xStack® DES-3528/DES-3552 Series Layer 2 Managed Stackable Fast Ethernet Switch CLI Reference Guide
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DES-3528:admin#config power_saving port 1:1 delete time_range range_2
Command: config power_saving port 1:1 delete time_range range_2
Success.
DES-3528:admin#
config power_saving mode
Purpose
This command is used to configure the power saving state.
Syntax
config power_saving mode {length_detection | link_detection | led | port | hibernation}
[enable | disable]
Description
For the link detection and length detection functions, this will apply to the ports with copper
media.
If the power saving link detection state is enabled, the power is saved by the following
mechanisms:
1. When no links are detected on the port, the port will automatically turn off and will
only wake up the second a single link pulse is sent. While the port is turned off, a
simple energy-detect circuit will continuously monitor energy on the cable. The
moment energy is detected; the port will turn on fully as to the IEEE specification’s
requirements. The power saving function is performed while no link is detected and it
will not affect the port capabilities while the link is up.
2. When a link is detected on the port, for a shorter cable, the power consumption will
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 the cable
length and still maintain error free applications from both sides of the link. This
mechanism is only available using the hardware support cable diagnostics function.
If the power saving state of port is disabled, all power saving schedules of port will not take
effect.
If the power saving state of port LED is disabled, all power saving schedules of port LED will
not take effect.
If the power saving state of system hibernation is disabled, all power saving schedules of
system hibernation will not take effect.
Parameters
length_detection
- (Optional) Specifies the power saving length detection state.
link_detection
- (Optional) Specifies the link detection used.
led
- (Optional) Specifies to configure the power saving state of port LED.
port
- (Optional) Specifies to configure the power saving state of port.
hibernation
- (Optional) Specifies to configure the power saving state of system hibernation.
enable
- Specifies to enable the specific state selected.
disable
- Specifies to disable the specific state selected.
Restrictions
Only Administrator and Operator-level users can issue this command.
Example usage:
To enable the power saving state of port and hibernation: