clock source-lost holdoff-time

Function

The clock source-lost holdoff-time command configures a holdoff time after clock source signals are lost.

By default, the holdoff time is 1000 ms.

Format

clock source-lost holdoff-time holdoff-time-value

Parameters

Parameter	Description	Value
holdoff-time-value	Holdoff time after clock source signals are lost.	The value is an integer ranging from 300 to 1800, in milliseconds. The default value is 1000.

Parameter

Description

Value

holdoff-time-value

Holdoff time after clock source signals are lost.

The value is an integer ranging from 300 to 1800, in milliseconds. The default value is 1000.

Views

System view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
clksync	write

Usage Guidelines

Usage Scenario

When clock source signals are lost, the device reports status changes only after a holdoff time to instruct the clock source selection algorithm to reselect a clock source. This processing mechanism prevents the clock source selection algorithm from frequently reselecting a clock source when clock source signals are lost for a short time.

You can configure an appropriate holdoff time based on the following rules:

If the current clock source becomes invalid and the device needs to immediately switch to another clock source, configure a small holdoff time.
To prevent frequent clock source reselections caused by the short invalidity of the current clock source, configure a large holdoff time.

Example

# Set the holdoff time after clock source signals are lost to 500 milliseconds.

<HUAWEI> system-view
[~HUAWEI] clock source-lost holdoff-time 500