Enabling Dropping Unknown Multicast Data - HP 6125G Configuration Manual

Configuring multicast source port filtering on a port
Step
1. Enter system view.
2. Enter Layer 2 Ethernet
interface view.
3. Enable multicast source port
filtering.

Enabling 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, 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 unknown multicast 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 its router ports instead of flooding it in the VLAN. If no router ports exist, the switch
drops the unknown multicast data.
Configuration guidelines
The configuration in IGMP snooping view and the configuration in VLAN view are mutually exclusive.
Namely, after this function is enabled in IGMP snooping view, it cannot be enabled or disabled in VLAN
view, and vice versa.
Configuration procedure
To enable dropping unknown multicast data globally:
Step
1. Enter system view.
2. Enter IGMP-snooping view.
3. Enable dropping unknown
multicast data.
To enable dropping unknown multicast data in a VLAN:
Step
1. Enter system view.
2. Enter VLAN view.
3. Enable dropping unknown
multicast data.
Command
system-view
interface interface-type
interface-number
igmp-snooping source-deny
Command
system-view
igmp-snooping
drop-unknown
Command
system-view
vlan vlan-id
igmp-snooping drop-unknown
28
Remarks
N/A
Use either command.
Disabled by default.
Remarks
N/A
N/A
Disabled by default
Remarks
N/A
N/A
Disabled by default