Enterasys Networks V2H124-24P manual Cable Labeling and Connection Records

4 Making Network Connections

Table 4-4. Maximum 1000BASE-LH Gigabit Ethernet Cable Length

Fiber Size	Fiber Bandwidth	Maximum Cable Length	Connector
9/125 micron	N/A	2 m - 70 km (7 ft - 43.5 miles)	LC
single-mode fiber

100 Mbps Fast Ethernet Collision Domain

Table 4-5. Maximum Fast Ethernet Cable Lengths

Type	Cable Type	Max. Cable Length	Connector
100BASE-TX	Category 5 or better 100-ohm UTP or STP	100 m (328 ft)	RJ-45

10 Mbps Ethernet Collision Domain

Table 4-6. Maximum Ethernet Cable Length

Cable Type	Maximum Length	Connector
Twisted Pair, Category 3 or better 100-ohm UTP	100 m (328 ft)	RJ-45

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.

•Note the length of each cable and the maximum cable length supported by the switch ports.

•For ease of understanding, use a location-based key when assigning prefixes to your cable labeling.

•Use sequential numbers for cables that originate from the same equipment.

•Differentiate between racks by naming accordingly.

•Label each separate piece of equipment.

•Display a copy of your equipment map, including keys to all abbreviations at each equipment rack.

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