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Static multicast router
A static multicast router (Mrouter) can be configured for a particular port on a particular VLAN. A static
Mrouter does not have to be learned through IGMP Snooping.
You can configure static Mrouters on any switch port except the management port 17. The switch
supports up to total of sixteen static Mrouters.
When you configure a static Mrouter on a VLAN, it replaces any dynamic Mrouters learned through
IGMP Snooping.
IGMP Snooping configuration example
This section provides steps to configure IGMP Snooping on the switch, using the Command Line Interface
(CLI) or the Browser-based Interface (BBI).
Configuring IGMP Snooping (CLI example)
1. Configure port and VLAN membership on the switch, as described in the “Configuring ports and
VLANs (CLI example)” section in the “VLANs” chapter.
2. Add VLANs to IGMP Snooping and enable the feature.
>> /cfg/l3/igmp/on (Globally turn IGMP on)
>> IGMP# snoop (Select IGMP Snooping menu)
>> IGMP Snoop# add 1 (Add VLAN 1 to IGMP Snooping)
>> IGMP Snoop# apply (Make your changes active)
3. Enable IGMPv3 Snooping (optional).
>> IGMP Snoop# igmpv3 (Select IGMPv3 menu)
>> IGMP V3 Snoop# ena (Enable IGMPv3 Snooping)
4. Apply and save the configuration.
>> IGMP V3 Snoop# apply (Apply the configuration)
>> IGMP V3 Snoop# save (Save your changes)
5. View dynamic IGMP information.
>> /info/l3/igmp (Select IGMP Information menu)
>> IGMP Multicast# dump (Show IGMP Group information)
Note: Local groups (224.0.0.x) are not snooped and will not appear.
Source Group VLAN Port Version Mode Expires Fwd
--------------- --------------- ------ ------- -------- ---- ---------- ---
224.10.2.0 232.1.0.0 2 18 V3 INC 4:17 Yes
228.12.1.0 232.1.0.4 2 18 V3 INC 4:18 Yes
* 235.2.0.1 3 21 V3 INC - No
* 236.1.0.2 3 21 V3 EXC - Yes
>> /info/l3/igmp/mrouter (Access Mrouter information menu)
>> Mrouter# dump (Show IGMP Group information)
VLAN Port Version Expires Max Query Resp. Time QRV QQIC
------ ------- -------- -------- -------------------- --- ----
1 21 V2 static unknown - -
2 20 V3 4:09 128 2 125
These commands display information about IGMP Groups and Mrouters learned through IGMP Snooping.