Network Working Group T. Przygienda
Request for Comments: 3359 Xebeo
Category: Informational August 2002
Reserved Type, Length and Value (TLV) Codepoints in
Intermediate System to Intermediate System
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2002). All Rights Reserved.
Abstract
This document describes implementation codepoints within Intermediate
System to Intermediate System (IS-IS) 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
Interior Gateway Protocol (IGP). This document summarizes all Table,
Length and Value (TLV) codepoints that are being used by the protocol
and its pending extensions.
Przygienda Informational [Page 1]
RFC 3359 Reserved TLV Codepoints in ISIS August 2002
1. TLV Codepoints Reserved
_____________________________________________________________________
Name Value IIH LSP SNP Status
_____________________________________________________________________
Area Addresses 1 y y n ISO 10589
IIS Neighbors 2 n y n ISO 10589
ES Neighbors 3 n y n ISO 10589
Part. DIS 4 n y n ISO 10589
Prefix Neighbors 5 n y n ISO 10589
IIS Neighbors 6 y n n ISO 10589
Padding 8 y n n ISO 10589
LSP Entries 9 n n y ISO 10589
Authentication 10 y y y ISO 10589
Opt. Checksum 12 y n y IETF-draft
LSPBufferSize 14 n y n ISO 10589 Rev 2 Draft
TE IIS Neigh. 22 n y n IETF-draft
DECnet Phase IV 42 y n n DEC (ancient)
Lucent Proprietary 66 n y n
IP Int. Reach 128 n y n RFC 1195
Prot. Supported 129 y y n RFC 1195
IP Ext. Address 130 n y n RFC 1195
IDRPI 131 n y y RFC 1195
IP Intf. Address 132 y y n RFC 1195
Illegal 133 n n n RFC 1195 (not used)
Router ID 134 n y n IETF-draft
TE IP. Reach 135 n y n IETF-draft
Dynamic Name 137 n y n RFC 2763
Nortel Proprietary 176 n y n
Nortel Proprietary 177 n y n
Restart TLV 211 y n n IETF-draft
MT-ISN 222 n y n IETF-draft
M-Topologies 229 y y n IETF-draft
IPv6 Intf. Addr. 232 y y n IETF-draft
MT IP. Reach 235 n y n IETF-draft
IPv6 IP. Reach 236 n y n IETF-draft
MT IPv6 IP. Reach 237 n y n IETF-draft
P2P Adjacency State 240 y n n IETF-draft
Przygienda Informational [Page 2]
RFC 3359 Reserved TLV Codepoints in ISIS August 2002
2. Assignment Procedures
This document is provided to avoid possible future conflicts in the
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,
no plausible central authority to assign TLV numbers exists as of
today.
This document will be periodically updated by newer versions in the
fashion of [RP94] and successors. It may be replaced at any given
point in time by some type of official registry.
This document will not indicate specific documents using the
codepoints, nor will it resolve the sub-TLV codepoints.
3. Acknowledgments
Thanks to Les Ginsberg and others for pointing out details and
improving this work.
4. Security Consideration
datatracker.ietf.org