I have several Win2K3 video servers that stream both unicast and multicast from
encoders 24x7. The servers and encoders are dispersed across various sites and
all servers pull from a central distribution video server (RTSPT unicast). In
theory (and practice) this seems to work fine. However, one of these sites
occasionally reaches network bandwidth saturation to the distribution server and
this is causing havoc with the multicast publishing points. Looking at the
video servers, the multicast publishing points claim they are running and
sourcing from the distribution server but if I sniff the network (Ethereal)
there are no multicast packets being generated. Restarting the publishing point
clears up the problem.
So is this a bug? It seems to be since by all accounts the multicast publishing
point looks to be up and running when it isn't. I should also mention that the
multicast publishing points are using a server-side playlist with stream
failover (one RTSPT source and one WMV file source in an indefinite loop.) When
there is no multicast being generated, the playlist still shows a green arrow
next to the RTSPT source.