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Page 88 | AlliedWare™ OS How To Note: IGMP
Stopping snoopers from snooping non-IGMP messages > Example
The router uses OSPF.
With the above configuration, the router sends OSPF messages to switch 2. As the following
outputs show, this means that:
z switch 2 designates port 24 an All Groups port
z switch 2 forwards the OSPF packets to uplink port 25 on switch 3, so switch 3 designates
port 25 an All Groups port
z switch 3 forwards the OSPF packets to uplink port 49 on switch 1, so switch
1
designates
port 49 an All Groups port
X Configure the router
set system name=Router
# VLAN general configuration
create vlan=vlan100 vid=100
add vlan=100 port=1-4
# IP configuration
enable ip
set ip autonomous=65000
add ip int=vlan100 ip=172.31.0.1 mask=255.255.255.0
add ip int=eth0 ip=10.0.0.1
# OSPF configuration
set ospf routerid=172.31.0.1
add ospf area=0.0.0.1
add ospf range=172.31.0.0 area=0.0.0.1 mask=255.255.255.0
add ospf interface=vlan100 area=0.0.0.1
enable ospf
Manager Switch 2> show igmpsnooping
IGMP Snooping
------------------------------------------------------------------------
Status ........................... Enabled
Disabled All-groups ports ........ None
Vlan Name (vlan id) ..... default (1)
Fast Leave .............. Off
Group List ..............
No group memberships.
Vlan Name (vlan id) ..... vlan100 (100)
Fast Leave .............. Off
Group List ..............
All Groups Entry timeout 256 secs
Ports 24-25
------------------------------------------------------------------------