ZyXEL Communications port unmanaged fast ethernet switch 3.1 Improper Network Cabling and Topology

Chapter 3 Troubleshooting

Improper network cabling or topology setup is a common cause of poor network performance or even network failure.

Figure 13 Troubleshooting Improper Network Cabling and Topology

PROBLEM	CORRECTIVE ACTION
Faulty cables	Using faulty network cables may affect data rates and have an impact on your network
	performance. Replace with new standard network cables.

Non-standard	Non-standard cables may increase the number of network collisions and cause other
network cables	network problems that affect your network performance. Refer to Section 2.2.3 on page 11
	for more information on network cable types.

Cabling Length	If you use longer cables than are needed, transmission quality may be affected.
	The network cables should not be longer than the limit of 100 meters.

Too many hubs	Too many hubs (or repeaters) between the connected computers in the network may
between the	increase the number of network collision or other network problems. Remove unnecessary
computers in	hubs from the network.
the network

A loop in the	A data path loop forms when there is more than one path or route between two networked
data path	computers. This results in broadcast storms that will severely affect your network
	performance. Make sure there are no loops in your network topology.