I am connecting TRIAX STB A235-N1x-hd setup box with X440 switch and also the receiver to do L2 multicasting but it freezes after 4-5 minutes and resumes once I restart the setup box. I tried disconnecting/connecting the cable from switch and restarting the switch but it does'nt work. I have to restart the setup box to resume the freeze. I also tried changing the timers of igmp and igmp snooping but in vain. Please help