Attempting to play a multicast stream from Windows VLC Player, was seeing the IGMP Snooping picking up something from my machine, but not the join to the specific group (channel/stream) I was trying to view.
I was attempting to get to a stream: udp://@239.4.6.0:1234
Slot-1 switch1.26 # show igmp group | include 1:32
239.255.255.250 2 vlan1 1:32 64
224.0.0.251 2 vlan1 1:32 60
224.0.0.252 2 vlan1 1:32 66Resolution
To resolve the problem, it turned out to be VirtualBox, as described in: https://superuser.com/questions/889007/vlc-udp-network-stream-does-not-work-in-windows-but-does-in-linux
Essentially just either disabling the VirtualBox Interface or setting a specific metric as shown below resolved the issue, so changing from “Automatic” to 5.
