[c-nsp] Recovery time under interface failure - VPLS - MPLS L3 VPN- Plenty L3

[Oliver Boehmer (oboehmer)]

alaerte.vidali at nsn.com <> wrote on Saturday, June 28, 2008 5:21 PM:

>  Hi,
> 
> Considering following simple topology:
> 
> Laptop-----(e1)R1-----R2----R3----Server
> 
> ...and that OSPF timers are the same and BFD is not used (no failure
> recovery optimization used) on all scenarios:
> 
> What would be the recovery time when interface etherne 1 (from laptop
> to R1) fails in these cases:
> 
> -Just IP routing between R1 and R3
> -VPLS between R1 and R3
> -MPLS VPN between R1 and R3
> 
> If I am not wrong, in VPLS case R1 will remove MAC address and
> communicate that to R3, but not sure if it will impact final
> connectivity recovery time between laptop--server.
> (sorry, no lab to test right now)

Hmm, where should above topology recover to? There is no alternate path
between client and server here? In general, convergence times depend on
several variables.. sub-10-sec is a ballpark figure you can use, but it
can also take longer (when BGP is involved) or quicker..

	oli