Cisco NME-16ES-1G User Guide - Page 103
Enabling IGMP Immediate-Leave Processing, Statically Configuring an Interface to Join a Group
UPC - 882658036101
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16- and 36-Port Ethernet Switch Module for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Configuration Tasks Step 4 Step 5 Command Purpose show ip igmp snooping [vlan vlan-id] Displays snooping configuration. (Optional) vlan-id is the number of the VLAN. copy running-config startup-config (Optional) Saves your configuration to the startup configuration. To disable IGMP snooping on a VLAN interface, use the no ip igmp snooping vlan vlan-id global configuration command for the specified VLAN number (for example, vlan1). Enabling IGMP Immediate-Leave Processing When you enable IGMP Immediate-Leave processing, the Ethernet switch network module immediately removes a port from the IP multicast group when it detects an IGMP version 2 leave message on that port. Immediate-Leave processing allows the switch to remove an interface that sends a leave message from the forwarding table without first sending out group-specific queries to the interface. You should use the Immediate-Leave feature only when there is only a single receiver present on every port in the VLAN. Beginning in privileged EXEC mode, follow these steps to enable IGMP Immediate-Leave processing: Step 1 Step 2 Step 3 Command configure terminal ip igmp snooping vlan vlan-id immediate-leave end Purpose Enters global configuration mode. Enables IGMP Immediate-Leave processing on the VLAN interface. Returns to privileged EXEC mode. To disable Immediate-Leave processing, follow Steps 1 and 2 to enter interface configuration mode, and use the no ip igmp snooping vlan vlan-id immediate-leave global configuration command. Statically Configuring an Interface to Join a Group Ports normally join multicast groups through the IGMP report message, but you can also statically configure a host on an interface. Beginning in privileged EXEC mode, follow these steps to add a port as a member of a multicast group: Step 1 Step 2 Command configure terminal ip igmp snooping vlan vlan-id static mac-address interface interface-id Step 3 end Purpose Enters global configuration mode Statically configures a port as a member of a multicast group: • vlan-id is the multicast group VLAN ID. • mac-address is the group MAC address. • interface-id is the member port. Returns to privileged EXEC mode. Cisco IOS Release 12.2(2)XT, 12.2(8)T, and 12.2(15)ZJ 103