Allied-telesis AT-GS900/8PS User Manual Page 5
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Preface ................................................................................................................................................................................11
Symbol Conventions .....................................................................................................................................................12
Contacting Allied Telesis ...............................................................................................................................................13
Chapter 1: Overview ..........................................................................................................................................................15
Features ........................................................................................................................................................................16
General ..................................................................................................................................................................16
Twisted Pair Ports ..................................................................................................................................................16
LEDs ......................................................................................................................................................................16
PoE Ports ...............................................................................................................................................................16
SFP Slots ...............................................................................................................................................................16
Power over Ethernet ..............................................................................................................................................17
Installation Options.................................................................................................................................................17
Power Conservation...............................................................................................................................................17
MAC Address Table ...............................................................................................................................................17
Dimensions ............................................................................................................................................................17
Operating Conditions .............................................................................................................................................17
Front and Back Panels ..................................................................................................................................................18
Twisted Pair Ports .........................................................................................................................................................19
Cable Specifications...............................................................................................................................................19
MDI/MDI-X Mode ...................................................................................................................................................19
Auto-Negotiation Mode ..........................................................................................................................................20
Flow Control and Back Pressure............................................................................................................................20
SFP Port........................................................................................................................................................................21
LEDs..............................................................................................................................................................................22
Power Over Ethernet.....................................................................................................................................................25
PoE Standards .......................................................................................................................................................25
PoE Powered Device Classes ...............................................................................................................................26
PoE Power Budget.................................................................................................................................................26
PoE Port Prioritization ............................................................................................................................................27
PoE Guard Band ....................................................................................................................................................27
Exceeding PoE Power Budget ...............................................................................................................................27
Wiring Implementation ...........................................................................................................................................29
Power Supply ................................................................................................................................................................30
Chapter 2: Installation .......................................................................................................................................................31
Reviewing Safety Precautions.......................................................................................................................................32
Selecting a Site for the Switch.......................................................................................................................................34
Unpacking the Switch....................................................................................................................................................35
Installing the Switch on a Desktop .............................................................................................
...................................37
Installing the Switch in an Equipment Rack...................................................................................................................38
Installing the Switch on a Wall.......................................................................................................................................40
Installing Optional SFP Transceiver ..............................................................................................................................43
Cabling the Switch.........................................................................................................................................................45
Powering On the Switch ................................................................................................................................................46
Chapter 3: Troubleshooting ..............................................................................................................................................47
Power LED OFF ............................................................................................................................................................47
Twisted Pair Port LINK/ACT LED Off ............................................................................................................................47
SFP Port LINK/ACT LED Off.........................................................................................................................................48
Contents
- AT-GS900/8PS 1
- Radiated Energy 3
- Industry Canada 3
- Translated Safety Statements 4
- Contents 5
- Symbol Conventions 12
- Contacting Allied Telesis 13
- Overview 15
- Features 16
- Front and Back Panels 18
- Twisted Pair Ports 19
- Back Pressure 20
- Auto-Negotiation 20
- Flow Control and 20
- SFP Port 21
- Chapter 1: Overview 22
- Power Over Ethernet 25
- PoE Powered 26
- Device Classes 26
- PoE Power 26
- PoE Port 27
- Prioritization 27
- Exceeding PoE 27
- Power Budget 27
- Implementation 29
- Power Supply 30
- Installation 31
- Reviewing Safety Precautions 32
- Chapter 2: Installation 34
- Unpacking the Switch 35
- Switch” on page 45 39
- Cabling the Switch 45
- Powering On the Switch 46
- Troubleshooting 47
- SFP Port LINK/ACT LED Off 48
- Slow Network Performance 49
- Chapter 3: Troubleshooting 50
- Technical Specifications 53
- PoE Specifications 54
- Connectors and Port Pinouts 55
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