Configuring The Function Of Dropping Unknown Multicast Data - 3Com S7906E Configuration Manual

To do...
Enter Ethernet port/OLT port
view or port group view
Enable multicast source port
filtering

Configuring the Function of Dropping Unknown Multicast Data

Unknown multicast data refers to multicast data for which no entries exist in the IGMP Snooping
forwarding table. When receiving such multicast traffic, the switch floods it in the VLAN, incurring
network bandwidth waste and low forwarding efficiency.
Configuring globally the function of dropping multicast packets
Follow these steps to configure globally the function of dropping multicast packets:
To do...
Enter system view
Enter IGMP snooping view
Enable the function of dropping
multicast packets
Configuring the function of dropping unknown multicast data packets in a VLAN
Follow these steps to configure the function of dropping unknown multicast data packets in a VLAN:
To do...
Enter system view
Enter VLAN view
Enable the function of dropping
unknown multicast data
packets
Use the command...
interface interface-type
interface-number
port-group manual
port-group-name
igmp-snooping source-deny
Use the command...
system-view
igmp-snooping
drop-unknown
Use the command...
system-view
vlan vlan-id
igmp-snooping
drop-unknown
1-20
Remarks
Required
Use either approach
Required
Disabled by default
Remarks
—
—
Required
Disabled by default
Remarks
—
—
Required
Disabled by default