Extensions to LDP Signaling for PBB-VPLS -

["David Allan" <dallan at nortel.com>]

Hi Florin:

I understand the problem this proposes to solve, but I believe there is
a simpler way. If you assign a B-MAC to a multihomed customer site then
you never need to invalidate C-MAC to B-MAC bindings and a MAC
invalidate message for the B-MAC is sufficient to ensure no black holing
when an AC goes down, normal flooding and learning permitting remote PEs
to learn which PE the customer site is reachable via. This provides for
the possibility of localizing the blocked/unblocked decision for the ACs
(which IMO needs to be coordinated between the MH PEs in order to be
robustly loop free) as knowledge of the multi-homing does not need to be
propagated into the network.

WDYT?
Dave