ip pimsm-snooping

Enables PIM Sparse mode (SM) traffic snooping globally.
Syntax
ip pimsm-snooping
no ip pimsm-snooping
Command Default

PIM SM traffic snooping is disabled.

Modes

Global configuration mode

VLAN configuration mode

Usage Guidelines

The no form of this command disables PIM SM traffic snooping.

The device must be in passive mode before it can be configured for PIM SM snooping.

Use PIM SM snooping only in topologies where multiple PIM sparse routers connect through a device. PIM SM snooping does not work on a PIM dense mode router that does not send join messages and on which traffic to PIM dense ports is stopped. A PIM SM snooping-enabled device displays a warning if it receives PIM dense join or prune messages.

When PIM SM snooping is enabled globally, you can override the global setting and disable it for a specific VLAN.

Examples

This example shows how to enable PIM SM traffic snooping. 

Device(config)# ip pimsm-snooping

This example overrides the global setting and disable PIM SM traffic snooping on VLAN 20. 

Device(config)# vlan 20
Device(config-vlan-20)# no ip pimsm-snooping
Parent topic: Commands I