OSPFv3 Link State Advertisement (LSA) Extensibility, April 2018
- Canonical URL:
- File formats:
- PROPOSED STANDARD
- RFC 5340, RFC 5838
- A. Lindem
V. Reddy Vallem
- ospf (rtg)
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OSPFv3 requires functional extension beyond what can readily be done with the fixed-format Link State Advertisement (LSA) as described in RFC 5340. Without LSA extension, attributes associated with OSPFv3 links and advertised IPv6 prefixes must be advertised in separate LSAs and correlated to the fixed-format LSAs. This document extends the LSA format by encoding the existing OSPFv3 LSA information in Type-Length-Value (TLV) tuples and allowing advertisement of additional information with additional TLVs. Backward-compatibility mechanisms are also described. This document updates RFC 5340, "OSPF for IPv6", and RFC 5838, "Support of Address Families in OSPFv3", by providing TLV-based encodings for the base OSPFv3 unicast support and OSPFv3 address family support.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.