Command Line Reference Guide

Usage
Information
Because PIM-SM snooping is used in a Layer 2 environment, PIM-SM snooping and PIM
multicast routing are mutually exclusive. PIM-SM snooping cannot be enabled on a switch/
router if PIM-SM or PIM-DM is enabled.
If enabled at the global level, PIM-SM snooping is automatically enabled on all VLANs unless
the no ip pim snooping command has been entered on a VLAN.
If enabled at the VLAN level, PIM-SM snooping requires that you also enter the no
shutdown command to enable the interface.
PIM-SM snooping is supported with IGMP snooping, and forwards the IGMP report on the port
that connects to the PIM DR. Dell Networking recommends that you do not enable IGMP
snooping on a PIM-SM snooping-enabled VLAN interface unless until it is necessary for VLAN
operation.
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
show ip pim snooping tib – displays TIB information learned through PIM-SM snooping.
ip pim sparse-mode
Enable PIM sparse mode and IGMP on the interface.
S5000
Syntax
ip pim sparse-mode
To disable PIM sparse mode and IGMP, use the no ip pim sparse-mode command.
Defaults Disabled.
Command Modes INTERFACE
Command History
Version 9.0(1.3) Introduced on the S5000.
Usage
Information
The interface must be enabled (the 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 multicast-lag-hashing – enables multicast globally.
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