lsa-arrival-interval

Function

The lsa-arrival-interval command sets an interval for receiving LSAs.

The undo lsa-arrival-interval command restores the default interval for receiving LSAs.

By default, the interval for receiving LSA packets is one second.

Format

lsa-arrival-interval { interval | intelligent-timer max-interval start-interval hold-interval }

undo lsa-arrival-interval

Parameters

Parameter	Description	Value
interval	Specifies the interval for receiving LSAs.	The value is an integer ranging from 0 to 10000, in ms.
intelligent-timer	Enables an intelligent timer to receive LSAs.	-
max-interval	Specifies the maximum interval for receiving LSAs.	The value is an integer ranging from 1 to 120000, in ms. The default value is 1000.
start-interval	Specifies the initial interval for receiving LSAs.	The value is an integer ranging from 0 to 60000, in ms. The default value is 500.
hold-interval	Specifies the Holdtime interval for receiving LSAs.	The value is an integer ranging from 1 to 60000, in ms. The default value is 500.

Views

OSPF view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

To prevent frequent LSA updates caused by network connection or frequent route flapping, you can set the interval for receiving LSAs using this command. A router receives LSAs only when it meets the set interval.

In a stable network where routes need to be fast converged, you can set the interval for receiving LSAs at millisecond level to receive and update LSAs in time. The change of the topology or the route, therefore, can be immediately detected, and LSDB synchronization speed is improved.

If there is no special requirement for the network, using the default value is recommended.

Configuration Impact

After this command is configured, the interval for receiving LSAs is as follows:

The initial interval for receiving LSAs is specified by the parameter start-interval.
The interval for receiving LSAs for the nth (n≥2) time is equal to hold-interval × 2^(n-2).
When the interval specified by hold-interval x 2^(n-2) reaches the maximum interval specified by max-interval, OSPF performs SPF calculation at the maximum interval until max-interval expires without flapping or the OSPF process is restarted.

Precautions

You are advised to set the receiving interval specified by lsa-arrival-interval to be a value smaller than or equal to the Holdtime interval specified bylsa-originate-interval.

Example

# Set the interval for receiving LSAs to 0 milliseconds.

<HUAWEI> system-view

[HUAWEI] ospf 1

[HUAWEI-ospf-1] lsa-arrival-interval 0