[c-nsp] Loop Prevention in VPLS

[Nick Hilliard]

Lukas Tribus wrote:
> Don't use VPLS, but L3VPN's. Like Ivan says: "VPLS is not aspirin" [1].

yeah, seriously.  L2 loops in VPLS networks are an endemic problem
because you normally end up bridging multiple separate layer 2 domains
together which run different bridging protocols.  This is a recipe for
disaster and it is totally unsurprising to hear that the OP is running
into this sort of problem.

As a general rule, anything which starts off with a design requirement
for VPLS probably almost certainly needs ground-up rethinking.

Nick,
still nursing the burn scars