als restart pulse-width

Function

The als restart pulse-width command sets the ALS pulse width for the laser of an optical module.

The undo als restart pulse-width command restores the default ALS pulse width for the laser of an optical module.

By default, the ALS pulse width of the laser is 2s.

Format

als restart pulse-width pulse-width

undo als restart pulse-width

Parameters

Parameter	Description	Value
pulse-width	Specifies the ALS pulse width of the laser.	The value is an integer that ranges from 2 to 200, in seconds.

Views

Interface view, port group view

Default Level

2: Configuration level

Usage Guidelines

The ALS pulse width refers to the period between rising edges of pulses. A short ALS pulse width is beneficial for energy saving, but the fiber link recovery cannot be detected immediately. In contrary, a long ALS pulse width consumes more power but the fiber link recovery can be detected immediately.

Example

# Set the ALS pulse width on GigabitEthernet0/0/1 to 3s.

<HUAWEI> system-view
[HUAWEI] interface gigabitethernet 0/0/1
[HUAWEI-GigabitEthernet0/0/1] als restart pulse-width 3