Internet Assigned Numbers Authority
Border Gateway Protocol - Link State (BGP-LS) Parameters
Created
2015-11-03
Last Updated
2025-07-21
Available Formats
[IMG]
XML [IMG]
HTML [IMG]
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
[IMG]
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
[IMG]
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
[IMG]
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
[IMG]
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) [RFC9815]
1181 Sequence Number [RFC9815, Section 5.2.4]
1182 IPv4 Link Prefix Length (DEPRECATED) [RFC9815]
1183 IPv6 Link Prefix Length (DEPRECATED) [RFC9815]
1184 SPF Status [RFC9815, Sections 5.2.1.1, 5.2.2.2, 5.2.3.1]
1185 Address Family Link Descriptor [RFC9815, 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
[IMG]
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
[IMG]
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
[IMG]
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
[IMG]
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
[IMG]
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 [RFC-ietf-idr-bgp-ls-sr-policy-17] IETF
Local & Remote nodes
8 (Type H) SR-MPLS Adjacency SID as pair of IPv6 Global Addresses for the Local & [RFC-ietf-idr-bgp-ls-sr-policy-17] IETF
Remote Interface
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 [RFC-ietf-idr-bgp-ls-sr-policy-17] IETF
& Remote nodes
11 (Type K) SRv6 END.X SID as pair of IPv6 Global Addresses for the Local & Remote [RFC-ietf-idr-bgp-ls-sr-policy-17] IETF
Interface
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
[IMG]
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
Licensing Terms
Presently we were in a very dark road, and at a point where it dropped suddenly between steep sides we halted in black shadow. A gleam of pale sand, a whisper of deep flowing waters, and a farther glimmer of more sands beyond them challenged our advance. We had come to a "grapevine ferry." The scow was on the other side, the water too shoal for the horses to swim, and the bottom, most likely, quicksand. Out of the blackness of the opposite shore came a soft, high-pitched, quavering, long-drawn, smothered moan of woe, the call of that snivelling little sinner the screech-owl. Ferry murmured to me to answer it and I sent the same faint horror-stricken tremolo back. Again it came to us, from not farther than one might toss his cap, and I followed Ferry down to the water's edge. The grapevine guy swayed at our side, we heard the scow slide from the sands, and in a few moments, moved by two videttes, it touched our shore. Soon we were across, the two videttes riding with us, and beyond a sharp rise, in an old opening made by the swoop of a hurricane, we entered the silent unlighted bivouac of Ferry's scouts. Ferry got down and sat on the earth talking with Quinn, while the sergeants quietly roused the sleepers to horse. Plotinus is driven by this perplexity to reconsider the whole theory of Matter.477 He takes Aristotle¡¯s doctrine as the groundwork of his investigation. According to this, all existence is divided into Matter and Form. What we know of things¡ªin other words, the sum of their differential characteristics¡ªis their Form. Take away this, and the unknowable residuum is their Matter. Again, Matter is the vague indeterminate something out of which particular Forms are developed. The two are related as Possibility to Actuality, as the more generic to the more specific substance through every grade of classification and composition. Thus there are two Matters, the one sensible and the other intelligible. The former constitutes the common substratum of bodies, the other the common element of ideas.478 The general distinction between Matter and Form was originally suggested to Aristotle by Plato¡¯s remarks on the same subject; but he differs325 from his master in two important particulars. Plato, in his Timaeus, seems to identify Matter with space.479 So far, it is a much more positive conception than the ?λη of the Metaphysics. On the other hand, he constantly opposes it to reality as something non-existent; and he at least implies that it is opposed to absolute good as a principle of absolute evil.480 Thus while the Aristotelian world is formed by the development of Power into Actuality, the Platonic world is composed by the union of Being and not-Being, of the Same and the Different, of the One and the Many, of the Limit and the Unlimited, of Good and Evil, in varying proportions with each other. The Lawton woman had heard of an officer's family at Grant, which was in need of a cook, and had gone there. [See larger version] On the 8th of July an extraordinary Privy Council was summoned. All the members, of whatever party, were desired to attend, and many were the speculations as to the object of their meeting. The general notion was that it involved the continuing or the ending of the war. It turned out to be for the announcement of the king's intended marriage. The lady selected was Charlotte, the second sister of the Duke of Mecklenburg-Strelitz. Apart from the narrowness of her education, the young princess had a considerable amount of amiability, good sense, and domestic taste. These she shared with her intended husband, and whilst they made the royal couple always retiring, at the same time they caused them to give, during their lives, a moral air to their court. On the 8th of September Charlotte arrived at St. James's, and that afternoon the marriage took place, the ceremony being performed by the Archbishop of Canterbury. On the 22nd the coronation took place with the greatest splendour. Mother and girls were inconsolable, for each had something that they were sure "Si would like," and would "do him good," but they knew Josiah Klegg, Sr., well enough to understand what was the condition when he had once made up his mind. CHAPTER V. THE YOUNG RECRUITS Si proceeded to deftly construct a litter out of the two guns, with some sticks that he cut with a knife, and bound with pawpaw strips. His voice had sunk very low, almost to sweetness. A soft flurry of pink went over her face, and her eyelids drooped. Then suddenly she braced herself, pulled herself taut, grew combative again, though her voice shook. HoME²Ô¾®Ïè̫ʲôÐÇ×ù
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