lsa-arrival-interval suppress-flapping (OSPFv3 view)

Function

The lsa-arrival-interval suppress-flapping command configures a suppression period in case received OSPFv3 LSAs flap.

The undo lsa-arrival-interval suppress-flapping command restores the default suppression period.

By default, the suppression period is 10s, and the suppression threshold is 30.

Format

lsa-arrival-interval suppress-flapping interval [ threshold count ]

undo lsa-arrival-interval suppress-flapping

Parameters

Parameter	Description	Value
interval	Specifies the suppression period that takes effect when received OSPFv3 LSAs flap.	The value is an integer ranging from 0 to 600, in seconds. The default value is 10s If the value is set to 0, OSPFv3 LSAs are not suppressed.
threshold count	Specifies the suppression threshold that takes effect when received OSPFv3 LSAs flap.	The value is an integer ranging from 3 to 100. The default value is 30.

Parameter

Description

Value

interval

Specifies the suppression period that takes effect when received OSPFv3 LSAs flap.

The value is an integer ranging from 0 to 600, in seconds. The default value is 10s If the value is set to 0, OSPFv3 LSAs are not suppressed.

threshold count

Specifies the suppression threshold that takes effect when received OSPFv3 LSAs flap.

The value is an integer ranging from 3 to 100. The default value is 30.

Views

OSPFv3 view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
ospf	write

Usage Guidelines

Usage Scenario

If no flapping occurs among received OSPFv3 LSAs, the configuration of the lsa-arrival-interval command prevents the device from frequently receiving LSAs. If received OSPFv3 LSAs flap, the configuration of the lsa-arrival-interval suppress-flapping command minimizes the impact of the flapping on services. The larger value of the two intervals specified in the commands is used as the suppression period.

The suppression mechanism takes effect based on the following rules:

Flapping detection: OSPFv3 starts a flapping counter. If the interval between two OSPFv3 LSAs that are received successively is less than or equal to 10s, OSPFv3 records a flapping event and increases the flapping_count by 1.
Suppression phase: If the flapping_count is greater than or equal to count, flapping suppression takes effect.
Suppression exit: If the interval between two OSPFv3 LSAs that are received successively is greater than 10s, OSPFv3 resets the flapping_count and exits from suppression.

Example

# Set the suppression period that takes effect when received OSPFv3 LSAs flap to 200s.

<HUAWEI> system-view
[~HUAWEI] ospfv3 1
[*HUAWEI-ospfv3-1] lsa-arrival-interval suppress-flapping 200