Juniper Networks EX2500 User Manual

EX2500 Ethernet Switch Configuration Guide

Static Multicast Router

Enable IGMPv3 Snooping (optional).

ex2500(config)# ip igmp snoop igmpv3 enable

View dynamic IGMP information.

ex2500# show ip igmp groups

Note: Local groups (224.0.0.x) are not snooped/relayed and will not appear.
     Source         Group       VLAN   Port   Version   Mode  Expires  Fwd
-------------- --------------- ------- ------ --------  ----- -------  ---
10.1.1.1      232.1.1.1        2      4      V3       INC    4:16   Yes
10.1.1.5      232.1.1.1        2      4      V3       INC    4:16   Yes
    *           232.1.1.1        2      4      V3       INC     -      No
10.10.10.43    235.0.0.1        9      1      V3       INC    2:26   Yes
    *           236.0.0.1        9      1      V3       EXC     -     Yes

# show ip igmp mrouter

VLAN Port Version Expires Max Query Resp. Time QRV QQIC
------ ------- -------- -------- -------------------- --- ----

1 4 V2 static - - -
2 3 V3 4:09 128 2 125

These commands display information about IGMP Groups and Mrouters
learned by the switch.

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. Any data port can accept a static Mrouter.

When you configure a static Mrouter on a VLAN, it replaces any dynamic Mrouters
learned through IGMP Snooping.

Use the following procedure to configure a static multicast router (Mrouter):

For each Mrouter, configure a port or trunk group (1 through 24 or

po1

through

po24

), VLAN (1 through 4094), and version (1 through 3).

ex2500(config)# ip igmp mrouter 5 1 2

The IGMP version is set for each VLAN, and cannot be configured separately for
each Mrouter.

Verify the configuration.

ex2500(config)# show ip igmp mrouter