User's Manual

Making Network Connections

4-6

100 Mbps Fast Ethernet Collision Domain

10 Mbps Ethernet Collision Domain

Cable Labeling and Connection Records

When planning a network installation, it is essential to label the opposing ends of

cables and to record where each cable is connected. Doing so will enable you to

easily locate inter-connected devices, isolate faults and change your topology

without need for unnecessary time consumption.

To best manage the physical implementations of your network, follow these

guidelines:

• Clearly label the opposing ends of each cable.

• Using your building’s floor plans, draw a map of the location of all

network-connected equipment. For each piece of equipment, identify the devices

to which it is connected.

Table 4-3 Maximum 1000BASE-LX Fiber Optic Cable Length

Fiber Diameter Fiber Bandwidth Cable Length Range Connector

9/125 micron single-mode fiber N/A 2 m - 5 km

(7 ft - 3.2 miles)

Table 4-4 Maximum 1000BASE-ZX Fiber Optic Cable Length

Fiber Diameter Fiber Bandwidth Cable Length Range Connector

9/125 micron single-mode fiber N/A 70* - 100 km

(43.5 - 62.1 miles)

* For link spans exceeding 70 km, you may need to use premium single mode fiber or dispersion

shifted single mode fiber

Table 4-5 Maximum Fast Ethernet Cable Length

Type Cable Type Maximum Cable Length Connector

100BASE-TX Category 5 or better 100-ohm

UTP or STP

100 m (328 ft) RJ-45

Table 4-6 Maximum Ethernet Cable Length

Type Cable Type Maximum Length

Connector

10BASE-T Categories 3, 4, 5 or better

100-ohm UTP

100 m (328 ft) RJ-45