Configuring an IGMP Snooping Policy 567
If this feature is disabled on a port, the port can be connected with both multicast
sources and multicast receivers.
Configuring multicast source port filtering globally
Follow these steps to configure multicast source port filtering globally:
Configuring multicast source port filtering on a port or a group of ports
Follow these steps to configure multicast source port filtering on a port or a group
of ports:
n
When enabled to filter IPv4 multicast data based on the source ports, the device is
automatically enabled to filter IPv6 multicast data based on the source ports.
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 the switch receives such multicast traffic:
■ With the function of dropping unknown multicast data enabled, the switch
drops all the unknown multicast data received.
■ With the function of dropping unknown multicast data disabled, the switch
floods unknown multicast data in the VLAN which the unknown multicast data
belongs to.
Follow these steps to configure the function of dropping unknown multicast data
in a VLAN:
n
When enabled to drop unknown IPv4 multicast data, the device is automatically
enabled to drop unknown IPv6 multicast data.
To do… Use the command… Remarks
Enter system view system-view -
Enter IGMP Snooping view igmp-snooping -
Enable multicast source port
filtering
source-deny port
interface-list
Required
Disabled by default
To do… Use the command… Remarks
Enter system view system-view -
Enter the
corresponding
view
Enter Ethernet
port view
interface interface-type
interface-number
Use either command
Enter port group
view
port-group { manual
port-group-name |
aggregation agg-id }
Enable multicast source port filtering igmp-snooping
source-deny
Required
Disabled by default
To do… Use the command… Remarks
Enter system view system-view -
Enter VLAN view vlan vlan-id -
Enable the function of
dropping unknown multicast
data
igmp-snooping
drop-unknown
Required
Disabled by default
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