Amer Networks SRPM24 - Manual (Page 44)

SRPM24
Troubles shooting
Incorrect connections
To link the Managed PoE Midspan switch with other Ethernet device, you should use correct UTP/STP
cable. The link will fail if the RJ-45 connector is not correctly pinned on right position.
„ 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
network installation.
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).
„ 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 (devices) between end nodes. In addition, you should
make sure that your network topology contains no data path loops. Between any two end 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.
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