications of such		granted the IETF Trust the right to allow modifications of such
	material outside the IETF Standards Process. Without obtaining an		material outside the IETF Standards Process. Without obtaining an
	skipping to change at page 2, line 21 ¶		skipping to change at page 2, line 21 ¶
	not be created outside the IETF Standards Process, except to format		not be created outside the IETF Standards Process, except to format
	it for publication as an RFC or to translate it into languages other		it for publication as an RFC or to translate it into languages other
	than English.		than English.
	Abstract		Abstract
	This document defines TCP's four intertwined congestion control		This document defines TCP's four intertwined congestion control
	algorithms: slow start, congestion avoidance, fast retransmit, and		algorithms: slow start, congestion avoidance, fast retransmit, and
	fast recovery. In addition, the document specifies how TCP should		fast recovery. In addition, the document specifies how TCP should
	begin transmission after a relatively long idle period, as well as		begin transmission after a relatively long idle period, as well as
	discussing various acknowledgment generation methods.		discussing various acknowledgment generation methods. This document
			obsoletes RFC 2581.
			Table Of Contents
			1. Introduction. . . . . . . . . . . . . . . . . 2
			2. Definitions . . . . . . . . . . . . . . . . . 3
			3. Congestion Control Algorithms . . . . . . . . 4
			3.1 Slow Start and Congestion Avoidance . . . . . 4
			3.2 Fast Retransmit/Fast Recovery . . . . . . . . 7
			4. Additional Considerations . . . . . . . . . . 9
			4.1 Re-starting Idle Connections. . . . . . . . . 9
			4.2 Generating Acknowledgments. . . . . . . . . . 10
			4.3 Loss Recovery Mechanisms. . . . . . . . . . . 11
			5. Security Considerations . . . . . . . . . . . 12
			6. Changes Between RFC 2001 and RFC 2581 . . . . 12
			7. Changes Relative to RFC 2581. . . . . . . . . 12
			8. IANA Considerations . . . . . . . . . . . . . 13
	1. Introduction		1. Introduction
	This document specifies four TCP [RFC793] congestion control		This document specifies four TCP [RFC793] congestion control
	algorithms: slow start, congestion avoidance, fast retransmit and		algorithms: slow start, congestion avoidance, fast retransmit and
	fast recovery. These algorithms were devised in [Jac88] and		fast recovery. These algorithms were devised in [Jac88] and
	[Jac90]. Their use with TCP is standardized in [RFC1122].		[Jac90]. Their use with TCP is standardized in [RFC1122].
	Additional early work in additive-increase, multiplicative-decrease		Additional early work in additive-increase, multiplicative-decrease
	congestion control is given in [CJ89].		congestion control is given in [CJ89].
End of changes. 3 change blocks.
	7 lines changed or deleted		24 lines changed or added
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