I have my lab in a few days and was running through some
scenarios. If I have an inter-AS MPLS-VPN running and working, then
add on inter-as multicast, not mcast vpn, the vrf to vrf ping
breaks. I'm advertising the RP loopbacks in to the ipv4 multicast
family and the relationships work inside the SP environment except
the customer connections break.
It would greatly help if you could post some configurations.
The most important thing is - are you sure that you are tag-switching
traffic between PE loopbacks and that next-hop information is not
changed between two networks? Loopback interfaces are in IPv4 unicast
table, as well?
