The ipv6 fib regularly-refresh start-time command configures a start time for IPv6 FIB 24-hour refresh.
The undo ipv6 fib regularly-refresh start-time command restores the default start time for IPv6 FIB 24-hour refresh.
By default, the start time for IPv6 FIB 24-hour refresh is 00:00.
ipv6 fib regularly-refresh start-time start-time
undo ipv6 fib regularly-refresh start-time [ start-time ]
| Parameter | Description | Value |
|---|---|---|
| start-time | Specifies a start time for IPv6 FIB 24-hour refresh. | The value is an integer ranging from 0 to 23. |
Usage Scenario
By default, the start time for IPv6 FIB 24-hour refresh is 00:00. During the refresh, the IPv6 FIB table delivers enormous route messages, which cause high CPU usage in a short period. If the periodic refresh also starts during peak hours, it may affect service reliability. To refresh the IPv6 FIB entries in off-peak hours, run the ipv6 fib regularly-refresh start-time command to configure flexibly a start time between 00:00 and 23:00 for IPv6 FIB 24-hour refresh.
Prerequisites
IPv6 FIB 24-hour refresh has been enabled.
Precautions
If the system time changes, the 24-hour refresh timer will not adjust automatically the latest timeout interval. You need to configure a new start time to adjust the timeout interval for the refresh timer.