Problems with multicast streams causing cc errors

[CliveAllen]

Not sure if anyone can help, but I will try my best to explain here:

Multicast stream is having an intermittent problem where cc errors are produced on an envivio system so the stream stops then displays a coloured strip on the screen then plays again. The part I need to ask about is the Multicast configs that I see between 2 VLANs on a C2960X and a C6880X. It appears that the VLAN on the port connected to the nextologies box is 50 and the VLAN on the envivio is 52.

50 IRD-Primary active

52 NEW-MCAST active Gi1/0/6, Gi1/0/10, Gi1/0/24, Gi1/0/27, Gi1/0/29, Gi1/0/33, Gi1/0/35, Gi1/0/37, Gi1/0/43

nextologies -> C2960X -> C6880-X -> Envivio

The issue I have is that when I look at VLAN 50 there are no ports associated with the VLAN but I cannot make out how the two VLANs are getting routed between each other.

Please let me know the commands to run to get you your required output?

Thanks

[Georg Pauwen · Accepted solution]

Hello,

hard to say what is going on. If possible, post the full running configurations (sh run) of both switches, and indicate which ports are connected to what (by putting a description on the port)...

[CliveAllen]

Hi Georg,

Many thanks for the response.

It seems the config is the same as for all other VLANs and the snooping groups. I have utilised the following commands to get information:

show ip igmp snooping groups - queries - all of them really.

Is there a way, other than debug, that I can see if there are problems occurring with this multicast flow across the two VLANS (See the multicast traffic flow) please?

[CliveAllen]

All good. I knew the issue was not network related anyway. I have now proved this.