The ipv6 pathmtu age command sets the aging time of dynamic PMTU entries.
The undo ipv6 pathmtu age command restores the aging time of dynamic PMTU entries to the default value.
By default, the aging time of dynamic PMTU entries is 10 minutes.
| Parameter | Description | Value |
|---|---|---|
| age-time | Specifies the aging time of dynamic specified PMTU entries. | The value is an integer that ranges from 10 to 100, in minutes. The default value is 10 minutes, which is recommended. |
Usage Scenario
The lifetime of a dynamic PMTU entry can be changed by setting an aging time for dynamic PMTU entries.
To slow down PMTU aging, run the ipv6 pathmtu age command to set the aging time of dynamic PMTU entries to a larger value.
Precautions
This command changes only the aging time of dynamic PMTUs but not static PMTUs because static PMTU entries never age.
The priority of a static PMTU is higher than that of a dynamic PMTU. If the static PMTU exists, the dynamic PMTU does not take effect.
The aging time for the PMTU is valid only for the dynamic PMTU entries generated after this configuration, instead of the PMTU entries generated before this configuration.