02-19-2021 10:10 PM
I really have a very simple setup; shown below.
Have 2 devices in the same subnet and BD. They can pass Unicast and Broadcast traffic between each other, but not multicast traffic (224.0.150.1). I tried with both IGMP snooping ON/OFF.
The same devices connected to a pair of 3650 switches work fine with close to default configuration. Can anyone suggest what I might be doing wrong?
Solved! Go to Solution.
02-21-2021 10:35 PM
Thanks. Those outputs were blank. Those outputs populated once I turned on "ip pim sparse-mode", but the traffic didn't work end-to-end.
The only thing that worked was disabling IGMP snooping on both routers for this specific BD.
02-20-2021 02:00 AM
high level i do not see multicast routing enabled?
Ip multicast-routing, along with configuring IGMP also
post the below output :
show ip igmp snooping group
show ip igmp snooping group bd
show ip igmp snooping group bd 150 count
02-20-2021 08:54 PM
Thank you. I wasn’t aware multicast routing was needed to allow layer 2 multicast, also. I will enable it tomorrow and post the outputs of the above commands before and after.
02-21-2021 10:35 PM
Thanks. Those outputs were blank. Those outputs populated once I turned on "ip pim sparse-mode", but the traffic didn't work end-to-end.
The only thing that worked was disabling IGMP snooping on both routers for this specific BD.
02-22-2021 02:41 AM
Glad all well and working.
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