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5
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
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