Allied Telesis AT-GS924MX User manual

613-002079 Rev. A
AT-GS900MX Series
GIGABIT ETHERNET SWITCHES
AT-GS924MX
AT-GS924MPX
AT-GS948MX
AT-GS948MPX
Installation Guide for Stand-alone
Switches

Copyright 2015 Allied Telesis, Inc.
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesis, Inc.
Allied Telesis and the Allied Telesis logo are trademarks of Allied Telesis, Incorporated. All other product names, company names,
logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners.
Allied Telesis, Inc. reserves the right to make changes in specifications and other information contained in this document without prior
written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesis, Inc. be liable for
any incidental, special, indirect, or consequential damages whatsoever, including but not limited to lost profits, arising out of or related
to this manual or the information contained herein, even if Allied Telesis, Inc. has been advised of, known, or should have known, the
possibility of such damages.

3
Electrical Safety and Emissions Standards
This product meets the following standards.
RFI Emissions: FCC Class A, EN55022 Class A, EN61000-3-2, EN61000-3-3, VCCI Class A, RCM,
CE
EMC (Immunity): EN55024
Electrical Safety: EN60950-1 (TUV), UL 60950-1 (CULUS)
U.S. Federal Communications Commission
Radiated Energy
Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15
of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with this instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.
Note: Modifications or changes not expressly approved of by the manufacturer or the FCC, can void your right to operate
this equipment.
Industry Canada
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
Warning: In a domestic environment this product may cause radio interference in which case
the user may be required to take adequate measures.
Laser Safety EN60825-1

4
Translated Safety Statements
Important: Safety statements that have the symbol are translated into multiple languages in the
Translated Safety Statements document at www.alliedtelesis.com/support.

5
Contents
Document Conventions .......................................................................................................................................................14
Contacting Allied Telesis .....................................................................................................................................................15
Chapter 1: Overview ........................................................................................................................................................ 17
Features ..............................................................................................................................................................................18
AT-GS900MX Models ..................................................................................................................................................18
10/100/1000 Mbps Twisted Pair Ports .........................................................................................................................18
Power over Ethernet.....................................................................................................................................................19
SFP Slots .....................................................................................................................................................................19
S1 and S2 Stacking Slots.............................................................................................................................................19
LEDs.............................................................................................................................................................................20
Installation Options.......................................................................................................................................................20
MAC Address Table .....................................................................................................................................................20
Management Software and Interfaces .........................................................................................................................20
Management Methods..................................................................................................................................................20
Front and Back Panels ........................................................................................................................................................21
Management Panel .............................................................................................................................................................24
10/100/1000Base-T Twisted Pair Ports ...............................................................................................................................25
Speed ...........................................................................................................................................................................25
Duplex Mode ................................................................................................................................................................25
Wiring Configuration.....................................................................................................................................................26
Maximum Distance.......................................................................................................................................................26
Power over Ethernet.....................................................................................................................................................26
Cable Requirements.....................................................................................................................................................26
Port Pinouts..................................................................................................................................................................27
Power over Ethernet............................................................................................................................................................28
PoE Standards .............................................................................................................................................................28
Powered Device Classes .............................................................................................................................................29
Cable Requirements.....................................................................................................................................................29
Power Budget...............................................................................................................................................................31
Port Prioritization ..........................................................................................................................................................31
Wiring Implementation..................................................................................................................................................32
SFP Slots.............................................................................................................................................................................33
Combo Twisted Pair Ports and SFP Slots...........................................................................................................................34
Stacking Slots......................................................................................................................................................................35
eco-friendly Button...............................................................................................................................................................36
LEDs....................................................................................................................................................................................37
LEDs for the Twisted Pair Ports ...................................................................................................................................37
LEDs for the PoE Twisted Pair Ports............................................................................................................................38
LEDs for the Combo Twisted Pair Ports.......................................................................................................................40
LEDs for the SFP Slots ................................................................................................................................................42
LEDs for the Stacking Slots..........................................................................................................................................42
Switch ID LED ..............................................................................................................................................................43
USB Port..............................................................................................................................................................................45
Console Port........................................................................................................................................................................46
Power Supply ......................................................................................................................................................................47
Chapter 2: Beginning the Installation ............................................................................................................................ 49
Reviewing Safety Precautions.............................................................................................................................................50
Choosing a Site for the Switch ............................................................................................................................................54

Contents
6
Unpacking the Switch ......................................................................................................................................................... 55
Chapter 3: Installing the Switch on a Table or in an Equipment Rack ....................................................................... 59
Selecting a Site for the Switch ............................................................................................................................................ 60
Installing the Switch on a Table .......................................................................................................................................... 61
Installing the Switch in an Equipment Rack ........................................................................................................................ 62
Chapter 4: Installing the Switch on a Wall ..................................................................................................................... 67
Installing the AT-GS924MX Switch on a Wall..................................................................................................................... 68
Positions of the Switch on a Wall................................................................................................................................. 68
Recommended Minimum Wall Area Dimensions ........................................................................................................ 69
Wall Guidelines............................................................................................................................................................ 70
Tools and Material ....................................................................................................................................................... 71
Installing the AT-GS924MX Switch.............................................................................................................................. 71
Installing the AT-GS924MPX, AT-GS948MX, and AT-GS948MPX Switches on a Wall .................................................... 76
Position of the Switch on the Wall ............................................................................................................................... 76
Recommended Minimum Wall Area Dimensions ........................................................................................................ 76
Positions of the Brackets ............................................................................................................................................. 78
Plywood Base for a Wall with Wooden Studs.............................................................................................................. 78
Wall Guidelines............................................................................................................................................................ 81
Tools and Material ....................................................................................................................................................... 82
Installing the Plywood Base......................................................................................................................................... 82
Installing the Switch on the Plywood Base .................................................................................................................. 82
Installing the Switch on a Concrete Wall ..................................................................................................................... 85
Chapter 5: Cabling the Networking Ports ...................................................................................................................... 89
Cabling the Twisted Pair Ports............................................................................................................................................ 90
Installing SFP Transceivers ................................................................................................................................................ 92
Installing SFP Modules ................................................................................................................................................ 93
Chapter 6: Powering On the Switch ............................................................................................................................... 97
Powering On the Switch...................................................................................................................................................... 98
Monitoring the Initialization Processes.............................................................................................................................. 101
Configuring the Switch for Stand-alone Operations.......................................................................................................... 104
Starting a Local Management Session...................................................................................................................... 104
Disabling VCStack..................................................................................................................................................... 106
Specifying Ports in the Command Line Interface for Stand-alone Switches..................................................................... 109
Chapter 7: Troubleshooting .......................................................................................................................................... 111
Appendix A: Technical Specifications ......................................................................................................................... 115
Physical Specifications ..................................................................................................................................................... 115
Environmental Specifications............................................................................................................................................ 116
Power Specifications......................................................................................................................................................... 116
Certifications ..................................................................................................................................................................... 117
RJ-45 Twisted Pair Port Pinouts....................................................................................................................................... 118
RJ-45 Style Serial Console Port Pinouts .......................................................................................................................... 119

7
Figures
Figure 1: Front Panels of the AT-GS924MX and AT-GS924MPX Switches.........................................................................21
Figure 2: Front Panels of the AT-GS948MX and AT-GS948MPX Switches.........................................................................22
Figure 3: Back Panel of the AT-GS924MX Switch ...............................................................................................................23
Figure 4: Back Panel of the AT-GS924MPX and AT-GS948MPX Switches ........................................................................23
Figure 5: Back Panel of the AT-GS948MX Switch ...............................................................................................................23
Figure 6: AT-GS900MX Series Management Panel.............................................................................................................24
Figure 7: Stacking Transceiver.............................................................................................................................................35
Figure 8: LEDs for the Twisted Pair Ports on the AT-GS924MX and AT-GS948MX Switches ............................................37
Figure 9: LEDs for the PoE Twisted Pair Ports on the AT-GS924MPX and AT-GS948MPX Switches................................39
Figure 10: LEDs for the Combo Twisted Pair Ports..............................................................................................................41
Figure 11: SFP Slot LEDs ....................................................................................................................................................42
Figure 12: Switch ID LED .....................................................................................................................................................43
Figure 13: Switch ID LED Not in Low Power Mode ..............................................................................................................44
Figure 14: Switch ID LEDs in Low Power Mode...................................................................................................................44
Figure 15: Components of the Switches...............................................................................................................................55
Figure 16: Components of the AT-GS924MX Switch ...........................................................................................................56
Figure 17: Turning the Switch Upside Down ........................................................................................................................62
Figure 18: Removing the Rubber Feet .................................................................................................................................62
Figure 19: Installing Brackets on the AT-GS924MX Switch .................................................................................................63
Figure 20: Attaching Brackets to the AT-GS924MX, AT-GS948MX, and AT-GS948MPX Switches....................................64
Figure 21: Attaching Brackets to the AT-GS924MX, AT-GS948MX, and AT-GS948MPX Switches (Continued)................65
Figure 22: Mounting the Switch in an Equipment Rack........................................................................................................66
Figure 23: Positions of the AT-GS924MX Switch on a Wall.................................................................................................68
Figure 24: Minimum Wall Area Dimensions for the AT-GS924MX Switch with the Front Panel on the Left ........................69
Figure 25: Minimum Wall Area Dimensions for the AT-GS924MX Switch with the Front Panel on the Right ......................70
Figure 26: Attaching the Brackets to the AT-GS924MX Switch for Wall Installation ............................................................72
Figure 27: Marking the Locations of the Bracket Holes on a Concrete Wall ........................................................................73
Figure 28: Installing the AT-GS924MX Switch on a Wall .....................................................................................................75
Figure 29: Positions of the AT-GS924MPX, AT-GS948MX, and AT-GS948MPX Switches on a Wall.................................76
Figure 30: Minimum Wall Area Dimensions for the Switch When the Front Panel is on the Left .........................................77
Figure 31: Minimum Wall Area Dimensions for the Switch When the Front Panel is on the Right.......................................77
Figure 32: Bracket Positions on the Switch ..........................................................................................................................78
Figure 33: Switch on a Plywood Base ..................................................................................................................................79
Figure 34: Distances Between the Brackets on the AT-GS924MPX, AT-GS948MX, and AT-GS948MPX Switches ..........80
Figure 35: Steps to Installing the Switch with a Plywood Base ............................................................................................81
Figure 36: Attaching the Brackets for Wall Installation for All Switches Except the AT-GS924MX Switch...........................83
Figure 37: Securing the Switch to the Plywood Base ...........................................................................................................84
Figure 38: Marking the Locations of the Bracket Holes on a Concrete Wall ........................................................................85
Figure 39: Installing the AT-GS924MPX, AT-GS948MX, or AT-GS948MPX Switch on a Wall............................................86
Figure 40: Removing the Dust Plug from an SFP Slot .........................................................................................................93
Figure 41: Installing an SFP Transceiver..............................................................................................................................93
Figure 42: Removing the Dust Cover from an SFP Transceiver ..........................................................................................94
Figure 43: Positioning the SFP Handle in the Upright Position ............................................................................................94
Figure 44: Connecting a Fiber Optic Cable to an SFP Transceiver......................................................................................95
Figure 45: Installing the Retaining Clip .................................................................................................................................98
Figure 46: Raising the Retaining Clip ...................................................................................................................................99
Figure 47: Plugging in the AC Power Cord...........................................................................................................................99
Figure 48: Lowering the Retaining Clip.................................................................................................................................99
Figure 49: Switch Initialization Messages...........................................................................................................................101
Figure 50: Switch Initialization Messages (Continued) .......................................................................................................102

Figures
8
Figure 51: Switch Initialization Messages (Continued) .......................................................................................................103
Figure 52: Connecting the Management Cable to the Console Port ..................................................................................105
Figure 53: User Exec Mode Prompt....................................................................................................................................106
Figure 54: SHOW STACK Command.................................................................................................................................106
Figure 55: Moving to the Global Configuration Mode .........................................................................................................107
Figure 56: Confirmation Prompt for the NO STACK ENABLE Command ..........................................................................107
Figure 57: Returning to the Privileged Exec Mode .............................................................................................................108
Figure 58: Saving the Changes with the WRITE Command...............................................................................................108
Figure 59: PORT Parameter in the Command Line Interface.............................................................................................109
Figure 60: RJ-45 Socket Pin Layout (Front View)...............................................................................................................118

x510 Series Installation Guide for Stand-alone Switches
9

Figures
10

11
Tables
Table 1: Twisted Pair Cable for the 10/100/1000Base-T Ports ...........................................................................................26
Table 2: IEEE Powered Device Classes ..............................................................................................................................29
Table 3: Twisted Pair Cable Requirements for the 10/100Base-TX Ports at 10 or 100Mbps ..............................................29
Table 4: Twisted Pair Cable Requirements for the 10/100/1000Base-T Ports at 1000Mbps ..............................................30
Table 5: Combo Port Pairs ..................................................................................................................................................34
Table 6: LEDs on the Twisted Pair Ports on the AT-GS924MX and AT-GS948MX Switches .............................................38
Table 7: LEDs for the PoE Twisted Pair Ports on the AT-GS924MPX and AT-GS948MPX Switches ................................39
Table 8: LEDs on the Combo Twisted Pair Ports ................................................................................................................41
Table 9: SFP Slot LEDs .......................................................................................................................................................42
Table 10: S1 and S2 Slot LEDs ...........................................................................................................................................43
Table 11: Product Dimensions ...........................................................................................................................................115
Table 12: Product Weights ................................................................................................................................................115
Table 13: Ventilation Requirements ...................................................................................................................................116
Table 14: Environmental Specifications .............................................................................................................................116
Table 15: Input Voltages ....................................................................................................................................................116
Table 16: Maximum Power Consumption ..........................................................................................................................117
Table 17: Heat Dissipation ................................................................................................................................................117
Table 18: Product Certifications .........................................................................................................................................117
Table 19: Pin Signals for 10 and 100 Mbps .......................................................................................................................118
Table 20: Pin Signals for 1000 Mbps .................................................................................................................................118
Table 21: RJ-45 Style Serial Console Port Pin Signals .....................................................................................................119

Tables
12

13
Preface
This guide contains the installation instructions for the AT-GS900MX
Series of Layer 2+ Gigabit Ethernet switches. This preface contains the
following sections:
“Document Conventions” on page 14
“Contacting Allied Telesis” on page 15
Note
This guide explains how to install the switches as stand-alone units.
For instructions on how to install them in a stack configuration with
Virtual Chassis Stacking (VCStack™), refer to the AT-GS900MX
Series Installation Guide for VCStack.

Preface
14
Document Conventions
This document uses the following conventions:
Note
Notes provide additional information.
Caution
Cautions inform you that performing or omitting a specific action
may result in equipment damage or loss of data.
Warning
Warnings inform you that performing or omitting a specific action
may result in bodily injury.

AT-GS900MX Series Installation Guide for Stand-alone Switches
15
Contacting Allied Telesis
If you need assistance with this product, you may contact Allied Telesis
technical support by going to the Support & Services section of the Allied
Telesis web site at www.alliedtelesis.com/support. You can find links for
the following services on this page:
24/7 Online Support — Enter our interactive support center to
search for answers to your product questions in our knowledge
database, to check support tickets, to learn about RMAs, and to
contact Allied Telesis technical experts.
USA and EMEA phone support — Select the phone number that
best fits your location and customer type.
Hardware warranty information — Learn about Allied Telesis
warranties and register your product online.
Replacement Services — Submit a Return Merchandise
Authorization (RMA) request via our interactive support center.
Documentation — View the most recent installation and user
guides, software release notes, white papers, and data sheets for
your products.
Software Downloads — Download the latest software releases for
your managed products.
For sales or corporate information, go to www.alliedtelesis.com/
purchase and select your region.

Preface
16

17
Chapter 1
Overview
This chapter contains the following sections:
“Features” on page 18
“Front and Back Panels” on page 21
“Management Panel” on page 24
“10/100/1000Base-T Twisted Pair Ports” on page 25
“Power over Ethernet” on page 28
“SFP Slots” on page 33
“Combo Twisted Pair Ports and SFP Slots” on page 34
“Stacking Slots” on page 35
“eco-friendly Button” on page 36
“LEDs” on page 37
“USB Port” on page 45
“Console Port” on page 46
“Power Supply” on page 47
Note
This guide explains how to install the switches as stand-alone units.
For instructions on how to install them in a stack configuration with
Virtual Chassis Stacking (VCStack™), refer to the AT-GS900MX
Series Installation Guide for VCStack.

Chapter 1: Overview
18
Features
The AT-GS900MX Series Switches and their features are listed in this
section:
AT-GS900MX
Models
Here are model names of the AT-GS900MX Series switches:
AT-GS924MX
AT-GS924MPX
AT-GS948MX
AT-GS948MPX
10/100/1000
Mbps Twisted
Pair Ports
Here are the basic features of the 10/100/1000 Mbps twisted pair ports:
24 or 48 ports per switch
10Base-T, 100Base-TX, and 1000Base-T compliant
IEEE 802.3u Auto-Negotiation compliant
Auto-MDI/MDIX
100 meters (328 feet) maximum operating distance
IEEE 802.3x flow control in 10/100Base-TX full-duplex mode
IEEE 802.3x backpressure in 10/100Base-TX half-duplex mode
IEEE 802.3ab 1000Base-T
Jumbo frames up to 9KB
RJ-45 connectors
Note
Two twisted pair ports are paired with the SFP slots to form combo
port pairs. For information, “Combo Twisted Pair Ports and SFP
Slots” on page 34.

AT-GS900MX Series Installation Guide for Stand-alone Switches
19
Power over
Ethernet
Here are the basic features of Power over Ethernet (PoE) on the twisted
pair ports on the AT-GS924MPX and AT-GS948MPX Switches:
Supported on ports 1 to 24 on the AT-GS924MPX Switch and ports
1 to 48 on the AT-GS948MPX Switch
Supports PoE (15.4 watts maximum) and PoE+ (30 watts
maximum) powered devices
Supports powered device classes 0 to 4
Maximum power budget of 370 watts
Port prioritization
Mode A wiring
SFP Slots Here are the basic features of the two SFP slots on the switches:
Supports 1000Base-SX/LX SFP transceivers
Supports single-port BiDi 1000Base-LX SFP transceivers
Supports 1000Base-ZX SFP transceivers
Note
SFP transceivers must be purchased separately. For a list of
supported transceivers, contact your Allied Telesis distributor or
reseller.
Note
The SFP slots are paired with two twisted pair 10/100/1000Base-T
ports to form combo port pairs. For information, refer to “Combo
Twisted Pair Ports and SFP Slots” on page 34.
S1 and S2
Stacking Slots
The S1 and S2 slots are stacking ports for the VCStack feature. You may
use the slots to build a stack of up to four switches. The slots support AT-
SP10TW Twisted Pair Transceivers. For more information, refer to the
“Stacking Slots” on page 35.

Chapter 1: Overview
20
LEDs Here are the port LEDs:
Link/activity and duplex mode LEDs for the twisted pair ports on
non-PoE switches
Link/activity and PoE status LEDs for the twisted pair ports on PoE
switches
Link/activity LEDs for SFP and SFP+ slots
Switch ID number LED
eco-friendly button turns off the LEDs to conserve electricity
Installation
Options
Here are the installation options for the switches:
19-inch equipment rack
Desk or tabletop
Wall
MAC Address
Table
Here are the basic features of the MAC address tables of the switches:
Storage capacity of 16,000 dynamic MAC address entries
Storage capacity of 256 static MAC address entries
Automatic learning and aging
Management
Software and
Interfaces
Here are the management software and interfaces:
AlliedWare Plus Management Software
Command line interface
Management
Methods
Here are the methods for managing the switches:
Local management through the Console port
Remote Telnet and Secure Shell management
SNMPv1, v2c, and v3