Chapter 78 Power Saving Commands - D-Link DGS-3620-52P Manual

xStack® DGS-3620 Series Layer 3 Managed Stackable Gigabit Switch CLI Reference Guide
Chapter 78
config power_saving {state [enable | disable] | length_detection [enable | disable]}
show power_saving
78-1 config power_saving
Description
This command is used to configure the power saving for the system. By default, the power saving
mode is enabled and the length detection mode is disabled. The power saving length detection
function applies to the Gigabit ports with copper media.
The power is saved by the following mechanisms. When the port has no link partner, the port
automatically turns off and wakes up once a second to send a single link pulse. When the port is
turned off, a simple receive energy-detect circuit is continuously monitoring energy on the cable. At
the moment when energy is detected, the port turns on fully per IEEE specification requirements.
The power saving function is performed while no link is detected and it will not affect the port
capabilities while it is link up.
When the port is link up, for shorter cable, the power consumption can be reduced by lowering the
signal amplitude since the signal attenuation is proportional to the cable length. The port will adjust
the power based on cable length and still maintain error free applications from both sides of the
link. This mechanism will only be supported when the hardware supports the cable diagnostics
function.
Format
config power_saving {state [enable | disable] | length_detection [enable | disable]}
Parameters
state - (Optional) Configure the power saving state to enable or disable. The default value is
enable.
enable - Enable the power saving feature.
disable - Disable the power saving feature.
length_detection - Configure the length detection state to enable or disable. The default value is
disable.
enable - Enable the length detection feature.
disable - Disable the length detection feature.
Restrictions
Only Administrator and Operator-level users can issue this command.
Example
To configure power saving:
Power Saving
Commands
859