Extreme Networks E4G Series, Руководство по установке оборудования

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Chapter 2: Site Preparation
E4G Series Routers Hardware Installation Guide
38
Cabling Standards
Extreme Networks recommends using the Building Industry Consulting Service International (BICSI)
Registered Communications Distribution Designer (RCDD), which is globally recognized as a standard
in site planning and cabling. For information, go to:
http://www.bicsi.org
Cable Labeling and Record Keeping
A reliable cable labeling system is essential when planning and installing a network. Maintaining
accurate records helps you to:
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Relocate devices easily.
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Make changes quickly.
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Isolate faults in the distribution system.
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Locate the opposite end of any cable.
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Know the types of network devices that your cabling infrastructure can support.
Follow these guidelines when setting up a cable labeling system suitable for your installation:
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Identify cables by securely attaching labels to all cable ends.
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Assign a unique block of sequential numbers to the group of cables that run between each pair of
equipment locations.
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Assign a unique identification number to each equipment rack.
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Identify all equipment locations by labeling the front panel of your Extreme Networks equipment
and other hardware.
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Keep accurate and current cable identification records.
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Post records near each equipment rack. For each cable drop, include information about the cable
source, destination, and jumper location.
Installing Cable
When you connect cable to your network equipment:
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Examine cable for cuts, bends, and nicks.
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Support cable using a cable manager that is mounted above connectors to avoid unnecessary weight
on the cable bundles.
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Use cable managers to route cable bundles to the left and right of the network equipment to
maximize accessibility to the connectors. (See
Figure 13 and Figure 14 .)
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Provide enough slack, approximately 2 to 3 inches (5.08 to 7.62 cm), to provide proper strain relief.
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Bundle cable using hook-and-loop straps to avoid injuring cables.
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If you build your own cable, be sure that connectors are properly crimped.
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When installing a patch panel using twisted pair wiring, untwist no more than 1 inch (2.54 cm) of
the cable to avoid radio frequency (RF) interference.
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Discharge the RJ-45 Ethernet cable before plugging it into a port on the router.