American Fibertek SM10p-PoE - Manual (Page 111)

¢ Improper Network Topologies
It is important to make sure that you have a valid network topology. Common topology
faults include excessive cable length and too many repeaters (hubs) between end nodes.
In addition, you should make sure that your network topology contains no data
path
loops. Between any two ends nodes, there should be only one active cabling path at any
time. Data path loops will cause broadcast storms that will severely impact your network
performance.
Diagnosing LED Indicators
The switch can be easily monitored through panel indicators, which describes common
problems user may encounter and where user can find possible solutions,
to assist in identifying problems.
If the power indicator does not light on when the power cord is plugged in, you may have
a problem with power outlet, or power cord. However, if the Switch
powers off after running for a while; check for loose power connections, power losses, or surges at
power outlet. If the problem still cannot be resolved, please contact the local
dealer for assistance.
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