- Bronze, 100 points or more
I am having a problem with certain multicast applications and I need some input. THe problem is that I have a certain set of multicast lines that come into my server farm via an outside provider, and the server that is receiving the data reports random disconnects on a single line (not any particular line, just one at time) for right around 2 minutes.
Last week I made the following post:
Where I indicated that it appeared that the data was arriving at my switch uninterrupted, and none of the IGMP debugs, or mroute timers indicated the data had actually stopped.
I was still seeing the problem though, so I took it a step further. First,I sniffed the traffic incoming from my provider to verify that they were sending the data when the server reported an outage. That checked out fine, and in fact, data *was* being sent on the group in question during the alleged outage.
Next, I moved my sniffer over to the servers switchport, and monitored traffic being transmitted out that port to the server. Oddly enough, the switch was not sending data to the server during the outage.
So the switch is receiving the data, but it's randomly deciding to not forward it back out to the server.
As part of the debugging, I disabled the dual-homed NIC and put the server directly onto the 4507R that is multicast routing enabled.
I've been debugging IGMP and sniffing IGMP on that switchport (both directions) and I don't see anything odd.
Does anyone have any ideas what I can look at next?
I have two 4507R's, both with 12.2(20)EWA3.
Thanks in advance,