Extreme Networks EAS 200-24p Switch, Manual

Page: 630 / 908

Chapter 45: Power Saving Command List
Extreme Networks EAS 200-24p Switch CLI Manual
630
config power_saving
Description
The command will set the global state of power saving. By default, the power saving mode is enabled.
The power saving function applies to the port with copper media. 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. While 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 as IEEE
specification’s requirements. The power saving function is performed while no link is detected and it
will not effect the port capabilities while it’s 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 side of the link. This
mechanism will only be supported when hardware support cable diagnostics function.
Format
config power_saving {state [enable | disable] | length_detection [enable |
disable]} (1)
Parameters
●
state - (Optional) Enable or disable the power saving function. The default state is enabled.
●
enable - Specifies that the power saving function will be enabled.
●
disable - Specifies that the power saving function will be disabled.
●
length_detection - (Optional) Enable or disable the length detection function. The default state is
disabled.
●
enable - Specifies that the length detection function will be enabled.
●
disable - Specifies that the length detection function will be disabled.
Restrictions
Only Administrator and Operator-level users can issue this command.
Example
To enable the power saving function:
EAS 200-24p:admin# config power_saving state enable
Command: config power_saving state enable
Success.
EAS 200-24p:admin#