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STEP 3 Select the LAG to be configured, and click Edit .
STEP 4 Enter the values for the following fields:
Operational Status—Displays the following:
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Status—Whether the LAG is currently operating .
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LAG Speed—Displays the current speed at which the LAG is operating .
Flow Control—Whether flow control is enabled on the LAG .
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Port List—Move those ports that are to be assigned to the LAG from the
Port List to the LAG Port Member list . Up to eight ports per static LAG can
be assigned, and 16 ports can be assigned to a dynamic LAG .
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LAG Mode—Displays whether the LAG is up or down .
Suspended LAG—Select to reactivate the LAG .
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LACP—Select to enable LACP on the selected LAG . This makes it a dynamic
LAG . This field can only be enabled after moving a port to the LAG in the
next field .
Protected LAG—Select to make the LAG a protected port for Layer 2
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isolation . See the Port Configuration description in Setting Basic Port
Configuration for details regarding protected ports and LAGs .
Auto Negotiation—Select to enable auto-negotiation on the LAG . Auto-
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negotiation is a protocol between two link partners that enables a LAG to
advertise its transmission speed and flow control to its partner (the Flow
Control default is disabled) . It is recommended to keep auto-negotiation
enabled on both sides of an aggregate link, or disabled on both sides,
while ensuring that link speeds are identical .
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Port Speed—Configure the speed of the LAG . The port types determine
the available speeds . You can designate this field only when port auto-
negotiation is disabled .
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Auto Advertisement—Select the capabilities to be advertised by the LAG .
The options are as follows:
Max Capability—All LAG speeds and both duplex modes are available .
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10 Full Duplex—The LAG advertises a 10 Mbps speed and the mode is full
duplex .
100 Full Duplex—The LAG advertises a 100 Mbps speed and the mode is
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full duplex .
1000 Full Duplex—The LAG advertises a 1000 Mbps speed and the mode
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is full duplex .
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Flow Control—Set Flow Control to either Enable or Disable or Auto-
Negotiation .
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Description—Enter the LAG name or a comment .
STEP 5 Click Apply . LAG membership is saved to the Running Configuration file .
Green Ethernet
This section describes the Green Ethernet feature that is designed to save
power on the device .
Green Ethernet is a common name for a set of features that is designed to be
environmentally friendly, and to reduce the power consumption of a device .
Green Ethernet is different from EEE in that Green Ethernet energy-detect is
enabled on all devices where only the gigabyte ports are enable with EEE .
The Green Ethernet feature can reduce overall power usage in the following ways:
•
Short-Reach Mode—This feature provides for power savings on a short
length of cable . After cable length is analyzed, the power usage is adjusted
for various cable lengths . If the cable is shorter than 50 meters, the device
uses less power to send frames over the cable, thus saving energy . This mode
is only supported on RJ45 GE ports; it does not apply to Combo ports .
This mode is globally disabled by default . It cannot be enabled if EEE mode
is enabled (see below) .
802 . 3 Energy Efficient Ethernet (EEE)—EEE reduces power consumption
when there is no traffic on the port . See Energy Efficient Ethernet Feature for
more information .
EEE is enabled globally by default . On a given port, if EEE is enabled, short
reach mode will be disabled . If Short Reach Mode is enabled, EEE is grayed out .
These modes are configured per port, without taking into account the LAG
membership of the ports .
Power savings, current power consumption and cumulative energy saved can
be monitored . The total amount of saved energy can be viewed as a percentage
of the power that would have been consumed by the physical interfaces had
they not been running in Green Ethernet mode .
The saved energy displayed is only related to Green Ethernet . The amount of
energy saved by EEE is not displayed .
Chapter 5 Port Management
18
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