The NewReno Modification to TCP's Fast Recovery Algorithm

Metadata

Publisher: IETF
Doc Type: Standard
Pages: 16
Abstract: RFC 5681 documents the following four intertwined TCP congestion control algorithms: slow start, congestion avoidance, fast retransmit, and fast recovery. RFC 5681 explicitly allows certain modifications of these algorithms, including modifications that use the TCP Selective Acknowledgment (SACK) option (RFC 2883), and modifications that respond to "partial acknowledgments" (ACKs that cover new data, but not all the data outstanding when loss was detected) in the absence of SACK. This document describes a specific algorithm for responding to partial acknowledgments, referred to as "NewReno". This response to partial acknowledgments was first proposed by Janey Hoe. This document obsoletes RFC 3782. [STANDARDS-TRACK]
Publication Date: 2012-04-01
Status Note: Proposed Standard
DOI: 10.17487/RFC6582
Link: https://doi.org/10.17487/RFC6582
Author(s): Tom Henderson
Sally Floyd
Andrei Gurtov
Yoshifumi Nishida
Keyword(s): Congestion Avoidance, Congestion Control, Fast Retransmit

Latest version of IETF RFC 6582

Document Versions — IETF RFC 6582

▶ IETF RFC 6582 (2012-04-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

IETF RFC 2119 [Active*]
IETF RFC 5681 [Active*]

Bibliographic Reference(s)

Gurtov, A., "[Tsvwg] resolving the problem of unnecessary fast retransmits in go-back-N", email to the tsvwg mailing list, July 28, 2003. < http://www.ietf.org/mail-archive/ web/tsvwg/current/msg04334.html >. EXTERNAL
Lin, D. and R. Morris, "Dynamics of Random Early Detection", SIGCOMM 97, October 1997. EXTERNAL
Hoe, J., "Improving the Start-up Behavior of a Congestion Control Scheme for TCP", ACM SIGCOMM, August 1996. < http://ccr.sigcomm.org/archive/1996/conf/hoe.pdf >. EXTERNAL
Henderson, T., "Re: NewReno and the 2001 Revision", September 1998. Email to the tcpimpl mailing list, archived at < http://groups.yahoo.com/group/tcp-impl/message/1321 >. EXTERNAL
"The Network Simulator version 2 (ns-2)", < http://www.isi.edu/nsnam/ns/ >. EXTERNAL
Hoe, J., "Startup Dynamics of TCP's Congestion Control and Avoidance Schemes", Master's Thesis, MIT, June 1995. EXTERNAL
Floyd, S., "TCP and Successive Fast Retransmits", Technical report, May 1995. < ftp://ftp.ee.lbl.gov/papers/fastretrans.ps >. EXTERNAL
Gurtov, A. and S. Floyd, "Resolving Acknowledgment Ambiguity in non-SACK TCP", NExt Generation Teletraffic and Wired/Wireless Advanced Networking (NEW2AN'04), February 2004. < http://www.cs.helsinki.fi/u/gurtov/ papers/heuristics.html >. EXTERNAL
Cardwell, N., "delayed ACKs for retransmitted packets: ouch!". November 1998, Email to the tcpimpl mailing list, archived at < http://groups.yahoo.com/group/tcp-impl/message/1428 >. EXTERNAL
Fall, K. and S. Floyd, "Simulation-based Comparisons of Tahoe, Reno and SACK TCP", Computer Communication Review, July 1996. < ftp://ftp.ee.lbl.gov/papers/sacks.ps.Z >. EXTERNAL
IETF RFC 1323 [Superseded*]
IETF RFC 2582 [Superseded*]
IETF RFC 2883 [Active*]
IETF RFC 3042 [Active*]
RFC3522 — RFC3522 EXTERNAL
IETF RFC 3782 [Superseded*]

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Referenced By

IETF RFC 6675 [Active*]
IETF RFC 9438 [Active*]
IETF RFC 9937 [Active*]