PurposeCommand or Action
Enters the global configuration mode.configure terminal
Example:
Device# configure terminal
Step 2
Configures the IGMP robustness variable. The range is 1 to 3
times.
ip igmp snooping robustness-variable count
Example:
Device(config)# ip igmp snooping
Step 3
The recommended value for the robustness variable is 2. Use this
command to change the value of the robustness variable for IGMP
snooping from the default (2) to a specified value.
robustness-variable 3
(Optional) Configures the IGMP robustness variable on the VLAN
interface. The range is 1 to 3 times. The recommended value for
the robustness variable is 2.
ip igmp snooping vlan vlan-id
robustness-variable count
Example:
Device(config)#ip igmp snooping vlan 100
Step 4
Configuring the robustness variable count on a VLAN
overrides the globally configured value.
Note
robustness-variable 3
Returns to privileged EXEC mode.end
Example:
Device(config)# end
Step 5
(Optional) Displays the configured IGMP robustness variable
count.
show ip igmp snooping
Example:
Device# show ip igmp snooping
Step 6
(Optional) Saves your entries in the configuration file.copy running-config startup-config
Example:
Device# copy running-config startup-config
Step 7
Configuring the IGMP Last Member Query Count (CLI)
To configure the number of times the device sends IGMP group-specific or group-source-specific (with IGMP
version 3) query messages in response to receiving a group-specific or group-source-specific leave message,
use this command.
IP Multicast Routing Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3650 Switches)
68 OL-29890-01
Configuring IGMP
How to Configure IGMP Snooping
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