Enabling Dropping Unknown Multicast Data; Setting The Maximum Number Of Multicast Groups On A Port - HP 5920 series Configuration Manual

Configuring multicast source port filtering globally
Step
4. Enter system view.
5. Enter IGMP-snooping view.
Enable multicast source port
6.
filtering.
Configuring multicast source port filtering on a port
Step
1. Enter system view.
2. Enter Ethernet interface view.
3. Enable multicast source port
filtering.

Enabling dropping unknown multicast data

Unknown multicast data refers to multicast data for which no forwarding entries exist in the IGMP
snooping forwarding table. When the switch receives such multicast data on a router port, one of the
following occurs:
When the function of dropping unknown multicast data is disabled, the switch floods unknown
•
multicast data in the VLAN that the data belongs to, causing network bandwidth waste and low
forwarding efficiency.
When the function of dropping unknown multicast data is enabled, the switch forwards unknown
•
multicast data to other router ports instead of flooding it in the VLAN. If no other router ports exist,
the switch drops the unknown multicast data.
To enable dropping unknown multicast data for a VLAN:
Step
1. Enter system view.
2. Enter VLAN view.
3. Enable dropping unknown
multicast data for the VLAN.

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.
When you set the maximum number of multicast groups on a port, follow these guidelines:
This configuration is effective for the multicast groups that a port dynamically joins. If you configure
•
the port as a static member port for a multicast group, this configuration is not effective for the
multicast group.
Command
system-view
igmp-snooping
source-deny port interface-list
Command
system-view
interface interface-type
interface-number
igmp-snooping source-deny
Command
system-view
vlan vlan-id
igmp-snooping drop-unknown
23
Remarks
N/A
N/A
By default, multicast source port
filtering is disabled.
Remarks
N/A
N/A
By default, the IPv6 multicast
source port filtering is disabled.
Remarks
N/A
N/A
By default, this function is disabled.
Unknown multicast data is flooded.