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The following is a list of problems you may see
when managing the Switch with suggested courses
of corrective action to take. If you have a problem
which is not listed here and you cannot solve it,
contact your local technical support representative.
LEDs
Power LED does not light:
Check that the power cable is firmly connected to
the device and to the supply outlet.
Check the unit fuse. For information on changing
the fuse, refer to “
Power Supply and Fuse” in
Appendix A
.
On powering-up, the MGMT LED lights yellow:
The unit has failed its Power On Self Test (POST) and
you should contact your supplier for advice.
On powering-up, the MGMT LED flashes yel-
low:
The installed Plug-in Module has failed its Power
On Self Test (POST). Try re-installing the Plug-in
Module, ensuring it is properly seated. If the prob-
lem persists, contact your supplier for advice.
The Plug-in Module Status LED lights yellow:
If the MGMT LED is flashing yellow, the Module
has failed its Power On Self Test; refer to the previ-
ous advice. Otherwise, the Module’s agent software
is not installed correctly. Refer to the User Guide
supplied with the Module.
The Plug-in Module Status LED flashes yellow:
The Module is not recognized. You may need to
download a version of the Switch’s management
agent software that recognizes the Module (refer to
“
Upgrading Software” on page 4-28), or remove
the Module. Contact your supplier for further
advice.
A link is connected and yet the Status LED does
not light:
Check that:
■
All connections are secure
■
Cables are free from damage
■
The devices at both ends of the link are pow-
ered-up
■
The connection uses cross-over cable if you are
linking a 100BASE-TX port with a device which
is MDIX-only