manuais Madge Networks 802.11b

Madge networks 802.11b Manual do Utilizador (3 páginas)

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©2005 Madge Limited

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Part Number 95-02

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Ordering Information

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Ofﬁce Locations

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Madge networks 802.11b Manual do Utilizador (45 páginas)

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Link Layer Standards and

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Protocols

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Link Layer Standards

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Medium Access Control Layer

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Services

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Logical Link Control Services

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Standard Link Layer Protocols

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IEEE 802.5/IBM Token Ring

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Token Ring Operation

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Token Ring MAC Frame

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Other Features of Token Ring

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(ANSI X3T12)

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Wireless hosts

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• Laptop, PDA, IP phone

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• Run applications

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• May be stationary (non

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Network

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– e.g., Cell towers

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802.11 access points

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Infrastructure

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Wireless Link Characteristics

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Wireless LANs and CSMA

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Hidden Terminal Problem

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Exposed Station Problem

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Access in Wireless

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IEEE 802.11 Wireless LAN

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802.11 LAN architecture

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802.11: Channels, association

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802.11 Modes of Operation

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– Protocols used are:

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IEEE 802.11: Medium Access

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802.11 sender

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802.11 receiver

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- if frame received OK

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Avoiding Collisions (more)

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Collision Avoidance: RTS-CTS

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The 802.11 MAC Protocol…

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Extending Wireless Network

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Extending Wireless Network…

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802.11 Frame: Addressing

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802.11 frame: addressing

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802.11 frame: more

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802.11 Services

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802.11 Services…

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Wi-MAX (802.16)

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The 802.16 Physical Layer

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802.16 Physical Layer

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Other Popular Wireless

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Madge networks 802.11b Guia do Utilizador (7 páginas)

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Smart Wireless

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Contents

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1 Introduction

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2 Package Contents

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3 System Requirements

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4 Software Setup

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5 Hardware Setup

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7 Specification

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8 Troubleshooting

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