Chapter 6: Troubleshooting
121
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 “Cable Requirements” on page 28.
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.
A 1000Base connection might require five to ten seconds to
establish a link.
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