AirLive Ether-FSH2422W - Manual (Page 49)

AirLive Ether-FSH2422W User’s Manual
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Chapter 5: Troubleshooting
This section is intended to help the user solve the most common problems on the Ether-FSH2422W.
5-1 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.
„ Improper Network Topologies
It is important to make sure that users have a valid network topology. Common
topology faults include excessive cable length and too many repeaters (hubs) between
end nodes. In addition, the user should make sure that the 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 the network performance.