I'm beating my head on the desk over this. Never tried to do it over L2L VPN, but have done it successfully over MPLS VPN's.
What I am trying to do is create a GRE tunnel between a remote site, and the corporate network to allow multicast traffic to traverse. Currently, this office is connecting to the network via a L2L tunnel terminating at an ASA. The GRE tunnel interfaces are located on the remote router and the core router at the primary datacenter. The toplogy looks like this...
Remote Router -------> ASA -------> Core -----> Broadcast Device
The tunnel interfaces show up/up, and I can see traffic passing through. Mroutes are in place and both are part of 239.0.1.2 and 239.1.1.2. On the core, I can see all the other Mcast networks with routes, on the remote, it only shows itself.
I've tried a few different configurations for the tunnel interface. I've bound the source to a Loopback address on the remote and core sides, the sub-interface on the remote, the SVI on the core, the outside interface of the remote... Nothing seems to be working. When I ping the MCast broadcast IP, there are no routes.
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Remote Configuration:
interface Loopback0
ip address 192.168.10.254 255.255.255.255
ip pim sparse-mode
no ip mfib cef input
no ip mfib cef output
ip igmp join-group 239.1.1.2
ip igmp join-group 239.0.1.2
interface Tunnel2
ip unnumbered Loopback0
ip pim dr-priority 0
ip pim sparse-mode
tunnel source Loopback0
tunnel destination 192.168.254.254
ip pim rp-address 192.168.2.1
ip mroute 192.168.2.0 255.255.255.0 Tunnel2
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Core Configuration
interface Loopback1
ip address 192.168.254.254 255.255.255.255
interface Tunnel9
ip unnumbered Loopback1
ip pim dr-priority 255
ip pim sparse-mode
tunnel source Loopback1
tunnel destination 192.168.10.254
ip mroute 192.168.8.128 255.255.255.128 Tunnel2 (192.168.8.128 is the subnet at the remote site where Mcast traffic will be distributed)
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Any ideas?
