Troubleshooting
5
This section is intended to help solve the most common issues with the
Micro-SwitchPoE/5
Incorrect connections
Every port on this switch can automatically detect either straight or crossover cables when
(depending on the device). Choose the appropriate cable to connect between the units.
The RJ-45 connector should use correct UTP or STP cable, 10/100Mbps port use 2-pairs
twisted cable. If th RJ-45 connector is not correctly pinned then the link will fail.
you link it with other Ethernet devices but other devices may demand a specific cable type
Faulty or loose cables
Look for loose or obviously faulty connections. If they appear to be OK, make sure the
connections are snug. If that does not correct the problem, try a different cable.
Non-standard cables
Non-standard and miswired cables may cause numerous network collisions and other
network problems, and can seriously impair network performance. A cable tester is the
recommended tool for network installation.
RJ-45 ports:
Use unshielded twisted-pair (UTP) or shield twisted-pair (STP) cable for
RJ-45 connections: 100
Category 3, 4 or 5 cable for 10Mbps connections, 100
Ω
Ω
Category 5 cable for 100Mpbs connections, or 100
Category 5e above cable for
Ω
/
1000Mbps connections. Also be sure that length of any twisted-pair connection does
not exceed 100 meters (328 feet). We suggest using Category 5e cable when connection
to power a device.
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
To assist in identifying problems, the switch can be easily monitored through panel
indicators, which describe common problems the user may encounter and where the user
can find possible solutions. If the LED display detection isn’t correct, please unplug then
plug in the cable again.
If the power indicator does not light when the power cord in plugged in, you may have a
problem with the power outlet or power connections, power losses, or surges at power
outlet. If the problem still cannot be resolved, please contact the local dealer for assistance.
