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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
ip igmp snooping vlan mrouter
Usage Guidelines You enter this command in VLAN interface configuration mode only.
The interface to the switch must be in the VLAN where you are entering the command. It must be both
administratively up and line protocol up.
The CGMP learning method can decrease control traffic.
The learning method that you configure is saved in NVRAM.
The static connections to multicast interfaces are supported only on switch interfaces.
Examples This example shows how to specify the next-hop interface to a multicast switch:
Switch(config-if)# ip igmp snooping 400 mrouter interface fastethernet 5/6
Switch(config-if)#
This example shows how to specify the multicast switch learning method:
Switch(config-if)# ip igmp snooping 400 mrouter learn cgmp
Switch(config-if)#
Related Commands Command Description
ip igmp snooping Enable IGMP snooping.
ip igmp snooping vlan immediate-leave Enable IGMP immediate-leave processing.
ip igmp snooping vlan static Configures a Layer 2 interface as a member of a group.
show ip igmp snooping Displays information on dynamically learned and manually
configured VLAN switch interfaces.
show ip igmp snooping mrouter Displays information on the dynamically learned and
manually configured multicast switch interfaces.
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