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Cisco ASR 901S Series にも：トラブルシューティング (4 ページ)

Preparing to Install the Router

All personnel involved in the installation of the router including installers, engineers, and supervisors should

participate in the preparation of a Method of Procedure (MOP) for approval by the customer.

Site Environment

Every network application is a unique installation. Before installing the Cisco ASR 901S Series Aggregation

Services Router, you should perform a site survey to determine the optimum use of networking components

and to maximize range, coverage, and network performance.

Consider the following operating and environmental conditions when performing a site survey:

• Data rates—Sensitivity and range are inversely proportional to data bit rates. The maximum radio range

• Antenna type and placement—Proper antenna configuration is a critical factor in maximizing radio

• Physical environment—Clear or open areas provide better radio range than closed or filled areas.

• Obstructions—Physical obstructions such as buildings, trees, or hills can hinder performance of wireless

Part of site preparation includes reviewing installation plans or method of procedures (MOPs). An example

of a MOP that includes pre-installation checklist of tasks, considerations to address and agree upon before

proceeding with the installation, is as follows:

• Read this hardware installation guide.

• Assign personnel.

• Determine protection requirements for personnel, equipment, and tools.

• Evaluate potential hazards that may affect service.

• Schedule time for installation.

• Determine space requirements.

• Determine power requirements.

• Identify required procedures or tests.

• Make a preliminary plan that locates each Cisco ASR 901S Series Aggregation Services Router that

• Verify the list of replaceable parts for installation (screws, bolts, washers, and so on).

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is achieved at the lowest workable data rate. A decrease in receiver sensitivity occurs as the radio data

increases.

range. As a general rule, range increases in proportion to antenna height. However, do not place the

antenna higher than necessary, because the extra height also increases potential interference from other

unlicensed radio systems and decreases the wireless coverage from the ground.

Always follow ESD-prevention procedures described in

on page 3

to avoid damage to equipment. Damage from static discharge can cause immediate or

intermittent equipment failure.

devices. Avoid locating the devices in a location where there is an obstruction between the sending and

receiving antennas.

you plan to install.

Cisco ASR 901S Series Aggregation Services Router Hardware Installation Guide

Site Environment

Preventing Electrostatic Discharge Damage,