P
OWER
AND
C
OOLING
P
ROBLEMS
A-3
Power and Cooling Problems
If the power indicator does not turn on when the power cord is plugged in,
you may have a problem with the power outlet, power cord, or internal
power supply. However, if the unit powers off after running for a while,
check for loose power connections, power losses or surges at the power
outlet. If you still cannot isolate the problem, the internal power supply may
be defective.
Installation
Verify that all system components have been properly installed. If one or
more components appear to be malfunctioning (such as the power cord or
network cabling), test them in an alternate environment where you are sure
that all the other components are functioning properly.
In-Band Access
You can access the management agent in the switch from anywhere 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 gateway. If you have trouble
establishing a link to the management agent, check to see if 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 the switch has
not been disabled. If it has not been disabled, then check the network cabling
that runs between your remote location and the switch.
Note:
The management agent accepts up to four simultaneous 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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