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rfc:rfc7805

Internet Engineering Task Force (IETF) A. Zimmermann Request for Comments: 7805 Obsoletes: 675 721 761 813 816 879 896 W. Eddy

         1078 6013                                         MTI Systems

Updates: 7414 L. Eggert Category: Informational NetApp ISSN: 2070-1721 April 2016

      Moving Outdated TCP Extensions and TCP-Related Documents
                to Historic or Informational Status

Abstract

 This document reclassifies several TCP extensions and TCP-related
 documents that either have been superseded, have never seen
 widespread use, or are no longer recommended for use to "Historic"
 status.  The affected documents are RFCs 675, 721, 761, 813, 816,
 879, 896, 1078, and 6013.  Additionally, this document reclassifies
 RFCs 700, 794, 814, 817, 872, 889, 964, and 1071 to "Informational"
 status.

Status of This Memo

 This document is not an Internet Standards Track specification; it is
 published for informational purposes.
 This document is a product of the Internet Engineering Task Force
 (IETF).  It represents the consensus of the IETF community.  It has
 received public review and has been approved for publication by the
 Internet Engineering Steering Group (IESG).  Not all documents
 approved by the IESG are a candidate for any level of Internet
 Standard; see Section 2 of RFC 5741.
 Information about the current status of this document, any errata,
 and how to provide feedback on it may be obtained at
 http://www.rfc-editor.org/info/rfc7805.

Zimmermann, et al. Informational [Page 1] RFC 7805 Outdated TCP Extensions and Documents April 2016

Copyright Notice

 Copyright (c) 2016 IETF Trust and the persons identified as the
 document authors.  All rights reserved.
 This document is subject to BCP 78 and the IETF Trust's Legal
 Provisions Relating to IETF Documents
 (http://trustee.ietf.org/license-info) in effect on the date of
 publication of this document.  Please review these documents
 carefully, as they describe your rights and restrictions with respect
 to this document.  Code Components extracted from this document must
 include Simplified BSD License text as described in Section 4.e of
 the Trust Legal Provisions and are provided without warranty as
 described in the Simplified BSD License.

Table of Contents

 1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
 2.  Status Changes  . . . . . . . . . . . . . . . . . . . . . . .   3
   2.1.  Moving to "Historic" Status . . . . . . . . . . . . . . .   3
   2.2.  Moving to "Informational" Status  . . . . . . . . . . . .   4
 3.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
 4.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   5
   4.1.  Normative References  . . . . . . . . . . . . . . . . . .   5
   4.2.  Informative References  . . . . . . . . . . . . . . . . .   7
 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .   8
 Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   8

1. Introduction

 TCP has a long history.  Over time, many RFCs have accumulated that
 describe aspects of the TCP protocol, implementation, and extensions.
 Some of these have been superseded, are no longer recommended for
 use, or have simply never seen widespread use.
 Sections 6 and 7.1 of the TCP roadmap document [RFC7414] already
 reclassified a number of TCP extensions as "Historic" and describes
 the reasons for doing so, but it did not instruct the RFC Editor to
 change the status of these RFCs in the RFC database.  The purpose of
 this document is to do just that.
 In addition, this document reclassifies all other documents mentioned
 in the TCP roadmap that currently have an "Unknown" status to either
 "Historic" or "Informational".

Zimmermann, et al. Informational [Page 2] RFC 7805 Outdated TCP Extensions and Documents April 2016

2. Status Changes

 The following two sections give a short justification why a specific
 TCP extension or a TCP-related document is being reclassified as
 "Historic" or "Informational".  In addition, the letter code after an
 RFC number indicates from which original status a particular RFC is
 changed to "Historic" or "Informational" (see BCP 9 [RFC2026] for an
 explanation of these categories):
    S - Standards Track (Proposed Standard, Draft Standard, or
    Internet Standard)
    E - Experimental
    I - Informational
    H - Historic
    B - Best Current Practice
    U - Unknown (not formally defined)
 For the content of the documents itself, the reader is referred
 either to the corresponding RFC or, for a brief description, to the
 TCP roadmap document [RFC7414].

2.1. Moving to "Historic" Status

 This document changes the status of the following RFCs to "Historic"
 [RFC2026]:
 o  [RFC675]  U, "Specification of Internet Transmission Control
    Program" was replaced by the final TCP specification [RFC793]
 o  [RFC721]  U, "Out-of-Band Control Signals in a Host-to-Host
    Protocol" was a proposal that was not incorporated into the final
    TCP specification [RFC793]
 o  [RFC761]  U, "DoD Standard Transmission Control Protocol" was
    replaced by the final TCP specification [RFC793]
 o  [RFC813]  U, "Window and Acknowledgement Strategy in TCP" was
    incorporated into [RFC1122]
 o  [RFC816]  U, "Fault Isolation and Recovery" was incorporated into
    [RFC1122] and [RFC5461]

Zimmermann, et al. Informational [Page 3] RFC 7805 Outdated TCP Extensions and Documents April 2016

 o  [RFC879]  U, "The TCP Maximum Segment Size and Related Topics" was
    incorporated into [RFC1122] and [RFC6691]
 o  [RFC896]  U, "Congestion Control in IP/TCP Internetworks" was
    incorporated into [RFC1122] and [RFC6633]
 o  [RFC1078] U, "TCP Port Service Multiplexer (TCPMUX)" should be
    deprecated, because:
  • It modifies the TCP connection establishment semantics by also

completing the three-way handshake when a service is not

       available.
    *  It requires all new connections to be received on a single
       port, which limits the number of connections between two
       machines.
    *  It complicates firewall implementation and management because
       all services share the same port number.
    *  There are very limited deployments, and these are not used in
       an Internet context.  (The only reported use is for SGI's Data
       Migration Facility in private networks.)
 o  [RFC6013] E, "TCP Cookie Transactions (TCPCT)" should be
    deprecated (although only published in 2011) because:
  • It uses the experimental TCP option codepoints, which prohibit

a large-scale deployment.

  • [RFC7413] and [TCP-EDO] are alternatives that have more "rough

consensus and running code" behind them.

  • There are no known wide-scale deployments.

2.2. Moving to "Informational" Status

 This document changes the status of the following RFCs to
 "Informational" [RFC2026]:
 o  [RFC700] U, "A Protocol Experiment", which presents a field report
    about the deployment of a very early version of TCP
 o  [RFC794]  U, "Pre-emption", which recommends that operating
    systems need to manage their limited resources, which may include
    TCP connection state
 o  [RFC814]  U, "Name, Addresses, Ports, and Routes", which gives
    guidance on designing tables and algorithms to keep track of
    various identifiers within a TCP/IP implementation
 o  [RFC817]  U, "Modularity and Efficiency in Protocol
    Implementation", which contains general implementation suggestions

Zimmermann, et al. Informational [Page 4] RFC 7805 Outdated TCP Extensions and Documents April 2016

 o  [RFC872]  U, "TCP-on-a-LAN", which concludes that the fear of
    using TCP on a local network is unfounded
 o  [RFC889]  U, "Internet Delay Experiments", which describes
    experiments with the TCP retransmission timeout calculation
 o  [RFC964]  U, "Some Problems with the Specification of the Military
    Standard Transmission Control Protocol", which points out several
    specification bugs in the US Military's MIL-STD-1778 document,
    which was intended as a successor to [RFC793]
 o  [RFC1071] U, "Computing the Internet Checksum", which lists a
    number of implementation techniques for efficiently computing the
    Internet checksum

3. Security Considerations

 This document introduces no new security considerations.  Each RFC
 listed in this document attempts to address the security
 considerations of the specification it contains.

4. References

4.1. Normative References

 [RFC675]   Cerf, V., Dalal, Y., and C. Sunshine, "Specification of
            Internet Transmission Control Program", RFC 675,
            DOI 10.17487/RFC0675, December 1974,
            <http://www.rfc-editor.org/info/rfc675>.
 [RFC700]   Mader, E., Plummer, W., and R. Tomlinson, "Protocol
            experiment", RFC 700, DOI 10.17487/RFC0700, August 1974,
            <http://www.rfc-editor.org/info/rfc700>.
 [RFC721]   Garlick, L., "Out-of-Band Control Signals in a Host-to-
            Host Protocol", RFC 721, DOI 10.17487/RFC0721, September
            1976, <http://www.rfc-editor.org/info/rfc721>.
 [RFC761]   Postel, J., "DoD standard Transmission Control Protocol",
            RFC 761, DOI 10.17487/RFC0761, January 1980,
            <http://www.rfc-editor.org/info/rfc761>.
 [RFC794]   Cerf, V., "Pre-emption", RFC 794, DOI 10.17487/RFC0794,
            September 1981, <http://www.rfc-editor.org/info/rfc794>.
 [RFC813]   Clark, D., "Window and Acknowledgement Strategy in TCP",
            RFC 813, DOI 10.17487/RFC0813, July 1982,
            <http://www.rfc-editor.org/info/rfc813>.

Zimmermann, et al. Informational [Page 5] RFC 7805 Outdated TCP Extensions and Documents April 2016

 [RFC814]   Clark, D., "Name, addresses, ports, and routes", RFC 814,
            DOI 10.17487/RFC0814, July 1982,
            <http://www.rfc-editor.org/info/rfc814>.
 [RFC816]   Clark, D., "Fault isolation and recovery", RFC 816,
            DOI 10.17487/RFC0816, July 1982,
            <http://www.rfc-editor.org/info/rfc816>.
 [RFC817]   Clark, D., "Modularity and efficiency in protocol
            implementation", RFC 817, DOI 10.17487/RFC0817, July 1982,
            <http://www.rfc-editor.org/info/rfc817>.
 [RFC872]   Padlipsky, M., "TCP-on-a-LAN", RFC 872,
            DOI 10.17487/RFC0872, September 1982,
            <http://www.rfc-editor.org/info/rfc872>.
 [RFC879]   Postel, J., "The TCP Maximum Segment Size and Related
            Topics", RFC 879, DOI 10.17487/RFC0879, November 1983,
            <http://www.rfc-editor.org/info/rfc879>.
 [RFC889]   Mills, D., "Internet Delay Experiments", RFC 889,
            DOI 10.17487/RFC0889, December 1983,
            <http://www.rfc-editor.org/info/rfc889>.
 [RFC896]   Nagle, J., "Congestion Control in IP/TCP Internetworks",
            RFC 896, DOI 10.17487/RFC0896, January 1984,
            <http://www.rfc-editor.org/info/rfc896>.
 [RFC964]   Sidhu, D. and T. Blumer, "Some problems with the
            specification of the Military Standard Transmission
            Control Protocol", RFC 964, DOI 10.17487/RFC0964, November
            1985, <http://www.rfc-editor.org/info/rfc964>.
 [RFC1071]  Braden, R., Borman, D., and C. Partridge, "Computing the
            Internet checksum", RFC 1071, DOI 10.17487/RFC1071,
            September 1988, <http://www.rfc-editor.org/info/rfc1071>.
 [RFC1078]  Lottor, M., "TCP port service Multiplexer (TCPMUX)",
            RFC 1078, DOI 10.17487/RFC1078, November 1988,
            <http://www.rfc-editor.org/info/rfc1078>.
 [RFC6013]  Simpson, W., "TCP Cookie Transactions (TCPCT)", RFC 6013,
            DOI 10.17487/RFC6013, January 2011,
            <http://www.rfc-editor.org/info/rfc6013>.

Zimmermann, et al. Informational [Page 6] RFC 7805 Outdated TCP Extensions and Documents April 2016

4.2. Informative References

 [RFC793]   Postel, J., "Transmission Control Protocol", STD 7,
            RFC 793, DOI 10.17487/RFC0793, September 1981,
            <http://www.rfc-editor.org/info/rfc793>.
 [RFC1122]  Braden, R., Ed., "Requirements for Internet Hosts -
            Communication Layers", STD 3, RFC 1122,
            DOI 10.17487/RFC1122, October 1989,
            <http://www.rfc-editor.org/info/rfc1122>.
 [RFC2026]  Bradner, S., "The Internet Standards Process -- Revision
            3", BCP 9, RFC 2026, DOI 10.17487/RFC2026, October 1996,
            <http://www.rfc-editor.org/info/rfc2026>.
 [RFC5461]  Gont, F., "TCP's Reaction to Soft Errors", RFC 5461,
            DOI 10.17487/RFC5461, February 2009,
            <http://www.rfc-editor.org/info/rfc5461>.
 [RFC6633]  Gont, F., "Deprecation of ICMP Source Quench Messages",
            RFC 6633, DOI 10.17487/RFC6633, May 2012,
            <http://www.rfc-editor.org/info/rfc6633>.
 [RFC6691]  Borman, D., "TCP Options and Maximum Segment Size (MSS)",
            RFC 6691, DOI 10.17487/RFC6691, July 2012,
            <http://www.rfc-editor.org/info/rfc6691>.
 [RFC7413]  Cheng, Y., Chu, J., Radhakrishnan, S., and A. Jain, "TCP
            Fast Open", RFC 7413, DOI 10.17487/RFC7413, December 2014,
            <http://www.rfc-editor.org/info/rfc7413>.
 [RFC7414]  Duke, M., Braden, R., Eddy, W., Blanton, E., and A.
            Zimmermann, "A Roadmap for Transmission Control Protocol
            (TCP) Specification Documents", RFC 7414,
            DOI 10.17487/RFC7414, February 2015,
            <http://www.rfc-editor.org/info/rfc7414>.
 [TCP-EDO]  Touch, J. and W. Eddy, "TCP Extended Data Offset Option",
            Work in Progress, draft-ietf-tcpm-tcp-edo-04, November
            2015.

Zimmermann, et al. Informational [Page 7] RFC 7805 Outdated TCP Extensions and Documents April 2016

Acknowledgments

 The authors thank John Leslie, Pasi Sarolahti, Richard Scheffenegger,
 Martin Stiemerling, Joe Touch, Valdis Kletnieks, and Greg Skinner for
 their contributions.
 Lars Eggert has received funding from the European Union's Horizon
 2020 research and innovation program 2014-2018 under grant agreement
 No. 644866 (SSICLOPS).  This document reflects only the authors'
 views, and the European Commission is not responsible for any use
 that may be made of the information it contains.

Authors' Addresses

 Alexander Zimmermann
 Email: alexander@zimmermann.eu.com
 Wesley M. Eddy
 MTI Systems
 Suite 170, 18013 Cleveland Parkway
 Cleveland, OH  44135
 United States
 Phone: +1-216-433-6682
 Email: wes@mti-systems.com
 Lars Eggert
 NetApp
 Sonnenallee 1
 Kirchheim  85551
 Germany
 Phone: +49 151 12055791
 Email: lars@netapp.com

Zimmermann, et al. Informational [Page 8]

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