The NewReno Modification to TCP's Fast Recovery Algorithm

Metadata

Publisher: IETF
Doc Type: Standard
Pages: 19
Abstract: The purpose of this document is to advance NewReno TCP's Fast Retransmit and Fast Recovery algorithms in RFC 2582 from Experimental to Standards Track status. The main change in this document relative to RFC 2582 is to specify the Careful variant of NewReno's Fast Retransmit and Fast Recovery algorithms. The base algorithm described in RFC 2582 did not attempt to avoid unnecessary multiple Fast Retransmits that can occur after a timeout. However, RFC 2582 also defined "Careful" and "Less Careful" variants that avoid these unnecessary Fast Retransmits, and recommended the Careful variant. This document specifies the previously-named "Careful" variant as the basic version of NewReno TCP. [STANDARDS-TRACK]
Publication Date: 2004-04-01
Status Note: Proposed Standard
DOI: 10.17487/RFC3782
Link: https://doi.org/10.17487/RFC3782
Author(s): Sally Floyd
Tom Henderson
Andrei Gurtov
Keyword(s): TCP

Latest version of IETF RFC 3782

Document Versions — IETF RFC 3782

▶ IETF RFC 3782 (2004-04-01)

THIS DOC [SUPERSEDED] [LATEST VERSION]

Superseded by:

IETF RFC 6582 [Active*]

Normative Reference(s)

IETF RFC 2018 [Active*]
IETF RFC 2119 [Active*]
IETF RFC 2581 [Superseded*]
IETF RFC 2582 [Superseded*]
IETF RFC 2988 [Superseded*]
IETF RFC 3042 [Active*]

Bibliographic Reference(s)

The Network Simulator (NS). URL " http://www.isi.edu/nsnam/ns/ ". EXTERNAL
Hoe, J., "Startup Dynamics of TCP's Congestion Control and Avoidance Schemes", Master's Thesis, MIT, 1995. EXTERNAL
Gurtov, A., "[Tsvwg] resolving the problem of unnecessary fast retransmits in go-back-N", email to the tsvwg mailing list, message ID <3F25B467.9020609@cs.helsinki.fi>, July 28, 2003. URL " http://www1.ietf.org/mail-archive/working- groups/tsvwg/current/msg04334.html ". EXTERNAL
Hoe, J., "Improving the Start-up Behavior of a Congestion Control Scheme for TCP", ACM SIGCOMM, August 1996. URL " http://www.acm.org/sigcomm/sigcomm96/program.html ". EXTERNAL
Fall, K. and S. Floyd, "Simulation-based Comparisons of Tahoe, Reno and SACK TCP", Computer Communication Review, July 1996. URL " ftp://ftp.ee.lbl.gov/papers/sacks.ps.Z ". EXTERNAL
Henderson, T., Re: NewReno and the 2001 Revision. September 1998. Email to the tcpimpl mailing list, Message ID "Pine.BSI.3.95.980923224136.26134A- 100000@raptor.CS.Berkeley.EDU", archived at " http://tcp- impl.lerc.nasa.gov/tcp-impl ". 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. URL " http://www.cs.helsinki.fi/u/gurtov/papers/ heuristics.html ". EXTERNAL
Lin, D. and R. Morris, "Dynamics of Random Early Detection", SIGCOMM 97, September 1997. URL " http://www.acm.org/sigcomm/sigcomm97/program.html ". EXTERNAL
Padhye, J. and S. Floyd, "Identifying the TCP Behavior of Web Servers", June 2001, SIGCOMM 2001. EXTERNAL
Floyd, S., "TCP and Successive Fast Retransmits", Technical report, October 1994. URL " ftp://ftp.ee.lbl.gov/papers/fastretrans.ps ". EXTERNAL
Floyd, S., "Moving NewReno from Experimental to Proposed Standard? Presentation to the TSVWG Working Group", March 2003. URLs " http://www.icir.org/floyd/talks/newreno- Mar03.ps " and " http://www.icir.org/floyd/talks/newreno- Mar03.pdf ". EXTERNAL
Cardwell, N., "delayed ACKs for retransmitted packets: ouch!". November 1998, Email to the tcpimpl mailing list, Message-ID "Pine.LNX.4.02A.9811021421340.26785- 100000@sake.cs.washington.edu", archived at " http://tcp- impl.lerc.nasa.gov/tcp-impl ". EXTERNAL
IETF RFC 1323 [Superseded*]
IETF RFC 2001 [Superseded*]
IETF RFC 3517 [Superseded*]
RFC3522 — RFC3522 EXTERNAL

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Referenced By

IETF RFC 4614 [Superseded*]
IETF RFC 5681 [Active*]
IETF RFC 6582 [Active*]