The MPLS WG Archive

[Bora Akyol <akyol@pluris.com>]

When filling in the ERO, there are three options:

1) Put in the router ID of the routers. This does not work for cases
when routers have multiple links and for unnumbered interfaces.

2) Put in the egress interface of the routers on the path and finish it
with the router ID of the final router. So that from router A to router
B, we represent the hop as the IP address/interface index of the
interface from A to B on router A.

3) Put in the ingress interface of the routers on the path starting with
the router ID of ingress and finishing with the router ID of the egress
LSRs. This is kind of opposite of (2).

I believe that (2) is the only option that works with unnumbered
interfaces.

Does anyone think otherwise?

Bora