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]

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]

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

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

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

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

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

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

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

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

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]

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

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