Take the 2-minute tour ×  I am looking for a good simple tool
that runs on a standard OS (Windows or Linux) that I can used to
test that multicast is being passed properly by a router.  I
have been asked by a client to enable multicast routing on a
Linux box acting as their router since their phone system
requires multicast to for a few features. Since I am not
physically near the client I don't really have the ability to
experiment with the various methods for setting up multicast
routing on Linux. I can setup a router at my desk that is
identical to what is deployed on their network, but I don't know
of any good simple tools that I can use to generate or listen
for multicast traffic.  The one mulicast tool I have found is
mcast.exe tool which is part of the Windows 2000/2003 resource
kit. From what I have read online it seems that mcast.exe does
not work across a router, and only works on the local network,
so that doesn't seem to be useful for me to test multicast
routing.  So what do tool(s) do you use to