Command Reference Guide

1118 | PIM-Sparse Mode (PIM-SM)
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PIM-SM snooping listens to PIM hello and PIM-SM join and prune messages while
maintaining the VLAN- and port-specific information in multicast packets that are snooped.
To display information about the operation of PIM-SM snooping on a switch, enter the
show ip
pim summary
command.
Related
Commands
ip pim sparse-mode
c e s
Enable PIM sparse mode and IGMP on the interface.
Syntax
ip pim sparse-mode
To disable PIM sparse mode and IGMP, enter no ip pim sparse-mode.
Defaults
Disabled.
Command Modes
INTERFACE
Command
History
Usage
Information
C-Series supports a maximum of 31 PIM interfaces.
The interface must be enabled (
no shutdown command) and not have the switchport command
configured. Multicast must also be enabled globally (using the
ip multicast-lag-hashing
command). PIM is supported on the port-channel interface.
Related
Commands
ip pim sparse-mode sg-expiry-timer
c e s
Enable expiry timers globally for all sources, or for a specific set of (S,G) pairs defined by an
access list.
Syntax
ip pim sparse-mode sg-expiry-timer seconds [access-list name]
To disable configured timers and return to default mode, enter no ip pim sparse-mode
sg-expiry-timer
.
show ip pim snooping tib Display TIB information learned through PIM-SM snooping.
Version 8.3.7.0 Introduced on S4810
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.8.1.0 Introduced on C-Series on port-channels and S-Series
ip multicast-lag-hashing Enable multicast globally.