ipv6 multicast mcache-age
Configures the time for an mcache to age out when it does not receive traffic.
Command Default
The mcache ages out after the default age-out interval, which is 180 seconds for ICX 7750, ICX 7450, and ICX 7250 devices.
Parameters
Modes
Global configuration mode
Usage Guidelines
The
no form of this command restores the default mcache age-out time.
You can set the time for a multicast cache (mcache) to age out when it does not receive traffic. Two seconds before an mcache is aged out, the device mirrors a packet of the mcache to the CPU to reset the age. If no data traffic arrives within two seconds, the mcache is deleted.
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.
Note: On devices that support MAC-based MLD snooping (like the
ICX 7750,
ICX 7450, and
ICX 7250), more than one mcache can be mapped to the same destination MAC. When an mcache
entry is deleted, the MAC entry may not be deleted. If you configure a lower value,
the resource consumed by idle streams is quickly removed, but packets are mirrored
to the CPU more frequently. Configure a higher value only when data streams are arriving
consistently.
History
| Release version | Command history |
|---|---|
| 08.0.60 | Added note about multicast mcache expiry. |