CHAPTER A | Troubleshooting
Power and Cooling Problems
POWER AND COOLING PROBLEMS
If the power indicator does not turn on when t he power c o rd i s plugged in, you
may have a problem with the power outlet, power cord, or internal power
supply. However, if the unit powers off after runn i ng for a while, check for loose
power connections, power losses or surges at the p ower outlet. If you still
cannot isolate the problem, the intern al pow er s uppl y may be defective.
Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning (such as t h e power cor d o r net w or k
cabling), test them in an alternate environment where you are sure that all the
other components are functioning properly.
You can access the management agent in the switch from an ywhere within the
attached network using Telnet, a web browser, or other network management
software tools. However, you must first configure the switch with a valid IP
address, subnet mask, and default gat ew ay. If you have trouble establishing a
link to the management agent, check to s ee i f you have a valid network
connection. Then verify that you entered the correct IP address. Also, be sure
the port through which you are connecting to t he switch has not been
disabled
.
If it has not been disabled, then check the network cabling that r uns bet ween
your remote location and the switch.
NOTE: The management agent accepts up to four simultane ous Telnet
sessions. If the maximum
number
of
sessions already exists, an
additional Telnet connection will not be able to log into the system.
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