Users Guide

Version Description
9.5(0.1) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.1.1.0 Introduced on the E-Series ExaScale.
7.8.1.0 Introduced on the S-Series.
pre- 6.1.1.1 Introduced on the E-Series.
Usage Information Priority is stored at BSR router when receiving a Candidate-RP-Advertisement.
ip pim snooping
Enable PIM-SM snooping globally on a switch or on a VLAN interface.
Syntax
ip pim snooping [enable]
To disable PIM-SM snooping, use the no ip pim snooping [enable] command.
Defaults Disabled.
Command Modes
• CONFIGURATION: To congure PIM-SM snooping globally, enter the ip pim snooping enable
command in global conguration mode.
• VLAN INTERFACE: To congure PIM-SM snooping on a VLAN interface, enter the ip pim snooping
command in VLAN interface conguration mode.
Command History
Version Description
9.0(1.3) Introduced on the S5000.
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-Sparse Mode (PIM-SM)
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