3Com SuperStack 4 Configuration Manual page 163

Displaying and
Debugging IGMP
Snooping
Configuration Example
— Enable IGMP
Snooping
Configuring Aging Time of Multicast Group Member
Use the commands in
group member port. If the switch receives no multicast group report message
during the member port aging time, it will transmit the specific query message to
that port and start a maximum response timer.
Perform the following configuration in system view.
Table 181 Configuring aging time of the multicast member
Operation
Configure aging time of the
multicast member
Restore the default setting
By default, the aging time of the multicast member is 260 seconds.
Execute command in any view to display the running of the IGMP
display
Snooping configuration, and to verify the effect of the configuration. Execute
command in user view to reset the IGMP Snooping statistic information.
reset
Execute command in user view to debug IGMP Snooping
debugging
configuration.
Table 182 Displaying and debugging IGMP Snooping
Operation
Display the information about
current IGMP Snooping
configuration
Display IGMP Snooping statistics
of received and sent messages
Display IP/MAC multicast group
information in the VLAN
Reset the IGMP Snooping
statistic information
Networking Requirements
To implement IGMP Snooping on the switch, first enable it. The switch is
connected to the router via the router port, and with user PCs through the
non-router ports on vlan 10.
Table 181 to manually set the aging time of the multicast
Command
igmp-snooping host-aging-time
undo igmp-snooping host-aging-time
Command
display igmp-snooping configuration
display igmp-snooping statistics
display igmp-snooping group [ vlan
reset igmp-snooping statistics
IGMP Snooping 175
seconds
vlanid
]