Chapter 11
| Interface Commands
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◆
Potential conditions which may be listed by the diagnostics are shown by
the legend in the following example. Additional information is provided for
the following test results.
■
OK: Correctly terminated pair
■
ON: Open pair, no link partner
■
IE (Impedance mismatch): Terminating impedance is not in the reference
range.
■
NS (Not Supported): This message is displayed for any Gigabit Ethernet
ports linked up at a speed lower than 1000 Mbps.
■
UN: Unknown Error
Example
Console#show cable-diagnostics interface ethernet 1/24
Cable Diagnostics on interface Ethernet 1/1:
Cable Open with accuracy 0 meters.
Pair A Open, length 2 meters
Pair B Open, length 2 meters
Pair C Short, length 0 meters
Pair D Short, length 0 meters
Last Update 0n 2011-02-16 02:32:56
Console#
Power Savings
power-save
This command enables power savings mode on the specified port. Use the
no
form to disable this feature.
Syntax
[
no
]
power-save
Default Setting
Enabled
Command Mode
Interface Configuration (Ethernet ports 1-22/48)
Command Usage
◆
IEEE 802.3 defines the Ethernet standard and subsequent power
requirements based on cable connections operating at 100 meters.
Enabling power saving mode can reduce power used for cable lengths of
60 meters or less, with more significant reduction for cables of 20 meters
or less, and continue to ensure signal integrity.
◆
Power saving mode only applies to the Gigabit Ethernet ports using
copper media.
◆
Power savings can be enabled on Gigabit Ethernet RJ-45 ports.
