Enabling Igmp Immediate-Leave Processing - Cisco Catalyst 2950 Software Configuration Manual
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- Configuration manual (710 pages) ,
- Command reference manual (686 pages) ,
- Software configuration manual (544 pages)
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Chapter 20
Configuring IGMP Snooping and MVR
Command
Step 3
end
Step 4
show ip igmp snooping mrouter vlan vlan-id
or
show mac address-table multicast vlan vlan-id
Step 5
copy running-config startup-config
To remove the Layer 2 port from the multicast group, use the no ip igmp snooping vlan vlan-id static
mac-address interface interface-id global configuration command.
This example shows how to statically configure a host on an interface and verify the configuration:
Switch# configure terminal
Switch(config)# ip igmp snooping vlan 1 static 0100.5e00.0203 interface gigabitethernet0/1
Switch(config)# end
Enabling IGMP Immediate-Leave Processing
When you enable IGMP Immediate-Leave processing, the switch immediately removes a port when it
detects an IGMP version 2 leave message on that port. You should use the Immediate-Leave feature only
when there is a single receiver present on every port in the VLAN.
Immediate Leave is supported with only IGMP version 2 hosts.
Beginning in privileged EXEC mode, follow these steps to enable IGMP Immediate-Leave processing:
Command
Step 1
configure terminal
Step 2
ip igmp snooping vlan vlan-id
immediate-leave
Step 3
end
Step 4
show ip igmp snooping vlan vlan-id
Step 5
copy running-config startup-config
To disable IGMP Immediate-Leave on a VLAN, use the no ip igmp snooping vlan vlan-id
immediate-leave global configuration command.
This example shows how to enable IGMP immediate-leave processing on VLAN 130:
Switch# configure terminal
Switch(config)# ip igmp snooping vlan 130 immediate-leave
Switch(config)# end
78-11380-12
Purpose
Return to privileged EXEC mode.
Verify that the member port is a member of the VLAN multicast
group.
Verify the member port and the MAC address
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode
Enable IGMP Immediate-Leave processing on the VLAN interface.
Return to privileged EXEC mode.
Verify that Immediate Leave is enabled on the VLAN.
(Optional) Save your entries in the configuration file.
Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
Configuring IGMP Snooping
20-11
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Troubleshooting
