18-12
Software Configuration Guide—Release 12.2(25)EW
OL-6696-01
Chapter 18 Configuring IGMP Snooping and Filtering
Displaying IGMP Snooping Information
Displaying Querier Information
To display querier information, perform this task:
This example shows how to display the IGMP snooping querier information for all VLANs on the
switch:
Switch# show ip igmp snooping querier
Vlan IP Address IGMP Version Port
---------------------------------------------------
2 10.10.10.1 v2 Router
3 172.20.50.22 v3 Fa3/15
This example shows how to display the IGMP snooping querier information for VLAN 3:
Switch# show ip igmp snooping querier vlan 3
Vlan IP Address IGMP Version Port
---------------------------------------------------
3 172.20.50.22 v3 Fa3/15
Displaying IGMP Host Membership Information
Note By default, EHT maintains a maximum of 1000 entries in the EHT database. Once this limit is reached,
no additional entries are created. To create additional entries, clear the database with the clear ip igmp
snooping membership vlan command.
To display host membership information, perform this task:
This example shows how to display host membership information for VLAN 20 and to delete the EHT
database:
Switch# show ip igmp snooping membership vlan 20
#channels: 5
#hosts : 1
Source/Group Interface Reporter Uptime Last-Join Last-Leave
40.40.40.2/224.10.10.10 Gi4/1 20.20.20.20 00:23:37 00:06:50 00:20:30
40.40.40.3/224.10.10.10 Gi4/2 20.20.2020 00:23:37 00:06:50 00:20:30
40.40.40.4/224.10.10.10Gi4/1 20.20.20.20 00:39:42 00:09:17 -
Command Purpose
Switch# show ip igmp snooping querier [vlan
vlan_ID
]
Displays multicast router interfaces.
Command Purpose
Switch# show ip igmp snooping membership
[interface
interface_num
][vlan
vlan_ID
]
[reporter
a.b.c.d
] [source
a.b.c.d
group
a.b.c.d
]
Displays Explicit Host Tracking information.
Note This command is valid only if EHT is
enabled on the switch.
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