Twisted Pair Ports - Allied Telesis AT-IE300-12GP Installation Manual

Twisted Pair Ports

Problem: The switch is powered on and forwarding traffic, but all the port
LEDs are off.
Solutions: The port LEDs may have been turned off with the
ECOFRIENDLY LED command in the AlliedWare Plus operating system.
To turn on the LEDs, establish a management session with the unit and
issue the NO ECOFRIENDLY LED command in the Global Configuration
mode. The default setting for the LEDs is on.
Problem: A twisted pair port on the switch is connected to a network
device but the port's LINK/ACT LED is off.
Solutions: The port is unable to establish a link to a network device. Try
the following:
Verify that the port is connected to the correct twisted pair cable.

This is to eliminate the possibility that the port is connected to the
wrong network device.
Verify that the network device connected to the twisted pair port is

powered on and is operating properly.
Verify that the network cable is securely connected to the ports on

the switch and remote network device.
Try connecting another network device to the twisted pair port with

a different cable. If the twisted pair port is able to establish a link,
then the problem is with the cable or the other network device.
Verify that the twisted pair cable does not exceed 100 meters (328

feet).
Verify that you are using the appropriate category of twisted pair

cable. Refer to Table 1 on page 25 and Table 3 on page 27.
Use the switch's management software to verify that the port is

enabled.
If the remote network device is a managed device, use its

management firmware to verify that its port is enabled.
Note
A 1000Base connection might require five to ten seconds to
establish a link.
Problem: Network performance between a twisted pair port on the switch
and a network device is slow.
Solution: There might be a duplex mode mismatch between the port and
the network device. This can occur when a twisted pair port using Auto-
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