Corso Cisco Wireless LANs - Contenuti dettagliati

@ 25.08.2005

Module 1: Introduction to Wireless LANs
Module 2: 802.11 (a,b,g) and Network Interface Cards
Module 3: Wireless Radio Technology
Module 4: Wireless Topologies
Module 5: Access Points
Module 6: Bridges
Module 7: Antennas
Module 8: Security
Module 9: Application Design and Site Survey Prep
Module 10: Site Survey
Module 11: Troubleshooting Management, Monitoring, and Diagnostics
Module 12: Emerging Technologies

Module 1: Introduction to Wireless LANs

1.1 Introduction to Wireless LANs

1.1.1 What is a wireless LAN?

1.1.2 No more wires?

1.1.3 Why wireless?

1.1.4 Evolution of wireless LANs

1.2 Networking Media

1.2.1 Physical layer media

1.2.2 STP

1.2.3 UTP

1.2.4 Coaxial cable

1.2.5 Optical fiber

1.2.6 Atmosphere: the wireless medium

1.2.7 Media installation

1.3 Wireless Technologies

1.3.1 Overview

1.3.2 Digital wireless and cellular

1.4 Components and Topologies

1.4.1 Components overview

1.4.2 Client adapters

1.4.3 Access points

1.4.4 Bridges

1.4.5 Antennas

1.4.6 Cables and accessories

1.4.7 802.11 enabled devices

1.4.8 Consumer wireless products

1.4.9 Wireless LAN Topologies

1.5 Wireless LAN Market

1.5.1 Implications

1.5.2 WLAN growth and applications

1.5.3 Market requirements

1.6 Challenges and Issues

1.6.1 Radio signal interference and degradation

1.6.2 Power management

1.6.3 Interoperability

1.6.4 Network security

1.6.5 Reliability and connectivity

1.6.6 Installation and site design issues

1.6.7 Health issues

1.6.8 Future directions

Module 2: 802.11 (a,b,g) and Network Interface Cards

2.1 802.11 Standards

2.1.1 Overview

2.1.2 IEEE and 802.11

2.1.3 IEEE 802.2 LLC review

2.1.4 Wireless LAN general description

2.1.5 Logical architecture

2.2 802.11 MAC Layer

2.2.1 MAC services

2.2.2 MAC frame structure, architecture, and operation

2.2.3 Carrier-sense mechanism, MAC-level acknowledgements, and interframe spaces

2.3 Physical Layer (PHY)

2.3.1 Scope and functions

2.3.2 IEEE 802.11b (High–Rate) DSSS PHY specification

2.3.3 802.11b modulation

2.3.4 IEEE 802.11a PHY specification

2.3.5 IEEE 802.11g PHY specification

2.3.6 FHSS and Infrared (IR) PHY specifications

2.4 Client Adapters

2.4.1 Introduction

2.4.2 Parts of the client adapter

2.4.3 Driver types and client support

2.4.4 Network configurations using the client adapters

2.5 Aironet Client Utility (ACU)

2.5.1 Overview

2.5.2 Installation

2.5.3 Create and select profiles

2.5.4 Edit, import, and export profiles

2.5.5 Manage profiles

2.5.6 Configure the client adapter

2.5.7 Aironet Client monitor (ACM)

2.5.8 Configure the client IP address

2.6 ACU Monitoring and Troubleshooting Tools

2.6.1 Overview

2.6.2 Status and statistics

2.6.3 Cisco WLAN troubleshooting

2.6.4 Survey and Link Test Tool

2.6.5 Link Status Meter

Module 3: Wireless Radio Technology

3.1 Waves

3.1.1 Overview of waves

3.1.2 Sine waves

3.1.3 Analog to digital conversion

3.2 Mathematics for Studying Radio

3.2.1 Watts

3.2.2 Decibels

3.2.3 Decibel references

3.3 Electromagnetic (EM) Waves

3.3.1 Basics of EM waves

3.3.2 EM spectrum chart

3.3.3 Fourier synthesis

3.3.4 Spectrum uses

3.4 Signals

3.4.1 Viewing signals in time

3.4.2 Viewing signals in frequency

3.4.3 Signals in time and frequency

3.4.4 Noise in time and frequency

3.5 Modulation Techniques

3.5.1 Carrier frequency

3.5.2 Basic modulation techniques

3.5.3 FHSS

3.5.4 DSSS

3.5.5 OFDM

3.6 Multiple Access and Bandwidth

3.6.1 Multiple access to shared medium

3.6.2 WLAN DSSS and CSMA/CA

3.6.3 Bandwidth

3.7 Radio Wave Propagation

3.7.1 Propagation of RF

3.7.2 Refraction

3.7.3 Reflection

3.7.4 Diffraction and scattering

3.7.5 Multipath

3.7.6 Path-loss

Module 4: Wireless Topologies

4.1 Components

4.1.1 Laptops and workstations

4.1.2 Mobile computers, PDAs, and barcode readers

4.1.3 Clients and adapters

4.1.4 Access points and bridges

4.1.5 Antennas

4.1.6 Ethernet and wired LANs

4.2 WLAN Topologies

4.2.1 Modularity

4.2.2 WLAN categories

4.2.3 Local area networks (LAN)

4.2.4 Wireless repeater

4.2.5 System redundancy and load balancing

4.2.6 Roaming

4.2.7 Scalability

4.3 Channel Setup

4.3.1 Overview

4.3.2 Access point coverage and comparison

4.3.3 Multirate implementation

4.3.4 Channel usage and interference

4.4 Bridge Topologies

4.4.1 Root modes

4.4.2 Point-to-point configuration

4.4.3 Point-to-multipoint configuration

4.4.4 Distance limitations

4.4.5 Bandwidth

4.5 Sample Topologies

4.5.1 Basic topologies

4.5.2 Campus topologies

4.5.3 WLAN addition to AVVID

4.6 VLAN, QoS, and Proxy Mobile IP

4.6.1 VLAN features

4.6.2 Quality of Service (QoS) feature

4.6.3 eDCF

4.6.4 Proxy mobile IP

Module 5: Access Points

5.1 Access Point Connection

5.1.1 Introduction

5.1.2 Radio upgrade

5.1.3 Cable and power the AP

5.1.4 LED Indicators

5.1.5 Connecting to the AP

5.1.6 Reset the AP

5.2 Basic Configuration

5.2.1 Configure IP address and SSID via IPSU

5.2.2 Navigating the GUI

5.2.3 Configure basic settings via GUI

5.2.4 Navigating the CLI

5.2.5 Configure basic settings via CLI

5.3 Verify AP Operation

5.3.1 Overview

5.3.2 Summary status (HOME) page

5.3.3 Network map

5.3.4 Associations

5.3.5 ACM and ACU

5.4 Network Interface Configuration

5.4.1 Overview

5.4.2 IP address

5.4.3 Configure the FastEthernet interface

5.4.4 Configure radio interfaces via GUI

5.4.5 Configure radio interfaces through the IOS CLI

5.4.6 Verify radio status

5.4.7 Carrier busy test

5.4.8 Debugging the radio

5.5 Configure Services

5.5.1 Overview

5.5.2 Telnet/SSH

5.5.3 Hot standby

5.5.4 CDP

5.5.5 DNS

5.5.6 HTTP

5.5.7 Proxy Mobile IP

5.5.8 QoS

5.5.9 NTP

5.6 Wireless Services

5.6.1 Overview

5.6.2 AP

5.6.3 WDS

Module 6: Bridges

6.1 Bridge Connection

6.1.1 Introduction

6.1.2 Bridge roles in the network

6.1.3 Cable and power the bridge

6.1.4 LED indicators

6.1.5 Connecting to the bridge

6.1.6 Reset the bridge

6.2 Basic Configuration

6.2.1 Configure IP address and SSID via IPSU

6.2.2 Navigating the GUI

6.2.3 Configure basic settings via GUI

6.2.4 Navigating the menu

6.2.5 Configure basic settings via menu

6.3 Configuring the radio and Ethernet ports

6.3.1 Basic radio port configuration

6.3.2 Extended radio configuration – hardware page

6.3.3 Extended radio configuration – advanced page

6.3.4 Configuring the Ethernet port – identification page

6.3.5 Configuring the Ethernet port – hardware page

6.3.6 Configuring the Ethernet port – advanced page

6.4 Configuring Services

6.4.1 Configuring time services

6.4.2 Configuring boot services

6.4.3 Configuring name services

6.4.4 Configuring routing setup

6.5 Cisco Services

6.5.1 Services overview

6.5.2 CDP

6.5.3 Firmware upgrade and distribution

6.5.4 Hot standby management

6.5.5 Manage system configuration

6.6 1400 Series Bridge

6.2.1 Configure IP address and SSID through IPSU

6.2.2 Navigating the GUI

6.2.3 Configure basic settings through the GUI

6.2.4 Navigating the menu

6.2.5 Configure basic settings using the menu

Module 7: Antennas

7.1 Antennas

7.1.1 Introduction

7.1.2 Variables

7.1.3 Bandwidth

7.1.4 Beamwidth

7.1.5 Gain

7.1.6 Polarization

7.1.7 Radiation patterns

7.1.8 Diversity

7.2 Omnidirectional Antennas

7.2.1 Introduction

7.2.2 2.2 dBi Dipole ñrubber duckî antenna(s)

7.2.3 Ceiling antennas

7.2.4 Mast antennas

7.2.5 Pillar antennas

7.2.6 Integrated antennas

7.3 Directional Antennas

7.3.1 Introduction

7.3.2 Patch antennas

7.3.3 Yaqi

7.3.4 Solid dish

7.3.5 5 GHz sector

7.4 Cable and Accessories

7.4.1 Cable selection

7.4.2 Cable loss

7.4.3 Cable connectors and splitters

7.4.4 Amplifiers

7.4.5 Lightning arrestor

7.5 Link Engineering and RF Path Planning

7.5.1 Overview

7.5.2 Earth bulge

7.5.3 Site survey and path profiling

7.5.4 Alignment and interference

7.6 Antenna Installation

7.6.1 Overview

7.6.2 Ladder safety

7.6.3 Installation safety

7.6.4 Legal issues

7.6.5 EIRP rules

Module 8: Security

8.1 Security Fundamentals

8.1.1 What is security?

8.1.2 WLAN vulnerabilities

8.1.3 WLAN threats

8.1.4 Reconnaissance

8.1.5 Access

8.1.6 Denial of service

8.2 Basic WLAN Security Technologies

8.2.1 The WLAN security wheel

8.2.2 First generation wireless security

8.2.3 Wired equivalent privacy (WEP)

8.2.4 Authentication and association

8.3 Configuring Basic WLAN Security

8.3.1 Basic WLAN security

8.3.2 Enabling protocol and MAC filters on APs

8.3.3 Securing clients and APs

8.3.4 Monitoring WLAN equipment

8.3.5 Disable unneeded services

8.4 Enterprise WLAN Authentication

8.4.1 Second generation authentication

8.4.2 Authenticating wireless users

8.4.3 802.1x basics

8.4.4 How 802.1x works

8.4.5 802.1x authentication types

8.4.6 Choosing an 802.1x type

8.5 Enterprise Wireless Encryption

8.5.1 Strengthening WEP

8.5.2 Message integrity check

8.5.3 Broadcast key rotation (BKR)

8.5.4 Second generation encryption

8.5.5 Using VPNs

8.6 Other Enterprise Security Services

8.6.1 VLANs

8.6.2 Spanning tree

Module 9: Application Design and Site Survey Prep

9.1 Site Survey

9.1.1 Site survey

9.1.2 Site survey considerations

9.1.3 Standards and topologies

9.1.4 Important considerations

9.2 Applications

9.2.1 Changing technology and applications

9.3 WLAN Design

9.3.1 Design guidelines

9.3.2 Applications and data collection

9.3.3 Load and coverage

9.3.4 Bandwidth and throughput

9.3.5 Mobile users

9.3.6 Power consumption

9.3.7 Interference

9.3.8 Encryption

9.3.9 Fire code and safety issues

9.4 Building-to-building Design

9.4.1 Building-to-building overview

9.4.2 Design examples

9.4.3 Path considerations

9.4.4 Installation considerations

9.5 Site Survey Equipment

9.5.1 Equipment

9.5.2 APs and cards

9.5.3 Antennas and attenuators

9.5.4 Battery packs, cables, mounting, and markers

9.5.5 Measuring devices and digital cameras

9.5.6 Travel case

9.5.7 RF test device

9.6 Site Survey Documentation and Utilities

9.6.1 Site drawing and walkthrough

9.6.2 Bridge range calculation utility

9.6.3 ACU site survey

9.6.4 Link status meter (LSM)

Module 10: Site Survey

10.1 Infrastructure Awareness

10.1.1 Working with personnel

10.1.2 LAN infrastructure

10.1.3 Network map

10.1.4 LAN media

10.1.5 Firewalls, risers, cable paths, and service loops

10.1.6 Existing Network

10.1.7 Check the existing network health

10.1.8 Network performance baseline

10.2 Survey

10.2.1 Preparation

10.2.2 Getting started

10.2.3 Channel selection, data rates, and overlap

10.2.4 Work with existing conditions

10.2.5 Freezers

10.2.6 Multifloor survey

10.2.7 Interference and RF propagation

10.3 Mounting and Installation

10.3.1 AP mounting

10.3.2 Column mounting

10.3.3 Bridge mounting

10.3.4 Antenna mounting

10.3.5 Power

10.3.6 NEMA enclosures

10.4 Documentation

10.4.1 Documenting the WLAN design

10.4.2 Request for proposal

10.4.3 WLAN site survey specifics

10.4.4 Site survey report

Module 11: Troubleshooting Management, Monitoring, and Diagnostics

11.1 General Approach to Troubleshooting

11.1.1 Overview

11.1.2 Symptom - diagnosis - solution

11.1.3 Preparing for network failure

11.1.4 Network and fault management

11.2 OSI Troubleshooting

11.2.1 Model overview

11.2.2 Troubleshooting layers

11.2.3 Layer 1: media, connectors, and devices

11.2.4 Layer 2: bridges and switches

11.2.5 Layer 3: routers

11.2.6 Troubleshooting TCP/IP

11.3 Diagnostic Tools

11.3.1 Cable testers, multimeters, and network monitors

11.3.2 Sniffers

11.3.3 Spectrum analyzers

11.3.4 Gauss and tesla meters

11.4 WLAN Troubleshooting

11.4.1 Firmware

11.4.2 Configuration files

11.4.3 Unit status and password recovery

11.4.4 Antenna cable

11.4.5 Placement and obstacles

11.5 System Message Logging

11.5.1 Overview

11.5.2 Configure event notification via GUI

11.5.3 Configure event notification via IOS CLI

11.5.4 SNMP

11.5.5 Configure SNMP

11.5.6 Syslog and SNMP applications

11.6 Enterprise Management

11.6.1 Overview

11.6.2 WLSE

11.6.3 Cisco Structured Wireless Aware Network Solution

11.6.4 Aironet Configuration Administration Tool (ACAT)

11.6.5 Wavelink

11.6.6 Airwave

Module 12: Emerging Technologies

12.1 Ultra-wideband Wireless

12.1.1 Overview of ultra-wideband (UWB) wireless

12.1.2 UWB applications

12.1.3 UWB acceptance

12.1.4 Interference

12.1.5 Avoiding interference from other devices

12.1.6 UWB specifics

12.2 VoIP and Voice over WLANs

12.2.1 Overview of voice over IP (VoIP)

12.2.2 Components of VoIP

12.2.3 Centralized and distributed VoIP architectures

12.2.4 The ITU-T umbrella protocol: H.323

12.2.5 Session Initiation Protocol (SIP)

12.2.6 MGCP and H.248/Megaco

12.2.7 Miscellaneous VoIP protocols

12.2.8 VoIP and Quality of Service (QoS)

12.2.9 VoIP and WLANs

12.3 Mobile Wireless

12.3.1 Brief history of mobile wireless

12.3.2 Overview of mobile wireless systems

12.3.3 Roaming in a mobile wireless system

12.3.4 Mobile wireless middleware

12.3.5 Wireless Application Protocol (WAP)

12.3.6 The Open Mobile Alliance (OMA)

12.3.7 The future of mobile wireless

12.4 Wireless Organizations and Certification

12.4.1 The Wireless Fidelity (Wi-Fi) Alliance

12.4.2 Wireless LAN Association (WLANA)

12.4.3 Federal Communications Commission (FCC)

12.4.4 ETSI

12.4.5 UL

12.4.6 Cisco Wireless Certifications

12.4.7 CWNA

12.4.8 Case studies of wireless installations