RFC 7770

Extensions to OSPF for Advertising Optional Router Capabilities, February 2016

Canonical URL:
File formats:
Plain TextPDF
RFC 4970
A. Lindem, Ed.
N. Shen
JP. Vasseur
R. Aggarwal
S. Shaffer
ospf (rtg)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC7770

Discuss this RFC: Send questions or comments to lsr@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF


It is useful for routers in an OSPFv2 or OSPFv3 routing domain to know the capabilities of their neighbors and other routers in the routing domain. This document proposes extensions to OSPFv2 and OSPFv3 for advertising optional router capabilities. The Router Information (RI) Link State Advertisement (LSA) is defined for this purpose. In OSPFv2, the RI LSA will be implemented with an Opaque LSA type ID. In OSPFv3, the RI LSA will be implemented with a unique LSA type function code. In both protocols, the RI LSA can be advertised at any of the defined flooding scopes (link, area, or autonomous system (AS)). This document obsoletes RFC 4970 by providing a revised specification that includes support for advertisement of multiple instances of the RI LSA and a TLV for functional capabilities.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.

Download PDF Reader