Cisco Catalyst 3550 Command Reference Manual page 148

ip igmp snooping source-only-learning age-timer
You can verify your settings by entering the show running-config | include source-only-learning
privileged EXEC command.
Related Commands Command
ip igmp snooping
show running-config | include
source-only-learning
Catalyst 3550 Multilayer Switch Command Reference
2-122
Description
Globally enables IGMP snooping. IGMP snooping must be globally
enabled in order to be enabled on a VLAN.
Displays the configuration information running on the switch. For
syntax information, select Cisco IOS Configuration
Fundamentals Command Reference for Release 12.1 > Cisco
IOS File Management Commands > Configuration File
Commands.
Chapter 2 Cisco IOS Commands
78-11195-09