Multicast In Inter-AS MPLS VPN's

Dear All,
I am having troubles configuring Multicast MPLS-VPN in Inter-AS scenarios.

What happens is that the Site-to-Site VPN's work fine and I can see the
traffic going across the MPLS core and reaching end to end.
But when we have another AS, and when we run pim on ASBR's traffic somehow
starts to flow towards towards the other ASBR instead of going between the two
sites in one AS.
The moment we shut down the interlink ASBR-ASBR , it works fine in one AS, but
the moment both the ASBR's see each other as PIM neighbors, the traffic starts
to flow on the interlink.
Can any one suggest what exactly needs to be checked here.
I made assure that the RPF failure is not happning and also the RP information
of both the AS's are not leaking between the two AS.
I can share the the topology with you as well.

thanks

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Received on Thu Dec 16 2010 - 06:12:55 ART