5
Preface
................................................................................................................................................................................11
Safety Symbols Used in this Document................................................................................................................................12
Where to Find Web-based Guides .......................................................................................................................................13
Contacting Allied Telesis ......................................................................................................................................................14
Online Support ..............................................................................................................................................................14
Email and Telephone Support.......................................................................................................................................14
Warranty ........................................................................................................................................................................14
Returning Products........................................................................................................................................................14
Sales or Corporate Information .....................................................................................................................................14
Management Software Updates ....................................................................................................................................14
Chapter 1: Overview
..........................................................................................................................................................15
Features ...............................................................................................................................................................................16
Front and Back Panels .........................................................................................................................................................17
Ports .....................................................................................................................................................................................18
Twisted Pair Ports .........................................................................................................................................................18
SFP Ports ......................................................................................................................................................................18
LEDs.....................................................................................................................................................................................19
Power LED ....................................................................................................................................................................19
Port LEDs ......................................................................................................................................................................19
Power Supply .......................................................................................................................................................................21
Ethernet Switching Basics ....................................................................................................................................................22
MAC Address Table ......................................................................................................................................................22
Duplex Mode .................................................................................................................................................................22
Store and Forward.........................................................................................................................................................23
Back Pressure and Flow Control...................................................................................................................................23
Network Topologies..............................................................................................................................................................25
Power Workgroup Topology ..........................................................................................................................................25
Collapsed Backbone .....................................................................................................................................................26
Chapter 2: Installation
.......................................................................................................................................................27
Reviewing Safety Precautions..............................................................................................................................................28
Selecting a Site for the Switch..............................................................................................................................................30
Cabling .................................................................................................................................................................................31
Unpacking the Switch ...........................................................................................................................................................32
Installing the Switch on a Desktop........................................................................................................................................33
Installing the Switch in a Rack..............................................................................................................................................34
Installing an Optional SFP Transceiver ................................................................................................................................37
Cabling and Powering On the Switch ...................................................................................................................................39
Connecting the Twisted Pair Cables .............................................................................................................................39
Connecting the Fiber Optic Cables ...............................................................................................................................39
Powering On the Switch ................................................................................................................................................40
Starting a Management Session ..........................................................................................................................................42
Chapter 3: Troubleshooting
..............................................................................................................................................43
Appendix A: Technical Specifications
.............................................................................................................................45
Physical Specifications .........................................................................................................................................................45
Environmental Specifications................................................................................................................................................45
Power Specifications ............................................................................................................................................................45
Safety and Electromagnetic Emissions Certifications...........................................................................................................45
Contents
Содержание AT-GS948
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Страница 46: ...Appendix A Technical Specifications 46 ...