Ruijie RG-CS83 Series Configuration Manual page 152

Web-based Configuration Guide
Parameter
SPF Calculation
Graceful Restart
(2) Configure an interface.
Description
When the link state database (LSDB) changes, OSPF
recalculates the shortest path, and sets the interval to
prevent frequent network changes from occupying a
large number of resources
Waiting Interval: When the state changes, the timer
is triggered. The delay is calculated for the first time
after the timer expires. The default value is 0 ms.
Min Interval: As the number of changes increases,
the time of each interval will increase according to the
algorithm, and the default value is 50 ms.
Max Interval: When the calculated interval reaches
the maximum interval, the subsequent interval is
always equal to the maximum interval. If the time
from the last calculation exceeds the maximum
interval and the LSDB is not updated, the timer is
disabled.
Graceful Restart (GR) can avoid route flapping
caused by traffic interruption and active/standby
board switchover, thus ensuring the stability of key
services.
Graceful Restart Helper: The Graceful Restart
Helper function is enabled when this switch is turned
on.
LSA Check: LSA packets outside the domain are
checked when this switch is turned on.
Max Wait Time: Timing starts after the device
receives the GR packet from the peer device. If the
peer device does not complete GR within Max Wait
Time, the device exits the GR Helper mode. The
default value is 1800 seconds.
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Configuring Route