IBM 12.1(22)EA6 - Manual (Page 292)

14-14
Cisco Systems Intelligent Gigabit Ethernet Switch Modules for the IBM BladeCenter, Software Configuration Guide
24R9746
Chapter 14 Configuring IGMP Snooping and MVR
Displaying IGMP Snooping Information
To enable IP multicast-source-only learning, use the ip igmp snooping source-only-learning global
configuration command. To enable PIM v2 multicast router discovery, use the p igmp snooping
mrouter learn pim v2 global configuration command.
This example shows how to disable IP multicast-source-only learning and PIM v2 multicast router
discovery:
Switch# configure terminal
Switch(config)# no ip igmp snooping source-only-learning
Switch(config)# no ip igmp snooping mrouter learn pim v2
Switch(config)# end
Configuring the Aging Time
You can set the aging time for forwarding-table entries that the switch learns by using the IP
multicast-source-only learning method.
Beginning in privileged EXEC mode, follow these steps to configure the aging time:
To disable the aging of the forwarding table entries, enter the ip igmp snooping source-only-learning
age-timer 0 global configuration command.
If you disable source-only learning by using the no ip igmp snooping source-only learning global
configuration command and the aging time is enabled, it has no effect on the switch.
Displaying IGMP Snooping Information
You can display IGMP snooping information for dynamically learned and statically configured router
ports and VLAN interfaces. You can also display MAC address multicast entries for a VLAN configured
for IGMP snooping.
To display IGMP snooping information, use one or more of the privileged EXEC commands in
Table 14-4 .
Command Purpose
Step 1 configure terminal Enter global configuration mode
Step 2 ip igmp snooping source-only learning age-timer
time Set the aging time. The range is 0 to 2880 seconds. The default
is 600 seconds (10 minutes).
Step 3 end Return to privileged EXEC mode.
Step 4 show running-config | include
source-only-learning Verify the aging time.
Step 5 copy running-config startup-config (Optional) Save your entries in the configuration file.