ip multicast mcache-age

Configures the time for an mcache to age out when it does not receive traffic.
Syntax
ip multicast mcache-agenum
no ip multicast mcache-age
Command Default

The mcache ages out after the default age-out interval.

Parameters
num
Specifies the time, in multiples of 60 seconds, the device should wait before stopping traffic to a port when a leave message is received The range is 60 through 3600 seconds, in multiples of 60. The default is 180 seconds.
Modes

Global configuration mode

Usage Guidelines

The no form of this command restores the default mcache age-out time.

Multicast traffic is hardware switched. One minute before aging out an mcache, the device mirrors a packet of this mcache to CPU to reset the age. If no data traffic arrives within 60 seconds, this mcache is deleted. Configuring a lower age-out time removes resources consumed by idle streams quickly, but it mirrors packets to CPU often. Configure a higher value only when data streams are arriving consistently.

Note: Multicast mcache may not expire according to the configured time. You may notice a delay of 0 to 60 seconds over the configured value.

Examples

This example configures the time for an mcache to age out to 180 seconds. 

device(config)# ip multicast mcache-age 180
History
Release version Command history
08.0.60 Added note about multicast mcache expiry.
Parent topic: Commands I