Border Gateway Protocol - Link State (BGP-LS) Parameters

Created

2015-11-03

Last Updated

2025-03-17

Available Formats

XML
HTML
Plain text

Registries included below

• BGP-LS NLRI Types
• BGP-LS Protocol-IDs
• BGP-LS Well-Known Instance-IDs (OBSOLETE)
• BGP-LS NLRI and Attribute TLVs
• SRv6 BGP EPE SID Flags
• BGP-LS Node Flags
• BGP-LS MPLS Protocol Mask
• BGP-LS IGP Prefix Flags
• BGP-LS SR Segment Descriptor Types
• BGP-LS SR Policy Metric Types

BGP-LS NLRI Types

Expert(s)

Hannes Gredler (primary), Adrian Farrel (secondary)

Reference

[RFC9552]

Available Formats

CSV

Range	Registration Procedures
1-64999	Expert Review
65000-65535	Private Use

Type	NLRI Type	Reference
0	Reserved	[RFC9552]
1	Node NLRI	[RFC9552]
2	Link NLRI	[RFC9552]
3	IPv4 Topology Prefix NLRI	[RFC9552]
4	IPv6 Topology Prefix NLRI	[RFC9552]
5	SR Policy Candidate Path NLRI	[RFC-ietf-idr-bgp-ls-sr-policy-17]
6	SRv6 SID NLRI	[RFC9514]
7	Stub Link NLRI	[draft-ietf-idr-bgpls-inter-as-topology-ext-17]
8-1100	Unassigned
1101	Not to be allocated
1102-64999	Unassigned
65000-65535	Private Use	[RFC9552]

BGP-LS Protocol-IDs

Expert(s)

Hannes Gredler (primary), Adrian Farrel (secondary)

Reference

[RFC9552]

Available Formats

CSV

Range	Registration Procedures
1-199	Expert Review
200-255	Private Use

Protocol-ID	NLRI information source protocol	Reference
0	Reserved	[RFC9552]
1	IS-IS Level 1	[RFC9552]
2	IS-IS Level 2	[RFC9552]
3	OSPFv2	[RFC9552]
4	Direct	[RFC9552]
5	Static configuration	[RFC9552]
6	OSPFv3	[RFC9552]
7	BGP	[RFC9086]
8	RSVP-TE	[draft-ietf-idr-bgp-ls-te-path-01]
9	Segment Routing	[RFC-ietf-idr-bgp-ls-sr-policy-17]
10-199	Unassigned
200-255	Private Use	[RFC9552]

BGP-LS Well-Known Instance-IDs (OBSOLETE)

Registration Procedure(s)

Registry closed

Reference

[RFC9552]

Available Formats

CSV

Identifier	Routing Universe	Reference
0	Default Layer 3 Routing topology	[RFC9552]
1-31	Unassigned
32 - 2^64-1	Private use - not recorded	[RFC9552]

BGP-LS NLRI and Attribute TLVs

Expert(s)

Hannes Gredler (primary), Adrian Farrel (secondary)

Reference

[RFC9552]

Available Formats

CSV

Range	Registration Procedures
0-255	Reserved (not to be allocated)
256-64999	Expert Review
65000-65535	Private Use

TLV Code Point	Description	Reference
0-255	Reserved	[RFC9552]
256	Local Node Descriptors	[RFC9552, Section 5.2.1.2]
257	Remote Node Descriptors	[RFC9552, Section 5.2.1.3]
258	Link Local/Remote Identifiers	[RFC9552, Section 5.2.2]
259	IPv4 interface address	[RFC9552, Section 5.2.2]
260	IPv4 neighbor address	[RFC9552, Section 5.2.2]
261	IPv6 interface address	[RFC9552, Section 5.2.2]
262	IPv6 neighbor address	[RFC9552, Section 5.2.2]
263	Multi-Topology Identifier	[RFC9552, Section 5.2.2.1]
264	OSPF Route Type	[RFC9552, Section 5.2.3.1]
265	IP Reachability Information	[RFC9552, Section 5.2.3.2]
266	Node MSD	[RFC8814]
267	Link MSD	[RFC8814]
268-269	Unassigned
270	Remote AS Number	[draft-ietf-idr-bgpls-inter-as-topology-ext-17]
271	IPv4 Remote ASBR ID	[draft-ietf-idr-bgpls-inter-as-topology-ext-17]
272	IPv6 Remote ASBR ID	[draft-ietf-idr-bgpls-inter-as-topology-ext-17]
273-511	Unassigned
512	Autonomous System	[RFC9552, Section 5.2.1.4]
513	BGP-LS Identifier (deprecated)	[RFC9552, Section 5.2.1.4]
514	OSPF Area-ID	[RFC9552, Section 5.2.1.4]
515	IGP Router-ID	[RFC9552, Section 5.2.1.4]
516	BGP Router-ID	[RFC9086]
517	BGP Confederation Member	[RFC9086]
518	SRv6 SID Information	[RFC9514]
519-549	Unassigned
550	Tunnel ID	[draft-ietf-idr-bgp-ls-te-path-01]
551	LSP ID	[draft-ietf-idr-bgp-ls-te-path-01]
552	IPv4/6 Tunnel Head-end address	[draft-ietf-idr-bgp-ls-te-path-01]
553	IPv4/6 Tunnel Tail-end address	[draft-ietf-idr-bgp-ls-te-path-01]
554	SR Policy Candidate Path Descriptor	[RFC-ietf-idr-bgp-ls-sr-policy-17]
555	MPLS Local Cross Connect	[draft-ietf-idr-bgp-ls-te-path-01]
556	MPLS Cross Connect Interface	[draft-ietf-idr-bgp-ls-te-path-01]
557	MPLS Cross Connect FEC	[draft-ietf-idr-bgp-ls-te-path-01]
558-1023	Unassigned
1024	Node Flag Bits	[RFC9552, Section 5.3.1.1]
1025	Opaque Node Attribute	[RFC9552, Section 5.3.1.5]
1026	Node Name	[RFC9552, Section 5.3.1.3]
1027	IS-IS Area Identifier	[RFC9552, Section 5.3.1.2]
1028	IPv4 Router-ID of Local Node	[RFC9552, Section 5.3.1.4/Section 5.3.2.1]
1029	IPv6 Router-ID of Local Node	[RFC9552, Section 5.3.1.4/Section 5.3.2.1]
1030	IPv4 Router-ID of Remote Node	[RFC9552, Section 5.3.2.1]
1031	IPv6 Router-ID of Remote Node	[RFC9552, Section 5.3.2.1]
1032	S-BFD Discriminators	[RFC9247]
1033	Unassigned
1034	SR Capabilities	[RFC9085, Section 2.1.2]
1035	SR Algorithm	[RFC9085, Section 2.1.3]
1036	SR Local Block	[RFC9085, Section 2.1.4]
1037	SRMS Preference	[RFC9085, Section 2.1.5]
1038	SRv6 Capabilities	[RFC9514]
1039	Flexible Algorithm Definition	[RFC9351]
1040	Flexible Algorithm Exclude-Any Affinity	[RFC9351]
1041	Flexible Algorithm Include-Any Affinity	[RFC9351]
1042	Flexible Algorithm Include-All Affinity	[RFC9351]
1043	Flexible Algorithm Definition Flags	[RFC9351]
1044	Flexible Algorithm Prefix Metric	[RFC9351]
1045	Flexible Algorithm Exclude SRLG	[RFC9351]
1046	Flexible Algorithm Unsupported	[RFC9351]
1047-1087	Unassigned
1088	Administrative group (color)	[RFC9552, Section 5.3.2]
1089	Maximum link bandwidth	[RFC9552, Section 5.3.2]
1090	Max. reservable link bandwidth	[RFC9552, Section 5.3.2]
1091	Unreserved bandwidth	[RFC9552, Section 5.3.2]
1092	TE Default Metric	[RFC9552, Section 5.3.2.3]
1093	Link Protection Type	[RFC9552, Section 5.3.2]
1094	MPLS Protocol Mask	[RFC9552, Section 5.3.2.2]
1095	IGP Metric	[RFC9552, Section 5.3.2.4]
1096	Shared Risk Link Group	[RFC9552, Section 5.3.2.5]
1097	Opaque Link Attribute	[RFC9552, Section 5.3.2.6]
1098	Link Name	[RFC9552, Section 5.3.2.7]
1099	Adjacency SID	[RFC9085, Section 2.2.1]
1100	LAN Adjacency SID	[RFC9085, Section 2.2.2]
1101	PeerNode SID	[RFC9086]
1102	PeerAdj SID	[RFC9086]
1103	PeerSet SID	[RFC9086]
1104	Unassigned
1105	RTM Capability	[RFC8169]
1106	SRv6 End.X SID	[RFC9514]
1107	IS-IS SRv6 LAN End.X SID	[RFC9514]
1108	OSPFv3 SRv6 LAN End.X SID	[RFC9514]
1109-1113	Unassigned
1114	Unidirectional Link Delay	[RFC8571]
1115	Min/Max Unidirectional Link Delay	[RFC8571]
1116	Unidirectional Delay Variation	[RFC8571]
1117	Unidirectional Link Loss	[RFC8571]
1118	Unidirectional Residual Bandwidth	[RFC8571]
1119	Unidirectional Available Bandwidth	[RFC8571]
1120	Unidirectional Utilized Bandwidth	[RFC8571]
1121	Graceful-Link-Shutdown TLV	[RFC8379]
1122	Application-Specific Link Attributes	[RFC9294]
1123-1151	Unassigned
1152	IGP Flags	[RFC9552, Section 5.3.3.1]
1153	IGP Route Tag	[RFC9552, Section 5.3.3.2]
1154	IGP Extended Route Tag	[RFC9552, Section 5.3.3.3]
1155	Prefix Metric	[RFC9552, Section 5.3.3.4]
1156	OSPF Forwarding Address	[RFC9552, Section 5.3.3.5]
1157	Opaque Prefix Attribute	[RFC9552, Section 5.3.3.6]
1158	Prefix-SID	[RFC9085, Section 2.3.1]
1159	Range	[RFC9085, Section 2.3.5]
1160	IS-IS Flood Reflection	[draft-ietf-idr-bgp-ls-isis-flood-reflection-02]
1161	SID/Label	[RFC9085, Section 2.1.1]
1162	SRv6 Locator	[RFC9514]
1163-1169	Unassigned
1170	Prefix Attributes Flags	[RFC9085, Section 2.3.2]
1171	Source Router Identifier	[RFC9085, Section 2.3.3]
1172	L2 Bundle Member Attributes	[RFC9085, Section 2.2.3]
1173	Extended Administrative Group	[RFC9104]
1174	Source OSPF Router-ID	[RFC9085, Section 2.3.4]
1175-1179	Unassigned
1180	SPF Capability (DEPRECATED)	[RFC-ietf-lsvr-bgp-spf-51]
1181	Sequence Number	[RFC-ietf-lsvr-bgp-spf-51, Section 5.2.4]
1182	IPv4 Link Prefix Length (DEPRECATED)	[RFC-ietf-lsvr-bgp-spf-51]
1183	IPv6 Link Prefix Length (DEPRECATED)	[RFC-ietf-lsvr-bgp-spf-51]
1184	SPF Status	[RFC-ietf-lsvr-bgp-spf-51, Sections 5.2.1.1, 5.2.2.2, 5.2.3.1]
1185	Address Family Link Descriptor	[RFC-ietf-lsvr-bgp-spf-51, Section 5.2.2.1]
1186-1199	Unassigned
1200	MPLS-TE Path State	[draft-ietf-idr-bgp-ls-te-path-01]
1201	SR Binding SID	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1202	SR Candidate Path State	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1203	SR Candidate Path Name	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1204	SR Candidate Path Constraints	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1205	SR Segment List	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1206	SR Segment	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1207	SR Segment List Metric	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1208	SR Affinity Constraint	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1209	SR SRLG Constraint	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1210	SR Bandwidth Constraint	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1211	SR Disjoint Group Constraint	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1212	SRv6 Binding SID	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1213	SR Policy Name	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1214	SR Bidirectional Group Constraint	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1215	SR Metric Constraint	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1216	SR Segment List Bandwidth	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1217	SR Segment List Identifier	[RFC-ietf-idr-bgp-ls-sr-policy-17]
1218-1219	Unassigned
1220	NRP	[draft-ietf-idr-bgp-ls-sr-policy-nrp-00]
1221-1249	Unassigned
1250	SRv6 Endpoint Behavior	[RFC9514]
1251	SRv6 BGP PeerNode SID	[RFC9514]
1252	SRv6 SID Structure	[RFC9514]
1253-64999	Unassigned
65000-65535	Private Use	[RFC9552]

SRv6 BGP EPE SID Flags

Registration Procedure(s)

Standards Action

Reference

[RFC9514]

Available Formats

CSV

Bit	Description	Reference
0	Backup Flag (B-Flag)	[RFC9514]
1	Set Flag (S-Flag)	[RFC9514]
2	Persistent Flag (P-Flag)	[RFC9514]
3-7	Unassigned

BGP-LS Node Flags

Registration Procedure(s)

Expert Review

Expert(s)

Adrian Farrel, Hannes Gredler

Reference

[RFC9552]

Available Formats

CSV

Bit	Description	Reference
0	Overload Bit (O-bit)	[RFC9552]
1	Attached Bit (A-bit)	[RFC9552]
2	External Bit (E-bit)	[RFC9552]
3	ABR Bit (B-bit)	[RFC9552]
4	Router Bit (R-bit)	[RFC9552]
5	V6 Bit (V-bit)	[RFC9552]
6-7	Unassigned

BGP-LS MPLS Protocol Mask

Registration Procedure(s)

Expert Review

Expert(s)

Adrian Farrel, Hannes Gredler

Reference

[RFC9552]

Available Formats

CSV

Bit	Description	Reference
0	Label Distribution Protocol (L-bit)	[RFC9552]
1	Extension to RSVP for LSP Tunnels (R-bit)	[RFC9552]
2-7	Unassigned

BGP-LS IGP Prefix Flags

Registration Procedure(s)

Expert Review

Expert(s)

Adrian Farrel, Hannes Gredler

Reference

[RFC9552]

Available Formats

CSV

Bit	Description	Reference
0	IS-IS Up/Down Bit (D-bit)	[RFC9552]
1	OSPF "no unicast" Bit (N-bit)	[RFC9552]
2	OSPF "local address" Bit (L-bit)	[RFC9552]
3	OSPF "propagate NSSA" Bit (P-bit)	[RFC9552]
4-7	Unassigned

BGP-LS SR Segment Descriptor Types

Registration Procedure(s)

Expert Review

Expert(s)

Unassigned

Reference

[RFC-ietf-idr-bgp-ls-sr-policy-17]

Available Formats

CSV

Code Point	Segment Descriptor	Reference	Change Controller
0	Reserved	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
1	(Type A) SR-MPLS Label	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
2	(Type B) SRv6 SID as IPv6 address	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
3	(Type C) SR-MPLS Prefix SID as IPv4 Node Address	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
4	(Type D) SR-MPLS Prefix SID as IPv6 Node Global Address	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
5	(Type E) SR-MPLS Adjacency SID as IPv4 Node Address & Local Interface ID	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
6	(Type F) SR-MPLS Adjacency SID as IPv4 Local & Remote Interface Addresses	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
7	(Type G) SR-MPLS Adjacency SID as pair of IPv6 Global Address & Interface ID for Local & Remote nodes	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
8	(Type H) SR-MPLS Adjacency SID as pair of IPv6 Global Addresses for the Local & Remote Interface	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
9	(Type I) SRv6 END SID as IPv6 Node Global Address	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
10	(Type J) SRv6 END.X SID as pair of IPv6 Global Address & Interface ID for Local & Remote nodes	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
11	(Type K) SRv6 END.X SID as pair of IPv6 Global Addresses for the Local & Remote Interface	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
12-255	Unassigned

BGP-LS SR Policy Metric Types

Registration Procedure(s)

Expert Review

Expert(s)

Unassigned

Reference

[RFC-ietf-idr-bgp-ls-sr-policy-17]

Available Formats

CSV

Code Point	Metric Type	Reference	Change Controller
0	IGP	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
1	Min Unidirectional Delay	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
2	TE	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
3	Hop Count	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
4	SID List Length	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
5	Bandwidth	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
6	Avg Unidirectional Delay	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
7	Unidirectional Delay Variation	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
8	Loss	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF
9-127	Unassigned
128-255	User Defined	[RFC-ietf-idr-bgp-ls-sr-policy-17]	IETF