3Com Switch 7750 Configuration Guide

438 CHAPTER 43: IGMP SNOOPING CONFIGURATION
IGMP Snooping
Configuration
Example
Configure IGMP
Snooping on a switch
Network requirements
Connect the router port on the switch to the router, and other non-router ports
which belong to VLAN 10 to user PCs. Enable IGMP Snooping on the switch.
Network diagram
Figure 108 Network diagram for IGMP Snooping configuration
Configuration procedure
# Enable IGMP Snooping in system view.
<SW7750> system-view
[SW7750] igmp-snooping enable
# Enable IGMP Snooping on VLAN 10.
[SW7750] vlan 10
[SW7750-vlan10] igmp-snooping enable
Table 350 Display information about IGMP Snooping
Operation Command Description
Display the current IGMP
Snooping configuration
display igmp-snooping
configuration
You can execute the display
commands in any view.
Display IGMP Snooping
message statistics
display igmp-snooping
statistics
Display IP and MAC multicast
groups in one or all VLANs
display igmp-snooping
group [ vlan vlanid ]
Display the configuration of
the multicast VLAN
display multicast-vlan
[ vlan-id ]
Clear IGMP Snooping
statistics
reset igmp-snooping
statistics
You can execute the reset
command in user view.
Source
Multicast packet transmission
when IGMP Snooping runs
Multicast router
Host A Host C
Receiver
Layer 2 switch
Multicast packets
Host B
Receiver