Specifications

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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
78-11380-07
Chapter 18 Configuring IGMP Snooping and MVR
Displaying IGMP Snooping Information
Beginning in privileged EXEC mode, follow these steps to disable IP multicast-source-only learning:
To enable IP multicast-source-only learning, use the ip igmp snooping source-only-learning global
configuration command.
This example shows how to disable IP multicast-source-only learning and verify the configuration:
Switch# configure terminal
Switch(config)# no ip igmp snooping source-only-learning
Switch(config)# end
Switch# show running-config | include source-only-learning
Current configuration : 1972 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Switch
!
enable password my_password
!
ip subnet-zero
no ip igmp snooping source-only-learning
!
!
spanning-tree extend system-id
no spanning-tree vlan 1
!
!
interface FastEthernet0/1
no ip address
!
<output truncated>
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 18-4.
Command Purpose
Step 1
configure terminal Enter global configuration mode
Step 2
no ip igmp snooping source-only-learning Disable IP multicast-source-only learning.
Step 3
end Return to privileged EXEC mode.
Step 4
show running-config | include
source-only-learning
Verify that IP multicast-source-only learning is disabled.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.