Table 120: Green Ethernet Status Fields
Field
Description
Estimated Energy Savings
The estimated cumulative energy saved on the device (Watts times hours)
because of the Green Ethernet feature.
Estimated Power Savings
The estimated percentage of power saved on all ports. For example, 10% means
that the device required 10% less power than it would have required if the Green
Ethernet feature had not been present.
Current Power Consumption
The estimated power consumption by all ports.
Unit
The device's Unit ID.
Energy-Detect
Whether Energy Detect mode is present on the device. When the Energy Detect
mode is enabled and a port link is down, the
automatically goes down for a
short period of time and then wakes up to check link pulses. This mode reduces
power consumption on the port when no link partner is present.
Short-Reach
Whether the Short-Reach cable mode is present on the device. When present
and enabled, short-reach cable mode performs a cable test when the port link is
up. If the cable that connects the port to its link partner has a length less than
10m, PHYs are placed in low-power mode (nominal power).
EEE
Whether EEE (Energy Efficient Ethernet) is present on the device. EEE enables
ports to enter a low-power mode to reduce power consumption during periods
of low link utilization. EEE is defined by IEEE 802.3az. EEE enables both the send
and receive sides of the link to disable some functionality for power savings
when the link is lightly loaded.
LPI-History
Whether the device is able to provide historical data about the amount of time it
has spent in LPI (low-power idle) mode.
LLDP-Cap-Exchg
Whether the device is able to exchange information about its power capabilities
with link partners by transmitting information in
data units.
Pwr-Usg-Est
Whether the device is able to provide estimates of its power consumption.
Green Ethernet Configuration
For platforms that include Green Energy features, the Green Ethernet Configuration page is used to
configure the global settings for the EEE (Energy Efficient Ethernet) settings on the device.
To access this page, click
System
>
Advanced Configuration
>
Green Ethernet
>
Configuration
in the
navigation menu.
Table 121: Green Ethernet Configuration Fields
Field
Description
EEE LPI History Sampling
Interval
The amount of time to wait between collecting LPI (Low-Power Idle) samples on
the device.
EEE LPI History Maximum
The number of LPI samples to store in the buffer.
EEE Low Power Idle
The administrative mode of EEE LPI on the device. When enabled, the ports can
enter a low-power mode to reduce power consumption during periods of low
link utilization.
Configuring System Information
ExtremeSwitching 200 Series: Administration Guide
135