When you configure IGMP parameters on interfaces in the scenario where a user network segment is connected to multiple devices, note that:
You must ensure that IGMP parameters configured on the interfaces of the devices on a shared network segment are consistent.
IGMP parameters on interfaces are mutually affected and restricted. If IGMP parameters configured on the interfaces of the devices on a shared network segment are inconsistent, the IGMP member relationships are chaotic.
Checking method: Run the display igmp interface interface-type interface-number verbose command on all the devices on the shared network segment to check IGMP parameters. If the IGMP parameter configurations are inconsistent, modify the configurations. The following list IGMP parameters:
IGMP version Robustness Query interval Other querier timeout Maximum query response time Last member query count Last member query interval Startup query interval Startup query count
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