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Troubleshooting
This section is intended to help the user solve the most common problems on the
ES-5226RS.
Incorrect connections
The switch port can auto-detect straight or crossover cable when the user links
switch with other Ethernet device. The RJ-45 connector should use correct UTP
or STP cable. 10/100Mbps ports use 2 pairs twisted cable and Gigabit 1000T
ports use 4 pairs twisted cable. If the RJ-45 connector is not correctly pinned on
right position then the link will fail. For fiber connection, please notice that fiber
cable mode should match the fiber module.
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 miss-wired cables may cause numerous network collisions and
other network problem, and can seriously impair network performance. A
category 5-cable tester is a recommended tool for every 100Base-T network
installation.