Iam running an enterprise network on which Iam trying to enable multicast routing. My IGP is OSPF.
I have e1 links from central noc to tier 1 locations and to tier 2 locations. Multicasting is fine upto this location
Multicasting is not getting through to Tier 3 lcocation which is connected to Tier 2 . The device involved is cisco 878 . Iam configuring the controller on these devices for atm mode and iam running ospf on the atm interface and vlan interface availbe on these device.
PIM neighbourship was not coming up across ATM interface. I created a gre tunnel to bring up the pim by enabling ip pim sparse mode neighborship . Now the pim neigborship is up via tunnel interface. But multicasting is not happening through this interface.
iam doubting this is because on the remote end device if i try to display sh ip route iam seeing the gateway interface as atm0 for the whole network prefix range and not tunnel interface.
The application iam using is video streaming from a linux server (vlc) from central noc.
Any help is appreciated.