Reference Guide

Command
History
Version Description
8.3.12.0 Introduced on the S4810.
8.4.1.1 Introduced on the E-Series ExaScale.
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 Force10 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.
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
This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
1604
PIM-Sparse Mode (PIM-SM)