Table of Contents
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Contents
What to Prepare for Installation in a Rack ..............................................................................................................50
Rack Installation of AT-GS920/24 ..........................................................................................................................50
Rack Installation of AT-GS920/16 or AT-GS920/8 .................................................................................................52
Cabling the Switch .........................................................................................................................................................57
Powering On the Switch ................................................................................................................................................58
Chapter 3: Installing the AT-GS920/8PS Switch .............................................................................................................61
Installing the AT-GS920/8PS Switch on a Table ...........................................................................................................62
Installing theAT-GS920/8PS Switch in an Equipment Rack ..........................................................................................63
Installing Two Switches in One Row ......................................................................................................................63
Installing a Switch in One Row ...............................................................................................................................65
Installing the AT-GS920/8PS Switch on a Wall .............................................................................................................68
Guidelines ..............................................................................................................................................................68
What to Prepare for Wall Installation ......................................................................................................................69
Installing the Switch on a Wall................................................................................................................................69
Chapter 4: Switch Configuration ......................................................................................................................................71
Configuration Switch and LED Locations ......................................................................................................................72
Feature Configuration ....................................................................................................................................................73
Multicast Frame Pass-Through ..............................................................................................................................73
Energy Efficiency Ethernet (EEE)...........................................................................................................................76
Loop Prevention .....................................................................................................................................................78
Flooding..................................................................................................................................................................80
Flow Control ...........................................................................................................................................................82
Ethernet Port Configuration ...........................................................................................................................................84
Force MDI/ MDI-X and Auto MDI/MDI-X ................................................................................................................84
Configuring All Ports with the Same Speed and Duplex Settings ..........................................................................85
Configuring an Individual Port with Speed and Duplex ..........................................................................................87
Configuring All Ports with Auto or Force MDI/MDI-X..............................................................................................88
Configuring an Individual Port with Auto or Force MDI/MDI-X ...............................................................................89
Reseting Ports to Default Settings .........................................................................................................................90
Chapter 5: Troubleshooting ..............................................................................................................................................93
Appendix A: Technical Specifications .............................................................................................................................95
Physical Specifications ..................................................................................................................................................95
Environmental Specifications.........................................................................................................................................95
Safety ............................................................................................................................................................................96
Electromagnetic Emissions Certifications......................................................................................................................97
EMI (Electro Magnetic Interference).......................................................................................................................97
ICES-003 Class A or B ...........................................................................................................................................97
EN55032: 2012/AC: 2013 Class A or B .................................................................................................................97
CISPR 32 ...............................................................................................................................................................97
RCM AS/NZS CISPR 32: 2013 ..............................................................................................................................97
ANATEL .................................................................................................................................................................97
Immunity .................................................................................................................................................................97
Electrical Safety......................................................................................................................................................97
EMS (Electromagnetic Susceptibility) EN55024:2010...................................................................................................98
Power Specifications .....................................................................................................................................................98
RJ-45 Twisted Pair Port Connectors .............................................................................................................................99
Appendix B: AT-GS920/24 Switch Wall Mount Installation ..........................................................................................101
Unpacking the AT-BRKT-J22 Wall Mount Kit ..............................................................................................................102
Installing a Switch Using the AT-BRKT-J22 Wall Mount Kit ........................................................................................103
What to Prepare ...................................................................................................................................................103
Installing a Switch Using the AT-BRKT-J22 Brackets ..........................................................................................103
Appendix C: Loop Prevention Feature ..........................................................................................................................109
Guidelines for Loop Prevention ...................................................................................................................................110
Root Switch .................................................................................................................................................................111
Root Switch Overview ..........................................................................................................................................111
Switch Priority.......................................................................................................................................................111
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