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AT-PWR600
Installation Manual
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Allied Telesis AT-x950-28XSQ, AT-x950-28XTQm, AT-XEM2-12XT, AT-XEM2-12XTm, AT-XEM2-12XS Installation Manual

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Page 1
x950 Switches
Advanced Layer 3+
AlliedWare Plus™ v5.4.9-1 AT-x950-28XSQ Switch
AT-x950-28XTQm Switch AT-XEM2-12XT Ethernet Line Card AT-XEM2-12XTm Ethernet Line Card AT-XEM2-12XS Ethernet Line Card AT-XEM2-4QS Ethernet Line Card AT-XEM2-1CQ Ethernet Line Card AT-PWR600 AC Power Supply AT-FAN05 Fan Module
Installation Guide for Virtual Chassis Stacking
613-002643 Rev. C
Page 2
Copyright 2019 Allied Telesis, Inc.
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesis, Inc. Allied Telesis, VCStack, 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.
Page 3
Electrical Safety and Emissions Standards
Laser Safety EN60825-1
This product meets the following standards.
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.
Electrical Safety: UL 60950-1 (
CULUS
), EN 60825-1 (TUV), EN 60925-1 (TUV)
EMI (Emissions) FCC Class A
CISPR 22 Class A EN 55032 Class A VCCI Class A ICES-003 Class A RCM EAC Certification
EMC (Immunity) EN 55024
EN 61000-3-2 EN 61000-3-3
Electrical and Laser Safety UL 60950-1 (
EN 60925-1 (TUV) EN 60825-1
RoHS RoHS6
CULUS
)
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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/library.
Remarque: Les consignes de sécurité portant le symb ole sont traduites dans plusieurs langues dans le document Translated Safety Statements, disponible à l'adresse www.alliedtelesis.com/ library.
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Contents

Preface ...............................................................................................................................................................................13
Document Conventions .......................................................................................................................................................14
Contacting Allied Telesis .....................................................................................................................................................15
Chapter 1: Overview ........................................................................................................................................................ 17
x950 Switches ...................................................................................... .. ... ..........................................................................18
Features ..............................................................................................................................................................................20
Hardware Features.......................................................................................................................................................20
XEM2 Ethernet Line Cards...................................................... ... .................................... ... ...........................................20
Management Software and Interfaces .........................................................................................................................21
Management Methods..................................................................................................................................................21
Management Panel ......................................................................................................................................................21
Power Supplies ............................................................................................................................................................21
Ports 1 to 24 on the AT-x950-28XSQ Switch......................................................................................................................22
SFP and SFP+ Transceivers........................................................................................................................................22
LEDs.............................................................................................................................................................................23
Ports 1 to 24 on the AT-x950-28XTQm Switch....................................................................................................................24
Cable Requirements.....................................................................................................................................................24
LEDs.............................................................................................................................................................................25
Ports 25 to 37......................................................................................................................................................................26
QSFP28 Transceivers..................................................................................................................................................26
QSFP+ Transceivers....................................................................................................................................................26
Breakout Cables...........................................................................................................................................................26
LEDs.............................................................................................................................................................................27
Port Numbering ................................ ... ...................................................................... ...................................................28
XEM2 Ethernet Line Cards............................................ ... ... .................................... ... .........................................................30
AT-XEM2-12XT Line Card...................................................................................................................................................32
RJ-45 Ports ..................................................................................................................................................................32
LEDs.............................................................................................................................................................................33
AT-XEM2-12XTm Line Card........................................................ ..................................... ...................................................34
AT-XEM2-12XS Line Card...................................................................................................................................................36
Transceivers.................................................................................................................................................................36
LEDs.............................................................................................................................................................................37
AT-XEM2-4QS Line Card............. .. ... ..................................... .. ... ..................................... .. .................................................38
Transceivers.................................................................................................................................................................38
LEDs.............................................................................................................................................................................38
AT-XEM2-1CQ Line Card....................................................................................................................................................40
Transceivers.................................................................................................................................................................40
LEDs.............................................................................................................................................................................40
Management Panel .............................................................................................................................................................42
USB Port ........................................................ ................................. ... ... ........................ ...............................................42
NET MGMT Ethernet Management Port......................................................................................................................43
Console (RS-232) Port.................................................................................................................................................44
Switch ID LED..............................................................................................................................................................44
eco-friendly Button .......................................................................................................................................................45
Optional Direct Attach Cables..............................................................................................................................................46
AT-PWR600 Power Supply .................................................................................................................................................47
LEDs.............................................................................................................................................................................48
AT-FAN05 Cooling Fan.......................................................................................................................................................49
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Contents
Designating Ports in the Command Line Interface .............................................................................................................50
Software and Hardware Releases...................................................................................................................................... 52
Chapter 2: Virtual Chassis Stacking ..............................................................................................................................53
Overview............................................................................................................................................................................. 54
Stacking Guidelines............................................................................................................................................................ 55
Stack Trunks....................................................................................................................................................................... 56
Ports 1 to 24................................................................................................................................................................ 56
Ports 25 to 37 with 40Gbps Transceivers.................................................................................................................... 60
Ports 25 to 37 with 100Gbps Transceivers.................................................................................................................. 61
XEM2 Line Cards ................................................................................................................ ........................................ 63
Unsupported Trunks.................................................................................................................................................... 65
Master and Member Switches............................................................................................................................................ 69
Selection of the Master Switch.................................................................................................................................... 69
Switch ID Numbers.............................................................................................................................................................70
Optional Feature Licenses.................................................................................................................................................. 71
Planning a Stack............................................. .................................... ................................................................................72
Stack Worksheet.................................................................................................................................................................73
Chapter 3: Beginning the Installation ............................................................................................................................77
Reviewing Safety Precautions............................................................................................................................................ 78
Installation Options............................................................................................................................................................. 83
Choosing a Site for the Chassis.......................................................................................................................................... 84
Unpacking the Switch .........................................................................................................................................................85
Verifying the Accessory Kit................................................................................................................................................. 89
Unpacking the AT-PWR600 AC Power Supply................................................................................................................... 91
Chapter 4: Installing Power Supplies and Optional XEM2 Line Card .........................................................................95
Installing AT-PWR600 AC Power Supplies......................................................................................................................... 96
Installing an Optional XEM2 Ethernet Line Card ..............................................................................................................100
Chapter 5: Installing the Switch on a Table .................................................................................................................105
Chapter 6: Installing the Switch in an Equipment Rack .............................................................................................109
Beginning the Installation.................................................................................................................................................. 110
Required Items..................................................................................................... ..................................................... 110
Switch Orientations in the Equipment Rack...............................................................................................................110
Removing the Bumper Feet.............................................................................................................................................. 112
Installing the Switch..........................................................................................................................................................113
Chapter 7: Installing the Switch on a Wall ...................................................................................................................117
Switch Orientations on a Wall........................................................................................................................................... 118
Recommended Minimum Wall Area Dimensions..............................................................................................................119
Plywood Base for a Wall with Wooden Studs................................................................................................................... 121
Installation Guidelines....................................................................................................................................................... 123
Tools and Material..................................................................................................................................................... 123
Installing the Plywood Base.............................................................................................................................................. 125
Installing the Switch on the Plywood Base ....................................................................................................................... 126
Installing the Switch on a Concrete Wall........................................................................................................................... 129
Chapter 8: Configuring the Master Switch ..................................................................................................................133
Command Summary............................................... ... .................................... ................................................................... 134
PLATFORM PORTMODE INTERFACE....................................................................................................................134
STACKPORT............................................................................................................................................................. 135
STACK ENABLE ....................................................................................................................................................... 135
STACK PRIORITY..................................................................................................................................................... 136
STACK RENUMBER................................................................................................................................................. 136
SWITCH PROVISION........................................................................................... .................... .................................136
Powering On a Switch............................... ... ... .................................... ..............................................................................138
Starting a Local Management Session.............................................................................................................................141
General Steps for the Master Switch................. ........................................................................ ....................................... 143
Configuring the Master Switch - Part I .............................................................. ... ............................................................. 145
Configuring the Master Switch - Part II............................................................. ... ............................................................. 148
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AT-x950-28XSQ Switch and VCStack Installation Guide
Verifying the Master Switch............... ... ... ... .......................................................................................................................151
What to Do Next................................................................................................................................................................153
Chapter 9: Configuring Member Switches ..................................................................................................................155
General Steps for Member Switches.................................................................................................................................156
Configuring a Member Switch - Part I................................................................................................................................158
Configuring a Member Switch - Part II...............................................................................................................................161
Verifying a Member Switch................................................................................................................................................163
What to Do Next................................................................................................................................................................165
Chapter 10: Powering On and Verifying the Stack .....................................................................................................167
Powering on the Stack.......................................................................................................................................................168
Verifying the Stack......................................................... ... ... .................................... ... .......................................................169
Chapter 11: Cabling the Networking Ports ..................................................................................................................171
Cabling Twisted Pair Ports ................................................................................................................................................172
Guidelines to Handling Twisted Pair or Fiber Optic Transceivers .....................................................................................173
Installing Transceivers.......................................................................................................................................................174
Installing Direct Attach Cables...........................................................................................................................................180
Chapter 12: Replacing Modules ................................................................................................................................... 183
Replacing XEM2 Ethernet Line Cards...............................................................................................................................184
Replacing PWR600 AC Power Supplies ...........................................................................................................................189
Replacing FAN05 Modules................................................................................................................................................194
Removing Fan Modules .............................................................................................................................................194
Installing Fan Modules ...............................................................................................................................................196
Chapter 13: Troubleshooting ........................................................................................................................................ 199
Appendix A: Technical Specifications .........................................................................................................................205
Physical Specifications......................................................................................................................................................206
Environmental Specifications.............................................................................................................................................208
Power Specifications.........................................................................................................................................................209
Certifications......................................................................................................................................................................212
RJ-45 Twisted Pair Port Pinouts on the AT-XEM2-12XT and AT-XEM2-12XTm Line Cards............................................213
RJ-45 Style Serial Console Port Pinouts...........................................................................................................................214
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Contents
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Figures

Figure 1: Front Panels of the x950 Switches........................................................................................................................18
Figure 2: Rear Panel of the x950 Switches..........................................................................................................................19
Figure 3: Link and Activity LEDs for Ports 1 to 24................................................................................................................23
Figure 4: Link and Activity LEDs for Ports 1 to 24 on the AT-x950-28XTQm Switch ...........................................................25
Figure 5: QSFP-4SFP10G-3CU or QSFP-4SFP10G-5CU Copper Breakout Cable ............................................................26
Figure 6: ET3-MPO08-4LC-5 or ET3-MPO08-4LC-10 Fiber Optic Breakout Cable....................................................... ......27
Figure 7: LEDs for Ports 25 to 37.........................................................................................................................................27
Figure 8: XEM2 Ethernet Line Cards....................................................................................................................................30
Figure 9: AT-XEM2-12XT Line Card.....................................................................................................................................32
Figure 10: AT-XEM2-12XTm Line Card................................................................................................................................34
Figure 11: AT-XEM2-12XS Line Card..................................................................................................................................36
Figure 12: AT-XEM2-4QS Line Card....................................................................................................................................38
Figure 13: AT-XEM2-1CQ Line Card....................................................................................................................................40
Figure 14: Management Panel .............................................................................................................................................42
Figure 15: Switch ID LED with the eco-friendly Mode Disabled ...........................................................................................44
Figure 16: Switch ID LED with the eco-friendly Mode Enabled............................................................................................ 45
Figure 17: AT-PWR600 Power Supply.................................................................................................................................47
Figure 18: AT-FAN05 Fan Module........................................................................................................................................49
Figure 19: PORT Parameter in the Command Line Interface...............................................................................................50
Figure 20: Slot Numbers for Port Numbering .......................................................................................................................50
Figure 21: Example Stacks of AT-x950-28XSQ Switches with Trunks of 10Gbps Ports......................................................58
Figure 22: Example Stacks of AT-x950-28XTQm Switches with Trunks of 10Gbps Ports...................................................59
Figure 23: Example Stacks of Two Switches with Trunk Ports 25 to 37 and 40Gbps Links.................................................60
Figure 24: Example Stacks of Three or Four Switches with Trunk Ports 25 to 37 and 40Gbps Links .................................61
Figure 25: Example Stacks with Trunks Ports 33 to 37 and 100Gbps Links.........................................................
Figure 26: Example Trunk Using AT-XEM2-12XT Line Cards .............................................................................................63
Figure 27: Example Trunk Using AT-XEM2-12XS Line Cards .............................................................................................64
Figure 28: Example Trunk Using AT-XEM2-4QS Line Cards...............................................................................................64
Figure 29: Unsupported Trunk with Different Numbers of Links Between Switches ............................................................65
Figure 30: Unsupported Trunk with Mixed Cables................................................................................................................65
Figure 31: Unsupported Trunk with Both Base and XEM2 Line Card Ports............... ... .......................................................66
Figure 32: Unsupported Trunk of Connected Base and Line Card Ports .............................................................................66
Figure 33: Unsupported Trunk with Only One Link Between Switches................................................................................67
Figure 34: Unsupported Trunk with Different Port Speeds...................................................................................................67
Figure 35: Not Recommended Stack Trunk of AT-XEM2-1CQ Line Cards..........................................................................67
Figure 36: Unsupported Trunk with a 10Gbps Breakout Cable............................................................................................68
Figure 37: Unsupported Trunk with Intermediary Network Devices .....................................................................................68
Figure 38: Installation Options..............................................................................................................................................83
Figure 39: Removing Accessories........................................................................................................................................85
Figure 40: Removing the Shipping Partition.........................................................................................................................86
Figure 41: Lifting the Switch from the Shipping Box.............................................................................................................87
Figure 42: Removing the Switch from the Shipping End-caps and Protective Bag..................... .........................................87
Figure 43: Accessory Kit.......................................................................................................................................................89
Figure 44: Removing the Power Cord and Documents from the AT-PWR600 AC Power Supply........................................91
Figure 45: Removing the Partition from the AT-PWR600 AC Power Supply Shipping Box .................................................92
Figure 46: Removing the Power Supply from the Shipping Box...........................................................................................93
Figure 47: Removing the Power Supply from the Shipping End-caps and Protective Bag ..................................................93
Figure 48: Removing the Blank Power Supply Panel from Slot PSU B................................................................................97
Figure 49: Sliding the AT-PWR600 AC Power Supply into the Switch................................................................................. 98
...............62
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Figures
Figure 50: Seating the Power Supply on the Internal Connector..........................................................................................99
Figure 51: Removing the Blank Line Card Cover ...............................................................................................................100
Figure 52: Removing the Ethernet Line Card from the Anti-static Bag...............................................................................101
Figure 53: Sliding the Ethernet Line Card into the Slot.......................................................................................................101
Figure 54: Seating the Ethernet Line Card in the Expansion Slot................................... ... .................................................102
Figure 55: Tightening the Two Captive Screws on the Ethernet Line Card............... .. ... ....................................................103
Figure 56: Parts of the Bumper Feet...................................................................................................................................105
Figure 57: Holes for Bumper Feet.......................................................................................................................................106
Figure 58: Inserting the Rivet Housing into the Bumper Foot.............................................................................................106
Figure 59: Placing the Bumper Foot on a Base Corner Hole..............................................................................................107
Figure 60: Inserting the Rivet into the Bumper Foot...........................................................................................................107
Figure 61: Bracket Holes on the Switch..............................................................................................................................110
Figure 62: Switch Orientations in an Equipment Rack........................................................................................................111
Figure 63: Removing the Bumper Feet...............................................................................................................................112
Figure 64: Attaching the Equipment Rack Brackets ...........................................................................................................114
Figure 65: Installing the Switch in an Equipment Rack.......................................................................................................114
Figure 66: Positions of the Switch on the Wall....................................................................................................................118
Figure 67: Minimum Wall Area Dimensions with the Front Panel on the Left.....................................................................119
Figure 68: Minimum Wall Area Dimensions with the Front Panel on the Right..................................................................120
Figure 69: Switch on the Wall with a Plywood Base...........................................................................................................121
Figure 70: Steps to Installing the Switch with a Plywood Base...........................................................................................122
Figure 71: Installing the Brackets to the Switch for Wall Installation...................................................................................126
Figure 72: Attaching the Switch to the Plywood Base ........................................................................................................127
Figure 73: Marking the Locations of the Bracket Holes on a Concrete Wall............................................ ... ........................130
Figure 74: Installing the Switch on a Concrete Wall ...........................................................................................................131
Figure 75: Connecting the AC Power Cord.........................................................................................................................138
Figure 76: Securing the Power Cord with the Restraining Strap ........................................................................................139
Figure 77: Connecting the Power Cord to an AC Power Source........................................................................................139
Figure 78: Connecting the Management Cable to the Console RS-232 Port ............................................. ... .....................141
Figure 79: User Exec Mode Prompt...............................................................................................
Figure 80: Powering Off the Switch....................................................................................................................................153
Figure 81: SHOW STACK Command.................................................................................................................................169
Figure 82: Handle on 100Gbps Transceivers for AT-XEM2-1CQ Line Cards ....................................................................173
Figure 83: SP10T Transceivers..........................................................................................................................................175
Figure 84: Installing an SFP or SFP+ Transceiver .............................................................................................................177
Figure 85: Installing 40Gbps Fiber Optic Transceivers in AT-XEM2-4QS Line Cards........................................................178
Figure 86: Installing 100Gbps QSFP28 Transceivers in Base Ports 25, 29, 33, 37...........................................................178
Figure 87: Installing 100Gbps QSFP28 Transceivers in AT-XEM2-1C Q Line Cards.........................................................179
Figure 88: Installing SP10TW Direct Attach Cables ...........................................................................................................180
Figure 89: Attaching QSFPCU Cables................................................................................................................................181
Figure 90: Loosening the Screws on the Ethernet Line Card .............................................................................................185
Figure 91: Disconnecting an Ethernet Line Card from the Switch.................... ... .................................. .. ...........................186
Figure 92: Sliding an Ethernet Line Card from the Switch..................................................................................................186
Figure 93: Placing the Ethernet Line Card in its Anti-static Bag .................................. ... ....................................................187
Figure 94: Installing the Line Card Blank Cover .................................................................................................................187
Figure 95: Tightening the Two Screws on the Line Card Blank Panel..................................................... ...........................188
Figure 96: Disconnecting the AC Power Cord from the Power Source .............................................. ... .............................189
Figure 97: Opening the Restraining Strap on the Power Supply ........................................................................................190
Figure 98: Disconnecting the Power Cord from the Power Supply.....................................................................................190
Figure 99: Removing the Power Supply .............................................................................................................................191
Figure 100: Removing a Power Supply..............................................................................................................................192
Figure 101: Installing the Blank Power Supply Cover............................................................................
Figure 102: Loosening the Screws on the Fan Module......................................................................................................194
Figure 103: Disconnecting the FAN05 Module from the Switch .........................................................................................195
Figure 104: Sliding the Fan Module from the Switch..........................................................................................................195
Figure 105: Removing the Fan Module from the Shipping Container.................................................................................196
Figure 106: Aligning the FAN05 Module in the Switch Slot ................................................................................................197
Figure 107: Seating the FAN05 Module on the Internal Connector....................................................................................197
Figure 108: Tightening the Two Captive Screws on the FAN05 Module............................................................................198
Figure 109: Pin Layout (Front View) of Ports on AT-XEM2-12XT and AT-XEM2-12XTm Line Cards................................213
.....................................142
.............................193
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Tables

Table 1: Link and Activity Status LEDs for Ports 1 to 24 .....................................................................................................23
Table 2: Twisted Pair Ports 1 to 24 on the AT-x950-28XTQm Switch .................................................................................24
Table 3: Link and Activity LEDs for Ports 1 to 24 on the AT-x950-28XTQm Switch ............................................................25
Table 4: Link and Activity Status LEDs for 40Gbps QSFP+ or 100Gbps QSFP28 Transceivers ........................................27
Table 5: Link and Activity Status LEDs for 10Gbps Breakout Cables ................................................ ... ... ...........................28
Table 6: Port Numbering for Ports 25 to 37 .........................................................................................................................29
Table 7: XEM2 Ethernet Line Cards ....................................................................................................................................30
Table 8: Twisted Pair Ports on the AT-XEM2-12XT Line Card ............................................................................................32
Table 9: Port Link and Activity LEDs on the AT-XEM2-12XT Line Card .............................................................................33
Table 10: Twisted Pair Ports on the AT-XEM2-12XTm Line Card .......................................................................................34
Table 11: Link and Activity LEDs on the AT-XEM2-12XTm Line Card ................................................................................35
Table 12: Port Link and Activity LEDs on the AT-XEM2-12XS Line Card ................. ... .................................... ...................37
Table 13: Port Link and Activity Status LEDs on the AT-XEM2-4QS Line Card ..................................................................39
Table 14: Link and Activity Status LEDs for 10Gbps Breakout Cables ...............................................................................39
Table 15: Port Link and Activity Status LED on the AT-XEM2-1CQ Line Card ...................................................................40
Table 16: NET MGMT Port LED ..........................................................................................................................................43
Table 17: Optional Direct Attach Cables ..............................................................................................................................46
Table 18: LEDs on the AT-PWR600 Power Supply .............................................................................................................48
Table 19: PORT Parameter Format .....................................................................................................................................50
Table 20: Software and Hardware Releases ......................................................................................................................52
Table 21: Maximum Number of Trunk Ports Per XEM2 Line Card ......................................................................................63
Table 22: Stacking Worksheet .............................................................................................................................................73
Table 23: Stacking Worksheet Columns ..............................................................................................................................74
Table 24: Example of a Completed Stack Worksheet ......................................................................................................... 75
Table 25: Configuring the Master Switch - Part I ...............................................................................................................145
Table 26: Configuring the Master Switch- Part II ...............................................................................................................148
Table 27: Verifying the Master Switch ...............................................................................................................................151
Table 28: Configuring a Member Switch - Part I ................................................................................................................158
Table 29: Configuring a Member Switch - Part II ...............................................................................................................161
Table 30: Verifying a Member Switch ................................................................................................................................163
Table 31: Transceivers for the Base Transceiver Slots ................................................... .. ... .............................................174
Table 32: Transceivers for XEM2 Ethernet Line Cards .....................................................................................................175
Table 33: Product Dimensions ...........................................................................................................................................206
Table 34: Product Weights ................................................................................................................................................206
Table 35: Ventilation Requirements ................................................................................................................................... 207
Table 36: Environmental Specifications .............................................................................................................................208
Table 37: Maximum Power Consumptions (Watts) ...........................................................................................................209
Table 38: Typical Power Savings in eco-friendly Mode (Watts) ........................................................................................209
Table 39: Input Voltages ....................................................................................................................................................210
Table 40: Maximum Power Supply Efficiency (Based on 100V Input Voltage) .................................................................210
Table 41: Heat Dissipations (British Thermal Units/Hour) .................................................................................................210
Table 42: Product Certifications .........................................................................................................................................212
Table 43: Pin Signals for AT-XEM2-12XT and AT-XEM2-12XTm Line Cards ..................................................................213
Table 44: RJ-45 Style Serial Console Port Pin Signals .....................................................................................................214
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Tables
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Page 13

Preface

This guide contains the installation instructions for the x950 Series of advanced Layer 3+ Ethernet switches. The instructions explain how to build a virtual stack of up to four units with the Virtual Chassis Stacking (VCStack) feature. For instructions on how to install the switches as stand­alone devices, refer to the x950 Series Installation Guide for Stand-alone Switches.
This preface contains the following sections:
“Document Conventions” on page 14“Contacting Allied Telesis” on page 15
13
Page 14
Preface
Note
Caution
Warning

Document Conventions

This document uses the following conventions:
Notes provide additional information.
Cautions inform you that performing or omitting a specific action may result in equipment damage or loss of data.
Warnings inform you that performing or omitting a specific action may result in bodily injury.
14
Page 15

Contacting Allied Telesis

For 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. The page has links to the following services:
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.
x950 Series Installation Guide for VCStack
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/contact and select your region.
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Preface
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Chapter 1

Overview

The chapter contains the following sections:
“x950 Switches” on page 18“Features” on page 20“Ports 1 to 24 on the AT-x950-28XSQ Switch” on page 22“Ports 1 to 24 on the AT-x950-28XTQm Switch” on page 24“Ports 25 to 37” on page 26“XEM2 Ethernet Line Cards” on page 30“AT-XEM2-12XT Line Card” on page 32“AT -XEM2 - 12XTm Line Ca rd” on p ag e 34“AT-XEM2-12XS Line Card” on page 36“AT-XEM2-4QS Line Card” on page 38“AT-XEM2-1CQ Line Card” on page 40“Management Panel” on page 42“Optional Direct Attach Cables” on page 46“AT-PWR600 Power Supply” on page 47“AT -FAN05 Cooling Fan” on page 49“Designating Ports in the Command Line Interface” on page 50“Software and Hardware Releases” on page 52
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Chapter 1: Overview
XEM2 Line Card
Expansion Slot
Ports 25, 29, 33, 37:
40Gbps or 100Gbps
Transceivers, or
10Gbps Breakout Cables
Management
Panel
Ports 1 to 24:
1Gbps SFP or 10Gbps
SFP+ Transceivers
XEM2 Line Card
Expansion Slot
Ports 25, 29, 33, 37:
40Gbps or 100Gbps
Transceivers, or
10Gbps Breakout Cables
Management
Panel
Ports 1 to 24:
100Mbps, 1/2.5/5/10Gbps
Twisted Pair
AT-x950-28XTQm Switch
AT-x950-28XSQ Switch

x950 Switches

The front panels of the switches are shown in Figure 1.
Figure 1. Front Panels of the x950 Switches
The rear panel is shown in Figure 2 on page 19.
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Page 19
x950 Series Installation Guide for VCStack
Two AT-FAN05 Cooling Fan
Modules
Two Slots for AT-PWR600
Power Supply Modules
Figure 2. Rear Panel of the x950 Switches
19
Page 20
Chapter 1: Overview

Features

The main hardware features of the x950 Switches are listed here.
Hardware
Features
The switches have the following hardware features:
1RU height24 ports on the AT-x950-28XSQ Switch for 1Gbps SFP or 10Gbps
SFP+ transceivers. Refer to “Ports 1 to 24 on the AT-x950-28XSQ Switch” on page 22.
24 twisted pair ports on the AT-x950-28XTQm Switch with speeds
of 1/2.5/5/10Gbps. Refer to “Ports 1 to 24 on the AT-x950­28XTQm Switch” on page 24.
Four ports for 40Gbps QSFP+ or 100Gbps QSFP28 transceivers,
or 10Gbps breakout cables. Refer to “Ports 25 to 37” on page 26.
One expansion slot for an optional XEM2 Ethernet line card. Refer
to “XEM2 Ethernet Line Cards” on page 30.
The switches supports two power supplies for primary and
redundant power. Refer to “AT-PWR600 Power Supply” on page 47.
The units come with two pre-installed fan modules. Refer to “AT-
FAN05 Cooling Fan” on page 49.
The switches come with brackets for standard 19-inch equipment
racks or wall installation.
XEM2 Ethernet
Line Cards
The XEM2 Ethernet line cards, power supplies, and fan modules
are hot-swappable.
The XEM2 Ethernet line cards are listed here:
AT-XEM2-12XT Card features 12 twisted pair ports with speeds of
100Mbps and 1/10Gbps, and RJ-45 connectors. Refer to “AT­XEM2-12XT Line Card” on page 32.
AT-XEM2-12XTm Card features 12 twisted pair ports with speeds
of 100Mbps and 1/2.5/5/10Gbps, and RJ-45 connectors. Refer to “AT-XEM2-12XTm Line Card” on page 34.
AT-XEM2-12XS Card features 12 ports for 1Gbps SFP or 10Gbps
SFP+ transceivers. Refer to “AT-XEM2-12XS Line Card” on page 36.
AT-XEM2-4QS Card features four ports for 40Gbps QSFP+
transceivers. Refer to “AT-XEM2-4QS Line Card” on page 38.
AT-XEM2-1CQ Card features one port for the 100Gbps QSFP28
transceiver. Refer to “AT-XEM2-1CQ Line Card” on page 40.
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Line cards are ordered separately. Refer to the product data sheet on the Allied Telesis web site for a list of approved transceivers.
Management
Software and
Interfaces
Management
Methods
Management
Panel
Here are the management software and interfaces:
AlliedWare Plus management software.Command line interface, available locally through the Console port
or remotely over the network.
Web browser interface available remotely over the network.
The AlliedWare Plus management software comes pre-installed on the switch.
You can manage the switch as follows:
Command line interface accessed locally through the Console port
or remotely using Telnet or Secure Shell.
Remote access using the web browser interface and HTTP.Remote access with SNMPv1, v2c, or v3.
The pre-installed management panel has the following features:
Console RS-232 port for local management (no IP address
required),
USB 2.0 port for storing backup copies of system configuration
files, updating management software, and other management functions.
An eco-friendly button for turning off the port and system LEDs to
reduce power consumption.
Network management port for initial configuration and
maintenance access to the chassis.
Power Supplies The switch has slots for two power supplies on the back panel. The switch
can be powered by a single power supply. Adding a second power supply provides power redundancy. Power supplies are ordered separately. Refer to “AT-PWR600 Power Supply” on page 47.
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Chapter 1: Overview
Note

Ports 1 to 24 on the AT-x950-28XSQ Switch

Ports 1 to 24 on the AT-x950-28XSQ Switch support 1Gbps SFP and 10Gbps SFP+ transceivers.
SFP and SFP+
Transceivers
Listed here are examples of 1Gbps SFP transceivers:
AT-SPSX and LR short and long distance transceivers using multi-
mode or single mode fiber optic cable.
AT-SPTX transceiver series with RJ-45 connector for twisted pair
cable.
AT-SPEX transceivers with a maximum distance of two kilometers
with multi-mode fiber optic cable.
Listed here are examples of SFP+ 10Gbps transceivers:
AT-SP10SR, LR, ER and ZR series of short or long distance
transceivers using multi-mode or single mode fiber optic cable.
AT-SP10TW series of direct attach cables in lengths up to seven
meters.
AT-SP10BD series of bidirectional transceivers for single mode
fiber optic cable with maximum distances of 10 to 40 kilometers
AT-SP10T transceiver with RJ-45 connector for links up to 20
meters at 10Gbps with Category 6a twisted pair cable, or 100 meters at 1Gbps.
AT-SP10LRM Long Reach Multimode transceiver for OM1 multi-
mode fiber optic links up to 220 meters.
Industrial (-40 to 85° C) and extended (-40 to 105° C) temperature transceivers are available.
Here are transceiver guidelines:
The ports do not support 100Mbps-FX transceivers.They support full-duplex mode only.You can set the port speeds with Auto-Negotiation or manually.
The default is Auto-Negotiation.
Transceivers must be purchased separately. For a list of supported transceivers, refer to the product data sheet on the Allied Telesis web site.
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Top Transceiver Slot LED
Bottom Transceiver Slot LED
LEDs The LEDs are located between the ports. Each port has one LED. Refer to
Figure 3.
Figure 3. Link and Activity LEDs for Ports 1 to 24
The LEDs displays link and activity status. The possible LED states are described in Table 1 on page 23.
Table 1. Link and Activity Status LEDs for Ports 1 to 24
State Description
Solid Green The transceiver has established a 10Gbps
link to a network device.
Flashing Green The transceiver is transmitting or receiving
data in 10Gbps.
Solid Amber The transceiver has established a 1Gbps
link to a network device.
Flashing Amber The transceiver is transmitting or receiving
data in 1Gbps.
Off Possible causes of this state are listed
here:
- The slot is empty.
- The transceiver has not established a link to a network device.
- The LEDs are turned off. To turn on the LEDs, use the eco-friendly button in the management panel.
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Chapter 1: Overview
Note

Ports 1 to 24 on the AT-x950-28XTQm Switch

The specifications for twisted pair ports 1 to 24 on the AT-x950-28XTQm Switch are listed in Table 2.
Table 2. Twisted Pair Ports 1 to 24 on the AT-x950-28XTQm Switch
Specification Description
Port Speed Here are the supported speeds:
- 100Mbps
- 1/2.5/5/10Gbps Here are the guidelines to setting port
speeds:
- 100Mbps can be set manually or with Auto-Negotiation.
Cable
Requirements
- 1/2.5/5/10Gbps require Auto­Negotiation.
The default port setting is Auto-
Negotiation. Duplex Mode Full-duplex only Maximum Distance 100 meters (328 feet) Connector 8-pin RJ-45
Network devices connected to the ports must be IEEE 802.3u compliant.
The cable requirements are listed here:
100Mbps - Standard TIA/EIA 568-B-compliant Category 3
unshielded cabling.
1/2.5/5Gbps - Standard TIA/EIA 568-A-compliant Category 5 or
TIA/EIA 568-B-compliant Enhanced Category 5 (Cat 5e) unshielded cabling.
10Gbps -Standard TIA/EIA 568-C-compliant Category 6a
unshielded cabling.
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Top Port LED Bottom Port LED
LEDs This section explains the LEDs for the 1/2.5/5/10Gbps twisted pair ports
on the AT-x950-28XTQm Switch. Each port has one LED that displays link and activity information. The LEDs are shown in Figure 4.
Figure 4. Link and Activity LEDs for Ports 1 to 24 on the AT-x950-28XTQm
Switch
The states of the link and activity LEDs are described in Table 3. Table 3. Link and Activity LEDs for Ports 1 to 24 on the AT-x950-28XTQm
State Description
Solid Green The port has established a 2.5Gbps,
Flashing Green The port is transmitting or receiving data
Solid Amber The port has established a 100Mbps or
Flashing Amber The port is transmitting or receiving data
Off Possible causes of this state are listed
Switch
5Gbps, or 10Gbps link to a network device.
at 2.5Gbps, 5Gbps or 10Gbps.
1Gbps link to a network device.
at 100Mbps or 1Gbps.
here:
- The port has not established a link with another network device.
- The LEDs are turned off. To turn on the LEDs, use the eco-friendly button.
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Chapter 1: Overview

Ports 25 to 37

Ports 25, 29, 33, and 37 support the following types of transceivers and cables:
100Gbps QSFP28 transceivers40Gbps QSFP+ transceivers10Gbps breakout cables
QSFP28
Transceivers
The ports support the following 100Gbps QSFP28 transceivers:
QSFP28SR4 transceiver - Maximum operating distance of 70m
(230 ft) or 100m (328 ft) with 12-strand OM3 or OM4 fiber optic cable, respectively. Requires an MPO pluggable optical connector.
QSFP28LR4 transceiver - Operating range of 2m (6.6 ft) to 10km
(6.2 mi) with single-mode fiber optic cable. Requires a duplex LC connector.
QSFP28-1CU and QSFP28-3CU direct attach cables - Lengths of
one and three meters, respectively.
QSFP+
Transceivers
The ports support the following 40Gbps QSFP+ transceivers:
QSFPSR4 transceiver - Maximum operating distance of 150m
(492 ft) with 12-strand OM4 fiber optic cable.
QSFPLR4 transceiver - Maximum operating distance of 2m (6.6 ft)
to 10km (6.2 mi) with single-mode fiber optic cable.
QSFP1CU and QSFP3CU direct attach cables - Lengths of 1 and
3 meters, respectively.
Breakout Cables The ports also support copper and fiber optic breakout cables. The cables
convert them from 40Gbps ports to four SFP+ 10Gbps ports. The model names of the copper cables are QSFP-4SFP10G-3CU and QSFP­4SFP10G-5CU. The cables are in lengths of 3 and 5 meters, respectively. Refer to Figure 5.
26
Figure 5. QSFP-4SFP10G-3CU or QSFP-4SFP10G-5CU Copper
Breakout Cable
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x950 Series Installation Guide for VCStack
Top Transceiver Slot
LED
Bottom Transceiver Slot LED
The fiber optic breakout cables are ET3-MPO08-4LC-5 and ET3-MPO08­4LC-10, in lengths of 5 and 10 meters, respectively, with duplex LC connectors. Refer to Figure 6.
Figure 6. ET3-MPO08-4LC-5 or ET3-MPO08-4LC-10 Fiber Optic Breakout
Cable
LEDs The ports have one link and activity status LED each. Refer to Figure 7.
Figure 7. LEDs for Ports 25 to 37
The states of the LEDs for 40Gbps QSFP+ or 100Gbps QSFP28 transceivers are defined in Table 4.
Table 4. Link and Activity Status LEDs for 40Gbps QSFP+ or 100Gbps
QSFP28 Transceivers
State Description
Solid Green The transceiver has established a
100Gbps link to a network device.
Flashing Green The transceiver is transmitting or receiving
data at 100Gbps.
Solid Amber The transceiver has established a 40Gbps
link to a network device.
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Chapter 1: Overview
Table 4. Link and Activity Status LEDs for 40Gbps QSFP+ or 100Gbps
QSFP28 Transceivers (Continued)
State Description
Flashing Amber The transceiver is transmitting or receiving
data at 40Gbps.
Off Possible causes of this state are listed
here:
- The transceiver slot is empty.
- The transceiver has not established a link to a network device.
- The LEDs are turned off. To turn on the LEDs, use the eco-friendly button.
The LED states for breakout cables are described in Table 5.
Table 5. Link and Activity Status LEDs for 10Gbps Breakout Cables
State Description
Solid Amber At least one of the four ports on the
breakout cable has established a 10Gbps link to a network device.
Flashing Amber At least one of the four ports on the
breakout cable is sending or receiving data.
Off Possible causes of this state are listed
here:
- The transceiver slot is empty.
- None of the ports on the breakout cable have established links to network devices.
- The LEDs are turned off. To turn on the LEDs, use the eco-friendly button.
Port Numbering The transceiver ports are numbered 25, 29, 33, and 37. Table 6 on
page 29 lists the port numbering system for the ports when the switch is operating in a stack with the VCStack feature:
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x950 Series Installation Guide for VCStack
Table 6. Port Numbering for Ports 25 to 37
Port
With Fiber Optic
Transceiver or
Direct Attach Cable
With Breakout
Cable
25 portn.0.25 portn.0.25
portn.0.26 portn.0.27 portn.0.28
29 portn.0.29 portn.0.29
portn.0.30 portn.0.31 portn.0.32
33 portn.0.33 portn.0.33
portn.0.34 portn.0.35 portn.0.36
37 portn.0.37 portn.0.37
portn.0.38 portn.0.39 portn.0.40
The “n” variable is the switch’s ID number, displayed on the switch ID LED on the front panel. For more information, refer to “Designating Ports in the Command Line Interface” on page 50.
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Chapter 1: Overview
AT-XEM2-4QS AT-XEM2-1CQ AT-XEM2-12XS AT-XEM2-12XT AT-XEM2-12XTm

XEM2 Ethernet Line Cards

The x950 Switches have one expansion slot on the front panel for an optional XEM2 Ethernet line card. The cards are shown in Figure 8 and described in Table 7.
Figure 8. XEM2 Ethernet Line Cards Table 7. XEM2 Ethernet Line Cards
Line Card Description
AT-XEM2-12XT 12 twisted pair ports with RJ-45
connectors that support the following speeds:
- 100Mbps (requires AlliedWare Plus v5.4.9-0 or later.)
- 1/10Gbps
Refer to “AT-XEM2-12XT Line Card” on page 32.
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x950 Series Installation Guide for VCStack
Table 7. XEM2 Ethernet Line Cards (Continued)
Line Card Description
AT-XEM2-12XTm 12 twisted pair ports with RJ-45
connectors that support the following speeds:
- 100Mbps
- 1/2.5/5/10Gbps Refer to “AT-XEM2-12XTm Line Card” on
page 34.(This card requires AlliedWare Plus v5.4.9-0 or later.)
AT-XEM2-12XS 12 ports that support the following types of
transceivers:
- 1Gbps SFP
- 10Gbps SFP+
- 10Gbps AT-SP10TW direct connect twinax cables
Refer to “AT-XEM2-12XS Line Card” on page 36.
AT-XEM2-4QS Four ports that support the following types
of transceivers
- 40Gbps QSFP+ transceivers
- 40Gbps AT-QSFPCU direct connect cables
- QSFP-4SFP10G-3CU and QSFP­4SFP10G-5CU 40Gbps to 10Gbps breakout cables
Refer to “AT-XEM2-4QS Line Card” on page 38.
AT-XEM2-1CQ One port for the 100Gbps QSFP28
transceiver or QSFP28-1CU or QSFP28­3CU direct attach cable. Refer to “AT­XEM2-1CQ Line Card” on page 40.
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Chapter 1: Overview

AT-XEM2-12XT Line Card

The AT-XEM2-12XT Line Card is shown in Figure 9.
Figure 9. AT-XEM2-12XT Line Card
RJ-45 Ports The card has 12 twisted pair ports with standard 8-pin RJ-45 ports. The
specifications of the ports are listed in Table 8.
Table 8. Twisted Pair Ports on the AT-XEM2-12XT Line Card
Specification Description
Port Speed The ports support the following speeds:
- 100Mbps (Requires AlliedWare Plus v5.4.9-0 or later)
- 1/10Gbps
The ports do not support 10Mbps.
Duplex Mode Full-duplex only
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Table 8. Twisted Pair Ports on the AT-XEM2-12XT Line Card (Continued)
Specification Description
Cabling The minimum cable requirements are:
- 100Mbps - Standard TIA/EIA 568-B­compliant Category 3 unshielded cabling.
- 1Gbps - Standard TIA/EIA 568-A-
compliant Category 5 or TIA/EIA 568-B­compliant Enhanced Category 5 (Cat 5e) unshielded cabling.
- 10Gbps -Standard TIA/EIA 568-C-
compliant Category 6a unshielded
cabling. Maximum Distance 100 meters (328 feet) Connector 8-pin RJ-45
LEDs Each port has a single LED that displays link and activity information.
Refer to Table 9.
Table 9. Port Link and Activity LEDs on the AT-XEM2-12XT Line Card
State Description
Solid Green The port has established a 10GBase link
to a network device.
Flashing Green The port is transmitting or receiving data
at 10GBase.
Solid Amber The port has established a 100Mbps or
1GBase link to a network device.
Flashing Amber The port is transmitting or receiving data
at 100Mbps or 1GBase.
Off Possible causes of this state are listed
here:
- The port has not established a link with another network device.
- The LEDs are turned off. To turn on the LEDs, use the eco-friendly button.
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Chapter 1: Overview

AT-XEM2-12XTm Line Card

The AT-XEM2-12XTm Card is shown in Figure 10.
Figure 10. AT-XEM2-12XTm Line Card
The AT-XEM2-12XTm Card has 12 twisted pair ports with standard 8-pin RJ-45 ports. The specifications of the ports are listed in Table 10.
Table 10. Twisted Pair Ports on the AT-XEM2-12XTm Line Card
Specification Description
Port Speed The ports support the following speeds:
- 100Mbps
- 1/2.5/5/10Gbps The ports do not support 10Mbps. You can set port speed with Auto-
Negotiation or manually. The default is Auto-Negotiation.
Duplex Mode Full-duplex only.
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x950 Series Installation Guide for VCStack
Table 10. Twisted Pair Ports on the AT-XEM2-12XTm Line Card
Specification Description
Cabling Cable minimum requirements are:
- 100Mbps - Standard TIA/EIA 568-B­compliant Category 3 unshielded cabling.
- 1/2.5/5Gbps - Standard TIA/EIA 568-A­compliant Category 5 or TIA/EIA 568-B­compliant Enhanced Category 5 (Cat 5e) unshielded cabling.
- 10Gbps -Standard TIA/EIA 568-C­compliant Category 6a unshielded cabling.
Maximum Distance 100 meters (328 feet) Connector 8-pin RJ-45
Each port has a single LED that displays link and activity information. The states of LEDs are described in Table 11.
Table 11. Link and Activity LEDs on the AT-XEM2-12XTm Line Card
State Description
Solid Green The port has established a 2.5Gbps,
5Gbps, or 10Gbps link to a network device.
Flashing Green The port is transmitting or receiving data
at 2.5Gbps, 5Gbps, or 10Gbps.
Solid Amber The port has established a 100Mbps or
1GBase link to a network device.
Flashing Amber The port is transmitting or receiving data
at 100Mbps or 1GBase.
Off Possible causes of this state are listed
here:
- The port has not established a link with another network device.
- The LEDs are turned off. To turn on the LEDs, use the eco-friendly button.
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Chapter 1: Overview

AT-XEM2-12XS Line Card

The AT-XEM2-12XS Line Card is shown in Figure 11.
Figure 11. AT-XEM2-12XS Line Card
Transceivers The card has twelve ports that support the following types of 1Gbps SFP
or 10Gbps SFP+ transceivers:
1Gbps SX or LX SFP transceivers10Gbps SR or LR fiber optic transceivers10Gbps SP10TW direct attach twinax cables with SFP+
transceiver-style connectors
1Gbps SPTX transceivers with RJ-45 ports for twisted pair cable1Gbps/10Gbps SP10T transceivers with RJ-45 ports for twisted
pair cable
Guidelines about the ports are listed here:
They do not support 100Mbps transceivers.They support full-duplex mode only.You can set the port speeds with Auto-Negotiation or manually.
The default is Auto-Negotiation.
SFP or SFP+ transceivers must be purchased separately. For a list of supported transceivers, refer to the x950 Switches data sheet on the Allied Telesis web site.
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x950 Series Installation Guide for VCStack
LEDs The ports have link and activity LEDs. The LED states are described in
Table 12.
Table 12. Port Link and Activity LEDs on the AT-XEM2-12XS Line Card
State Description
Solid Green The transceiver has established a
10GBase link to a network device.
Flashing Green The transceiver is transmitting or receiving
data at 10GBase.
Solid Amber The transceiver has established a 1GBase
link to a network device.
Flashing Amber The transceiver is transmitting or receiving
data at 1GBase.
Off Possible causes of this state are listed
here:
- The transceiver has not established a link with another network device.
- The LEDs are turned off. To turn on the LEDs, use the eco-friendly button.
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Chapter 1: Overview

AT-XEM2-4QS Line Card

The AT-XEM2-4QS Line Card is shown in Figure 12.
Figure 12. AT-XEM2-4QS Line Card
Transceivers The card supports the following types of 40Gbps QSFP+ transceivers in
its four ports:
QSFPSR4 transceiver - Maximum operating distance of 150
meters (492 feet) with 12-strand OM4 fiber optic cable.
QSFPLR4 transceiver - Operating range of 2 meters (6.6 feet) to
10 kilometers (6.2 miles) with single-mode fiber optic cable.
QSFP1CU and QSFP3CU direct attach cables - Lengths of 1 and
3 meters, respectively.
QSFP-4SFP10G-3CU and QSFP-4SFP10G-5CU 40Gbps to
10Gbps breakout cables in lengths of 3 and 5 meters, respectively. Refer to “Breakout Cables” on page 26 for more information.
LEDs The LED states for transceivers or direct attach cables in ports on the AT-
XEM2-4QS Line Card are described in Table 13.
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x950 Series Installation Guide for VCStack
Table 13. Port Link and Activity Status LEDs on the AT-XEM2-4QS Line
Card
State Description
Solid Green The transceiver has established a
40GBase link to a network device.
Flashing Green The transceiver is transmitting or receiving
data.
Off Possible causes of this state are listed
here:
- The transceiver slot is empty.
- The transceiver has not established a link to a network device.
- The LEDs are turned off. To turn on the LEDs, use the eco-friendly button.
The LED states for breakout cables are described in Table 14.
Table 14. Link and Activity Status LEDs for 10Gbps Breakout Cables
State Description
Solid Amber At least one of the four ports on the
breakout cable has established a 10Gbps link to a network device.
Flashing Amber At least one of the four ports on the
breakout cable is sending or receiving data.
Off Possible causes of this state are listed
here:
- The transceiver slot is empty.
- None of the ports on the breakout cable have established a link to a network device.
- The LEDs are turned off. To turn on the LEDs, use the eco-friendly button.
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Chapter 1: Overview

AT-XEM2-1CQ Line Card

The AT-XEM2-1CQ Line Card is shown in Figure 13.
Figure 13. AT-XEM2-1CQ Line Card
Transceivers The one port on the card supports the following 100Gbps QSFP28
transceivers:
QSFP28SR4 transceiver - Maximum operating distance of 70m
(230 ft) or 100m (328 ft) with 12-strand OM3 or OM4 fiber optic cable, respectively. Requires a MPO pluggable optical connector.
QSFP28LR4 transceiver - Operating range of 2m (6.6 ft) to 10km
(6.2 mi). Requires single-mode fiber optic cable with a duplex LC connector.
QSFP28-1CU and QSFP28-3CU direct attach cables - Lengths of
one and three meters, respectively.
LEDs The LED states for the port in the AT-XEM2-1CQ Line Card are described
in Table 15.
Table 15. Port Link and Activity Status LED on the AT-XEM2-1CQ Line
Card
State Description
Solid Green The transceiver has established a link to a
network device.
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x950 Series Installation Guide for VCStack
Table 15. Port Link and Activity Status LED on the AT-XEM2-1CQ Line
Card (Continued)
State Description
Flashing Green The transceiver is transmitting or receiving
data.
Off Possible causes of this state are listed
here:
- The transceiver slot is empty.
- The transceiver has not established a link to a network device.
- The LEDs are turned off. To turn on the LEDs, use the eco-friendly button.
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Chapter 1: Overview
Note
USB Slot
NET MGMT
Port
CONSOLE
RS-232
Serial Port
Switch ID
LED
eco-friendly
Button

Management Panel

The components on the management panel are identified in Figure 14.
USB Port You can use the USB port with a flash drive for the following functions:
Figure 14. Management Panel
The management panel is not field-replaceable.
Provide a centralized network backup location for Autonomous
Management Framework.
Store backup copies of configuration files.Transfer configuration files between switches that are to have
similar configurations.
Store or transfer log files.Store or transfer debug files (for example, the output of the SHOW
TECH-SUPPORT command).
Boot the AlliedWare Plus operating system and master
configuration file from flash drive.
Using a flash drive with the switch is optional.
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NET MGMT
Ethernet
Management
Port
The switch uses the NET MGMT port as a separate routed eth0 interface. The interface is not part of the switching matrix, but the switch can route traffic in or out of the port from the network ports and Ethernet line card. Here are the guidelines:
The port should only be used for initial configuration and
maintenance access to the chassis.
The NET MGMT port has a standard 8-pin RJ-45 connector and
operates at 10, 100, or 1000 Mbps in either half- or full-duplex mode.
The default setting for the port is Auto-Negotiation, which sets the
speed and duplex mode automatically. You may disable Auto­Negotiation and configure the port manually.
The wiring configuration of the NET MGMT port is set automatically
with automatic MDIX detection. You can disable automatic MDIX detection and set the wiring configuration manually.
The port is referred to as eth0 in the management software.
The minimum cable requirements for the port are listed here.
10 or 100Mbps - Standard TIA/EIA 568-B-compliant Category 3
unshielded cabling.
1000Mbps - Standard TIA/EIA 568-A-compliant Category 5 or TIA/
EIA 568-B-compliant Enhanced Category 5 (Cat 5e) unshielded cabling.
For instructions on how to configure the NET MGMT port, refer to the Software Reference for x950 Switch, AlliedWare Plus Operating System.
The Network Management (NET MGMT) port has one Status LED, described in Table 16.
Table 16. NET MGMT Port LED
State Description
Solid Green The port has established a 1000 Mbps link
with a network device.
Flashing Green The port is transmitting or receiving data
at 1000 Mbps.
Solid Amber The port has established a 10 or 100
Mbps link.
Flashing Amber The port is transmitting or receiving data
at 10 or 100 Mbps.
Off The port has not established a link to a
network device.
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Chapter 1: Overview
Note
The switch is booting up.
The switch has encountered a fault condition.
The VCStack feature is disabled. The switch is operating
as a stand-alone unit, with the ID number 1.
The switch is a member of a VCStack and has
The dot in the lower right corner flashes when the switch accesses USB memory.
an ID number in the range of 1 to 8.
Console (RS-232)
Port
You use the Console Port to conduct local management sessions with the switch. Local management sessions require a terminal or PC with a terminal emulation program, and the management cable that comes with the switch. The switch does not need an Internet Protocol (IP) address for local management sessions because they are not conducted over a network. For instructions, refer to “Starting a Local Management Session” on page 141.
The first management session of the switch can be either a local session or a remote session over your network through the NET MGMT port. For remote management, the switch uses either its default IP address 192.168.42.42 or an address assigned to it by a DHCP server. For instructions on remote management sessions, refer to the Software Reference for x950 Switches, AlliedWare Plus Operating System.
Switch ID LED The Switch ID LED, shown in Figure 14 on page 42, displays a variety of
information. Figure 15 shows the states of the LED when the eco-friendly mode is disabled.
Figure 15. Switch ID LED with the eco-friendly Mode Disabled
The switch displays the letter “F” for fault on the ID LED if it detects one of the following problems:
44
A cooling fan has failed.The switch is about to shut down because its internal temperature
is outside the normal operating range.
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x950 Series Installation Guide for VCStack
Note
The VCStack feature is disabled. The switch is operating
The switch is the master switch of a VCStack.
The switch is a member switch of a VCStack.
as a stand-alone device.
You can use the SHOW SYSTEM ENVIRONMENT command in the command line interface to identify the source of the problem.
Figure 16 illustrates the states of the LED when the eco-friendly mode is enabled and the switch is operating in the low power mode.
eco-friendly
Button
Figure 16. Switch ID LED with the eco-friendly Mode Enabled
You use the eco-friendly button on the management panel to turn the LEDs on or off. You might turn off the LEDs when you are not using them to monitor the control and Ethernet line cards, to conserve electricity. When the LEDs are off, the overall power consumption of the chassis is reduced by approximately 2 watts.
The button controls all the port LEDs, except for the L/A LED for the NET MGMT port. Additionally, the button does not control the LEDs on the power supplies.
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Chapter 1: Overview

Optional Direct Attach Cables

The optional direct attach cables listed in Table 17 offer an economical way to add 10Gbps, 40Gbps, or 100Gbps connections over short distances for switch ports or ports on XEM2 Line Cards.
Table 17. Optional Direct Attach Cables
Switch Ports XEM2 Line Card Speed Direct Attach Cable
Ports 1 to 24 on the AT­x950-28XSQ Switch
Ports 25, 29, 33, and 37 on both switches
Ports 25, 29, 33, and 37 on both switches
AT-XEM2-12XS 10Gbps SP10TW1 - 1 meter
SP10TW3 - 3 meters SP10TW7 - 7 meters
AT-XEM2-4QS 40Gbps QSFP1CU - 1 meter
QSFP3CU - 3 meters
AT-XEM2-1CQ 100Gbps QSFP28-1CU - 1 meter
QSFP28-3CU - 3 meters
46
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AT-PWR600 Power Supply

The AT-PWR600 module is the power supply for the switch. The model name can be found on a label on the release tab on the front panel. Refer to Figure 17.
x950 Series Installation Guide for VCStack
Figure 17. AT-PWR600 Power Supply
Here are power supply guidelines:
You can install either one or two power supplies in the switch.A single power supply can power a fully equipped switch.
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Chapter 1: Overview
Installing two power supplies adds power redundancy.The power supplies are installed in the PSU A and PSU B slots in
the rear panel of the chassis. If you are installing only one power supply, Allied Telesis recommends installing it in PSU A slot because that slot does not come with a blank slot cover.
The switch does not come with power supplies. They are
purchased separately.
The power supplies are field-replaceable and hot-swappable. If the
switch has two power supplies and one fails, you can replace the failed unit without having to power off the operational power supply.
LEDs The two LEDs on the front panel of the power supply are described in
Table 18.
Table 18. LEDs on the AT-PWR600 Power Supply
Green LED Amber LED Description
Solid green Off The power supply is operating
normally.
Blinking green
Off The power supply is in the standby
mode.
Solid green Blinking amber The power supply is experiencing a
warning condition, but is still operating. Here are possible causes:
- The power supply is overheating.
- The speed of it’s fan is too low.
- Its output current is too high.
- The input voltage from the AC power source is too low.
Off Solid amber The power supply shut down because
one of these fault conditions occurred:
- The power supply overheated.
- Its fan stopped or was too slow.
48
- Its output current to the switch was too high.
- The input voltage from the AC power source was too low.
Page 49

AT-FAN05 Cooling Fan

The cooling unit for the chassis is the AT-FAN05 Fan module. Refer to Figure 18.
x950 Series Installation Guide for VCStack
Figure 18. AT-FAN05 Fan Module
Here are the fan module guidelines:
The switch comes with two pre-installed fan modules in FAN A and
FAN B slots on the rear panel.
The fan modules are field-replaceable and hot-swappable. You do
not have to power off the switch to replace them.
The switch automatically adjusts the fan speeds according to its
internal temperature.
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Chapter 1: Overview
port
n.n.n
Slot Number
Port Number
Switch ID Number
Slot Number 1 for
XEM2 Line Card:
portn.1.n
Slot Number 0 for
Base Ports:
portn.0.n

Designating Ports in the Command Line Interface

The individual ports on the switch are identified with the PORT parameter in the command line interface of the AlliedWare Plus management software. The format of the parameter is shown in Figure 19.
Figure 19. PORT Parameter in the Command Line Interface
The three parts of the PORT parameter are described in Table 19.
Table 19. PORT Parameter Format
Number Description
Switch ID Number Identifies the switch’s unique ID number in
the stack. When the VCStack feature is enabled, switches display their ID numbers on the Switch ID LEDs on the front panels.
Slot Number Identifies whether ports are base ports or
ports on an XEM2 Line Card. Slot number 0 indicates base ports and slot number 1 indicates ports on a line card. Refer to Figure 20.
Port Number Identifies a port number.
Figure 20 identifies the slot numbers for base ports and line card ports.
50
Figure 20. Slot Numbers for Port Numbering
Page 51
x950 Series Installation Guide for VCStack
You must include the PORT parameter when identifying individual ports, and omit it from the last port when specifying ranges. Here are examples of the PORT parameter in the INTERFACE command for switches in a stack. The first example enters the port Interface mode for base port 11 in a switch with ID 1:
awplus> enable awplus# configure terminal awplus(config)# interface port1.0.11
This example enters the port Interface mode for base port 4 to 7 in a switch with ID 2:
awplus(config)# interface port2.0.4-2.0.7
This example enters the port Interface mode for ports 2 and 5 in an XEM2 line card in a switch with ID 1:
awplus(config)# interface port1.1.2,port1.1.5
This example enters the port Interface mode for base port 6 as well as port 5 on an XEM2 line card in a switch with ID 2:
awplus(config)# interface port2.0.6,port2.1.5
This example enters the port Interface mode for base port 10 in a switch with ID 1 and base port 18 in a switch with ID 2:
awplus(config)# interface port1.0.10,port2.0.18
For further instructions, refer to the Software Reference for x950 Switch, AlliedWare Plus Operating System.
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Chapter 1: Overview

Software and Hardware Releases

The software and hardware releases for the AlliedWare Plus operating software and x950 Switches are listed in Table 20.
Table 20. Software and Hardware Releases
Hardware / VCStack Software Version
AT-x950-28XSQ Switch AT-XEM2-12XT Line Card AT-XEM2-12XS Line Card AT-XEM2-4QS Line Card AT-XEM2-1CQ Line Card VCStack - Stacks up to two switches.
VCStack - Stacks up to four switches. v 5.4.9 AT-x950-28XTQm Switch
AT-XEM2-12XTm Line Card AT-XEM2-12XT Line Card: Adds 100Mbps
port speed
v5.4.8-2
v5.4.9-1
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Chapter 2

Note

Virtual Chassis Stacking

The sections in this chapter are listed here:
“Overview” on page 54“Stacking Guidelines” on page 55“Stack Trunks” on page 56“Master and Member Switches” on page 69“Switch ID Numbers” on page 70“Optional Feature Licenses” on page 71“Planning a Stack” on page 72“Stack Worksheet” on page 73
For more information on VCStack, refer to the Stacking Introduction and Stacking Commands chapters in the Software Reference for x950 Series Switches, AlliedWare Plus Operating System from
www.alliedtelesis.com/support.
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Chapter 2: Virtual Chassis Stacking

Overview

The Virtual Chassis Stacking (VCStack) feature enables you link together up to four x950 Switches into a virtual stack so that they function as a single networking unit. The feature provides the following benefits:
Simplifies management - You can manage the devices as a single
unit, rather than individually. Your local and remote management sessions automatically give you management access to all the switches.
Reduces IP addresses - A stack requires only one IP address for
remote management access, reducing the number of IP addresses you have to assign to network devices. The one address gives you management access to all the stack units.
Adds feature flexibility and resiliency - Stacking gives you more
flexibility in how you can configure some features. For instance, you can create port aggregations using ports from different switches, rather than ports from only one switch. By distributing the ports of an aggregation across multiple switches, you increase its resiliency because the aggregation can continue to function, though at a reduced bandwidth, even if a switch in a stack stops functioning.
Reduces protocol requirements - Creating a stack might eliminate
the need to configure some protocols, such as the Virtual Router Redundancy Protocol or Spanning Tree Protocol.
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Stacking Guidelines

Note
Here are general stacking guidelines:
x950 Series Installation Guide for VCStack
AlliedWare Plus v5.4.8-2 supports stacks of two switches.AlliedWare Plus v5.4.9 or later supports stacks up to four switches.
Instructions later in this guide explain how to view the version number of the operating software on the switches.
The VCStack feature comes standard with the AlliedWare Plus
operating software. No additional software or license is required.
The default setting for the VCStack feature on x950 Switches is
disabled. Enabling it requires rebooting the switch. Instructions later in this guide explain how to enable the feature and reboot the unit.
A stack can have both AT-x950-28XSQ and AT-x950-28XTQm
Switches.
The switches must have the same optional features licenses. If you
purchased optional features for the switches, you should install them before assembling the stack.
The switches of a stack have to be connected together with a
network link called a stack trunk. As explained in “Stack Trunks” on page 56, you can choose any ports on the switches to be the trunk. Once ports are designated as members of the trunk, they cannot be used as regular networking ports.
You should not pre-configure the features of the switches, such as
virtual LANs and spanning tree, before building the stack. The configuration settings are likely to be discarded once the switches begin operating as a stack.
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Chapter 2: Virtual Chassis Stacking

Stack Trunks

The switches of a stack are connected with a physical network link called the stack trunk. Here are general trunk guidelines:
The ports of a trunk can be 10Gbps, 40Gbps, or 100Gbps.A stack can have only one trunk.A trunk can have multiple physical links between switches, for
added bandwidth and resiliency.
All the ports in the trunk must be the same speed.There are no default trunk ports.You designate trunk ports with the STACKPORT command in the
AlliedWare Plus operating system.
Once ports are designated as trunk ports, you cannot view or
change their parameter settings.
The fiber optic transceivers or direct attach cables of a trunk must
be from Allied Telesis. Transceivers or cables from other network equipment providers might not perform properly as trunks. For a list of supported transceivers, refer to the Allied Telesis web site.
A stack of x950 Switches cannot include other stacking products,
such as x600 Switches.
In most cases, a trunk should have a minimum of two physical links
between switches.
If a trunk fails for any reason, the switches operate as stand-alone
devices.
You can choose the ports of a trunk from the following groups on the x950 Switches:
“Ports 1 to 24,” next“Ports 25 to 37 with 40Gbps Transceivers” on page 60“Ports 25 to 37 with 100Gbps Transceivers” on page 61“XEM2 Line Cards” on page 63
Ports 1 to 24 Ports 1 to 24 on the AT-x950-28XSQ Switch support 1Gbps SFP and
10Gbps SFP+ transceivers, while these ports on the AT-x950-28XTQm Switch are twisted pair ports that support 1/2.5/5/10Gbps. Even though the ports are different on the two switches, the rules to using them as a stack trunk are mainly the same. Here are the guidelines:
The trunk can have up to eight ports per switch. The more ports in
the trunk, the greater its bandwidth and resiliency.
56
You can use any of the ports for the trunk.
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x950 Series Installation Guide for VCStack
There are no default trunk ports.All the switches in the stack must be the same model, such as all
AT-x950-28XSQ Switches or all AT-x950-28XTQm Switches. To build stacks with both types of switches, use ports 25 to 37 or XEM2 Line Cards.
Ports 1 to 24 in the AT-x950-28XSQ Switch support both 1Gbps
and 10Gbps transceivers. However, the transceivers for the trunk must be 10Gbps. You cannot use 1Gbps transceivers for the trunk.
For a stack of AT-x950-28XSQ Switches, the trunk can consist of
either 10Gbps fiber optic transceivers or, if the switches are in the same or adjacent equipment racks, AT-SP10TW direct attach cables.
Ports 1 to 24 on the AT-x950-28XTQm Switch support 1/2.5/5/
10Gbps. Ports used in a trunk must operate at 10Gbps, in Auto­Negotiation.
In stacks of three of four switches, you have to connect the end
switches together to form a ring.
The following guidelines are not mandatory but they are recommended because they can make managing or troubleshooting a trunk easier:
Use the same ports for the trunk on all the switches.Choose consecutive ports (for example, ports 6 to 9).When cabling the trunk links, connect together the same ports in
the switches, if possible.
Figure 21 on page 58 has examples of stacks of two, three, and four AT­x950-28XSQ Switches, with trunks of 10Gbps links. Here are the general properties:
The trunks consist of four 10Gbps ports on each switch. (10Gbps
trunks can have up to eight ports per switch.)
The switches use the same consecutive ports, 1 to 4. As
mentioned earlier, the trunk ports do not have to be consecutive, nor do they have to be the same ports on all switches. But following the recommendations can make trunk management easier.
In stacks of three or four switches, the top and bottom switches are
connected together.so that the trunk forms a ring.
When possible, try cabling the same trunk ports together. For
example, if you select ports 6 to 9 as trunk ports, cable port 6 on one switch to port 6 on the next, port 7 to port 7, and so on. Again, this is not mandatory, but it can make managing or troubleshooting the stack easier.
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Stack of Two Switches
Stack of Three Switches
Stack of Four Switches
Figure 21. Example Stacks of AT-x950-28XSQ Switches with Trunks of
10Gbps Ports
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x950 Series Installation Guide for VCStack
Stack of Two Switches
Stack of Three Switches
Stack of Four Switches
Figure 22 has examples of stacks with 10Gbps trunks for two, three, or four AT-x950-28XTQm Switches. The examples use ports 1 to 4 for the trunks. As a reminder, a trunk of ports 1 to 24 can have up to eight ports per switch and you can use any of the ports.
Figure 22. Example Stacks of AT-x950-28XTQm Switches with Trunks of
10Gbps Ports
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Chapter 2: Virtual Chassis Stacking
Ports 25 to 37
with 40Gbps
Transceivers
You can also use ports 25 to 37 for stack trunks. These ports support both 40Gbps and 100Gbps transceivers. You can use either type of transceivers for the trunk, but the rules are slightly different. Here are the guidelines to using 40Gbps transceivers for the trunk:
The trunk links can consist of fiber optic transceivers or QSFP1CU
or QSFP3CU direct attach cables.
Stacks can have both AT-x950-28XSQ and AT-x950-28XTQm
Switches.
For stacks of two switches, you can use two, three, or four ports
per switch for trunks. Examples are show in Figure 23.
60
Figure 23. Example Stacks of Two Switches with Trunk Ports 25 to 37 and
40Gbps Links
Page 61
x950 Series Installation Guide for VCStack
To build stacks of three or four switches, Allied Telesis
recommends using all four ports. Examples are shown in Figure 24. Please note how the top and bottom switches are connected to form a loop in the trunk.
Ports 25 to 37 with 100Gbps
Transceivers
Figure 24. Example Stacks of Three or Four Switches with Trunk Ports 25
to 37 and 40Gbps Links
Here are the guidelines to using ports 25 to 37 with 100Gbps transceivers for trunks:
You can use either fiber optic transceivers or QSFP28-1CU or
QSFP28-3CU direct attach cables for the trunk links.
The trunk can have a maximum of two ports per switch.You can use any two of the four 100Gbps ports for the trunk.Because the trunk cannot have more than two 100Gbps ports per
switch, stacks of three or four switches can have only one link between switches.
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Stacks can have both AT-x950-28XSQ and AT-x950-28XTQm
Switches.
Figure 25 illustrates stacks of two, three, and four switches, with
ports 33 and 37 and 100Gbps links as the trunks.
62
Figure 25. Example Stacks with Trunks Ports 33 to 37 and 100Gbps Links
Page 63
x950 Series Installation Guide for VCStack
XEM2 Line
Cards
Here are the guidelines to using ports on XEM2 Line Cards in the expansion slots for trunks:
Stacks can have up to four switches.Stacks can have both AT-x950-28XSQ and AT-x950-28XTQm
Switches.
The maximum number of links in the trunk varies by line card.
Refer to Table 21 on page 63. For example, a trunk using AT­XEM2-12XT or AT-XEM2-12XS Line Cards can have up to eight ports per card.
Table 21. Maximum Number of Trunk Ports Per XEM2 Line Card
AT-XEM2 Line Card
Maximum Number of Trunk
Ports Per Card
AT-XEM2-12XT 8 AT-XEM2-12XTm 8 AT-XEM2-12XS 8 AT-XEM2-4QS 4 AT-XEM2-1CQ
1. Allied Telesis does not recommend using the AT-XEM2-1C Q Line Card for a stack trunk.
Ports on AT-XEM2-12XT, AT-XEM2-12XTm, or AT-XEM2-12XS
1
1
Line Cards have to operate at 10Gbps to be trunk ports.
Figure 26 is an example of a stack of two switches with a trunk of
six 10Gbps links on AT-XEM2-12XT Line Cards.
Figure 26. Example Trunk Using AT-XEM2-12XT Line Cards
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Chapter 2: Virtual Chassis Stacking
Figure 27 is an example of a stack of three switches with a trunk
from ports on AT-XEM2-12XS Line Cards.
Figure 27. Example Trunk Using AT-XEM2-12XS Line Cards
Figure 28 is an example of a stack of four switches with a trunk of
ports on AT-XEM2-4QS Line Cards.
64
Figure 28. Example Trunk Using AT-XEM2-4QS Line Cards
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x950 Series Installation Guide for VCStack
Wiring Room 1
Wiring Room 2
Fiber Optic Cables
AT-SP10TW Direct
Attach Cables
Unsupported
Trunks
The following are examples of unsupported trunks.
In stacks of three or four switches, the number of links in the trunk
has to be the same on all switches. The trunk in Figure 29 is unsupported because the middle switch is connected to the top and bottom switches with two links each, while the top and bottom switches are connected with only one link.
Figure 29. Unsupported Trunk with Different Numbers of Links Between
Switches
The cables in a trunk must be all the same type: They can be all
fiber optic cables, direct attach cables, or twisted pair cables. Trunks cannot contain different types of cables. The trunk in Figure 30 is unsupported because it has both fiber optic and direct attach cables.
Figure 30. Unsupported Trunk with Mixed Cables
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Trunks cannot have both base ports and XEM2 Line Card ports.
The unsupported trunk in Figure 31 consists of base 10Gbps ports and ports on AT-XEM2-12XS Line Cards.
Figure 31. Unsupported Trunk with Both Base and XEM2 Line Card Ports
Trunks cannot have links that interconnect base ports and XEM2
Line Card ports. The example trunk in Figure 32 is unsupported because base 10Gbps ports 1 and 2 in the top switch are connected to ports 1 and 2 on the AT-XEM2-12XS Line Card in the bottom switch.
Figure 32. Unsupported Trunk of Connected Base and Line Card Ports
In most cases, trunks should have a minimum of two links between
switches. The trunk in Figure 33 is not recommended because there is only one link between switches. The exceptions to this are stacks of three or four switches with trunks of base 100Gbps ports. Refer to Figure 25 on page 62.
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x950 Series Installation Guide for VCStack
10Gbps
40Gbps or 100Gbps
100Gbps
Figure 33. Unsupported Trunk with Only One Link Between Switches
Trunk links must be the same speed. The example in Figure 34 is
unsupported because the links are different speeds.
Figure 34. Unsupported Trunk with Different Port Speeds
Allied Telesis does not recommend using the AT-XEM2-1CQ Line
Card for a stack trunk because it has only one transceiver port and the switch has only one expansion port. Refer to Figure 35. Instead, use two base 40/100Gbps transceiver ports, as shown in Figure 25 on page 62, to build a 100Gbps trunk.
Figure 35. Not Recommended Stack Trunk of AT-XEM2-1CQ Line Cards
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Breakout Cable
Media
Converters
Wiring closet 1
Wiring closet 2
You cannot use a 10Gbps breakout cable for a trunk. Refer to
Figure 36.
Figure 36. Unsupported Trunk with a 10Gbps Breakout Cable
The base 10Gbps transceiver ports and AT-XEM2-12XS Line Card
support 1Gbps transceivers. However, you cannot use 1Gbps transceivers for a stack trunk.
Trunk links must be direct connections between ports on the
switches, without any intermediary network devices, such as media converters, routers, or other Ethernet switches. Figure 37 is an example of an unsupported trunk because it contains media converters.
68
Figure 37. Unsupported Trunk with Intermediary Network Devices
Page 69

Master and Member Switches

One switch of a stack functions as a master switch. Its main functions are listed here:
Coordinate and monitor stack operations.Verify that the switches are using the same version of
management software. It automatically downloads its management software over the stacking cables to switches with different software versions.
Verify that the switches have different ID numbers. It automatically
assigns new ID numbers to resolve conflicts where two or more switches have the same ID number.
The other switches are called member switches.
x950 Series Installation Guide for VCStack
Selection of the
Master Switch
The switches of the stack designate the master switch during the initialization process, when they are powered on or reset. They base the selection of the master switch on the following parameters:
Stack priority numbersMAC addresses
The stack priority number is an adjustable value of 0 to 255, where the lower the number, the higher the priority. Typically, the switch with the lowest priority number (highest priority) becomes the master switch of a stack. The default priority value is 128.
If the switches have the same priority values, the selection of the master switch is based on their MAC addresses. As with the priority value, the lower the MAC address, the higher the priority. The switch with the lowest MAC address becomes the master switch.
If you power on the stack without adjusting the priority values, the master switch is selected based on the MAC addresses if the units are powered on simultaneously. If you power on the switches one at a time, the master switch is the first switch powered on.
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Caution

Switch ID Numbers

Each switch must have an ID number. The range is 1 to 4. The default is 1. The ID numbers are displayed on the ID LEDs on the front panels of the units. You can assign the numbers yourself or let the master switch assign the numbers automatically when you first power on the stack.
You use the ID numbers to identify the individual ports and switches when configuring the devices with the commands in the management software. For further information, refer to “Designating Ports in the Command Line Interface” on page 50.
The ID numbers are also used to identify the parameter settings that are stored in the configuration file. When the stack is reset or power cycled, the switches uses the ID numbers in the commands in the configuration file to determine which parameter settings belong to which switch.
You should not change the ID numbers of the switches after you begin configuring the parameter settings. Otherwise, the stack might apply parameter settings to the wrong devices when you reset or power cycle it. E79
The switches do not use the ID numbers to select the master switch. The selection of the master switch is based on the priority numbers and MAC addresses, as previously explained.
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Optional Feature Licenses

The x950 Switch comes with the AlliedWare Plus management software and a base set of features that are available as soon as you install the device. Additional features and capabilities might be included with the operating system, but can be access only after they are unlocked with optional feature licenses from Allied Telesis. Contact your authorized reseller or distributor for a list of optional features licenses for this product.
Here are the guidelines to feature licenses for a stack of AT-x950-28XSQ Series switches:
The VCStack feature is part of the base features of the switch. It
does not require an optional feature license.
You can install feature licenses while the switches are operating as
stand-alone units or as a stack.
When ordering feature licenses for the switches of a stack, you
must order one license for each switch.
x950 Series Installation Guide for VCStack
Switches can form a stack even if they have different feature
licenses. However, the additional features are only available on those switches with the licenses. The stack generates a warning message if it detects that the switches do not have the same optional feature licenses.
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Note

Planning a Stack

Here are questions you need to answer before building or configuring a stack:
How many switches will be in the stack? AlliedWare Plus v5.4.8-2
supports stacks of two switches. AlliedWare Plus v5.4.9 or later supports stacks up to four switches.
Which switch will be the master switch? Refer to “Master and
Member Switches” on page 69. It can be any switch.
Which ports will be the trunk ports on the switches? Refer to “Stack
Trunks” on page 56.
What will be the ID numbers of the member switches? Refer to
“Switch ID Numbers” on page 70. The master switch should be given ID 1, the default value. Member switches should be assigned IDs in the range of 2 to 4.
If you are planning to use ports on XEM2 Line Cards for the stack
trunk, have you already installed the cards in the switches? Refer to “Installing an Optional XEM2 Ethernet Line Card” on page 100.
What types of transceivers will be used in ports 25, 29, 33, and 37
in the master and member switches? Refer to “Ports 25 to 37” on page 26. You may install the transceivers (but not cable them) before configuring the switches for stacking.
Have you already connected network cables to the trunk ports? If
so, you should disconnect them before configuring the switches for stacking.
Cabling the trunk ports before activating and configuring the VCStack feature may result in loops in your network topology, which can cause poor network performance.
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Stack Worksheet

x950 Series Installation Guide for VCStack
You might find configuring and maintaining a stack a bit easier if you take to time to fill out the worksheet in Table 22.
Table 22. Stacking Worksheet
Switch
Switch/
Location
Switch IDPrior-
ity
Firmware
Version
Number
1
Trunk
Ports
Transceivers
Master 1 1 25:
29: 33: 37:
Member 2 2 25:
29: 33: 37:
Member 3 3 25:
29:
in Slots
25 to 37
AT-XEM2
Card
33: 37:
Member 4 4 25:
29: 33: 37:
1. AlliedWare Plus.
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The worksheet columns are described in Table 23.
Table 23. Stacking Worksheet Columns
Column Description
Location Use this column to record the model names and
physical locations of the switches, such as their buildings or equipment rooms. The information can be useful in identifying and locating the switches if they are in different locations.
ID Each switch in a stack has to have a unique ID
number, in the range of 1 to 4. They display the numbers on the ID LEDs on the front panels and you use the numbers to configure the individual ports. Allied Telesis recommends assigning the ID 1, the default value, to the master switch. You should decide on the ID assignments of the switches before beginning the configuration procedures.
Priority When the switches of a stack are reset or
powered on, they perform an initialization process that involves, in part, choosing the master switch. The selection is based on their priority numbers and MAC addresses. The former is an adjustable parameter with a range of 0 to 255 and a default value of 128. The lower the value, the higher the priority. Thus, the switch with the lowest value becomes the stack master.
If switches have the same priority number, the master is selected based on their MAC addresses. Again, as with priority numbers, the lower the MAC address, the higher the priority.
Allied Telesis recommends setting each switch’s priority value to match its ID value. This is to ensure that the switch you have chosen to be the master unit will indeed function in that role. It will also make it possible for you to know the order in which the switches assume the master role if the primary master should fail or be powered off.
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x950 Series Installation Guide for VCStack
Table 23. Stacking Worksheet Columns (Continued)
Column Description
Firmware Version Number
Use this column to record the version numbers of the AlliedWare Plus management software on the switches. The switches might not be able to form the stack if they have different versions. Switches that have different versions should be updated to the most recent release before you build the stack. The configuration instructions explain how to view the version numbers.
Trunk Ports Use this column to enter the trunk ports. You
should choose the ports before beginning the configuration procedures. Refer to “Stack Trunks” on page 56.
Transceivers in Slots 25 to 37
Used this column to record the transceiver speeds for slots 25 to 37. The possible speeds are listed here:
- 40Gbps
- 100Gbps
- 10Gbps breakout cable
AT-XEM2 Slot Use this column to enter the model names of the
AT-XEM2 Line Cards, if present, in the expansion slots.
Switch
Switch/
Location
Master AT-x950-
28XSQ Bldg 2A
rm:304
Table 24 is an example of a completed worksheet.
Table 24. Example of a Completed Stack Worksheet
Switch IDPrior-
ity
Firmware
Version
Number
Trunk
Ports
Transceivers
in Slots
25 to 37
1 1 v5.4.9-0 33, 37 25: empty
29: 40Gbps 33: 100Gbps 37: 100Gbps
AT-XEM2
Card
none
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Chapter 2: Virtual Chassis Stacking
Table 24. Example of a Completed Stack Worksheet (Continued)
Switch
Switch/
Location
Member AT-x950-
28XTQm Bldg 2A
rm:304
Member AT-x950-
28XTQm Bldg 2A
rm:304
Member AT-x950-
28XSQ
Switch IDPrior-
ity
Firmware
Version
Number
Trunk
Ports
Transceivers
in Slots
25 to 37
2 2 v5.4.9-0 33, 37 25: 40Gbps
29: 40Gbps 33: 100Gbps 37: 100Gbps
3 3 v5.4.9-0 33, 37 25: 10Gbps
Breakout 29: Empty 33: 100Gbps 37: 100Gbps
4 4 v5.4.9-0 33, 37 25: 10Gbps
Breakout
AT-XEM2
Card
AT-XEM2­12XS
AT-XEM2­4QS
none
Bldg 2A rm:304
29: 100Gbps 33: 100Gbps 37: 100Gbps
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Chapter 3

Beginning the Installation

The chapter contains the following sections:
“Reviewing Safety Precautions” on page 78“Installation Options” on page 83“Choosing a Site for the Chassis” on page 84“Unpacking the Switch” on page 85“Verifying the Accessory Kit” on page 89“Unpacking the AT-PWR600 AC Power Supply” on page 91
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Chapter 3: Beginning the Installation
Note
Warning
Warning
Warning
Warning
Warning
Warning

Reviewing Safety Precautions

Please review the following safety precautions before beginning the installation procedure.
Safety statements that have the symbol are translated into multiple languages in the T ranslated Safety S t atements document at www.alliedtelesis.com/support.
Class 1 Laser product. L1
Laser Radiation. Class 1M Laser product.
Do not stare into the laser beam. L2
Do not look directly at the fiber optic ends or inspect the cable ends with an optical lens. L6
To prevent electric shock, do not remove the cover. No user­serviceable parts inside. This unit contains hazardous voltages and should only be opened by a trained and qualified technician. To avoid the possibility of electric shock, disconnect electric power to the product before connecting or disconnecting the LAN cables. E1
Do not work on equipment or cables during periods of lightning activity. E2
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x950 Series Installation Guide for VCStack
Warning
Warning
Note
Caution
Warning
Note
Warning
Warning
Power cord is used as a disconnection device. To de-energize equipment, disconnect the power cord. E3
Class I Equipment. This equipment must be earthed. The power plug must be connected to a properly wired earth ground socket outlet. An improperly wired socket outlet could place hazardous voltages on accessible metal parts. E4
Pluggable Equipment. The socket outlet shall be installed near the equipment and shall be easily accessible. E5
Air vents must not be blocked and must have free access to the room ambient air for cooling. E6
Operating Temperatures. This product is designed for a maximum ambient temperature of 50° degrees C. E52
All Countries: Install product in accordance with local and National Electrical Codes. E8
When installing this equipment, always ensure that the frame ground connection is installed first and disconnected last. E11
Only trained and qualified personnel are allowed to install or replace this equipment. E14
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Chapter 3: Beginning the Installation
Caution
Caution
Warning
Warning
Note
Warning
Circuit Overloading: Consideration should be given to the connection of the equipment to the supply circuit and the effect that overloading of circuits might have on overcurrent protection and supply wiring. Appropriate consideration of equipment nameplate ratings should be used when addressing this concern. E21
Risk of explosion if battery is replaced by an incorrect type. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions.
Attention: Le remplacement de la batterie par une batterie de type incorrect peut provoquer un danger d’explosion. La remplacer uniquement par une batterie du même type ou de type équivalent recommandée par le constructeur. Les batteries doivent être éliminées conformément aux instructions du constructeur. E22
Mounting of the equipment in the rack should be such that a hazardous condition is not created due to uneven mechanical loading. E25
The chassis may be heavy and awkward to lift. Allied Telesis recommends that you get assistance when mounting the chassis in an equipment rack. E28
Use dedicated power circuits or power conditioners to supply reliable electrical power to the device. E27
This unit might have more than one power cord. To reduce the risk of electric shock, disconnect all power cords before servicing the unit. E30
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x950 Series Installation Guide for VCStack
Note
Caution
Warning
Warning
Caution
Warning
Caution
If installed in a closed or multi-unit rack assembly, the operating ambient temperature of the rack environment may be greater than the room ambient temperature. Therefore, consideration should be given to installing the equipment in an environment compatible with the manufacturer’s maximum rated ambient temperature (Tmra). E35
Installation of the equipment in a rack should be such that the amount of air flow required for safe operation of the equipment is not compromised. E36
Reliable earthing of rack-mounted equipment should be maintained. Particular attention should be given to supply connections other than direct connections to the branch circuits (e.g., use of power strips). E37
This product may have multiple AC power cords installed. To de­energize this equipment, disconnect all power cords from the device. E41
An Energy Hazard exists inside this equipment. Do not insert hands or tools into open chassis slots or plugs. E44
This equipment shall be installed in a Restricted Access location. E45
The unit does not contain serviceable components. Please return damaged units for servicing. E42
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Chapter 3: Beginning the Installation
Warning
Warning
The temperature of an operational SFP or SFP+ transceiver may exceed 70° C (158° F). Exercise caution when removing or handling transceivers with unprotected hands. E43
The chassis must be supplied by a grounded three wire AC source through the power supply cord.
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Page 83

Installation Options

Note
19-inch Equipment Rack with
Optional AT-RKMT-SL01
Sliding Rack Mount Kit
19-inch Equipment Rack
with Standard Brackets
Wall Installation with
Standard Brackets
Tabletop
Figure 38 illustrates the four installation options.
x950 Series Installation Guide for VCStack
This guide contains instructions for all installation options, except the AT­RKMT-SL01 Sliding Rack Mount Kit. Instructions for the latter are provided in the AT-RKMT-SL01 Sliding Rack Mount Kit Installation Guide on the Allied Telesis web site,
Figure 38. Installation Options
The standard brackets are included with the switch, The optional AT­RKMT-SL01 Sliding Shelf is purchased separately.
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Chapter 3: Beginning the Installation

Choosing a Site for the Chassis

Observe these site requirements.
If you are installing the device in an equipment rack, check that the
rack is safely secured so that it will not tip over. Devices should be installed in the rack starting at the bottom, with the heavier devices near the bottom of the rack.
The power outlet should be located near the chassis and be easily
accessible.
The site should allow for easy access to the ports on the front of
the switch, so that you can easily connect and disconnect cables, and view the port LEDs.
The site should allow for adequate air flow around the unit and
through the cooling vents on the front and rear panels. (The ventilation direction is from front to back, with the fans on the ba ck panel drawing the air out of the unit.)
The site should not expose the switch to moisture or water.The site should be a dust-free environment.The site should include dedicated power circuits or power
conditioners to supply reliable electrical power to the network devices.
Twisted pair cabling should not be exposed to sources of electrical
noise, such as radio transmitters, broadband amplifiers, power lines, electric motors, or fluorescent fixtures.
Switch ports are suitable for intra-building connections, or where
non-exposed cabling is required.
Do not install the device in a wiring or utility box that has
inadequate airflow because it might overheat and fail.
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Unpacking the Switch

To unpack the switch from its shipping box, perform the following procedure:
1. Remove the accessories and documents from the accessory partition.
x950 Series Installation Guide for VCStack
Refer to Figure 39.
Figure 39. Removing Accessories
2. Remove the accessory partition. Refer to Figure 40 on page 86.
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Chapter 3: Beginning the Installation
Warning
Figure 40. Removing the Shipping Partition
3. Lift the switch from the shipping box and place it on a level, secure table. Refer to Figure 41 on page 87.
The switch is heavy. Ask for assistance lifting the device out of the shipping box. You might injure yourself or damage the device if you lift it without assistance.
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x950 Series Installation Guide for VCStack
Figure 41. Lifting the Switch from the Shipping Box
4. Remove the switch from the shipping end-caps and protective bag. Refer to Figure 42.
Figure 42. Removing the Switch from the Shipping End-caps and
Protective Bag
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Chapter 3: Beginning the Installation
Note
5. Visually inspect the product for damage.
6. Visually inspect the front panel for the components shown in Figure 1 on page 18.
7. Verify that there are two pre-installed fan modules in FAN A and FAN B slots on the rear panel. Refer to Figure 2 on page 19 and “AT­FAN05 Cooling Fan” on page 49.
Do not power on the switch if it is missing a fan module.
8. Go to “Verifying the Accessory Kit” on page 89.
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Verifying the Accessory Kit

Four standard equipment rack or wall mounting brackets
One 2 m (6.6 ft) local management cable with RJ-45 (8P8C) and DB-9 (D-sub 9-pin) connectors.
Sixteen bracket screws
Four anchors for concrete walls: Length: 29.6mm (1.2 in.) Diameter: 4mm (0.2 in.)
Four screws for wood or concrete walls: Length: 32.6mm (1.3 in.) Diameter: 4mm (0.2 in.)
Seven bumper feet
Figure 43 lists the accessory items that are included with the switch.
x950 Series Installation Guide for VCStack
Figure 43. Accessory Kit
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Chapter 3: Beginning the Installation
Note
If any item is missing or damaged, contact your Allied Telesis sales representative for assistance.
After unpacking the switch and verifying the accessory kit, go to “Unpacking the AT-PWR600 AC Power Supply” on page 91.
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Page 91

Unpacking the AT-PWR600 AC Power Supply

To unpack the AT-PWR600 Power Supply, perform the following procedure:
1. Remove the power cord and any documents from the accessory partition. Refer to Figure 44.
x950 Series Installation Guide for VCStack
Figure 44. Removing the Power Cord and Documents from the AT-
PWR600 AC Power Supply
2. Remove the partition from the shipping box. Refer to Figure 45 on page 92.
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Chapter 3: Beginning the Installation
Warning
Figure 45. Removing the Partition from the AT-PWR600 AC Power Supply
Shipping Box
3. Lift the power supply from the shipping box and place it on a level, secure table. Refer to Figure 46 on page 93.
The power supply is heavy. Ask for assistance lifting the device out of the shipping box. You might injure yourself or damage the device if you lift it without assistance.
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x950 Series Installation Guide for VCStack
Figure 46. Removing the Power Supply from the Shipping Box
4. Remove the power supply from the shipping end-caps and protective shipping bag. Refer to Figure 47.
Figure 47. Removing the Power Supply from the Shipping End-caps and
Protective Bag
5. Visually inspect the product for damage.
6. After unpacking the switch and power supplies, go to Chapter 4, “Installing Power Supplies and Optional XEM2 Line Card” on page 95.
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Chapter 3: Beginning the Installation
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Chapter 4

Installing Power Supplies and Optional XEM2 Line Card

This chapter has the following procedures:
“Installing AT-PWR600 AC Power Supplies” on page 96“Installing an Optional XEM2 Ethernet Line Card” on page 100
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Chapter 4: Installing Power Supplies and Optional XEM2 Line Card
Warning
Caution

Installing AT-PWR600 AC Power Supplies

This section contains the procedure for installing AT-PWR600 Power Supplies in the switch. For background information, refer to “AT-PWR600 Power Supply” on page 47. For a list of power supply components, refer to “Unpacking the AT-PWR600 AC Power Supply” on page 91.
The power supply is heavy. Use both hands to lift it. You might injure yourself or damage the device if you drop it.
The device can be damaged by static electricity. Be sure to follow proper anti-static precautions when installing the device. Allied Telesis recommends using a properly grounded wrist strap or other personal anti-static device and an anti-static mat.
To install a power supply, perform the following procedure:
1. Choose a slot for the power supply. The two power supply slots are labeled PSU A and PSU B on the left side of the rear panel.
If you are installing only one power supply, you can install it in either slot. Allied Telesis recommends PSU A because that slot does not come with a blank power supply panel.
2. If there is already a power supply in PSU A, remove the blank panel from PSU B slot by pressing the release tab to the right and sliding the panel from the switch. Refer to Figure 48 on page 97.
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x950 Series Installation Guide for VCStack
Release Tab
Figure 48. Removing the Blank Power Supply Panel from Slot PSU B
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Chapter 4: Installing Power Supplies and Optional XEM2 Line Card
3. Carefully align the power supply in the slot and slide it into the slot. Figure 49 shows the module aligned for the PSU A slot.
98
Figure 49. Sliding the AT-PWR600 AC Power Supply into the Switch
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x950 Series Installation Guide for VCStack
4. When the power supply makes contact with the connector inside the switch, gently press on its faceplate to seat it on the connector. Refer to Figure 50.
Figure 50. Seating the Power Supply on the Internal Connector
5. Visually inspect the power supply to be sure that its faceplate is flush against the rear panel of the chassis.
6. If you purchased two power supplies for the switch, repeat this procedure to install the second unit.
7. To install an optional XEM2 Ethernet Line Card, go to “Installing an Optional XEM2 Ethernet Line Card” on page 100.
8. After installing the power supplies and optional XEM2 Line Card, go to one of the following chapters:
Chapter 5, “Installing the Switch on a Table” on page 105Chapter 6, “Installing the Switch in an Equipment Rack” on page 109Chapter 7, “Installing the Switch on a Wall” on page 117
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Chapter 4: Installing Power Supplies and Optional XEM2 Line Card
Caution

Installing an Optional XEM2 Ethernet Line Card

This section contains the procedure for installing an optional XEM2 Ethernet line card in the expansion slot in the front panel of the switch. Fo r background information, refer to “XEM2 Ethernet Line Cards” on page 30. The illustrations show the AT-XEM2-12XT Line Card. The procedure is the same for all line card models.
The device can be damaged by static electricity. Be sure to follow proper anti-static precautions when installing the device. Allied Telesis recommends using a properly grounded wrist strap or other personal anti-static device and an anti-static mat.
To install an XEM2 Ethernet line card, perform the following procedure:
1. Using a #2 Phillips-head screwdriver, loosen the two captive screws on the blank expansion slot panel and remove it from the switch. Refer to Figure 51.
100
Figure 51. Removing the Blank Line Card Cover
2. Carefully remove the new Ethernet line card from its shipping container and anti-static bag. Refer to Figure 52 on page 101.
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