[KLUG Members] multicast forwarding

[John Pesce]

Hi all,

Another problem. We are developing an in house VoIP peer-to-peer program 
that uses UDP multicast. It works nicely on our LAN.
We started testing it between LANs using multicast routers.
Linux reports that the computer is joining the group, the routers show 
that the host on the port joined a group so it joins the group. but the 
traffic doesn't seem to flow, at least not as expected. We played with it 
for over an hour last week with no packets getting through and then 
suddently they did and everything worked with no explaination.
Yesturday we tried again and again there was nothing. Any suggestions?

Second matter. In the future, for a specific experiment, we need for 
the program to work on two LANs in different states connected by a 
private frame relay, but with no multicast routers or VPN to connect them.
Is there a way to tunnel the multicast packets across the frame relay 
without anything knowing any different?

Thanks,
John