The MPLS WG Archive

[Guangzhi Li <gli@research.att.com>]

>
> I agree that if LMP or any link layer fault detection technology
> (such as using SONET/SDH overhead to determine DCC down) can detect
> control channel failure, we don't need to use RSVP Hello.
>
> Note, In a node failure case, a node may lose all of
> its RSVP states. To cover this case, we recommend
> using the Srefresh procedure upon restoration of
> control channel. This will synchronize states on
> both sides.
>

Just thinking. If RSVP-PHOP uses node id instead of control channel
interface address, then control channel failure won't affect control
message forwarding. But node failure is still a problem.

-- Guangzhi