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Catalyst 3750-X and 3560-X Switch Command Reference
OL-29704-01
Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
show ip igmp snooping
This is an example of output from the show ip igmp snooping command. It displays snooping
characteristics for all VLANs on the switch.
Switch> show ip igmp snooping
Global IGMP Snooping configuration:
-----------------------------------
IGMP snooping : Enabled
IGMPv3 snooping (minimal) : Enabled
Report suppression : Enabled
TCN solicit query : Disabled
TCN flood query count : 2
Last member query interval : 100
Vlan 1:
--------
IGMP snooping :Enabled
Immediate leave :Disabled
Multicast router learning mode :pim-dvmrp
Source only learning age timer :10
CGMP interoperability mode :IGMP_ONLY
Last member query interval : 100
Vlan 2:
--------
IGMP snooping :Enabled
Immediate leave :Disabled
Multicast router learning mode :pim-dvmrp
Source only learning age timer :10
CGMP interoperability mode :IGMP_ONLY
Last member query interval : 333
<output truncated>
Related Commands Command Description
ip igmp snooping Enables IGMP snooping on the switch or on a VLAN.
ip igmp snooping
last-member-query-interval
Enables the IGMP snooping configurable-leave timer.
ip igmp snooping querier Enables the IGMP querier function in Layer 2 networks.
ip igmp snooping
report-suppression
Enables IGMP report suppression.
ip igmp snooping tcn Configures the IGMP topology change notification behavior.
ip igmp snooping tcn flood Specifies multicast flooding as the IGMP spanning-tree
topology change notification behavior.
ip igmp snooping vlan
immediate-leave
Enables IGMP snooping immediate-leave processing on a
VLAN.
ip igmp snooping vlan mrouter Adds a multicast router port or configures the multicast learning
method.
ip igmp snooping vlan static Statically adds a Layer 2 port as a member of a multicast group.
show ip igmp snooping groups Displays the IGMP snooping multicast table for the switch.
show ip igmp snooping mrouter Displays IGMP snooping multicast router ports for the switch or
for the specified multicast VLAN.
show ip igmp snooping querier Displays the configuration and operation information for the
IGMP querier configured on a switch.