Enabling Mld Immediate Leave - Cisco Catalyst 2960 Software Configuration Manual
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Chapter 36
Configuring IPv6 MLD Snooping
Beginning in privileged EXEC mode, follow these steps to add a multicast router port to a VLAN:
Command
Step 1
configure terminal
Step 2
ipv6 mld snooping vlan vlan-id mrouter
interface interface-id
Step 3
end
Step 4
show ipv6 mld snooping mrouter [vlan vlan-id] Verify that IPv6 MLD snooping is enabled on the VLAN
Step 5
copy running-config startup-config
To remove a multicast router port from the VLAN, use the no ipv6 mld snooping vlan vlan-id mrouter
interface interface-id global configuration command.
This example shows how to add a multicast router port to VLAN 200:
Switch# configure terminal
Switch(config)# ipv6 mld snooping vlan 200 mrouter interface gigabitethernet1/0/2
Switch(config)# exit
Enabling MLD Immediate Leave
When you enable MLDv1 Immediate Leave, the switch immediately removes a port from a multicast
group when it detects an MLD Done message on that port. You should only use the Immediate-Leave
feature when there is a single receiver present on every port in the VLAN. When there are multiple
clients for a multicast group on the same port, you should not enable Immediate-Leave in a VLAN.
Beginning in privileged EXEC mode, follow these steps to enable MLDv1 Immediate Leave:
Command
Step 1
configure terminal
Step 2
ipv6 mld snooping vlan vlan-id
immediate-leave
Step 3
end
Step 4
show ipv6 mld snooping vlan vlan-id
Step 5
copy running-config startup-config
To disable MLD Immediate Leave on a VLAN, use the no ipv6 mld snooping vlan vlan-id
immediate-leave global configuration command.
This example shows how to enable MLD Immediate Leave on VLAN 130:
Switch# configure terminal
Switch(config)# ipv6 mld snooping vlan 130 immediate-leave
Switch(config)# exit
OL-26520-01
Purpose
Enter global configuration mode.
Specify the multicast router VLAN ID, and specify the interface
to the multicast router.
•
The VLAN ID range is 1 to 1001 and 1006 to 4094.
The interface can be a physical interface or a port channel.
•
The port-channel range is 1 to 48.
Return to privileged EXEC mode.
interface.
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode.
Enable MLD Immediate Leave on the VLAN interface.
Return to privileged EXEC mode.
Verify that Immediate Leave is enabled on the VLAN interface.
(Optional) Save your entries in the configuration file.
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
Configuring IPv6 MLD Snooping
36-9
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