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Understanding Wireless LANs


Training Course Outline

Course Duration:

2 Days

Training Course Description:
The ability to walk around a site and still maintain access to a network for voice and data services is critical to modern competitive business. Wireless mobile communications using Wi-Fi products provide an opportunity for users to gain flexibility and for service providers such as hotels to gain revenue by providing these high value services.

IT professionals must have the knowledge to use the right technology solutions and to be able to recognise the capability and limitations of solutions already installed by others. To successfully install such systems some simple knowledge of radio principles is required. It is important to appreciate the principles of the key modern technology standards and understand the buzz words that surround the technology. To be successful knowledge of Wireless Access Points, Routers, Bridges Repeaters and Hot-Spots is important as well as knowing which to use where and how to make them work effectively in the field.

Experience has shown in practice that although other vendors claim that their products are "plug-and-play", without the right knowledge the products may plug but often do not play. Modern products must work even in environments where other wireless devices exist. This course will provide an understanding of technology and provide attendees with an opportunity to connect, configure and troubleshoot wireless services hands-on. Attendees will learn the effective limits on performance and be able to undertake site surveys to discover effective performance ahead of installation.

Course Objectives

When you have completed this course you will be able to:
  • Plan local mobile services using Wireless technology
  • Describe the difference between the competing standards in use today
  • Configure wireless devices to provide secure services using authentication and encryption
  • Survey a site for delivery of quality mobile services

Prerequisites:
This course assumes attendees already have basic knowledge of data communications, LANs, IP and VoIP systems. No prior knowledge of radio or Wireless systems will be assumed. Delegates can attend these courses to gain the prerequisite knowledge:

Prerequisite courses:
Hands On TCP/IP and Internet Protocols
ICND: Interconnecting Cisco Network Devices
Understanding Voice over IP

Follow on courses:
Wireless LAN Administration
Understanding WiMAX Wireless

Understanding Wireless LANs includes the following modules:

Local Wireless Services

  • Technologies and Terms
  • Key Wireless Standard Options
  • Wireless Architecture
  • Different IEEE standard options
  • Integration with LANs
  • Ad Hoc connection
  • Security
  • WEP, WPA, 802.11i, 802.11x
  • Hands-on Exercise 1: Configuring Ad-hoc Connections
  • In this exercise attendees configure machines to communicate directly point to point

Configuring Access Points and Routers

  • Access Point Components
  • Configuring an Access Point
  • Hands-on Exercise 2: Setting up an infrastructure with Access Points
  • In this exercise attendees will configure a wireless router and an access point to learn about the different options available including SSID, Security options and Channel Allocation

Mobile Quality of Service

  • Radio Principles
  • Planning cells
  • Channel Allocation
  • Physical Services
  • Frequency use
  • Overlapping channels
  • Noise and signal strength
  • Operating Speeds and standards
  • Hands-on Exercise 3: Wireless Performance
  • In this exercise we will identify the throughput and error rate achievable for different configurations deploying different channels and speed options.

Mobile Multimedia

  • Attraction of mobile local telephony
  • Voice and data compared
  • Voice performance profile
  • Quality issues for voice, music and video
  • Hands-on Exercise 4: Mobile Multimedia Services
  • In this exercise we will use wireless services to deliver multimedia and identify the problems in achieving this.

Coverage Service Planning

  • Site Surveys
  • Tools to use
  • How to affect coverage
  • Increasing/reducing range
  • Reducing spill-over into public areas
  • Cell structure planning
  • Bridging and repeating
  • Connecting Portal Services for Hot-spots
  • Testing and troubleshooting
  • Hands-on Exercise 5: Site Survey and Fault Isolation
  • A set of access points will be configured and students will use Netstumbler to view the connected networks and discover other networks near-by. Attendees will measure the coverage parameters and record potential data rates.

Planning A WiFi Service

  • Defining the Service requirements
  • Selecting Routers and Access Points
  • Deploying bridges between buildings
  • Routing and Fire-walling
  • Monitoring and managing the service
  • Course Summary
  • Course Evaluation

 

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