ISIS TLV
IS-IS TLV Codepoints
(last updated 2010-11-19)
Registries included below:
- TLV Codepoints Registry
- IS-IS Authentication Type Codes for TLV 10
- Sub-TLVs for TLV 22, 141, and 222
- link-attribute bit values for sub-TLV 19 of TLV 22
- Sub-TLVs for TLV 135
- Sub-TLVs for TLV 235
- Sub-TLVs for TLV 236
- Sub-TLVs for TLV 237
- Sub-TLVs for TLV 242
Registry Name: TLV Codepoints Registry
Reference: [RFC3563]
Registration Procedures: Expert review
Note:
IETF SHALL keep JTC1/SC6 informed of TLV codepoint values allocated,
and JTC1/SC6 SHALL refer allocation requests arising within JTC1
constituencies to the IANA registry process.
Registry:
Value Name IIH LSP SNP Status/Reference
-------- -------------------------------------- --- --- --- ----------------
1 Area Addresses y y n ISO 10589
2 IIS Neighbors n y n ISO 10589
3 ES Neighbors n y n ISO 10589
4 Part. DIS n y n ISO 10589
5 Prefix Neighbors n y n ISO 10589
6 IIS Neighbors y n n ISO 10589
7 Unassigned
8 Padding y n n ISO 10589
9 LSP Entries n n y ISO 10589
10 Authentication y y y ISO 10589
11 Unassigned
12 Opt. Checksum y n y [RFC3358]
13 Unassigned
14 LSPBufferSize n y n ISO 10589 Rev 2 Draft
15 Unassigned
16 Encapsulation Cap n y n IETF-draft
17-21 Unassigned
22 The extended IS reachability TLV n y n [RFC5305]
23 IS Neighbor Attribute n y n [RFC5311]
24 IS Alias ID n y n [RFC5311]
25-41 Unassigned
42 DECnet Phase IV y n n DEC (ancient)
43-65 Unassigned
66 Lucent Proprietary n y n
67-127 Unassigned
128 IP Int. Reach n y n [RFC1195]
129 Prot. Supported y y n [RFC1195]
130 IP Ext. Address n y n [RFC1195]
131 IDRPI n y y [RFC1195]
132 IP Intf. Address y y n [RFC1195]
133 Illegal n n n [RFC1195] (not used)
134 The Traffic Engineering router ID TLV n y n [RFC5305]
135 The extended IP reachability TLV n y n [RFC5305]
136 Unassigned
137 Dynamic Name n y n [RFC5301]
138 GMPLS-SRLG n y n [RFC4205][RFC5307]
139 IPv6 SRLG TLV n y n [RFC-ietf-isis-ipv6-te-08.txt]
140 IPv6 TE Router ID n y n [RFC-ietf-isis-ipv6-te-08.txt]
141 inter-AS reachability information n y n [RFC5316]
142-175 Unassigned
176 Nortel Proprietary n y n
177 Nortel Proprietary n y n
178-210 Unassigned
211 Restart TLV y n n [RFC5306]
212-221 Unassigned
222 MT-ISN n y n [RFC5120]
223 MT IS Neighbor Attribute n y n [RFC5311]
224-228 Unassigned
229 M-Topologies y y n [RFC5120]
230-231 Unassigned
232 IPv6 Intf. Addr. y y n [RFC5308]
233 IPv6 Global Interface Address TLV y n n [RFC-ietf-isis-ipv6-te-08.txt]
234 Unassigned
235 MT IP. Reach n y n [RFC5120]
236 IPv6 IP. Reach n y n [RFC5308]
237 MT IPv6 IP. Reach n y n [RFC5120]
238-239 Unassigned
240 P2P 3-Way Adj. State y n n [RFC3373][RFC-ietf-isis-rfc3373bis-01.txt]
241 Unassigned
242 IS-IS Router CAPABILITY TLV n y n [RFC4971]
243-249 Unassigned
250 Experimental TLV y y y IETF-draft
251-255 Unassigned
Registry Name: IS-IS Authentication Type Codes for TLV 10
Reference: [RFC5304]
Registration Procedures: Expert Review
Registry:
Value Authentication Type Code Reference
------- ------------------------------------------------ ---------
0 Reserved [ISO-10589]
1 Cleartext Password [ISO-10589]
2 ISO 10589 Reserved [ISO-10589]
3 Cryptographic Authentication (CRYPTO_AUTH) [RFC5310]
4-53 Unassigned
54 HMAC-MD5 Authentication [RFC5304]
55-254 Unassigned
255 Routing Domain private authentication method [ISO-10589]
Registry Name: Sub-TLVs for TLV 22, 141, and 222
Reference: [RFC5305][RFC5316]
Registration Procedures: Expert review
Note:
Allocations within this registry require documentation of the use of
the allocated value and approval by the Designated Expert assigned
by the IESG.
Registry:
Type Description 22 141 222 Reference
------- -------------------------------------------- -- --- --- ---------
0-2 Unassigned y y y
3 Administrative group (color) y y y [RFC5305]
4 Link Local/Remote Identifiers y y y [RFC4205][RFC5307]
5 Unassigned y y y
6 IPv4 interface address y y y [RFC5305]
7 Unassigned y y y
8 IPv4 neighbor address y y y [RFC5305]
9 Maximum link bandwidth y y y [RFC5305]
10 Maximum reservable link bandwidth y y y [RFC5305]
11 Unreserved bandwidth y y y [RFC5305]
12 IPv6 Interface Address y y y [RFC-ietf-isis-ipv6-te-08.txt]
13 IPv6 Neighbor Address y y y [RFC-ietf-isis-ipv6-te-08.txt]
14-17 Unassigned y y y
18 TE Default metric y y y [RFC5305]
19 Link-attributes y y y [RFC5029]
20 Link Protection Type y y y [RFC4205][RFC5307]
21 Interface Switching Capability Descriptor y y y [RFC4205][RFC5307]
22 Bandwidth Constraints y y y [RFC4124]
23 Unconstrained TE LSP Count (sub-)TLV y y y [RFC5330]
24 remote AS number n y n [RFC5316]
25 IPv4 remote ASBR Identifier n y n [RFC5316]
26 IPv6 remote ASBR Identifier n y n [RFC5316]
27 Interface Adjustment Capability Descriptor y y y [RFC6001]
(IACD)
28-249 Unassigned
250-254 Reserved for Cisco-specific extensions
255 Reserved for future expansion
Registry Name: link-attribute bit values for sub-TLV 19 of TLV 22
Reference: [RFC5029]
Registration Procedure: Standards Action
Note:
Early Allocation as defined by [RFC4020] is permitted.
Value Name
------ -------------------------------
0x1 Local Protection Available
0x2 Link Excluded from Local Protection
Registry Name: Sub-TLVs for TLV 135
Reference: [RFC5305]
Registration Procedures: Expert review
Note:
Allocations within this registry require documentation of the use of
the allocated value and approval by the Designated Expert assigned
by the IESG.
Registry:
Type Description Reference
------- -------------------------------------------- ---------
0 Unassigned
1 32-bit Administrative Tag Sub-TLV [RFC5130]
2 64-bit Administrative Tag Sub-TLV [RFC5130]
3-255 Unassigned
Registry Name: Sub-TLVs for TLV 235
Reference: [RFC5120]
Registration Procedures: Expert review
Note:
Allocations within this registry require documentation of the use of
the allocated value and approval by the Designated Expert assigned
by the IESG.
Registry:
Type Description Reference
------- -------------------------------------------- ---------
0 Unassigned
1 32-bit Administrative Tag Sub-TLV [RFC5130]
2 64-bit Administrative Tag Sub-TLV [RFC5130]
3-255 Unassigned
Registry Name: Sub-TLVs for TLV 236
Reference: [RFC5308]
Registration Procedures: Expert review
Note:
Allocations within this registry require documentation of the use of
the allocated value and approval by the Designated Expert assigned
by the IESG.
Registry:
Type Description Reference
------- -------------------------------------------- ---------
0 Unassigned
1 32-bit Administrative Tag Sub-TLV [RFC5130]
2 64-bit Administrative Tag Sub-TLV [RFC5130]
3-255 Unassigned
Registry Name: Sub-TLVs for TLV 237
Reference: [RFC3784][RFC5120]
Registration Procedures: Expert review
Note:
Allocations within this registry require documentation of the use of
the allocated value and approval by the Designated Expert assigned
by the IESG.
Registry:
Type Description Reference
------- -------------------------------------------- ---------
0 Unassigned
1 32-bit Administrative Tag Sub-TLV [RFC5130]
2 64-bit Administrative Tag Sub-TLV [RFC5130]
3-255 Unassigned
Registry Name: Sub-TLVs for TLV 242
Reference: [RFC3784][RFC4971]
Registration Procedures: Expert review
Note:
Allocations within this registry require documentation of the use of
the allocated value and approval by the Designated Expert assigned
by the IESG.
Registry:
Value Description Reference
----- ------------------------------ ---------
1 TE Node Capability Descriptor [RFC5073]
2 Unassigned
3 TE-MESH-GROUP TLV (IPv4) [RFC4972]
4 TE-MESH-GROUP TLV (IPv6) [RFC4972]
5 PCED sub-TLV [RFC5089]
6-10 Unassigned
11 IPv4 TE Router ID [RFC5316]
12 IPv6 TE Router ID [RFC5316]
13-255 Unassigned
References
----------
[ISO-10589]
ISO, "Intermediate System to Intermediate System Intra-
Domain Routeing Exchange Protocol for use in Conjunction
with the Protocol for Providing the Connectionless-mode
Network Service (ISO 8473)", International Standard 10589:
2002, Second Edition, 2002.
[RFC1195] R. Callon, "Use of OSI IS-IS for Routing in TCP/IP
and Dual Environments", RFC 1195, December 1990.
[RFC3358] T. Przygienda, "Optional Checksums in Intermediate
System to Intermediate System (ISIS)", RFC 3358,
August 2002.
[RFC3359] T. Przygienda, "Reserved Type, Length and Value (TLV)
Codepoints in Intermediate System to Intermediate System",
RFC 3359, August 2002.
[RFC3373] D. Katz and R. Saluja, "Three-Way Handshake for Intermediate
System to Intermediate System (IS-IS) Point-to-Point
Adjacencies", RFC 3373, September 2002.
[RFC3563] A. Zinin, "Draft of agreement between ISOC/IETF and
ISO/IEC JTC1/SC6 on IS-IS protocol development", RFC 3563,
July 2003.
[RFC3784] H. Smit, T. Li, "IS-IS extensions for Traffic Engineering",
RFC 3784, June 2004.
[RFC4124] Le Faucheur, F., Ed., "Protocol extensions for support of
Differentiated-Service-aware MPLS Traffic Engineering",
RFC 4124, June 2005.
[RFC4205] K. Kompella,, Y. Rekhter, Eds., "IS-IS Extensions in Support of
Generalized Multi-Protocol Label Switching", RFC 4205, October 2005.
[RFC4971] J. Vasseur, N. Shen, R. Aggarwal, "IS-IS Extensions for
Advertising Router Information", RFC 4971, July 2007.
[RFC4972] JP. Vasseur, Ed., JL. Leroux, Ed., S. Yasukawa, S. Previdi, P. Psenak
and P. Mabbey, "Routing Extensions for Discovery of Multiprotocol (MPLS)
Label Switch Router (LSR) Traffic Engineering (TE) Mesh Membership",
RFC 4972, July 2007.
[RFC5029] JP. Vasseur, S. Previdi, "Definition of an IS-IS Link Attribute
sub-TLV", RFC 5029, September 2007.
[RFC5073] J.P. Vasseur, Ed., J.L. Le Roux. Ed., "IGP Routing Protocol
Extensions for Discovery of Traffic Engineering Node Capabilities",
RFC 5073, December 2007.
[RFC5089] J.L. Le Roux, Ed., J.P. Vasseur, Ed., Y.Ikejiri, R. Zhang, "IS-IS
Protocol Extensions for Path Computation Element (PCE) Discovery",
RFC 5089, January 2008.
[RFC5120] T. Przygienda, N. Shen, N. Sheth, "M-ISIS: Multi Topology (MT)
Routing in IS-IS", RFC 5120, February 2008.
[RFC5130] S. Previdi, M. Shand, Ed., C. Martin, B. Neal, "A Policy Control
Mechanism in IS-IS Using Administrative Tags", RFC 5130, February 2008.
[RFC-ietf-isis-rfc3373bis-01.txt]
D. Katz, R. Saluja, D. Eastlake, "Three-Way Handshake for Intermediate
System to Intermediate System (IS-IS) Point-to-Point Adjacencies", RFC
XXXX, Month Year.
[RFC5301] D. McPherson, N. Shen, "Dynamic Hostname Exchange Mechanism for IS-IS",
RFC 5301, October 2008.
[RFC5304] T. Li and R. Atkinson, "IS-IS Cryptographic Authentication",
RFC 5304, October 2008.
[RFC5305] T. Li, H. Smit, "IS-IS extensions for Traffic Engineering", RFC 5305,
October 2008.
[RFC5306] M. Shand, L. Ginsberg, "Restart Signaling for Intermediate System to
Intermediate System (IS-IS)", RFC 5306, October 2008.
[RFC5307] K. Kompella, Ed., Y. Rekhter, Ed., "Intermediate System to Intermediate
System (IS-IS) Extensions in Support of Generalized Multi-Protocol Label
Switching (GMPLS)", RFC 5307, October 2008.
[RFC5308] C. Hopps, "Routing IPv6 with IS-IS", RFC 5308, October 2008.
[RFC5330] J. Vasseur, Ed., M. Meyer, K. Kumaki, A. Tempia Bonda, "A Link-Type sub-TLV
to convey the number of Traffic Engineering Label Switched Paths signalled
with zero reserved bandwidth across a link", RFC 5330, October 2008.
[RFC5316] M. Chen, R. Zhang, X. Duan, "ISIS Extensions in Support of Inter-AS
Multiprotocol Label Switching", RFC 5316, December 2008.
[RFC-ietf-isis-ipv6-te-08.txt]
J. Harrison, J. Berger, M. Bartlett, "IPv6 Traffic Engineering in IS-IS",
RFC XXXX, Month Year.
(created 2003-05-06)