ARN Multicast Config questions

[BillKill]

Hi Folks,

New to this forum. Was wondering if any body has any suggestions for this scenario:

Two ARN routers connected via MPLS confgiured with BGP-4,
PPP(Std), DVMRP, & IGMPv2. I also configured a DVMRP tunnel(verified that both interaces were configured with the protocols and routing was working.)Set-up a video server on one end and a client on the other end.

Issue:

The client can join the multicast, but IGMP seems to tear down the connection intermittently(between 30 seconds and 2 minutes). Are there any igmp settings on the routers that need to be changed from their default settings? Or am I looking in the wrong direction?

Any help is greatly appreciated!

Thanks!

BillKill