Dell Force10 S25N-S50N FTOS Command Line Reference Guide FTOS 8.4.2.7 E-Series - Page 1107

ip pim snooping ex Enable PIM-SM snooping globally on a switch or on a VLAN interface. Syntax ip pim snooping [enable] To disable PIM-SM snooping enter the no form of the command. Defaults Disabled. Command Modes CONFIGURATION: To configure PIM-SM snooping globally, enter the ip pim snooping enable command in global configuration mode. VLAN INTERFACE: To configure PIM-SM snooping on a VLAN interface, enter the ip pim snooping command in VLAN interface configuration mode. Command History Version 8.4.1.1 Introduced on 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. It is recommended 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 Display TIB information learned through PIM-SM snooping. PIM-Sparse Mode (PIM-SM) | 1107