[c-nsp] EoMPLS and VPLS Load Balancing

[Oliver Boehmer (oboehmer)]

alaerte.vidali at nsn.com <> wrote on Saturday, January 19, 2008 12:14 AM:

>  Hi,
> 
> Considering the scenario, do you see a way to load balancing Layer 2
> VPN over MPLS (VPWS or old AtoM and VPLS?
> (that is, one xconnect takes PE1-P1-PE2 and other takes PE1-P2-PE2)
> 
> CE-----PE1-----P1-----PE2----CE2
>         |       |      |
>         |______P2______|
> 

PE1/PE2 will use a CEF hash based on the bottom label (VC label), which
might or might not hash to different PE-P links. To do this in a
predicatable way, configure two MPLS-TE tunnels (one via P1, one via P2)
and use AToM tunnel selection ("preferred-path interface tunnel <num>"
within the pseudowire-class).

	oli