Allied Telesis AR400 - Manual (Page 10)

Page 10 | AlliedWare™ OS How To Note: IGMP
IGMP snooping > Example
Switch 1 is configured with IGMP, which makes it the IGMP Querier in this network. It is best
practice to make the Querier the closest switch to the multicast source, and in this example
switch 1 is closest. For more information about queriers see
"Multiple potential IGMP
queriers" on page 15 .
Switch 2 is an IGMP Snooper. It forwards multicast packets and IGMP messages as required.
IGMP snooping is enabled by default and does not need any configuration.
Switch 3 is also an IGMP Snooper. It forwards multicast packets and IGMP messages as
required. IGMP snooping is enabled by default and does not need any configuration.
X Configure switch 1
set system name="Switch 1"
# VLAN general configuration
create vlan=vlan100 vid=100
add vlan=100 port=1-52
# IP configuration
enable ip
add ip int=vlan100 ip=172.31.0.254 mask=255.255.255.0
enable ip igmp
enable ip igmp int=vlan100
# STP general configuration
enable stp=default
set stp=default mode=rapid
set stp=default port=1 edgeport=yes
X
Configure switch 2
set system name="Switch 2"
# VLAN general configuration
create vlan=vlan100 vid=100
add vlan=100 port=1-26
# STP general configuration
enable stp=default
set stp=default mode=rapid
set stp port=2 edgeport=yes
X Configure switch 3
set system name="Switch 3"
# VLAN general configuration
create vlan=vlan100 vid=100
add vlan=100 port=1-26
# STP general configuration
enable stp=default
set stp=default mode=rapid
set stp port=3 edgeport=yes