Reserved Type, Length and Value (TLV) Codepoints in Intermediate System to Intermediate System
draft-ietf-isis-wg-tlv-codepoints-00

Internet Engineering Task Force                   T.Przygienda

INTERNET DRAFT
Redback

July 2001
                       Reserved TLV Codepoints in ISIS
                 <draft-ietf-isis-wg-tlv-codepoints-00.txt>

Status of This Memo

    This document is an Internet-Draft and is in full conformance with
    all provisions of Section 10 of RFC2026.  Internet-Drafts are
working
    documents of the Internet Engineering Task Force (IETF), its areas,
    and its working groups.  Note that other groups may also distribute
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    and may be updated, replaced, or obsoleted by other documents at
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    Copyright Notice Copyright (C) The Internet Society (2000).  All
    Rights Reserved.

Abstract

    This draft describes implementation codepoints within
    IS-IS [ISO90 , Cal90a , Cal90b ] used today by several ISPs for
    routing within their clouds.  IS-IS is an interior gateway routing
    protocol developed originally by OSI and used with IP extensions as
    IGP. This draft summarizes all TLV codepoints that are being used by

    the protocol and its pending extensions.

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1.  TLV Codepoints reserved
    ___________________________________________________________
     Name                 Value   IIH   LSP  SNP   Status

    ___________________________________________________________

     Area Addresses            1  y     y    n     RFC
     IIS Neighbors             2  n     y    n     RFC
     ES Neighbors              3  n     y    n     RFC
     Part.  DIS                4  n     y    n     RFC
     Prefix Neighbors          5  n     y    n     RFC
     IIS Neighbors             6  y     n    n     RFC
     Padding                   8  y     n    n     RFC
     LSP Entries               9  n     n    y     RFC
     Authentication           10  y     y    y     IETF-draft
     Opt.  Checksum           12  y     n    y     IETF-draft
     LSPBufferSize            14  y?    y    n     SIF-draft
     TE IIS Neigh.            22  n     y    n     IETF-draft
     MT-ISN                  222  n     y    n     IETF-draft
     IP Int.  Reach          128  n     y    n     RFC
     Prot.  Supported        129  y     y    n     RFC
     M-Topologies            229  y     y    n     IETF-draft
     IP Ext.  Address        130  n     y    n     RFC
     IDRPI                   131  n     y    y     RFC
     IP Intf.  Address       132  y     y    n     RFC
     IPv6 Intf.  Addr.       232  y     y    n     IETF-draft
     illegal                 133  n     n    n     ?
     Router ID               134  n     y    n     IETF-draft
     TE IP. Reach            135  n     y    n     IETF-draft
     MT IP. Reach            235  n     y    n     IETF-draft
     IPv6 IP. Reach          236  n     y    n     IETF-draft
     Dynamic Name            137  n     y    n     RFC
     3-Way hellos            240  y     n    n     RFC

2.  Assignment Procedures

    This document is provided to avoid possible future conflicts in
    assignment of TLV numbers.  It does not constitute or represent any
    standard or authority assigning TLV numbers.  TLV assignment happens

    on a shared, informational basis between the ISO, SIF and the IETF
    working groups.  The core ISIS protocol is being specified in the
    ISO standards body, IP extensions to it however are products of the
    ISIS working group in IETF. Since ISO does not provide a numbering
    authority and IANA is only responsible for IP related coding points,

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    no plausible central authority to assign TLV numbers exists as of
    today.

3.  Acknowledgments

4.  Security Consideration

    ISIS security applies to the work presented.  No specific security
    issues are being introduced.
References

    [Cal90a]  R. Callon.  OSI ISIS Intradomain Routing Protocol.
              INTERNET-RFC, Internet Engineering Task Force, February
              1990.

    [Cal90b]  R. Callon.  Use of OSI ISIS for Routing in TCP/IP and Dual

              Environments.  INTERNET-RFC, Internet Engineering Task
              Force, December 1990.

    [ISO90]   ISO.  Information Technology - Telecommunications and
              Information Exchange between Systems - Intermediate System

              to Intermediate System Routing Exchange Protocol for
              Use in Conjunction with the Protocol for Providing the
              Connectionless-Mode Network Service.  ISO, 1990.

5.  Authors' Addresses

     Tony Przygienda
     Redback Networks
     350 Holger Way
     San Jose, CA, 95134-1362
     prz@redback.com

6.   Full Copyright Statement

    Copyright (C) The Internet Society (1997).  All Rights Reserved.

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    kind, provided that the above copyright notice and this paragraph
    are included on all such copies and derivative works.  However,
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    this document itself may not be modified in any way, such as by
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