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Wireless Networking Handbook
(Publisher: Macmillan Computer Publishing)
Author(s): Jim Geier
ISBN: 156205631x
Publication Date: 09/01/96
CHAPTER 10 Installing a Wireless Network
Wireless networks are advantageous because less cable is installed than with wired networks such as ethernet. Theoretically, then, a wireless network installation should take less time. Actually, installation time depends on how well you have evaluated the environment before embarking on the installation. If you did not perform a site survey as explained in Chapter 8, Designing a Wireless Network, unseen radio frequency interference might wreak havoc on the operation of a newly installed wireless system, causing significant delays in making the system operate effectively. You want to avoid delays when installing the system. A delay will cause you to not meet schedule constraints and will result in decreased productivity of the systems users. Thus if you have not performed a site survey at this point in the project, do it now before pressing on!
The installation of a wireless network requires the following steps:
- 1. Plan the installation.
- 2. Install the components.
- 3. Test the installation.
This chapter covers each of these steps and explains the actions necessary to finalize the project.
Planning the Installation
Before taking components out of the boxes, installing network interface cards, and setting up antennas, spend some time planning the installation. Planning will significantly reduce the number of problems that may arise. Planning the installation consists of the following actions:
- 1. Developing an installation plan
- 2. Coordinating the installation
Developing an Installation Plan
Overall, an installation plan explains how to install the network. Developing an installation plan helps you focus on what needs to be installed. It also provides instructions for installers who might not have been involved with the design of the network and, therefore, do not have first-hand knowledge of the networks configuration. Figure 10.1 identifies the major components of a network installation plan. The project team should assign someone as installation manager who will develop the plan and be responsible for the installation.
Figure 10.1 The contents of an installation plan.
Points of Contact
The plan should indicate someone as the central point of contact if issues arise. This person should work in the facility where the installation will take place, such as the customer representative who has been active in the project from the beginning. Be sure the plan identifies who installers should contact to obtain access to restricted areas and locked rooms. Also indicate who can answer questions regarding the installation procedures and network configuration.
Safety Tips
When installing network components, accidents are less likely to happen if you incorporate good safety practices and remind people about them. You should list these safety tips in your installation plan and stress them at your preinstallation meeting:
- Insist that no installers work aloneuse the buddy system. If a severe accident occurs, the other person can get help.
- Recommend that installers remove rings and necklaces while installing hardware components. A metal necklace can dangle into a live electrical circuit (or one that is not connected to a power source, but is still energized by charged capacitors) and provide the basis for electrical shock. Rings also conduct electricity or can catch on something and keep you from removing your hand from a computer or component.
- Use proper ladders and safety harnesses if placing antennas on towers or rooftops. There is no reason to take high elevation risks.
- Wear eye protection when using saws or drills.
- Check local OSHA (Occupational Safety and Health Administration) requirements.
Installation Procedures
The plan should clearly describe the procedures for installing components. In some cases, you can simply refer installers to the manufacturers instructions. Otherwise, write at least the major steps involved in installing each component. You can use the procedures for installing and testing the network outlined in the next sections as a basis.
Tools
Be sure to identify the tools necessary to complete the job. If you have ever constructed a Barbie house, built a patio cover, or worked on a car engine, you certainly realize the need for having the right tools. Not having the proper tools results in time delays looking for the tools or rework needed because you used the wrong tools. The following are tools the installers may require:
- Wireless installation tools and utilities assist in planning the location of access points and testing wireless connections. The tools are generally available from the applicable wireless product vendor.
- Two-way radios provide communications among the installation team, especially when spread over a large geographical area.
- Flashlights are helpful when installing cables above ceilings.
- Ladders provide access to ceilings and rooftops.
- Screwdrivers, wire cutters/strippers, crimping tools, and drills help install hardware.
- Specific test equipment verifies the network installation.
Reference to Design Documentation
The installation will probably require use of design documentation to better understand the overall network configuration. Be sure to indicate the existence of the documentation and how to obtain it.
Schedule
Create a schedule that identifies when to perform each of the installation activities. This helps keep the installation process on schedule. Unfortunately, the best time to install network components is during down-time, such as evening hours and weekends, minimizing disturbances. Hospitals and warehouses never close, but you should plan the installation activities for when the organization is least active.
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