Value	Top Level Types	Reference
0	Reserved	[RFC3630]
1	Router Address	[RFC3630]
2	Link	[RFC3630]
3	Router IPv6 Address	[RFC5329]
4	Link Local	[RFC4203]
5	Node Attribute	[RFC5786]
6	Optical Node Property	[RFC7688]
7-32767	Unassigned
32768-32777	Reserved for Experimental Use	[RFC3630]
32778-65535	Reserved	[RFC3630]

Value	Sub-TLV	Reference
0	Reserved	[RFC6827]
1-11	Unassigned
12	Inter-RA Export Upward sub-TLV	[RFC6827]
13	Inter-RA Export Downward sub-TLV	[RFC6827]
14-32767	Unassigned
32768-32777	Reserved for Experimental Use	[RFC6827]
32778-65535	Reserved	[RFC6827]

Value	Sub-TLV	Reference
0	Reserved	[RFC3630]
1	Link type (1 octet)	[RFC3630]
2	Link ID (4 octets)	[RFC3630]
3	Local interface IP address (4 octets)	[RFC3630]
4	Remote interface IP address (4 octets)	[RFC3630]
5	Traffic engineering metric (4 octets)	[RFC3630]
6	Maximum bandwidth (4 octets)	[RFC3630]
7	Maximum reservable bandwidth (4 octets)	[RFC3630]
8	Unreserved bandwidth (32 octets)	[RFC3630]
9	Administrative group (4 octets)	[RFC3630]
10	Local and Remote TE Router ID sub-TLV	[RFC6827]
11	Link Local/Remote Identifiers (8 octets)	[RFC4203]
12	Inter-RA Export Upward sub-TLV	[RFC6827]
13	Inter-RA Export Downward sub-TLV	[RFC6827]
14	Link Protection Type (4 octets)	[RFC4203]
15	Interface Switching Capability Descriptor (variable)	[RFC4203]
16	Shared Risk Link Group (variable)	[RFC4203]
17	Bandwidth Constraints	[RFC4124]
18	Neighbor ID	[RFC5329]
19	Local Interface IPv6 Address	[RFC5329]
20	Remote Interface IPv6 Address	[RFC5329]
21	Remote AS Number sub-TLV	[RFC5392]
22	IPv4 Remote ASBR ID sub-TLV	[RFC5392]
23	Unconstrained TE LSP Count (sub-)TLV	[RFC5330]
24	IPv6 Remote ASBR ID sub-TLV	[RFC5392]
25	Interface Adjustment Capability Descriptor (IACD)	[RFC6001]
26	Extended Administrative Group	[RFC7308]
27	Unidirectional Link Delay	[RFC7471]
28	Min/Max Unidirectional Link Delay	[RFC7471]
29	Unidirectional Delay Variation	[RFC7471]
30	Unidirectional Link Loss	[RFC7471]
31	Unidirectional Residual Bandwidth	[RFC7471]
32	Unidirectional Available Bandwidth	[RFC7471]
33	Unidirectional Utilized Bandwidth	[RFC7471]
34	Port Label Restrictions	[RFC7580]
35	Network-to-Router TE Metric Sub-TLV	[RFC8042]
36	Generic Metric	[RFC9843, Section 2.2]
37-32767	Unassigned
32768-32777	Reserved for Experimental Use	[RFC3630]
32778-65535	Reserved	[RFC3630]

Value	Sub-TLV	Reference
0	Reserved	[RFC5786]
1	Node IPv4 Local Address	[RFC5786]
2	Node IPv6 Local Address	[RFC5786]
3-4	Unassigned
5	Local TE Router ID sub-TLV	[RFC6827]
6-11	Unassigned
12	Inter-RA Export Upward sub-TLV	[RFC6827]
13	Inter-RA Export Downward sub-TLV	[RFC6827]
14	Connectivity Matrix	[RFC7580]
15-32767	Unassigned
32768-32777	Reserved for Experimental Use	[RFC5786]
32778-65535	Reserved	[RFC5786]

Value	Length	Sub-TLV	Reference
0		Reserved	[RFC7688]
1	variable	Resource Block Information	[RFC7688]
2	variable	Resource Accessibility	[RFC7688]
3	variable	Resource Wavelength Constraints	[RFC7688]
4	variable	Resource Block Pool State	[RFC7688]
5	variable	Resource Block Shared Access Wavelength Availability	[RFC7688]
6-65535		Unassigned

Value	Sub-TLV	Reference
0	Reserved	[RFC7138]
1	Unreserved Bandwidth for fixed containers	[RFC7138]
2	Unreserved/MAX Bandwidth for flexible containers	[RFC7138]
3-65535	Unassigned

Value	Sub-TLV	Reference
0	Reserved	[RFC7688]
1	Available Labels	[RFC7688]
2	Shared Backup Labels	[RFC7688]
3-65535	Unassigned

Open Shortest Path First (OSPF) Traffic Engineering TLVs

Top Level Types in TE LSAs

Types for sub-TLVs of Router Address TLV (Value 1)

Types for sub-TLVs of TE Link TLV (Value 2)

Types for sub-TLVs of TE Node Attribute TLV (Value 5)

Types for sub-TLVs of Optical Node Property (Value 6)

Types for sub-TLVs of OTN-TDM SCSI (Switching Capability Specific Information)

Types for sub-TLVs of WSON-LSC SCSI (Switching Capability Specific Information)