Allied Telesis AT-8324 - Manual (Page 70)

Troubleshooting
70
Common Problems
This section lists common possible sources of error and actions
required to correct them.
Link /Activity
LED on Any
Port is OFF
This can indicate:
# A loose data cable.
# The device at the other end of the connection is turned OFF.
# The data cable is not wired correctly (straight/crossed) for the
device.
# The network administrator manually disabled the port
through the software.
# The port’s selected transmission mode does not match that of
the attached device.
Perform the following steps in sequence; you need not proceed to
the next step if the problem is resolved:
1. Make sure the data cables are secure.
2. Make sure the device at the end of the connection is turned ON.
3. Make sure the data cable is wired correctly (straight/crossed) for
the device.
4. Logon to Omega if you can and check the port status ( Port
status and configuration><port number> menu).
If the port is Enabled, make sure the transmission speed
matches that of the connected device (auto-negotiating, full-
or half-duplex).
Refer to the AT-S25 Management Software User’s Guide to
check that the port is
Disabled . If the port is Disabled ,
someone has manually disabled the port through the
software for a specific reason. Verify that the reason no longer
exists before you enable this port (
Port status and
configuration ).
5. Contact Allied Telesyn’s Technical Support for help.