Allied Telesis AT-MCF2300 - Manual (Page 147)

AT-MCF2000 Media Converter Series Installation Guide
Section II: Installation 147
Problem 4: The Link LED for the twisted pair port in a channel is off, but
the Link LED for the fiber optic port is on or blinking.
Solution: The twisted pair port is unable to establish a link to a network
device. Try the following:
❒
Verify that the network device connected to the twisted pair port is
powered on and is operating properly.
❒
Verify that the twisted pair cable is securely connected to the port on
the media converter channel and to the port on the remote network
device.
❒
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, such as a powered off 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.
❒
If you installed the optional management module in the chassis, use
the management software to verify that the port is enabled.
Problem 5: The Link LED of the fiber optic port in a channel is off, but the
Link LED of the twisted pair port is on or blinking.
Solution: The fiber optic port is unable to establish a link to a network
device. Try the following:
❒
Verify that the network device connected to the fiber optic port is
operating properly.
❒
Verify that the fiber optic cable is securely connected to the port on the
media converter channel and to the port on the remote network device.
❒
For the AT-MCF2032SP Module, check to be sure that the SFP
module is fully inserted in the slot.
❒
Verify that the operating specifications of the fiber optic ports in the
channel and on the remote network device are compatible. For the port
specifications, refer to “100Base-FX Fiber Optic Ports” on page 175.
❒
Verify that the correct type of fiber optic cabling is being used. For the
specifications, refer to “Fiber Optic Ports” on page 36 or “100Base-FX
Fiber Optic Ports” on page 175.
❒
Verify that the port is connected to the correct fiber optic cable. This is
to eliminate the possibility that the port is connected to the wrong
remote network device, such as a powered off device. For background
information, refer to “Media Converter Channels” on page 34.
❒
Try connecting another network device to the fiber optic port using a
different cable. If the port is able to establish a link, then the problem is
with the cable or with the other network device.