isis suppress-flapping peer

Function

The isis suppress-flapping peer command configures detection parameters for IS-IS neighbor relationship flapping suppression.

The undo isis suppress-flapping peer command restores the default detection parameters.

By default, the detection interval of IS-IS neighbor relationship flapping suppression is 60s, the suppression threshold is 10, and the interval for exiting from suppression is 120s.

Format

isis suppress-flapping peer { detecting-interval detecting-interval | threshold threshold | resume-interval resume-interval } ^*

undo isis suppress-flapping peer { detecting-interval detecting-interval | threshold threshold | resume-interval resume-interval } ^*

Parameters

Parameter	Description	Value
detecting-interval detecting-interval	Specifies the detection interval of IS-IS neighbor relationship flapping suppression. Each IS-IS interface on which IS-IS neighbor relationship flapping suppression is enabled starts a flapping counter. If the interval between two successive neighbor status changes from Full to a non-Full state is shorter than detecting-interval, a valid flapping-event is recorded, and the flapping-count increases by 1.	The value is an integer ranging from 1 to 300, in seconds. The default value is 60s.
threshold threshold	Specifies the threshold of IS-IS neighbor relationship flapping suppression. When the flapping-count reaches or exceeds threshold, flapping suppression takes effect.	The value is an integer ranging from 1 to 1000. The default value is 10.
resume-interval resume-interval	Specifies the interval for exiting from IS-IS neighbor relationship flapping suppression. If the interval between two successive neighbor status changes from Full to a non-Full state is longer than resume-interval, the flapping-count is reset. If IS-IS neighbor relationship flapping suppression works in hold-max-cost mode, resume-interval indicates the duration of this mode. NOTE: The value of resume-interval must be greater than that of detecting-interval.	The value is an integer ranging from 2 to 1000, in seconds. The default value is 120s.

Parameter

Description

Value

detecting-interval detecting-interval

Specifies the detection interval of IS-IS neighbor relationship flapping suppression.

Each IS-IS interface on which IS-IS neighbor relationship flapping suppression is enabled starts a flapping counter. If the interval between two successive neighbor status changes from Full to a non-Full state is shorter than detecting-interval, a valid flapping-event is recorded, and the flapping-count increases by 1.

The value is an integer ranging from 1 to 300, in seconds. The default value is 60s.

threshold threshold

Specifies the threshold of IS-IS neighbor relationship flapping suppression.

When the flapping-count reaches or exceeds threshold, flapping suppression takes effect.

The value is an integer ranging from 1 to 1000. The default value is 10.

resume-interval resume-interval

Specifies the interval for exiting from IS-IS neighbor relationship flapping suppression.

If the interval between two successive neighbor status changes from Full to a non-Full state is longer than resume-interval, the flapping-count is reset.
If IS-IS neighbor relationship flapping suppression works in hold-max-cost mode, resume-interval indicates the duration of this mode.

NOTE:

The value of resume-interval must be greater than that of detecting-interval.

The value is an integer ranging from 2 to 1000, in seconds. The default value is 120s.

Views

Ethernet interface view, Ethernet sub-interface view, Eth-Trunk interface view, Eth-Trunk sub-interface view, Tunnel interface view, Loopback interface view, Dialer interface view, VLANIF interface view, Virtual-Template interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
isis	write

Usage Guidelines

Usage Scenario

To configure detection parameters for IS-IS neighbor relationship flapping suppression on an interface, run the isis suppress-flapping peer command. However, keeping the default configurations is recommended.

Prerequisites

IS-IS neighbor relationship flapping suppression must have been enabled globally before you configure detection parameters for it. By default, the function is enabled. If it is disabled, run the undo suppress-flapping peer disable command to enable it before you configure the detection parameters.

Example

# Set the detection interval of IS-IS neighbor relationship flapping suppression to 5s, the suppression threshold to 40, and the interval for exiting from suppression to 20s on GigabitEthernet 0/0/0.

<sysname> system-view

[sysname] interface GigabitEthernet0/0/0

[sysname-GigabitEthernet0/0/0] isis suppress-flapping peer detecting-interval 5 threshold 40 resume-interval 20