Igmp Snooping Configuration Examples; Configuring Igmp Snooping - 3Com 4210 9-Port Configuration Manual

You can execute the reset command in user view to clear the statistics information about IGMP
Snooping.
Table 2-20 Display and maintain IGMP Snooping
Operation
Display the current IGMP
Snooping configuration
Display IGMP Snooping
message statistics
Display the information about
IP and MAC multicast groups in
one or all VLANs
Clear IGMP Snooping statistics

IGMP Snooping Configuration Examples

Configuring IGMP Snooping

Network requirements
To prevent multicast traffic from being flooded at Layer 2, enable IGMP snooping on Layer 2 switches.
As shown in
and to Switch A through Ethernet1/0/1.
Run PIM-DM and IGMP on Router A. Run IGMP snooping on Switch A. Router A acts as the IGMP
querier.
The multicast source sends multicast data to the multicast group 224.1.1.1. Host A and Host B are
receivers of the multicast group 224.1.1.1.
Network diagram
Figure 2-3 Network diagram for IGMP Snooping configuration
Source
Eth1/0/2
1.1.1.2/24
1.1.1.1/24
IGMP querier
Multicast packets
display igmp-snooping
configuration
display igmp-snooping
statistics
display igmp-snooping
group [ vlan vlanid ]
reset igmp-snooping
statistics
Figure 2-3, Router A connects to a multicast source (Source) through Ethernet1/0/2,
VLAN100
Eth1/0/1
10.1.1.1/24 Eth1/0/1
Router A Switch A
Command
Receiver
Host A
Receiver
Eth1/0/4
Eth1/0/3
Host B
Eth1/0/2
Host C
2-16
Remarks
You can execute the display
commands in any view.
You can execute the reset
command in user view.