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Preface ............................................................................................................................................................15
Safety Symbols Used in this Document ...........................................................................................................16
Contacting Allied Telesis ..................................................................................................................................17
Chapter 1: Overview ......................................................................................................................................19
Introduction.......................................................................................................................................................20
AT-SBx3112 Chassis .......................................................................................................................................23
Ethernet Line and Control Cards Slots.......................................................................................................25
Power Supply Slots....................................................................................................................................25
AT-SBx31GT24 Line Card................................................................................................................................27
AT-SBx31GT40 Line Card................................................................................................................................28
AT-SBx31GP24 PoE Line Card........................................................................................................................29
AT-SBx31GS24 SFP Line Card .......................................................................................................................30
AT-SBx31GC40 Line Card ...............................................................................................................................31
AT-SBx31XZ4 XFP Line Card..........................................................................................................................33
AT-SBx31XS6 SFP+ Line Card........................................................................................................................34
10/100/1000Base-T Twisted Pair Ports............................................................................................................35
Connector Type..........................................................................................................................................35
Speed.........................................................................................................................................................35
Duplex Mode..............................................................................................................................................35
Maximum Distance.....................................................................................................................................36
Cable Requirements ..................................................................................................................................36
Automatic MDIX Detection.........................................................................................................................37
Straight-through or Crossover Cabling.......................................................................................................37
Port Pinouts................................................................................................................................................38
Power over Ethernet on the AT-SBx31GP24 Line Card...................................................................................39
Powered Device Classes ...........................................................................................................................39
Power Budgeting........................................................................................................................................40
PoE Wiring .................................................................................................................................................40
Port Numbers on the AT-SBx31GC40 Line Card.............................................................................................42
Port LEDs on the Ethernet Line Cards .............................................................................................................44
AT-SBx31GT24 Line Card .........................................................................................................................44
AT-SBx31GT40 Line Card .........................................................................................................................45
AT-SBx31GP24 Line Card.........................................................................................................................46
AT-SBx31GS24 Line Card.........................................................................................................................48
AT-SBx31GC40 Line Card.........................................................................................................................49
AT-SBx31XZ4 Line Card............................................................................................................................51
AT-SBx31XS6 Line Card ...........................................................................................................................51
AT-SBx31CFC Central Fabric Controller Card.................................................................................................53
SYS Status LEDs.......................................................................................................................................54
SBx STATUS LEDs....................................................................................................................................55
eco-friendly Button .....................................................................................................................................56
Reset Button ..............................................................................................................................................56
NET MGMT Port ........................................................................................................................................58
NET MGMT LED........................................................................................................................................60
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