User Guide

This command enables PIM SM traffic snooping. The PIM SM traffic snooping feature assumes that the
network has routers that are running PIM SM.
NOTE
The device must be in passive mode before it can be configured for PIM SM snooping.
To disable the feature, enter the no ip pimsm-snooping command.
device(config)#no ip pimsm-snooping
If you also want to disable IP multicast traffic reduction, enter the no ip multicast command.
device(config)#no ip multicast
Syntax: [no] ip pimsm-snooping
Enabling PIM SM snooping on a VLAN
You can enable PIM SM snooping for a specific VLAN. For example, the following commands enable
PIM SM snooping on VLAN 20.
device(config)#vlan 20
device(config-vlan-20)#multicast pimsm-snooping
Syntax: [no] multicast pimsm-snooping
Disabling PIM SM snooping on a VLAN
When PIM SM snooping is enabled globally, you can still disable it for a specific VLAN. For example,
the following commands disable PIM SM snooping for VLAN 20. This setting overrides the global
setting.
device(config)#vlan 20
device(config-vlan-20)#multicast disable-pimsm-snoop
Syntax: [no] multicast disable-pimsm-snoop
PIM SM snooping show commands
This section shows how to display information about PIM SM snooping, including:
• Displaying PIM SM snooping information on page 39
• Displaying PIM SM snooping information on a Layer 2 switch on page 40
• Displaying PIM SM snooping information for a specific group or source group pair on page 41
Displaying PIM SM snooping information
To display PIM SM snooping information, enter the show ip multicast pimsm-snooping command.
device#show ip multicast pimsm-snooping
vlan 1, has 2 caches.
1 (* 230.1.1.1) has 1 pim join ports out of 1 OIF
Enabling PIM SM snooping on a VLAN
FastIron Ethernet Switch IP Multicast Configuration Guide 39
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