Allied Telesis SwitchBlade x908 GEN2 User manual

613-002595 Rev. D
SwitchBlade x908 GEN2 (SBx908 GEN2) Switch
Advanced Layer 3+ Modular Switch
AlliedWare Plus™ v5.4.9-2
SBx908 GEN2 Chassis
XEM2-8XSTm Ethernet Line Card
XEM2-12XT Ethernet Line Card
XEM2-12XTm Ethernet Line Card
XEM2-12XS Ethernet Line Card
XEM2-4QS Ethernet Line Card
XEM2-1CQ Ethernet Line Card
FAN08 Fan Module
SBxPWRSYS2 AC Power Supply
SBxPWRSYS1-80 DC Power Supply
Installation Guide for Virtual Chassis
Stacking

Copyright ©2020 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.

3
Electrical Safety and Emissions Standards
This product meets the following standards.
RFI Emissions: FCC Class A, CISPR 22 Class A, EN55032 Class A, VCCI Class A, ICES-003
Class A, RCM
EMC (Immunity): EN55024, EN61000-3-2, EN61000-3-3
Electrical Safety: UL 60950-1 (CULUS), EN60825-1 (TUV),
RoHS: RoHS6
U.S. Federal Communications Commission
Radiated Energy
Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15
of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with this instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.
Note: Modifications or changes not expressly approved of by the manufacturer or the FCC, can void your right to operate
this equipment.
Industry Canada
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
Warning: In a domestic environment this product may cause radio interference in which case
the user may be required to take adequate measures.
Laser Safety EN60825

4
Translated Safety Statements
Important: Safety statements that have the symbol are translated into multiple languages in the
Translated Safety Statements document at www.alliedtelesis.com/library.
Remarque: Les consignes de sécurité portant le symbole sont traduites dans plusieurs langues
dans le document Translated Safety Statements, disponible à l'adresse www.alliedtelesis.com/
library.

5
Preface ...............................................................................................................................................................................15
Document Conventions .......................................................................................................................................................16
Contacting Allied Telesis .....................................................................................................................................................17
Chapter 1: Overview ........................................................................................................................................................ 19
Overview..............................................................................................................................................................................20
SBx908 GEN2 Chassis ................................................................................................................................................20
XEM2 Ethernet Line Cards...........................................................................................................................................20
Management Software and Interfaces .........................................................................................................................20
Management Methods..................................................................................................................................................21
Management Panel ......................................................................................................................................................21
Power Supplies ............................................................................................................................................................21
SBx908 GEN2 Chassis .......................................................................................................................................................22
XEM2 Ethernet Line Cards..................................................................................................................................................23
XEM2-8XSTm Line Card.....................................................................................................................................................26
Twisted Pair Ports ........................................................................................................................................................26
Twisted Pair Port LEDs ................................................................................................................................................27
Transceiver Ports .........................................................................................................................................................28
Transceiver Port LEDs .................................................................................................................................................28
XEM2-12XT Line Card ........................................................................................................................................................29
Twisted Pair Ports ........................................................................................................................................................29
LEDs.............................................................................................................................................................................30
XEM2-12XTm Line Card......................................................................................................................................................31
Twisted Pair Ports ........................................................................................................................................................31
LEDs.............................................................................................................................................................................32
XEM2-12XS Line Card ........................................................................................................................................................33
Transceiver Ports .........................................................................................................................................................33
LEDs.............................................................................................................................................................................34
XEM2-4QS Line Card..........................................................................................................................................................35
Transceiver Ports .........................................................................................................................................................35
LEDs.............................................................................................................................................................................35
XEM2-1CQ Line Card..........................................................................................................................................................37
Transceiver Port...........................................................................................................................................................37
LED ..............................................................................................................................................................................37
Management Panel .............................................................................................................................................................39
USB Port ......................................................................................................................................................................39
NET MGMT Ethernet Management Port......................................................................................................................40
Console (RS-232) Port.................................................................................................................................................41
Switch ID LED ..............................................................................................................................................................41
eco-friendly Button .......................................................................................................................................................42
Reset Button.................................................................................................................................................................42
Power Supplies....................................................................................................................................................................43
FAN08 Units ........................................................................................................................................................................45
Specifying Ports in the Command Line Interface.................................................................................................................46
Software and Hardware Releases.......................................................................................................................................48
Chapter 2: Virtual Chassis Stacking .............................................................................................................................. 49
Overview..............................................................................................................................................................................50
Stacking Guidelines.............................................................................................................................................................51
Stack Trunk .........................................................................................................................................................................52
Contents

Contents
6
Master and Member Switches............................................................................................................................................ 68
Selection of the Master Switch.................................................................................................................................... 68
Switch ID Numbers............................................................................................................................................................. 69
Optional Feature Licenses.................................................................................................................................................. 70
Planning the Stack.............................................................................................................................................................. 71
Stacking Worksheet............................................................................................................................................................ 72
Chapter 3: Beginning the Installation ............................................................................................................................75
Hardware Installation Overview.......................................................................................................................................... 76
Reviewing Safety Precautions............................................................................................................................................ 77
Choosing a Site for the Chassis.......................................................................................................................................... 82
Unpacking the Chassis....................................................................................................................................................... 83
Unpacking SBxPWRSYS2 AC Power Supplies.................................................................................................................. 88
Unpacking SBxPWRSYS1-80 DC Power Supplies ............................................................................................................ 89
Chapter 4: Installing the Chassis ...................................................................................................................................91
Tools and Material .............................................................................................................................................................. 92
Adjusting the Equipment Rack Brackets............................................................................................................................. 93
Installing the Chassis in an Equipment Rack...................................................................................................................... 97
Installing the Chassis Grounding Wire................................................................................................................................ 98
Installing SBxPWRSYS2 AC Power Supplies................................................................................................................... 101
Installing SBxPWRSYS1-80 DC Power Supplies............................................................................................................. 105
Installing Ethernet Line Cards........................................................................................................................................... 109
Installing Blank Line Card Slot Covers.............................................................................................................................. 113
Installing the Blank Power Supply Slot Cover................................................................................................................... 115
Installing the Power Cord Retaining Clips......................................................................................................................... 117
Verifying the Installation.................................................................................................................................................... 118
Chapter 5: Wiring the SBxPWRSYS1-80 DC Power Supply .......................................................................................119
Introduction....................................................................................................................................................................... 120
Choosing a Method for Attaching the Grounding Wire ..................................................................................................... 122
Connecting the Grounding Wire with the Grounding Terminal ......................................................................................... 123
Connecting the Grounding Wire with Bare Wire............................................................................................................... 128
Introduction to Attaching the Power Wires........................................................................................................................ 131
Connecting the DC Power Wires with the Straight Terminals........................................................................................... 132
Connecting the DC Power Wires with the Right Angle Terminals .................................................................................... 139
Connecting Bare DC Power Wires.................................................................................................................................... 145
Chapter 6: Configuring Switches for Stacking ...........................................................................................................149
Introduction....................................................................................................................................................................... 150
Command Summary......................................................................................................................................................... 151
STACKPORT............................................................................................................................................................. 151
STACK ENABLE ....................................................................................................................................................... 151
STACK PRIORITY..................................................................................................................................................... 151
STACK RENUMBER................................................................................................................................................. 152
SWITCH PROVISION................................................................................................................................................ 152
Powering On SBxPWRSYS2 AC Power Supplies............................................................................................................ 154
Starting a Local Management Session............................................................................................................................. 157
Configuring the Master Switch.......................................................................................................................................... 160
General Steps for the Master Switch......................................................................................................................... 160
Configuring the Master Switch................................................................................................................................... 161
Verifying the Master Switch....................................................................................................................................... 164
What to Do Next........................................................................................................................................................ 165
Configuring Member Switches.......................................................................................................................................... 166
General Steps for Member Switches......................................................................................................................... 166
Configuring a Member Switch - Part I........................................................................................................................ 167
Configuring a Member Switch - Part II....................................................................................................................... 169
Verifying a Member Switch........................................................................................................................................ 171
What to Do Next........................................................................................................................................................ 172
Powering on the Stack...................................................................................................................................................... 174
Verifying the Stack............................................................................................................................................................ 175

AT-SBx908 GEN2 Installation Guide for Virtual Chassis Stackiing
7
Chapter 7: Cabling XEM2 Line Card Ports .................................................................................................................. 177
Cabling Twisted Pair Ports ................................................................................................................................................178
Guidelines to Handling Fiber Optic or Twisted Pair Transceivers .....................................................................................179
Installing and Cabling Fiber Optic Transceivers................................................................................................................180
Installing Direct Connect Cables........................................................................................................................................183
Chapter 8: Replacing Modules ..................................................................................................................................... 187
Replacing SBxPWRSYS2 AC Power Supplies..................................................................................................................188
Replacing SBxPWRSYS1-80 DC Power Supplies............................................................................................................191
Replacing XEM2 Line Cards..............................................................................................................................................202
Replacing FAN08 Modules................................................................................................................................................209
Removing FAN08 Modules.........................................................................................................................................209
Installing FAN08 Modules ..........................................................................................................................................210
Chapter 9: Troubleshooting .......................................................................................................................................... 213
Appendix A: Technical Specifications ......................................................................................................................... 219
Physical Specifications......................................................................................................................................................220
Environmental Specifications.............................................................................................................................................223
Power Specifications .........................................................................................................................................................224
Certifications......................................................................................................................................................................226
Pin Signals for RJ-45 Twisted Pair Ports...........................................................................................................................227
Pin Signals for the RJ-45 Style Serial Console Port..........................................................................................................229
Pin Signals for the NET MGMT Port..................................................................................................................................230

Contents
8

9
Figure 1: Front Panel of the SBx908 GEN2 Chassis............................................................................................................22
Figure 2: Rear Panel of the SBx908 GEN2 Chassis ............................................................................................................22
Figure 3: XEM2 Ethernet Line Cards....................................................................................................................................23
Figure 4: XEM2-8XSTm Line Card.......................................................................................................................................26
Figure 5: XEM2-12XT Line Card..........................................................................................................................................29
Figure 6: XEM2-12XTm Line Card.......................................................................................................................................31
Figure 7: XEM2-12XS Line Card..........................................................................................................................................33
Figure 8: XEM2-4QS Line Card............................................................................................................................................35
Figure 9: XEM2-1CQ Line Card............................................................................................................................................37
Figure 10: Management Panel .............................................................................................................................................39
Figure 11: Switch ID LED.....................................................................................................................................................41
Figure 12: SBxPWRSYS2 and SBxPWRSYS1-80 Power Supplies.....................................................................................43
Figure 13: FAN08 Module ....................................................................................................................................................45
Figure 14: PORT Parameter in the Command Line Interface...............................................................................................46
Figure 15: Example Trunks for Stacks of Two, Three, or Four Switches .............................................................................53
Figure 16: Stack of Three Switches with a Linear Trunk......................................................................................................54
Figure 17: Example of a Trunk with Multiple Links Between Switches.................................................................................55
Figure 18: Example of a Stack Trunk of Ports on Multiple Line Cards.................................................................................56
Figure 19: Unsupported Trunk with Too Many Stacking Ports.............................................................................................58
Figure 20: Stack with Three Chassis....................................................................................................................................59
Figure 21: Unsupported Trunk Because Switches Have Different Numbers of Trunk Links................................................60
Figure 22: Unsupported Trunk with Different Ethernet Line Card Models............................................................................61
Figure 23: Example of a Stack Trunk of Ports on XEM2-8XSTm Line Cards.......................................................................62
Figure 24: Unsupported Trunk with Both Direct Connect and Fiber Optic Cables on XEM2-12XT Line Cards ...................63
Figure 25: Unsupported Trunk with Both Direct Connect and Fiber Optic Cables on XEM2-4QS Line Cards.....................64
Figure 26: Example of a Stack Trunk with XEM2-1CQ Line Cards......................................................................................65
Figure 27: Unsupported Trunk Because a Chassis is Connected to Three Other Chassis..................................................66
Figure 28: Unsupported Trunk with Intermediary Network Devices .....................................................................................67
Figure 29: NEMA 5-20P Plug and Receptacle .....................................................................................................................82
Figure 30: SBx908 Gen2 Switch Shipping Box ....................................................................................................................83
Figure 31: Lifting the Switch from the Shipping Box.............................................................................................................84
Figure 32: Removing the Switch from the Protective Shipping Bag.....................................................................................84
Figure 33: Pre-installed Items on the Front and Side Panels...............................................................................................85
Figure 34: Pre-installed Items on the Rear Panel.................................................................................................................86
Figure 35: Accessory Kit.......................................................................................................................................................87
Figure 36: Items in the Shipping Box for the SBxPWRSYS2 AC Power Supply..................................................................88
Figure 37: Items in the Shipping Box for the SBxPWRSYS1-80 DC Power Supply.............................................................89
Figure 38: Chassis Orientations in the Equipment Rack......................................................................................................93
Figure 39: Chassis Orientations in the Equipment Rack......................................................................................................94
Figure 40: Chassis Orientations in the Equipment Rack......................................................................................................95
Figure 41: Example of Adjusting the Equipment Rack Brackets ..........................................................................................96
Figure 42: Securing the Chassis to the Equipment Rack.....................................................................................................97
Figure 43: Stripping the Grounding Wire..............................................................................................................................98
Figure 44: Removing the Grounding Lug from the Chassis..................................................................................................99
Figure 45: Attaching the Grounding Wire to the Grounding Lug...........................................................................................99
Figure 46: Installing the Grounding Lug and Wire..............................................................................................................100
Figure 47: Removing the Blank Power Supply Panel from Power Supply Slot B...............................................................102
Figure 48: Lifting the Locking Handle on the SBxPWRSYS2 Power Supply......................................................................102
Figure 49: Sliding the SBxPWRSYS2 AC Power Supply into the Chassis.........................................................................103
Figures

Figures
10
Figure 50: Lowering the Locking Handle on the SBxPWRSYS2 AC Power Supply...........................................................103
Figure 51: On/Off Switch on the SBxPWRSYS1-80 DC Power Supply..............................................................................106
Figure 52: Loosening the Handle locking Screw on the SBxPWRSYS1-80 DC Power Supply..........................................106
Figure 53: Lifting the Locking Handle on the SBxPWRSYS1-80 DC Power Supply...........................................................107
Figure 54: Inserting the SBxPWRSYS1-80 DC Power Supply...........................................................................................107
Figure 55: Lowering the Locking Handle on the SBxPWRSYS1-80 DC Power Supply......................................................108
Figure 56: Removing a Blank Line Card Cover ..................................................................................................................109
Figure 57: Removing the Ethernet Line Card from the Anti-static Bag...............................................................................110
Figure 58: Sliding the Ethernet Line Card into the Slot.......................................................................................................111
Figure 59: Seating an Ethernet Line Card in the Chassis...................................................................................................112
Figure 60: Tightening the Two Captive Screws on the Ethernet Line Card........................................................................112
Figure 61: Installing a Blank Slot Cover..............................................................................................................................113
Figure 62: Tightening the Captive Screws on a Blank Slot Cover......................................................................................114
Figure 63: Lifting the Locking Handle on the Blank Power Supply Slot Cover ...................................................................115
Figure 64: Aligning the Blank Power Supply Cover in the Slot...........................................................................................116
Figure 65: Lowering the Locking Handle on the Blank Power Supply Slot Cover ..............................................................116
Figure 66: Installing the Power Cord Retaining Clips .........................................................................................................117
Figure 67: Components on the SBxPWRSYS1-80 DC Power Supply................................................................................121
Figure 68: Grounding Wire Terminal...................................................................................................................................122
Figure 69: Stripping the Stranded Grounding Wire.............................................................................................................123
Figure 70: Attaching the Stranded Grounding Wire to the Grounding Terminal.................................................................123
Figure 71: On/Off Switch on the SBxPWRSYS1-80 DC Power Supply..............................................................................124
Figure 72: Removing the Nut and Washer from the Grounding Post .................................................................................125
Figure 73: Attaching the Grounding Lug and Wire to the Grounding Post..........................................................................126
Figure 74: Securing the Grounding Wire ............................................................................................................................127
Figure 75: Stripping the solid or Stranded Grounding Wire................................................................................................128
Figure 76: Attaching the Bare Grounding Wire to the Grounding Post...............................................................................129
Figure 77: Securing the Bare Grounding Wire to the Grounding Post................................................................................130
Figure 78: Power Wire Terminals .......................................................................................................................................131
Figure 79: Stripping the Power Wires.................................................................................................................................132
Figure 80: Attaching the Power Wires to the Straight Terminal Lugs.................................................................................132
Figure 81: Opening the Plastic Cover.................................................................................................................................133
Figure 82: Removing the Terminal Screws.........................................................................................................................134
Figure 83: Connecting the Positive (+) Power Wire with a Straight Terminal.....................................................................135
Figure 84: Connecting the Negative (-) Power Wire with a Straight Terminal ....................................................................136
Figure 85: Closing the Plastic Cover over the Terminal Connectors..................................................................................137
Figure 86: Tightening the Handle Locking Screw...............................................................................................................138
Figure 87: Attaching the Power Wires to the Right Angle Terminal Lugs...........................................................................139
Figure 88: Removing the Plastic Cover..............................................................................................................................140
Figure 89: Removing the Terminal Screws.........................................................................................................................141
Figure 90: Connecting the Positive (+) Power Wire with a Right Angle Terminal...............................................................142
Figure 91: Connecting the Negative (-) Power Wire with a Right Angle Terminal..............................................................143
Figure 92: Tightening the Handle Locking Screw...............................................................................................................144
Figure 93: Stripping Solid or Stranded DC Power Wires....................................................................................................145
Figure 94: Connecting the Positive Wire With Bare Wire ...................................................................................................146
Figure 95: Connecting the Negative Lead Wire with Bare Wire..........................................................................................147
Figure 96: Connecting the AC Power Cord.........................................................................................................................155
Figure 97: Securing the Power Cord with the Retaining Clip..............................................................................................155
Figure 98: Connecting the Power Cord to an AC Power Source........................................................................................156
Figure 99: Connecting the Management Cable to the Console RS-232 Port.....................................................................158
Figure 100: User Exec Mode Prompt..................................................................................................................................159
Figure 101: SHOW STACK Command...............................................................................................................................175
Figure 102: Handle on 100Gbps Transceivers for the XEM2-1CQ Line Card....................................................................179
Figure 103: Installing an SFP Transceiver in the XEM2-12XS Line Card...........................................................................181
Figure 104: Installing a Fiber Optic Transceiver in the XEM2-4QS Line Card....................................................................181
Figure 105: Installing an 100Gbps QSFP28 Transceiver in the XEM2-1CQ Line Card......................................................182
Figure 106: Installing SP10TW Cables in the XEM2-12XS Line Card................................................................................184
Figure 107: Sliding the QSFPCU Cable into the Port.........................................................................................................184
Figure 108: Disconnecting the AC Power Cord from the Power Source ............................................................................188
Figure 109: Disconnecting the AC Power Cord from the Chassis......................................................................................189

AT-SBx908 GEN2 Installation Guide for Virtual Chassis Stacking
11
Figure 110: Lifting the Locking Handle on the SBxPWRSYS2 AC Power Supply..............................................................189
Figure 111: Removing the SBxPWRSYS2 AC Power Supply............................................................................................190
Figure 112: Loosening the Screw on the Locking Handle..................................................................................................191
Figure 113: Opening the Plastic Window over the Terminal Block.....................................................................................192
Figure 114: Removing the Negative Lead Wire..................................................................................................................193
Figure 115: Removing the Positive Lead Wire from the Terminal Block ............................................................................194
Figure 116: Reinstalling the Screws on the Positive and Negative Terminals....................................................................195
Figure 117: Closing the Plastic Cover ................................................................................................................................196
Figure 118: Removing the Grounding Wire........................................................................................................................197
Figure 119: Reinstalling the Nut and Washer on the Grounding Post................................................................................198
Figure 120: Lifting the Locking Handle and Removing the Power Supply..........................................................................199
Figure 121: Installing the Blank Power Supply Slot Cover .................................................................................................200
Figure 122: Lowering the Locking Handle on the Power Supply Slot Cover......................................................................201
Figure 123: Loosening the Screws on the Ethernet Line Card...........................................................................................205
Figure 124: Disconnecting an Ethernet Line Card from the Chassis..................................................................................206
Figure 125: Sliding an Ethernet Line Card from the Chassis..............................................................................................207
Figure 126: Placing the Ethernet Line Card in its Anti-static Bag.......................................................................................208
Figure 127: Loosening the Screws on the FAN08 Module.................................................................................................209
Figure 128: Disconnecting the FAN08 Module from the Chassis.......................................................................................210
Figure 129: Aligning the FAN08 Module in the Chassis Slot..............................................................................................211
Figure 130: Seating the FAN08 Module on the Connector in the Chassis.........................................................................211
Figure 131: Tightening the Two Captive Screws on the FAN08 Module............................................................................212
Figure 132: Switch Height and Width.................................................................................................................................220
Figure 133: Switch Depth and Locations of Bracket Holes.................................................................................................221
Figure 134: Pin Layout (Front View) of Twisted Pair Ports.................................................................................................227

Figures
12

13
Tables
Table 1: XEM2 Series Line Cards .......................................................................................................................................24
Table 2: Twisted Pair Ports on the XEM2-8XSTm Line Card ..............................................................................................26
Table 3: Link and Activity LEDs for the Twisted Pair Ports on the XEM2-8XSTm Line Card ..............................................27
Table 4: Link and Activity LEDs for the SFP Ports on the XEM2-8XSTm Line Card ...........................................................28
Table 5: Twisted Pair Ports on the XEM2-12XT Line Card .................................................................................................29
Table 6: Link and Activity LEDs on the XEM2-12XT Line Card ...........................................................................................30
Table 7: Twisted Pair Ports on the XEM2-12XTm Line Card ..............................................................................................31
Table 8: Link and Activity LEDs on the XEM2-12XTm Line Card ........................................................................................32
Table 9: Link and Activity LEDs on the XEM2-12XS Line Card ...........................................................................................34
Table 10: Link and Activity LEDs on the XEM2-4QS Line Card ..........................................................................................35
Table 11: Link and Activity LED on the XEM2-1CQ Line Card ............................................................................................37
Table 12: NET MGMT Port LED ..........................................................................................................................................40
Table 13: PORT Parameter Format .....................................................................................................................................46
Table 14: Software and Hardware Releases .......................................................................................................................48
Table 15: Maximum Number of Trunk Ports Per Switch ......................................................................................................57
Table 16: Stacking Worksheet .............................................................................................................................................72
Table 17: Stacking Worksheet Columns ..............................................................................................................................72
Table 18: Example of a Completed Stacking Worksheet ....................................................................................................74
Table 19: Hardware Installation Procedures ........................................................................................................................76
Table 20: Configuring the Master Switch ...........................................................................................................................161
Table 21: Verifying the Master Switch ...............................................................................................................................164
Table 22: Configuring a Member Switch - Part I ................................................................................................................167
Table 23: Configuring the Member Switch - Part II ............................................................................................................170
Table 24: Verifying the Configuration of a Member Switch ................................................................................................171
Table 25: XEM2 Line Cards and Fiber Optic Transceivers ...............................................................................................180
Table 26: XEM2 Line Cards and Direct Connect Cables ...................................................................................................183
Table 27: Hot-swapping Guidelines for XEM2 Line Cards ................................................................................................202
Table 28: Product Dimensions ...........................................................................................................................................220
Table 29: Product Weights ................................................................................................................................................222
Table 30: Ventilation Requirements ...................................................................................................................................222
Table 31: Environmental Specifications .............................................................................................................................223
Table 32: AC Voltage and Frequency Requirements ........................................................................................................224
Table 33: DC Voltage Requirements .................................................................................................................................224
Table 34: Maximum Power Consumption (Watts) .............................................................................................................224
Table 35: Typical Power Savings in eco-friendly Mode (Watts) ........................................................................................225
Table 36: Maximum Power Supply Efficiency (Based on 100V Input Voltage) .................................................................225
Table 37: Heat Dissipation (British Thermal Units/Hour) ...................................................................................................225
Table 38: Product Certifications .........................................................................................................................................226
Table 39: Pin Signals on RJ-45 Twisted Pair Ports at 100Mbps ......................................................................................227
Table 40: Pin Signals on Twisted Pair Ports at 1/2.5/5/10Gbps ........................................................................................228
Table 41: RJ-45 Pin Signals for the Console Port on the Management Panel ..................................................................229
Table 42: RJ-45 Pin Signals for 10 or 100Mbps for the NET MGMT Port on the Management Panel ..............................230

Tables
14

15
Preface
This guide contains the installation instructions for the SBx908 GEN2
advanced modular, Layer 3 Ethernet switch. 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 switch as a stand-
alone device, refer to the SBx908 GEN2 Installation Guide for Stand-alone
Switches.
This preface contains the following sections:
“Document Conventions” on page 16
“Contacting Allied Telesis” on page 17

Preface
16
Document Conventions
This document uses the following conventions:
Note
Notes provide additional information.
Caution
Cautions inform you that performing or omitting a specific action
may result in equipment damage or loss of data.
Warning
Warnings inform you that performing or omitting a specific action
may result in bodily injury.

SBx908 GEN2 Installation Guide for Virtual Chassis Stacking
17
Contacting Allied Telesis
If you need assistance with this product, you may contact Allied Telesis
technical support by going to the Support & Services section of the Allied
Telesis web site at www.alliedtelesis.com/support. You can find links for
the following services on this page:
24/7 Online Support — Enter our interactive support center to
search for answers to your product questions in our knowledge
database, to check support tickets, to learn about RMAs, and to
contact Allied Telesis technical experts.
USA and EMEA phone support — Select the phone number that
best fits your location and customer type.
Hardware warranty information — Learn about Allied Telesis
warranties and register your product online.
Replacement Services — Submit a Return Merchandise
Authorization (RMA) request via our interactive support center.
Documentation — View the most recent installation and user
guides, software release notes, white papers, and data sheets for
your products.
Software Downloads — Download the latest software releases for
your managed products.
For sales or corporate information, go to www.alliedtelesis.com/
purchase and select your region.

Preface
18

19
Chapter 1
Overview
The chapter contains the following sections:
“Overview” on page 20
“SBx908 GEN2 Chassis” on page 22
“XEM2 Ethernet Line Cards” on page 23
“XEM2-8XSTm Line Card” on page 26
“XEM2-12XT Line Card” on page 29
“XEM2-12XTm Line Card” on page 31
“XEM2-12XS Line Card” on page 33
“XEM2-4QS Line Card” on page 35
“XEM2-1CQ Line Card” on page 37
“Management Panel” on page 39
“Power Supplies” on page 43
“FAN08 Units” on page 45
“Specifying Ports in the Command Line Interface” on page 46
“Software and Hardware Releases” on page 48

Chapter 1: Overview
20
Overview
The SBx908 GEN2 Switch is an advanced Layer 3+ modular switch. The
main features are listed here.
SBx908 GEN2
Chassis The chassis has the following hardware features:
3RU height
Eight slots for XEM2 Ethernet line cards
Each line card slot has 160Gbps connectivity over the backplane.
The unit supports two power supplies for primary and redundant
power.
The chassis comes with two pre-installed brackets for a standard
19-inch equipment rack.
The unit comes with two pre-installed fan modules, providing front-
to-back airflow.
The line cards, power supplies, and fan modules are hot-
swappable.
XEM2 Ethernet
Line Cards The XEM2 Ethernet line cards are listed here:
XEM2-8XSTm Card features four 100Mbps and 1/2.5/5/10Gbps
twisted pair ports with RJ-45 connectors and four ports for 1Gbps
SFP or 10Gbps SFP+ transceivers.
XEM2-12XT Card features 12 100Mbps and 1/10Gbps, twisted
pair ports with RJ-45 connectors.
XEM2-12XTm Card features 12 100Mbps and 1/2.5/5/10Gbps,
twisted pair ports with RJ-45 connectors.
XEM2-12XS Card features 12 ports for 1Gbps SFP or 10Gbps
SFP+ transceivers.
XEM2-4QS Card features four ports for 40Gbps QSFP+
transceivers.
XEM2-1CQ Card features one port for a 100Gbps QSFP28
transceiver.
Ethernet 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
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.