[c-nsp] MPLS L3 VPN over TE - Load Balancing per Customer

[Oliver Boehmer (oboehmer)]

alaerte.vidali at nsn.com <> wrote on Tuesday, April 15, 2008 10:18 PM:

>  Hi,
> 
> Considering the topology where MPLS VPN over TE is used:
> (2 links between PE1--PE2)
> 
> CustA------PE1========PE2----CustA
>             |          |
> CustB_______|          |_____CustB
> 
> 
> What are the possibilities of loading balance traffic in the way CustA
> traffic goes through link 1 and CustB traffic goes through link 2?
> (considering BGP next hop is the same for CustA and CustB)

Why are you using TE in this setup?

The TE tunnel will only use one of the two links. If you really want to
achieve what you describe, you need two tunnels and use bgp next-hop
manipulation to steer the traffic over the respective tunnel. But you
could also use two tunnels and use CEF load-sharing for a single bgp
next-hop. TE also allows to do unequal-cost loadsharing, but you are
probably aware of this already.

	oli

P.S: This is the third time L3VPN over TE has come up in the past few
weeks. Is this a trend? ;-)