This command displays IGMP (Internet Group Management Protocol) Snooping information for a given unit/slot/port or VLAN. Configured information is displayed whether IGMP Snooping is enabled.
| Format | show igmpsnooping [unit/slot/port | vlan_id] |
| Mode | Privileged EXEC |
When the optional arguments unit/slot/port or vlan_id are not used, the command displays the following information:
| Admin Mode | Whether IGMP Snooping is active on the switch. |
| Multicast Control Frame Count | The number of multicast control frames that are processed by the CPU. |
| Interface Enabled for IGMP Snooping | The list of interfaces on which IGMP Snooping is enabled. |
| VLANS Enabled for IGMP Snooping | The list of VLANS on which IGMP Snooping is enabled. |
When you specify the unit/slot/port values, the following information appears:
| IGMP Snooping Admin Mode | Whether IGMP Snooping is active on the interface. |
| Fast Leave Mode | Whether IGMP Snooping Fast-leave is active on the interface. |
| Group Membership Interval | The amount of time in seconds that a switch will wait for a report from a particular group on a particular interface before deleting the interface from the entry. This value may be configured. |
| Maximum Response Time | The amount of time the switch waits after it sends a query on an interface because it did not receive a report for a particular group on that interface. This value may be configured. |
| Multicast Router Expiry Time | The amount of time to wait before removing an interface from the list of interfaces with multicast routers attached. The interface is removed if a query is not received. This value may be configured. |
When you specify a value for vlan_id, the following information appears:
| VLAN ID | The VLAN ID. |
| IGMP Snooping Admin Mode | Whether IGMP Snooping is active on the VLAN. |
| Fast Leave Mode | Whether IGMP Snooping Fast-leave is active on the VLAN. |
| Group Membership Interval (secs) | The amount of time in seconds that a switch will wait for a report from a particular group on a particular interface, which is participating in the VLAN, before deleting the interface from the entry. This value may be configured. |
| Maximum Response Time (secs) | The amount of time the switch waits after it sends a query on an interface, participating in the VLAN, because it did not receive a report for a particular group on that interface. This value may be configured. |
| Multicast Router Expiry Time (secs) | The amount of time to wait before removing an interface that is participating in the VLAN from the list of interfaces with multicast routers attached. The interface is removed if a query is not received. This value may be configured. |
| Report Suppression Mode | Whether IGMP reports, set by the set igmp report-suppression command, are enabled or not. (See set igmp report-suppression.) |
The following example shows CLI display output for the command.
(Extreme 220) (Switching) #show igmpsnooping 1 VLAN ID........................................ 1 IGMP Snooping Admin Mode....................... Disabled Fast Leave Mode................................ Disabled Group Membership Interval (secs)............... 260 Max Response Time (secs)....................... 10 Multicast Router Expiry Time (secs)............ 0 Report Suppression Mode........................ Enabled
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