Configuring the Interval for Receiving LSAs

To make topology changes be sensed immediately, you can configure the interval for receiving LSAs as 0.

Context

In a stable network or a network that requires fast routing aggregation, you can set the LSA receive interval to 0. Thus, once the topology or routes change, the change can be advertised immediately. The speed of route aggregation on the network is increased.

Procedure

Access the system view.
system-view
Access the OSPF process view.
ospf [ process-id ]
Set an interval for receiving LSAs.
lsa-arrival-interval { interval | intelligent-timer max-interval start-interval hold-interval }

By default, the intelligent timer is enabled. The interval for receiving LSAs is expressed in milliseconds. The maximum interval for receiving LSAs is 1000 ms, the initial interval is 500 ms, and the Holdtime interval is 500 ms. After an intelligent timer is enabled, the interval for receiving LSAs is as follows:
1. The initial interval for receiving LSAs is specified by the parameter start-interval.
2. The interval for receiving LSAs for the nth (n≥2) time is equal to hold-interval * 2(n-1).
3. When the interval specified by hold-interval * 2(n-1) reaches the maximum interval specified by max-interval, OSPF receives LSAs at the maximum interval for three consecutive times. Then, go back to Step 3.a, and OSPF receives LSAs at the initial interval specified by start-interval.