Comnet CWGE2FE8MSPOE, Installation And Operation Manual

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Problem Solving
This section is intended to help solve the most common problems on the PoE Managed
Switch.
Incorrect connections
The switch port can automatically detect straight or crossover cable when you link switch
with other Ethernet device. For the RJ-45 connector should use correct UTP or STP cable,
10/100Mbps port use 2-pairs twisted cable and Gigabit 1000T port 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 and fiber module should be match.
 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 5e/6-cable
tester is a recommended tool for network installation.
RJ-45 ports: Use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for
RJ-45 connections. Also be sure that the length of any twisted-pair connection does not
exceed 100 meters (328 feet). Gigabit port should use Cat-5e or cat-6 cable for 1000Mbps
connections. The length does not exceed 100 meters.