5
Document Conventions .......................................................................................................................................................12
Contacting Allied Telesis .....................................................................................................................................................13
Chapter 1: Overview ........................................................................................................................................................ 15
Features ..............................................................................................................................................................................16
AT-GS900MX Models ..................................................................................................................................................16
10/100/1000 Mbps Twisted Pair Ports .........................................................................................................................16
Power over Ethernet.....................................................................................................................................................17
SFP Slots .....................................................................................................................................................................17
S1 and S2 Stacking Slots.............................................................................................................................................17
LEDs.............................................................................................................................................................................18
Installation Options.......................................................................................................................................................18
MAC Address Table .....................................................................................................................................................18
Management Software and Interfaces .........................................................................................................................18
Management Methods..................................................................................................................................................18
Front and Back Panels ........................................................................................................................................................19
Management Panel .............................................................................................................................................................22
10/100/1000Base-T Twisted Pair Ports ...............................................................................................................................23
Speed ...........................................................................................................................................................................23
Duplex Mode ................................................................................................................................................................23
Wiring Configuration.....................................................................................................................................................24
Maximum Distance.......................................................................................................................................................24
Power over Ethernet.....................................................................................................................................................24
Cable Requirements.....................................................................................................................................................24
Port Pinouts..................................................................................................................................................................25
Power over Ethernet............................................................................................................................................................26
PoE Standards .............................................................................................................................................................26
Powered Device Classes .............................................................................................................................................27
Cable Requirements.....................................................................................................................................................27
Power Budget...............................................................................................................................................................29
Port Prioritization ..........................................................................................................................................................29
Wiring Implementation..................................................................................................................................................30
SFP Slots.............................................................................................................................................................................31
Combo Twisted Pair Ports and SFP Slots...........................................................................................................................32
Stacking Slots......................................................................................................................................................................33
eco-friendly Button...............................................................................................................................................................34
LEDs....................................................................................................................................................................................35
LEDs for the Twisted Pair Ports ...................................................................................................................................35
LEDs for the PoE Twisted Pair Ports............................................................................................................................36
LEDs for the Combo Twisted Pair Ports.......................................................................................................................38
LEDs for the SFP Slots ................................................................................................................................................40
LEDs for the Stacking Slots..........................................................................................................................................40
Switch ID LED ..............................................................................................................................................................41
USB Port..............................................................................................................................................................................43
Console Port........................................................................................................................................................................44
Power Supply ......................................................................................................................................................................45
Chapter 2: Virtual Chassis Stacking .............................................................................................................................. 47
Overview..............................................................................................................................................................................48
Stacking Slots and Transceivers .........................................................................................................................................49
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