Enabling dropping unknown multicast data
This feature enables the switch to drop all unknown multicast data. Unknown multicast data refers to multicast data for which no forwarding entries exist in the IGMP snooping forwarding table.
If you do not enable this feature, unknown multicast data is flooded in the VLAN to which the data belongs.
To enable dropping unknown multicast data for a VLAN:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter VLAN view. | vlan vlan-id | N/A |
3. Enable dropping unknown multicast data for the VLAN. | igmp-snooping drop-unknown | By default, dropping unknown multicast data is disabled. Unknown multicast data is flooded. |