SMC Networks VDSL2 - Manual (Page 63)

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, and verify that the fans on the unit are unobstructed and running
prior to shutdown. If you still cannot isolate the problem, then 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, Secure Shell, a web browser, or other
network management software such as SMC EliteView. 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.
Also, note that the switch may be configured to prevent management
access from a connection through the data ports (1-16). Refer to the
Management Guide for detailed information on this configuration option.