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Network Working Group Request for Comments: 3359 Category: Informational |
T. Przygienda Xebeo August 2002 |
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 © The Internet Society (2002). All Rights Reserved.
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.
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Name Value IIH LSP SNP Status
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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
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.
Thanks to Les Ginsberg and others for pointing out details and improving this work.
ISIS security applies to the work presented. No specific security issues are being introduced.
[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.
[RP94] Reynolds, J., "Assigned Numbers; RFC 1700 is Replaced by an
On-line Database", RFC 3232, January, 2002.
Tony Przygienda
Xebeo
One Cragwood Road
South Plainfield, NJ 07080
Phone: (908) 222 4225
Email: prz@xebeo.com
Copyright © The Internet Society (2002). All Rights Reserved.
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