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Catalyst 2950 and Catalyst 2955 Switch Command Reference
OL-10102-01
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
mvr immediate
mvr immediate
Use the mvr immediate interface configuration command to enable the Immediate-Leave feature on an
interface. Use the no form of this command to disable the feature on the interface.
mvr immediate
no mvr immediate
Syntax Description This command has no arguments or keywords.
Defaults The Immediate-Leave feature is disabled.
Command Modes Interface configuration
Command History
Usage Guidelines The Immediate-Leave feature applies only to receiver ports. When the Immediate-Leave feature is
enabled, a receiver port leaves a multicast group more quickly. When the switch receives an Internet
Group Management Protocol (IGMP) leave message from a group on a receiver port, it sends an IGMP
query on that port and waits for IGMP group membership reports. If no reports are received in a
configured time period, the receiver port is removed from multicast group membership. With the
Immediate-Leave feature, an IGMP query is not sent from the receiver port on which the IGMP leave
was received. As soon as the leave message is received, the receiver port is removed from multicast group
membership, thus speeding up leave latency.
The Immediate-Leave feature should only be enabled on receiver ports to which a single receiver device
is connected.
Examples This example shows how to enable the Immediate-Leave feature on a port:
Switch(config-if)# mvr immediate
You can verify your settings by entering the show mvr privileged EXEC command.
Related Commands
Release Modification
12.1(6)EA2 This command was introduced.
Command Description
mvr Enables multicast VLAN registration (MVR).
mvr type Configures a port as a receiver or source port.
mvr vlan group Configures a receiver port as a member of an MVR group.
show mvr Displays MVR global parameters or port parameters.
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