The MPLS-OPS Archive

["Peter J. Welcher" <p.welcher@att.net>]

Hi, Ray. I may be missing what you're trying to do, but
I suspect from the CE-CE you're trying to load balance 
for MPLS VPN's. 

If you're doing MPLS VPN, BGP / MBGP is only used for the
next hop (exit from the SP cloud) determination. If the next
hop is a loopback on the PE router, the IGP is used for path
to that loopback. The IGP should load balance equal cost routes,
and MPLS label paths will also do this. 

HTH


Raymond Cheung wrote:
> 
> Hello,
> 
> Has anyone tried BGP load balancing in a MPLS network with route reflectors?
> I have no problem to get the load balancing working without route
> reflectors. But since route reflector can only advertise one best path for a
> prefix, so I have to use different RD to make vpnv4 addresses look different
> on route reflectors. The problem is, after using different RD (still same
> route-targets), CE-CE reachability is broken.
> Please let me know if you have done this..
> Much appreciated.
> 
> best regards,
> 
> Raymond Cheung
> Senior Network Engineer (CCIE R&S)
> Schlumberger Network Solutions
> Tel: 713-513-3285
> Tel: 713-513-3000
> 
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