Technical Summary
The Segment Routing (SR) architecture allows a flexible definition of
the end-to-end path by encoding it as a sequence of topological
elements called segments. It can be implemented over an MPLS or IPv6
data plane. This document describes the OSPFv3 extensions required
to support Segment Routing over the IPv6 data plane (SRv6).
Working Group Summary
There was no real controversy although there was discussion as to whether it
was a good idea to have separate Link State Advertisements (LSAs) for the
SRv6 Locators as opposed to using the existing LSAs. Unlike IS-IS, one of
the advantages of OSPFv3 is that disjoint information can be advertised in
separate LSAs.
Review by OSPFv3 implementors revealed that the OSPFv3 PrefixOptions needed
to be advertised in the SRv6 Locator TLV. This specification adds the AC-Bit
(AnyCast Bit) which is applicable to all usages of the OSPFv3 PrefixOptions.
Document Quality
The shepherd's report notes nothing exceptional, and doesn't identify any
implementations other than "a Huawei implemenation underway but it has not
been released yet and there is no report."
Personnel
The Document Shepherd for this document is Acee Lindem. The Responsible
Area Director is John Scudder.