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Enabling multicast source port filtering in interface view
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Layer 2 Ethernet
interface view.
interface
interface-type
interface-number
N/A
3.
Enable multicast source port
filtering.
igmp-snooping source-deny
By default, multicast source port
filtering is disabled.
Enabling dropping unknown multicast data
Unknown multicast data refers to multicast data for which no forwarding entries exist in the IGMP
snooping forwarding table. This feature enables the device only to forward unknown multicast data to
the router port. If the device does not have a router port, unknown multicast data will be dropped.
If you do not enable this feature, the unknown multicast data is flooded in the VLAN to which the data
belongs.
To enable dropping unknown multicast data in a VLAN or VSI:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter VLAN view or VSI
view.
•
Enter
VLAN
view:
vlan vlan-id
•
Enter
VSI
view:
vsi
vsi-name
N/A
3.
Enable dropping unknown
multicast data for the VLAN
or VSI.
igmp-snooping drop-unknown
By default, dropping unknown
multicast data is disabled, and
unknown multicast data is
flooded.
Enabling IGMP report suppression
This feature enables the device to forward only the first IGMP report for a multicast group to its
directly connected Layer 3 device. Other reports for the same group in the same query interval are
discarded. Use this feature to reduce multicast traffic.
To enable IGMP report suppression:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter IGMP-snooping view.
igmp-snooping
N/A
3.
Enable
IGMP
report
suppression.
report-aggregation
By
default,
IGMP
report
suppression is enabled.
Setting the maximum number of multicast groups on a port
You can set the maximum number of multicast groups on a port to regulate the port traffic.