Allied Telesis AT-x550-18XTQ User manual

613-002435 Rev. A
x550 Series
Stackable 10Gigabit Intelligent Access Ethernet Switches
AlliedWare Plus™ v5.4.7A-0
AT-x550-18XTQ
AT-x550-18XSQ
Installation Guide for Virtual Chassis
Stacking

Copyright ©2017 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, EN55032 Class A, EN61000-3-2, EN61000-3-3, VCCI Class A,
C-TICK, CE
EMC (Immunity): EN55024
Electrical Safety: EN60950-1 (TUV), UL 60950-1 (CULUS)
U.S. Federal Communications Commission
Radiated Energy
Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15
of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with this instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.
Note: Modifications or changes not expressly approved of by the manufacturer or the FCC, can void your right to operate
this equipment.
Industry Canada
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
Warning: In a domestic environment this product may cause radio interference in which case
the user may be required to take adequate measures.
Laser Safety EN60825

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

5
Preface ...............................................................................................................................................................................11
Document Conventions .......................................................................................................................................................12
Contacting Allied Telesis .....................................................................................................................................................13
Chapter 1: Overview ........................................................................................................................................................ 15
Front and Rear Panels ........................................................................................................................................................16
Management Panel .............................................................................................................................................................18
Features ..............................................................................................................................................................................19
x550 Models.................................................................................................................................................................19
1Gbps/10Gbps Twisted Pair Ports...............................................................................................................................19
1Gbps SFP or 10Gbps SFP+ Transceiver Slots ..........................................................................................................19
40Gbps QSFP+ Transceiver Slots...............................................................................................................................20
LEDs.............................................................................................................................................................................20
Installation Options.......................................................................................................................................................21
Management Software and Interfaces .........................................................................................................................21
Management Methods..................................................................................................................................................21
1Gbps/10Gbps Twisted Pair Ports ......................................................................................................................................22
1Gbps SFP or 10Gbps SFP+ Transceiver Slots .................................................................................................................23
QSFP+ Transceiver Slots....................................................................................................................................................24
eco-friendly Button...............................................................................................................................................................26
VCStack Feature .................................................................................................................................................................27
LEDs....................................................................................................................................................................................28
LEDs for the 1Gbps/10Gbps Twisted Pair Ports..........................................................................................................28
LEDs for the 1Gbps SFP and 10Gbps SFP+ Transceiver Slots ..................................................................................29
LEDs for the 40Gbps QSFP+ Transceiver Slots..........................................................................................................30
Switch ID LED ..............................................................................................................................................................32
USB Port..............................................................................................................................................................................34
Console Port........................................................................................................................................................................35
Power Supply ......................................................................................................................................................................36
Chapter 2: Virtual Chassis Stacking .............................................................................................................................. 37
Overview..............................................................................................................................................................................38
Stacking Guidelines.............................................................................................................................................................39
Stack Trunk .........................................................................................................................................................................40
Master and Member Switches.............................................................................................................................................41
Selection of the Master Switch.....................................................................................................................................41
Switch ID Numbers..............................................................................................................................................................43
Optional Feature Licenses...................................................................................................................................................44
Chapter 3: Beginning the Installation ............................................................................................................................ 45
Reviewing Safety Precautions.............................................................................................................................................46
Choosing a Site for the Switch ............................................................................................................................................50
Unpacking the Switch..........................................................................................................................................................51
Chapter 4: Installing the Switch on a Table or in an Equipment Rack ....................................................................... 55
Installing the Switch on a Table or Desktop.........................................................................................................................56
Overview of Installing the Switch in an Equipment Rack.....................................................................................................57
Installing the Switch in an Equipment Rack with the AT-RKMT-J14 Brackets ....................................................................59
Required Items for the AT-RKMT-J14 Brackets...........................................................................................................59
Switch Orientations in the Equipment Rack.................................................................................................................59
Installing the Switch with the AT-RKMT-J14 Brackets .................................................................................................61
Contents

Contents
6
Installing the Switch in an Equipment Rack with the AT-RKMT-J15 Bracket ..................................................................... 64
Required Items for the AT-RKMT-J15 Bracket............................................................................................................ 64
Installing the Switch with the AT-RKMT-J15 Bracket .................................................................................................. 64
Chapter 5: Installing the Switch on a Wall .....................................................................................................................71
Switch Orientations on a Wall............................................................................................................................................. 72
Installation Guidelines......................................................................................................................................................... 73
Tools and Material....................................................................................................................................................... 73
Plywood Base for a Wall with Wooden Studs..................................................................................................................... 75
Installing a Plywood Base................................................................................................................................................... 77
Installing the Switch on a Plywood Base ............................................................................................................................ 78
Installing the Switch on a Concrete Wall............................................................................................................................. 81
Chapter 6: Verifying the Status of the Switches ...........................................................................................................85
Introduction......................................................................................................................................................................... 86
Verifying the Status of the VCStack Feature ...................................................................................................................... 87
Starting a Local Management Session............................................................................................................................... 91
Enabling the VCStack Feature............................................................................................................................................ 93
Comparing the AlliedWare Plus Version Numbers and Feature Licenses.......................................................................... 95
Chapter 7: Installing the Stacking QSFP+ Transceivers ..............................................................................................99
Installing AT-QSFPSR4 or AT-QSFPLR4 Transceivers................................................................................................... 100
Installing AT-QSFPCU Cables.......................................................................................................................................... 101
Chapter 8: Powering On and Verifying the Stack .......................................................................................................105
Powering On the Switches Sequentially........................................................................................................................... 106
Powering On the Switches Simultaneously ...................................................................................................................... 108
Verifying the Stack............................................................................................................................................................ 110
Setting the Priority Numbers...................................................................................................................................... 111
Monitoring the Initialization Processes.............................................................................................................................. 113
Specifying Ports in the Command Line Interface for Stacks............................................................................................. 116
Chapter 9: Cabling the Networking Ports ....................................................................................................................117
Cabling the 1Gbps/10Gbps Ports on the AT-x550-18XTQ Switch ................................................................................... 118
Guidelines to Handling SFP, SFP+, and QSFP+ Transceivers........................................................................................ 119
Installing 1Gbps SFP or 10Gbps SFP+ Transceivers in the AT-x550-18XSQ Switch...................................................... 120
Installing AT-SP10TW Direct Connect Twinax Cables in the AT-x550-18XSQ Switch .................................................... 123
Chapter 10: Troubleshooting ........................................................................................................................................125
Appendix A: Technical Specifications .........................................................................................................................129
Physical Specifications ..................................................................................................................................................... 130
Environmental Specifications............................................................................................................................................ 131
Power Specifications......................................................................................................................................................... 132
Certifications..................................................................................................................................................................... 133
RJ-45 Twisted Pair Port Pinouts....................................................................................................................................... 134
RJ-45 Style Serial Console Port Pinouts .......................................................................................................................... 135

7
Figure 1: Front Panels of the AT-x550-18XTQ and AT-x550-18XSQ Switches...................................................................16
Figure 2: Back Panel............................................................................................................................................................17
Figure 3: Management Panel ...............................................................................................................................................18
Figure 4: QSFP+ to SFP+ Breakout Cable...........................................................................................................................24
Figure 5: Link and Activity LEDs for the 1Gbps/10Gbps Ports on the AT-x550-18XTQ, Switch..........................................28
Figure 6: Link and Activity LEDs for the 1Gbps SFP and 10Gbps Slot+ Slots on the AT-x550-18XSQ Switch...................29
Figure 7: LEDs for the 40Gbps QSFP+ Slots.......................................................................................................................30
Figure 8: Switch ID LED.......................................................................................................................................................32
Figure 9: Switch ID LED.......................................................................................................................................................32
Figure 10: Switch ID LEDs in Low Power Mode...................................................................................................................33
Figure 11: Stack of Two Switches........................................................................................................................................40
Figure 12: AT-x550-18XTQ or AT-x550-18XSQ Switch Shipping Box.................................................................................51
Figure 13: Accessory Kit.......................................................................................................................................................52
Figure 14: Accessory Kit (Continued)...................................................................................................................................53
Figure 15: AT-RKMT-J14 Brackets and Switch....................................................................................................................57
Figure 16: AT-RKMT-J15 Bracket........................................................................................................................................57
Figure 17: AT-RKMT-J15 Bracket with Switches..................................................................................................................58
Figure 18: Bracket Holes......................................................................................................................................................59
Figure 19: AT-RKMT-J14 Bracket Holes..............................................................................................................................60
Figure 20: Switch Orientations with the Front Panel Facing the Front of the Equipment Rack............................................60
Figure 21: Switch Orientations with the Rear Panel Facing the Front of the Equipment Rack.............................................61
Figure 22: Attaching the Handles to the AT-RKMT-J14 Brackets ........................................................................................62
Figure 23: Attaching the AT-RKMT-J14 Brackets to the Switch...........................................................................................62
Figure 24: Installing the Switch in an Equipment Rack.........................................................................................................63
Figure 25: Installing the AT-RKMT-J15 Bracket in the Equipment Rack..............................................................................64
Figure 26: Loosening the Two Thumbscrews on the Front of the AT-RKMT-J15 Bracket...................................................65
Figure 27: Sliding Out the Tray from the AT-RKMT-J15.......................................................................................................65
Figure 28: Removing the Plastic Feet from the Bottom Panel of the Switch........................................................................66
Figure 29: Placing a Switch in the AT-RKMT-J15 Bracket...................................................................................................67
Figure 30: Securing the Switch to the AT-RKMT-J15 Bracket..............................................................................................67
Figure 31: Sliding in the Bracket Tray...................................................................................................................................68
Figure 32: Tightening the Two Thumbscrews on the AT-RKMT-J15 Bracket ......................................................................69
Figure 33: Positions of the Switch on the Wall .....................................................................................................................72
Figure 34: Switch on the Wall with a Plywood Base.............................................................................................................75
Figure 35: Steps to Installing the Switch with a Plywood Base ............................................................................................76
Figure 36: Installing the Wall Brackets .................................................................................................................................79
Figure 37: Securing the Switch to the Plywood Base...........................................................................................................80
Figure 38: Marking the Locations of the Bracket Holes on a Concrete Wall ........................................................................82
Figure 39: Installing the Switch on a Concrete Wall.............................................................................................................83
Figure 40: Installing the Power Cord Retaining Clip.............................................................................................................87
Figure 41: Connecting the AC Power Cord to the Switch.....................................................................................................88
Figure 42: Lowering the Power Cord Retaining Clip.............................................................................................................88
Figure 43: Connecting the Power Cord to an AC Power Source..........................................................................................89
Figure 44: Disconnecting the Power Cord from an AC Power Source.................................................................................90
Figure 45: Connecting the Management Cable to the Console Port....................................................................................91
Figure 46: User Exec Mode Prompt .....................................................................................................................................92
Figure 47: Moving to the Privileged Exec Mode with the ENABLE Command.....................................................................93
Figure 48: Moving to the Global Configuration Mode with the CONFIGURE TERMINAL Command ..................................93
Figure 49: Activating VCStack with the STACK ENABLE Command...................................................................................93
Figures

Figures
8
Figure 50: Returning to the Privileged Exec Mode with the EXIT Command .......................................................................93
Figure 51: Saving the Change with the WRITE Command...................................................................................................94
Figure 52: Rebooting the Switch with the REBOOT Command............................................................................................94
Figure 53: SHOW SYSTEM Command................................................................................................................................96
Figure 54: SHOW LICENSE BRIEF Command....................................................................................................................96
Figure 55: Removing the Dust Cover from Slot 17.............................................................................................................101
Figure 56: Sliding the AT-QSFPCU Cable into Slot 17.......................................................................................................102
Figure 57: Removing the Dust Cover from Slot 21.............................................................................................................102
Figure 58: Installing the AT-QSFPCU Cable in Slot 21 ......................................................................................................103
Figure 59: SHOW STACK Command.................................................................................................................................110
Figure 60: Moving to the Global Configuration Mode with the CONFIGURE TERMINAL Command.................................111
Figure 61: Returning to the Privileged Exec Mode .............................................................................................................112
Figure 62: Saving the Priority Values with the WRITE Command......................................................................................112
Figure 63: Switch Initialization Messages...........................................................................................................................113
Figure 64: Switch Initialization Messages (Continued).......................................................................................................114
Figure 65: Switch Initialization Messages (Continued).......................................................................................................115
Figure 66: PORT Parameter in the Command Line Interface.............................................................................................116
Figure 67: Removing the Dust Plug from an SFP Slot........................................................................................................120
Figure 68: Installing an SFP Transceiver............................................................................................................................121
Figure 69: Removing the Dust Cover from an SFP or SFP+ Transceiver..........................................................................121
Figure 70: Positioning the SFP or SFP+ Handle in the Upright Position............................................................................122
Figure 71: Connecting a Fiber Optic Cable to an SFP or SFP+ Transceiver .....................................................................122
Figure 72: Installing AT-SP10TW Cables...........................................................................................................................123
Figure 73: RJ-45 Socket Pin Layout (Front View)...............................................................................................................134

9
Tables
Table 1: Basic Features .......................................................................................................................................................19
Table 2: Twisted Pair Ports on the AT-x550-18XTQ Switch ................................................................................................22
Table 3: Link and Activity LEDs on the 1Gbps/10Gbps Ports on the AT-x550-18XTQ Switch ............................................28
Table 4: Link and Activity Status LEDs on the 1Gbps and 10Gbps Ports on the AT-x550-18XTQ Switch .........................29
Table 5: Link and Activity Status LEDs for the 40Gbps QSFP+ Transceiver Slots with QSFP+ Transceivers ...................31
Table 6: Link and Activity Status LEDs for the 40Gbps QSFP+ Transceiver Slots with Breakout Cables ..........................31
Table 7: PORT Parameter Format .....................................................................................................................................116
Table 8: Product Dimensions .............................................................................................................................................130
Table 9: Product Weights ..................................................................................................................................................130
Table 10: Ventilation Requirements ...................................................................................................................................130
Table 11: Environmental Specifications .............................................................................................................................131
Table 12: Maximum Power Consumptions ........................................................................................................................132
Table 13: Input Voltages ....................................................................................................................................................132
Table 14: Heat Dissipation ................................................................................................................................................132
Table 15: Product Certifications .........................................................................................................................................133
Table 16: Pin Signals for 1Gbps or 10Gbps ......................................................................................................................134
Table 17: RJ-45 Style Serial Console Port Pin Signals .....................................................................................................135

Tables
10

11
Preface
This guide contains the installation instructions for the x550 Series of
stackable 10 Gigabit, Layer 3 Ethernet switches. This preface contains the
following sections:
“Document Conventions” on page 12
“Contacting Allied Telesis” on page 13
Note
This guide explains how to install the switches in a virtual stack with
the Virtual Chassis Stacking (VCStack™) feature. For instructions
on how to install the switches as stand-alone units, refer to the x550
Series Installation Guide for Stand-alone Switches.

Preface
12
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.

x550 Series Installation Guide for Virtual Chassis Stacking
13
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
14

15
Chapter 1
Overview
This chapter contains the following sections:
“Front and Rear Panels” on page 16
“Management Panel” on page 18
“Features” on page 19
“1Gbps/10Gbps Twisted Pair Ports” on page 22
“1Gbps SFP or 10Gbps SFP+ Transceiver Slots” on page 23
“QSFP+ Transceiver Slots” on page 24
“eco-friendly Button” on page 26
“VCStack Feature” on page 27
“LEDs” on page 28
“USB Port” on page 34
“Console Port” on page 35
“Power Supply” on page 36
Note
This guide explains how to install the switches as a virtual stack with
the Virtual Chassis Stacking (VCStack™) feature. For instructions
on how to install switches as stand-alone units, refer to the x550
Series Installation Guide for Stand-alone Switches.

Chapter 1: Overview
16
Front and Rear Panels
The front panels of the x550 Series switches are shown in Figure 1.
Figure 1. Front Panels of the AT-x550-18XTQ and AT-x550-18XSQ
Switches
The rear panel of the switches is shown in Figure 2 on page 17.
AT-x550-18XSQ
AT-x550-18XTQ
1Gbps or 10Gbps Ports Management
Panel
40Gbps QSFP+
Transceiver Slots
Management
Panel
40Gbps QSFP+
Transceiver Slots
1Gbps SFP or 10Gbps SFP+ Transceiver Slots

x550 Series Installation Guide for Virtual Chassis Stacking
17
Figure 2. Back Panel
AC Power Supply Connector

Chapter 1: Overview
18
Management Panel
Figure 3 identifies the components on the management panel.
Figure 3. Management Panel
Console Management
eco-friendly
Button
Switch
Port
ID LED USB Port

x550 Series Installation Guide for Virtual Chassis Stacking
19
Features
The Allied Telesis x550 Series switches are stackable 10 Gigabit, Layer 3
Ethernet switches. The following sections lists the features of the switches:
x550 Models Table 1 lists the basic features of the x550 Switches.
Additional information is listed here:
The 40Gbps QSFP+ slots can be used as either regular networking
ports or stacking ports with the VCStack feature.
When used as regular networking ports the 40Gbps QSFP+ slots
support 40Gbps transceivers or breakout cables, which convert the
slots into four 10Gbps ports.
The switches come with one pre-installed power supply. It is not
field-replaceable.
1Gbps/10Gbps
Twisted Pair
Ports
The sixteen twisted pair ports on the AT-x550-18XTQ Switch have these
features:
1Gbps or 10Gbps operation
100 meters (328 feet) maximum operating distance per port
Auto-Negotiation for speed
Full-duplex mode only
Port Link/Activity (L/A) LEDs
1Gbps SFP or
10Gbps SFP+
Transceiver Slots
The sixteen 1Gbps/10Gbps transceiver slots in the AT-x550-18XSQ
Switch support the following types of transceivers:
1Gbps SX/LX SFP transceivers
10Gbps SR/LR SFP+ fiber optic transceivers
10Gbps AT-SP10TW direct connect twinax cables with SFP+
Table 1. Basic Features
Model
1Gbps or
10Gbps
TwistedPair
Ports
1GBbps
SFP or
10Gbps
SFP+
Transceiver
Slots
40Gbps
QSFP+
Transceiver
Slots
VCStack
AT-x550-18XTQ 16 0 2 Yes
AT-x550-18XSQ 0 16 2 Yes

Chapter 1: Overview
20
transceiver-style connectors
Additional information about the transceiver slots is given here:
They do not support 100Mbps transceivers.
They support full-duplex mode only.
SFP or SFP+ transceivers must be purchased separately. For a list of
supported transceivers, refer to the x550 Series product sheet on the
Allied Telesis web site.
40Gbps QSFP+
Transceiver Slots The two QSFP+ transceiver slots support the following types of
transceivers:
AT-QSFPSR4 transceiver - 150m using multi-mode fiber optic
cable
AT-QSFPLR4 transceiver - 10k with single-mode fiber optic cable
AT-QSFP1CU and AT-QSFP3CU direct connect cables in lengths
of 1 and 3 meters, respectively
AT-QSFP-4SFP10G-3CU and AT-QSFP-4SFP10G-5CU breakout
cables in lengths of 3 and 5 meters, respectively
Note
The QSFP+ slots are initially configured as stacking slots for the
VCStack feature. If you plan to use the switch as a stand-alone unit,
you can use the slots and transceivers as regular networking ports
by disabling the VCStack feature. For instructions, refer to x550
Series Installation Guide for Stand-alone Switches.
QSFP+ transceivers must be purchased separately. For a list of supported
transceivers, refer to the x550 Series data sheet on the Allied Telesis web
site.
For instructions on the VCStack feature, refer to the x550 Series
Installation Guide for Virtual Chassis Stacking.
LEDs Here are the port LEDs:
Link/activity LEDs for the 1Gbps/10Gbps twisted pair ports on the
AT-x550-18XTQ Switch
Link/activity LEDs for the SFP and SFP+ transceiver slots on the
AT-x550-18XSQ Switch
Link/activity LEDs for the QSFP+ transceiver slots
Stack ID number LED
eco-friendly button turns off the LEDs to conserve electricity