Chapter 2 Installation

Installation Guidelines

Heavy Overlap Coverage Option

By arranging the access points so the overlap in coverage area is nearly maximized, a large number of mobile stations can be supported in the same wireless infrastructure (see Figure 2-3). However, devices in overlapping coverage areas on the same frequency will detect adjacent cell traffic and delay transmissions that would cause collisions. This configuration reduces the aggregate radio system throughput. Heavy cell overlap is not recommended for maximum system throughput.

Because of the redundancy in coverage overlap, network access is not lost if an access point fails. Upon failure of the access point, the station automatically roams to an operational access point. With this architecture, each device in the RF network must be configured with the same SSID to provide the roaming capability.

Figure 2-3 Heavy Overlap Coverage Option

Wired LAN

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Site Surveys

Because of differences in component configuration, placement, and physical environment, every network application is a unique installation. Before installing multiple access points, you should perform a site survey to determine the optimum utilization 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 is achieved at the lowest workable data rate. A decrease in receiver threshold sensitivity occurs as the radio data increases.

•Antenna type and placement – Proper antenna configuration is a critical factor in maximizing radio range. As a general rule, range increases in proportion to antenna height.

•Physical environment – Clear or open areas provide better radio range than closed or filled areas. Also, the less cluttered the work environment, the greater the range.

•Obstructions – A physical obstruction such as metal shelving or a steel pillar can hinder performance of wireless devices. Avoid locating the devices in a location where there is a metal barrier between the sending and receiving antennas.

Cisco Aironet Access Point Hardware Installation Guide

 

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Cisco Systems 340, 350 manual Heavy Overlap Coverage Option
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340, 350 specifications

Cisco Systems has long been a prominent player in the realm of networking and communications technology. Among its comprehensive product lineup, the Cisco 350 and 340 series of switches stand out as reliable solutions for businesses looking to enhance their network performance.

The Cisco 350 series, often referred to for its accessibility and performance, is designed for small to medium-sized enterprises. It offers a versatile set of features that cater to various networking needs. Key characteristics include a range of models supporting 10/100/1000 Mbps Ethernet ports, which allow for high-speed connectivity. The series also supports PoE (Power over Ethernet) capabilities, enabling devices such as IP phones and wireless access points to receive power directly through the network connection. This not only simplifies deployment but also minimizes the need for additional power supplies.

Cisco's Intelligent Prosumer Networking features are incorporated into the 350 series, enabling enhanced security and management capabilities. The switches provide Layer 2 and Layer 3 functionality for routing and switching, allowing users to segment their networks efficiently and reduce broadcast traffic. Additionally, Quality of Service (QoS) features prioritize critical applications, ensuring a smooth user experience without interruptions.

On the other side, the Cisco 340 series builds on similar performance foundations but targets environments requiring even more robust capabilities. It includes advanced features such as StackWise technology, which provides scalability and redundancy. This allows multiple switches to operate as a single unit, improving network resilience and simplifying management.

Both the 350 and 340 series incorporate Cisco's Smart Group technology, facilitating streamlined configuration and easier monitoring of network performance. Furthermore, with Cisco DNA (Digital Network Architecture) capabilities, these switches can support automation and insights through analytics, enabling IT teams to respond rapidly to network demands.

In terms of security, both series are equipped with advanced features that prevent unauthorized access and support secure management protocols. They include features like Access Control Lists (ACLs) and storm control, further protecting network integrity.

Overall, whether you opt for the Cisco 350 or 340 series, you will benefit from a robust set of features designed for modern networking challenges, along with the innovation and reliability that Cisco Systems is known for. These switches provide scalable, efficient, and secure solutions to support business growth and operational efficiency.
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