IS-IS TLV Codepoints (last updated 2009-02-10) 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: The range of values is 0-255. Allocation of values in the registry has to be approved by the designated expert assigned by the IESG. 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: Name Value IIH LSP SNP Status/Reference ------------------------------------ ----- ---- --- ---- ---------------- 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 [RFC3358] LSPBufferSize 14 n y n ISO 10589 Rev 2 Draft Encapsulation Cap 16 n y n IETF-draft The extended IS reachability TLV 22 n y n [RFC5305] IS Neighbor Attribute 23 n y n [RFC5311] IS Alias ID 24 n y n [RFC5311] DECnet Phase IV 42 y n n DEC (ancient) Lucent Proprietary 66 n y n IP Int. Reach 128 n y n [RFC1195] Prot. Supported 129 y y n [RFC1195] IP Ext. Address 130 n y n [RFC1195] IDRPI 131 n y y [RFC1195] IP Intf. Address 132 y y n [RFC1195] Illegal 133 n n n [RFC1195] (not used) The Traffic Engineering router ID TLV 134 n y n [RFC5305] The extended IP reachability TLV 135 n y n [RFC5305] Dynamic Name 137 n y n [RFC5301] GMPLS-SRLG 138 n y n [RFC4205][RFC5307] inter-AS reachability information 141 n y n [RFC5316] Nortel Proprietary 176 n y n Nortel Proprietary 177 n y n Restart TLV 211 y n n [RFC5306] MT-ISN 222 n y n [RFC5120] MT IS Neighbor Attribute 223 n y n [RFC5311] M-Topologies 229 y y n [RFC5120] IPv6 Intf. Addr. 232 y y n [RFC5308] MT IP. Reach 235 n y n [RFC5120] IPv6 IP. Reach 236 n y n [RFC5308] MT IPv6 IP. Reach 237 n y n [RFC5120] P2P 3-Way Adj. State 240 y n n [RFC3373][RFC-ietf-isis-rfc3373bis-01.txt] IS-IS Router CAPABILITY TLV 242 n y n [RFC4971] Experimental TLV 250 y y y IETF-draft 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] 12-17 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] 27-249 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. (created 2003-05-06) [] IS-IS TLV Codepoints per [RFC3563] (last updated 2008-12-10) 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: The range of values is 0-255. Allocation of values in the registry has to be approved by the designated expert assigned by the IESG. 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: Name Value IIH LSP SNP Status/Reference ------------------------------------ ----- ---- --- ---- ---------------- 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 [RFC3358] LSPBufferSize 14 n y n ISO 10589 Rev 2 Draft Encapsulation Cap 16 n y n IETF-draft The extended IS reachability TLV 22 n y n [RFC5305] DECnet Phase IV 42 y n n DEC (ancient) Lucent Proprietary 66 n y n IP Int. Reach 128 n y n [RFC1195] Prot. Supported 129 y y n [RFC1195] IP Ext. Address 130 n y n [RFC1195] IDRPI 131 n y y [RFC1195] IP Intf. Address 132 y y n [RFC1195] Illegal 133 n n n [RFC1195] (not used) The Traffic Engineering router ID TLV 134 n y n [RFC5305] The extended IP reachability TLV 135 n y n [RFC5305] Dynamic Name 137 n y n [RFC5301] GMPLS-SRLG 138 n y n [RFC4205][RFC5307] inter-AS reachability information 141 n y n [RFC5316] Nortel Proprietary 176 n y n Nortel Proprietary 177 n y n Restart TLV 211 y n n [RFC5306] MT-ISN 222 n y n [RFC5120] M-Topologies 229 y y n [RFC5120] IPv6 Intf. Addr. 232 y y n [RFC5308] MT IP. Reach 235 n y n [RFC5120] IPv6 IP. Reach 236 n y n [RFC5308] MT IPv6 IP. Reach 237 n y n [RFC5120] P2P 3-Way Adj. State 240 y n n [RFC3373][RFC-ietf-isis-rfc3373bis-01.txt] IS-IS Router CAPABILITY TLV 242 n y n [RFC4971] Experimental TLV 250 y y y IETF-draft 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] 3-53 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] 12-17 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] 27-249 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. [RFC5316] M. Chen, R. Zhang, X. Duan, "ISIS Extensions in Support of Inter-AS Multiprotocol Label Switching", RFC 5316, December 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. [RFC5310] M. Bhatia, V. Manral, T. Li, R. Atkinson, R. White, M. Fanto, "IS-IS Generic Cryptographic Authentication", RFC 5310, February 2009. [RFC5311] D. McPherson, Ed., L. Ginsberg, S. Previdi, M. Shand, "Simplified Extension of LSP Space for IS-IS", RFC 5311, February 2009. (created 2003-05-06) []