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Forum Discussion
M4300 IGMP Snooping and Report Flood Mode
In an AV network with multicast streams, I have an M4300 switch which has IGMP snooping enabled. Multiple hosts connected to that switch joined the multicast group 239.1.1.1 and sent their initial un...
Is this flood probably related to an STP routing change and the following election process? Typically it is STP TCN! Sure, the Flood mode -must- be retained active to stay within the RFC/standardisation since it's required, this is why it's on by default.
On Cisco swiches, you would issue an ...
no ip igmp snooping tcn flood
...on all switch uplink ports.
LaurentMa explined this and more in-depth here for the Netgear Managed switches.
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