Setup Guide

Viewing IGMP Groups
To view both learned and statically congured IGMP groups, use the following command.
• View both learned and statically congured IGMP groups.
EXEC Privilege mode
show ip igmp groups
show ipv6 mld groups
Example of the show ip igmp groups Command
DellEMC# show ip igmp groups
Total Number of Groups: 2
IGMP Connected Group Membership
Group Address Interface Mode Uptime Expires Last Reporter
225.1.1.1 TenGigabitEthernet 1/1 IGMPV2 00:11:19 00:01:50 165.87.34.100
225.1.2.1 TenGigabitEthernet 1/1 IGMPV2 00:10:19 00:01:50 165.87.31.100
Viewing IGMP Snooping Groups
To view both learned and statically congured IGMP snooping groups, use the following command.
• View both learned and statically congured IGMP snooping groups.
EXEC Privilege mode
show ip igmp snooping groups
Example of the show ip igmp snooping groups Command
Dell# show ip igmp groups
Total Number of Groups: 2
IGMP Connected Group Membership
Group Address Interface Mode Uptime Expires Last Reporter
225.1.1.1 TenGigabitEthernet 1/1 IGMPV2 00:11:19 00:01:50 165.87.34.100
225.1.2.1 TenGigabitEthernet 1/1 IGMPV2 00:10:19 00:01:50 165.87.31.100
Member Ports: Te 1/41
Adjusting Timers
The following sections describe viewing and adjusting timers.
To view the current value of all IGMP timers, use the following command.
• View the current value of all IGMP timers.
EXEC Privilege mode
show ip igmp interface
For more information, refer to the example shown in Viewing IGMP Enabled Interfaces.
Adjusting Query and Response Timers
The querier periodically sends a general query to discover which multicast groups are active. A group must have at least one host to be
active.
When a host receives a query, it does not respond immediately, but rather starts a delay timer. The delay time is set to a random value
between 0 and the maximum response time. The host sends a response when the timer expires; in version 2, if another host responds
before the timer expires, the timer is nullied, and no response is sent.
Internet Group Management Protocol (IGMP)
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