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Allied Telesis x510 User Manual

x510 Series
Gigabit Ethernet Switches
AT-x510-28GTX
AT-x510-28GPX
AT-x510-28GSX
AT-x510-52GTX
AT-x510-52GPX
Installation Guide for Virtual Chassis Stacking
613-001780 Rev. B
All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesis, Inc.
Allied Telesis and the Allied Telesis logo are trademarks of Allied Telesis, Incorporated. All other product names, company names, logos or other designations mentioned herein are trademarks or registered trademarks of their respective owners.
Allied Telesis, Inc. reserves the right to make changes in specifications and other information contained in this document without prior written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesis, Inc. be liable for any incidental, special, indirect, or consequential damages whatsoever, including but not limited to lost profits, arising out of or related to this manual or the information contained herein, even if Allied Telesis, Inc. has been advised of, known, or should have known, the possibility of such damages.
Electrical Safety and Emissions Standards
Laser Safety EN60825
This product meets the following standards.
U.S. Federal Communications Commission
Radiated Energy
Note: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with this instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Note: Modifications or changes not expressly approved of by the manufacturer or the FCC, can void your right to operate this equipment.
Industry Canada
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
RFI Emissions: FCC Class A, EN55022 Class A, EN61000-3-2, EN61000-3-3, VCCI Class A, C-TICK, CE
Warning: In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.
EMC (Immunity): EN55024
Electrical Safety: EN60950-1 (TUV), UL 60950-1 (
CULUS
)
3
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.
4

Contents

Preface .............................................................................................................................................................................. 11
Document Conventions .......................................................................................................................................................12
Contacting Allied Telesis .....................................................................................................................................................13
Chapter 1: Overview ........................................................................................................................................................ 15
Features ..............................................................................................................................................................................16
x510 Models .................................................................................................................................................................16
10/100/1000 Mbps Twisted Pair Ports .........................................................................................................................16
Power Over Ethernet....................................................................................................................................................16
SFP Slots .....................................................................................................................................................................16
SFP+ Slots ...................................................................................................................................................................17
Stacking Slots...............................................................................................................................................................17
LEDs.............................................................................................................................................................................18
Installation Options.......................................................................................................................................................18
MAC Address Table .....................................................................................................................................................18
Management Software and Interfaces .........................................................................................................................18
Management Methods..................................................................................................................................................18
Front and Back Panels ........................................................................................................................................................19
Management Panel .............................................................................................................................................................22
10/100/1000Base-T Twisted Pair Ports ...............................................................................................................................23
Speed ...........................................................................................................................................................................23
Duplex Mode ................................................................................................................................................................23
Wiring Configuration.....................................................................................................................................................23
Maximum Distance.......................................................................................................................................................24
Cable Requirements.....................................................................................................................................................24
Port Pinouts..................................................................................................................................................................24
Power Over Ethernet ...........................................................................................................................................................25
PoE Standards .............................................................................................................................................................25
Powered Device Classes .............................................................................................................................................25
Cable Requirements.....................................................................................................................................................26
Power Budget...................................................................................................................
Port Prioritization ..........................................................................................................................................................28
Wiring Implementation..................................................................................................................................................29
SFP+ Slots...........................................................................................................................................................................30
Stacking SFP+ Slots............................................................................................................................................................31
eco-friendly Button...............................................................................................................................................................32
LEDs....................................................................................................................................................................................33
LEDs for the Twisted Pair Ports ...................................................................................................................................33
LEDs for the SFP Slots ................................................................................................................................................36
LEDs for the SFP+ Slots ..............................................................................................................................................37
LEDs for the Stacking Slots..........................................................................................................................................38
Switch ID LED ..............................................................................................................................................................39
USB Port..............................................................................................................................................................................41
Console Port........................................................................................................................................................................42
Power Supplies....................................................................................................................................................................43
............................................27
Chapter 2: Virtual Chassis Stacking .............................................................................................................................. 45
Overview..............................................................................................................................................................................46
Stacking Slots......................................................................................................................................................................47
5
Contents
Stacking Transceivers......................................................................................................................................................... 48
Stacking Port Topologies.................................................................................................................................................... 50
Master and Member Switches ............................................................................................................................................ 54
Selection of the Master Switch .................................................................................................................................... 54
ID Numbers ................................................................................................................................................................. 55
Specifying Ports in the Command Line Interface................................................................................................................ 56
Chapter 3: Beginning the Installation ............................................................................................................................ 57
Reviewing Safety Precautions ............................................................................................................................................ 58
Choosing a Site for the Switches........................................................................................................................................ 62
Planning a Stack................................................................................................................................................................. 63
Unpacking the Switch ......................................................................................................................................................... 65
Chapter 4: Installing the Switches on a Table or in an Equipment Rack ...................................................................67
Installing the Switches on a Table or Desktop .................................................................................................................... 68
Installing the Switch in an Equipment Rack ........................................................................................................................ 69
Chapter 5: Verifying the Status of VCStack ..................................................................................................................73
Verifying the Status of VCStack.......................................................................................................................................... 74
Activating the VCStack Feature.......................................................................................................................................... 75
Starting a Local Management Session ........................................................................................................................ 75
Activating VCStack ...................................................................................................................................................... 76
Chapter 6: Cabling the Stacking Ports .......................................................................................................................... 79
Cabling Switches with AT-StackXS/1.0 Transceivers......................................................................................................... 80
Cabling Switches with AT-StackOP/0.3 or AT-StackOP/9.0 Transceivers ......................................................................... 85
Chapter 7: Powering On the Stack ................................................................................................................................. 89
Powering On the Switches Individually............................................................................................................................... 90
Powering On the Switches Simultaneously ........................................................................................................................ 93
Verifying the Stack.............................................................................................................................................................. 95
Setting the Priority Numbers........................................................................................................................................ 96
Monitoring the Initialization Processes................................................................................................................................ 98
Chapter 8: Cabling the Networking Ports ....................................................................................................................101
Cabling the Twisted Pair Ports.......................................................................................................................................... 102
Installing SFP and SFP+ Transceivers ...........................................................................................
Installing SFP Modules in the AT-x510-28GSX Switch ............................................................................................. 105
Installing SFP and SFP+ Modules............................................................................................................................. 108
Chapter 9: Troubleshooting .......................................................................................................................................... 111
Appendix A: Technical Specifications ......................................................................................................................... 115
Physical Specifications ..................................................................................................................................................... 115
Environmental Specifications............................................................................................................................................ 116
Power Specifications......................................................................................................................................................... 116
Certifications ..................................................................................................................................................................... 117
RJ-45 Twisted Pair Port Pinouts....................................................................................................................................... 117
RJ-45 Style Serial Console Port Pinouts .......................................................................................................................... 119
Fiber Optic Specifications of the AT-StackOP/0.3 and AT-StackOP/9.0 Transceivers..................................................... 120
.................................. 104
6

Figures

Figure 1: Front Panels of the AT-x510-28GTX and AT-x510-28GPX Switches ...................................................................19
Figure 2: Front Panels of the AT-x510-28GSX, AT-x510-52GTX, and AT-x510-52GPX Switches......................................20
Figure 3: Back Panel of the AT-x510-28GTX, AT-x510-52GTX, and AT-x510-28GSX Switches ........................................21
Figure 4: Back Panel of the AT-x510-28GPX and AT-x510-52GPX Switches .....................................................................21
Figure 5: x510 Series Management Panel ...........................................................................................................................22
Figure 6: LEDs for the 10/100/1000Base-T Ports on the AT-x510-28GTX and AT-x510-52GTX Switches.........................33
Figure 7: LEDs for the 10/100/1000Base-T Ports on the AT-x510-28GPX and AT-x510-52GPX Switches ........................35
Figure 8: SFP Slot LEDs on the AT-x510-28GSX Switch.....................................................................................................36
Figure 9: SFP+ Slot LEDs ....................................................................................................................................................37
Figure 10: Switch ID LED .....................................................................................................................................................39
Figure 11: Switch ID LED .....................................................................................................................................................39
Figure 12: Switch ID LEDs in the Low Power Mode.............................................................................................................40
Figure 13: Stacking Transceivers .........................................................................................................................................48
Figure 14: Stack of Two Switches in the Linear Topology....................................................................................................50
Figure 15: Stack of Four Switches in the Linear Topology ...................................................................................................51
Figure 16: Stack of Two Switches in the Ring Topology ......................................................................................................52
Figure 17: Stack of Four Switches in the Ring Topology ......................................................................................................53
Figure 18: PORT Parameter in the Command Line Interface...............................................................................................56
Figure 19: Components of the x510 Series Switches...........................................................................................................65
Figure 20: Turning the Switch Upside Down ........................................................................................................................69
Figure 21: Removing the Rubber Feet .................................................................................................................................69
Figure 22: Attaching the Equipment Rack Brackets .............................................................................................................70
Figure 23: Attaching the Equipment Rack Brackets (Continued) .........................................................................................71
Figure 24: Mounting the Switch in an Equipment Rack ........................................................................................................71
Figure 25: Connecting the Management Cable to the Console Port ....................................................................................75
Figure 26: User Exec Mode Prompt ...............................................................................................
Figure 27: Moving to the Privileged Exec Mode with the ENABLE Command .....................................................................76
Figure 28: Moving to the Global Configuration Mode with the CONFIGURE TERMINAL Command ..................................76
Figure 29: Activating VCStack with the STACK ENABLE Command...................................................................................77
Figure 30: Returning to the Privileged Exec Mode with the EXIT Command .......................................................................77
Figure 31: Saving the Change with the WRITE Command ..................................................................................................77
Figure 32: Rebooting the Switch with the REBOOT Command ...........................................................................................77
Figure 33: Removing the Dust Plug from the S1 Slot ...........................................................................................................80
Figure 34: Removing the Dust Cover from the AT-StackXS/1.0 Transceiver.......................................................................81
Figure 35: Installing the AT-StackXS/1.0 Transceiver in Slot S1..........................................................................................82
Figure 36: Removing the Dust Plug from the S2 Slot ...........................................................................................................83
Figure 37: Installing the AT-StackXS/1.0 Transceiver in Slot S2..........................................................................................84
Figure 38: Handle on the AT-StackOP/0.3 and AT-StackOP/9.0 Transceivers....................................................................85
Figure 39: Installing the AT-StackOP/0.3 or AT-StackOP/9.0 Transceiver ..........................................................................86
Figure 40: Removing the Dust Cover from a Stacking Transceiver......................................................................................87
Figure 41: Positioning the Handle in the Upright Position ....................................................................................................87
Figure 42: Connecting the Fiber Optic Cable to the Stacking Transceiver...........................................................................88
Figure 43: Plugging in the AC Power Cords.........................................................................................................................91
Figure 44: SHOW STACK Command...................................................................................................................................95
Figure 45: Moving to the Global Configuration Mode with the CONFIGURE TERMINAL Command ..................................96
Figure 46: Returning to the Privileged Exec Mode ...............................................................................................................97
Figure 47: Saving the Priority Values with the WRITE Command........................................................................................97
Figure 48: Switch Initialization Messages.............................................................................................................................98
Figure 49: Switch Initialization Messages (Continued).........................................................................................................99
......................................76
7
Figures
Figure 50: Switch Initialization Messages (Continued) .......................................................................................................100
Figure 51: Removing the Dust Plug from an SFP Slot........................................................................................................105
Figure 52: Installing an SFP Transceiver............................................................................................................................106
Figure 53: Removing the Dust Cover from an SFP Transceiver.........................................................................................106
Figure 54: Positioning the SFP Handle in the Upright Position...........................................................................................107
Figure 55: Connecting a Fiber Optic Cable to an SFP Transceiver....................................................................................107
Figure 56: Removing the Dust Plug from an SFP+ Slot .....................................................................................................108
Figure 57: Installing an SFP or SFP+ Transceiver .............................................................................................................109
Figure 58: Removing the Dust Cover from an SFP or SFP+ Transceiver ..........................................................................109
Figure 59: Positioning the SFP or SFP+ Handle in the Upright Position ............................................................................110
Figure 60: Connecting a Fiber Optic Cable to an SFP or SFP+ Transceiver .....................................................................110
Figure 61: RJ-45 Socket Pin Layout (Front View)...............................................................................................................117
8

Tables

Table 1: Twisted Pair Cable for the 10/100/1000Base-T Ports ...........................................................................................24
Table 2: IEEE Powered Device Classes ..............................................................................................................................26
Table 3: Twisted Pair Cable Requirements for the 10/100Base-TX Ports at 10 or 100Mbps .............................................. 26
Table 4: Twisted Pair Cable Requirements for the 10/100/1000Base-T Ports at 1000Mbps ..............................................27
Table 5: LEDs on the 10/100/1000Base-T Ports on the AT-x510-28GTX and AT-x510-52GTX Switches ......................... 34
Table 6: LEDs on the 10/100/1000Base-T Ports on the AT-x510-28GPX and AT-x510-52GPX Switches ......................... 35
Table 7: SFP Slot LEDs on the AT-x510-28GSX Switch .....................................................................................................37
Table 8: SFP+ Slot LEDs .....................................................................................................................................................38
Table 9: Stacking Slot LEDs ................................................................................................................................................38
Table 10: Stacking Transceivers .........................................................................................................................................48
Table 11: Operating Distances of the AT-StackOP/0.3 Transceiver ...................................................................................64
Table 12: Product Dimensions ...........................................................................................................................................115
Table 13: Product Weights ................................................................................................................................................115
Table 14: Ventilation Requirements ...................................................................................................................................115
Table 15: Environmental Specifications .............................................................................................................................116
Table 16: Maximum Power Consumption ..........................................................................................................................116
Table 17: Input Voltages ....................................................................................................................................................116
Table 18: Product Certifications .........................................................................................................................................117
Table 19: Pin Signals for 10 and 100 Mbps .......................................................................................................................117
Table 20: Pin Signals for 1000 Mbps .................................................................................................................................118
Table 21: RJ-45 Style Serial Console Port Pin Signals .....................................................................................................119
Table 22: Fiber Optic Port Specifications for the AT-StackOP/0.3 Module .......................................................................120
Table 23: Fiber Optic Port Specifications for the AT-StackOP/9.0 Transceiver ..................................................
..............120
9
Tables
10

Preface

Note
This guide contains the installation instructions for the x510 Series of Layer 2+ and Basic Layer 3, Gigabit Ethernet switches. This preface contains the following sections:
“Document Conventions” on page 12
“Contacting Allied Telesis” on page 13
This guide explains how to install the switches in a stack configuration with Virtual Chassis Stacking (VCStack instructions on how to install the switches as stand-alone units, refer to the x510 Series Installation Guide for Stand-alone Switches.
™), For
11
Preface
Note
Caution
Warning

Document Conventions

This document uses the following conventions:
Notes provide additional information.
Cautions inform you that performing or omitting a specific action may result in equipment damage or loss of data.
Warnings inform you that performing or omitting a specific action may result in bodily injury.
12

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.
x510 Series Installation Guide for Virtual Chassis Stacking
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.
13
Preface
14

Chapter 1

Note

Overview

This chapter contains the following sections:
“Features” on page 16
“Front and Back Panels” on page 19
“Management Panel” on page 22
“10/100/1000Base-T Twisted Pair Ports” on page 23
“Power Over Ethernet” on page 25
“SFP+ Slots” on page 30
“Stacking SFP+ Slots” on page 31
“eco-friendly Button” on page 32
“LEDs” on page 33
“USB Port” on page 41
“Console Port” on page 42
“Power Supplies” on page 43
This guide explains how to install the switches in a stack configuration with Virtual Chassis Stacking (VCStack
™), For
instructions on how to install the switches as stand-alone units, refer to the x510 Series Installation Guide for Stand-alone Switches.
15
Chapter 1: Overview

Features

x510 Models Here are the x510 Series switches:

Here are the switches and their features:
AT-x510-28GTX
AT-x510-28GPX
AT-x510-28GSX
AT-x510-52GTX
AT-x510-52GPX
10/100/1000
Mbps Twisted
Pair Ports
Power Over
Ethernet
Here are the basic features of the 10/100/1000 Mbps twisted pair ports:
24 or 48 ports per switch
10Base-T, 100Base-TX, and 1000Base-T compliant
IEEE 802.3u Auto-Negotiation compliant
Auto-MDI/MDIX
100 meters (328 feet) maximum operating distance
IEEE 802.3x flow control in 10/100Base-TX full-duplex mode
IEEE 802.3x backpressure in 10/100Base-TX half-duplex mode
IEEE 802.3ab 1000Base-T
Jumbo frames up to 13KB
RJ-45 connectors
Here are the basic features of Power over Ethernet (PoE) on the twisted pair ports on the AT-x510-28GPX and AT-x510-52GPX Switches:
Supported on ports 1 to 24 on the AT-x510-28GPX Switch and
ports 1 to 48 on the AT-x510-52GPX Switch
Supports PoE (15.4 watts maximum) and PoE+ (30 watts
maximum) powered devices
16
Supports powered device classes 0 to 4
Maximum power budget of 370 watts
Port prioritization
Mode A wiring

SFP Slots Here are the basic features of the SFP slots on the AT-x510-28GSX

Switch:
Supports 100Base-FX and 1000Base-SX/LX SFP transceivers
x510 Series Installation Guide for Virtual Chassis Stacking
Note
Note
Note
Note
Supports single-port BiDi 1000Base-LX SFP transceivers
Supports 1000Base-ZX SFP transceivers
Supports 10/100/1000Base-T twisted pair transceivers
SFP transceivers must be purchased separately. For a list of supported transceivers, contact your Allied Telesis distributor or reseller.

SFP+ Slots Here are the basic features of the four SFP+ slots on the switches:

Supports 10Gbps, 10GBase-SR/LR fiber optic transceivers
Supports 10Gbps AT-SP10TW direct connect twinax cables with
SFP+ transceiver-style connectors
Supports 1000Base-SX/LX SFP transceivers
Supports single-port BiDi 1000Base-LX SFP transceivers
Supports 1000Base-ZX SFP transceivers
The SFP+ slots do not support 100Mbps 100Base-FX transceivers.
SFP and SFP+ transceivers must be purchased separately. For a list of supported transceivers, contact your Allied Telesis distributor or reseller.
SFP+ slots 27 and 28 on the AT-x510-28GTX and AT-x510-28GPX Switches and slots 51 and 52 on the AT-x510-52GTX and AT-x510­52GPX Switches are initially configured as stacking slots for the VCStack feature. If you intend to use the switch as a stand-alone unit, you must disable the VCStack feature before using the slots with standard SFP or SFP+ transceivers. The configuration instructions are provided in the x510 Series Installation Guide for Stand-alone Switches.

Stacking Slots Two of the SFP+ slots can be used to create a VCStack of up to four

switches. The slots support these stacking transceivers when the switch is in the stacking mode:
AT-StackXS/1.0 Twisted Pair Transceiver - 1 meter
AT-StackOP/0.3 Fiber Optic Transceiver - 300 meters
17
Chapter 1: Overview
AT-StackOP/9.0 Fiber Optic Transceiver - 9 kilometers

LEDs Here are the port LEDs:

Link/activity and duplex mode LEDs for the twisted pair ports on
non-PoE switches
Link/activity and PoE status LEDs for the twisted pair ports on PoE
switches
Link/activity LEDs for SFP and SFP+ slots
Stack ID number LED
eco-friendly button turns off the LEDs to conserve electricity
Installation
Options
MAC Address
Table
Management
Software and
Interfaces
Management
Methods
Here are the installation options for the switches:
19-inch equipment rack
Desk or tabletop
Here are the basic features of the MAC address tables of the switches:
Storage capacity of 16,000 dynamic MAC address entries
Storage capacity of 256 static MAC address entries
Automatic learning and aging
Here are the management software and interfaces:
AlliedWare Plus Management Software
Command line interface
Web browser interface
Here are the methods for managing the switches:
Local management through the Console port
18
Remote Telnet and Secure Shell management
Remote HTTP and HTTPS web browser management
SNMPv1, v2c, and v3

Front and Back Panels

AT-x510-28GPX
AT-x510-28GTX
10/100/1000Base-T Ports
SFP+ Slots
Management
Panel
SFP+ or
Stacking Slots
SFP+ Slots
Management
Panel
SFP+ or
Stacking Slots
10/100/1000Base-T Ports
with PoE
The front panels of the x510 Series switches are shown in Figure 1 and Figure 2 on page 20.
x510 Series Installation Guide for Virtual Chassis Stacking
Figure 1. Front Panels of the AT-x510-28GTX and AT-x510-28GPX
Switches
19
Chapter 1: Overview
AT-x510-52GPX
AT-x510-52GTX
SFP+ Slots
Management
Panel
SFP+ or
Stacking Slots
10/100/1000Base-T Ports
SFP+ Slots
Management
Panel
SFP+ or
Stacking Slots
10/100/1000Base-T Ports
with PoE
AT-x510-52GSX
SFP+ Slots
Management
Panel
SFP+ or
Stacking Slots
10/100/1000Base-T and 100/1000Base-FX
Transceiver Slots
20
Figure 2. Front Panels of the AT-x510-28GSX, AT-x510-52GTX, and AT-
x510-52GPX Switches
x510 Series Installation Guide for Virtual Chassis Stacking
AC Power
Connector
AC Power
Connector
(Power Supply 2)
(Power Supply 1)
AC Power
Connector
AC Power
Connector
(Power Supply 2)
(Power Supply 1)
Figure 3 shows the back panel of the AT-x510-28GTX, AT-x510-52GTX, and AT-x510-28GSX Switches.
Figure 3. Back Panel of the AT-x510-28GTX, AT-x510-52GTX, and AT-
x510-28GSX Switches
Figure 4 shows the back panel of the AT-x510-28GPX and AT-x510­52GPX Switches.
Figure 4. Back Panel of the AT-x510-28GPX and AT-x510-52GPX
Switches
21
Chapter 1: Overview
Console
eco-friendly
Button
Switch
Port
ID LED
Management
USB Port

Management Panel

Figure 5 identifies the components in the management panel on the x510 Series switches.
Figure 5. x510 Series Management Panel
22
x510 Series Installation Guide for Virtual Chassis Stacking
Note
Note

10/100/1000Base-T Twisted Pair Ports

The switches have 24 or 48 10/100/1000Base-T ports.

Speed The ports can operate at 10, 100, or 1000 Mbps. The speeds may be set

manually using the management software or automatically with Auto­Negotiation (IEEE 802.3u), the default setting.
The ports must be set to Auto-Negotiation to function at 1000 Mbps and are not compatible with devices that are not IEEE 802.3u compliant.

Duplex Mode The twisted pair ports can operate in either half- or full-duplex mode. The

duplex mode of a port, like port speed, may be set manually using the management software or automatically with Auto-Negotiation (IEEE
802.3u), the default setting.
Wiring
Configuration
The speed and duplex mode settings of a port may be set independently of each other. For example, a port may be configured such that its speed is set manually while its duplex mode is established through Auto­Negotiation.
A switch port should not use Auto-Negotiation to set its duplex mode if it is connected to a network device that does not support Auto­Negotiation for 10 or 100 Mbps operation and has a fixed duplex mode of full-duplex. Otherwise, a duplex-mode mismatch may occur in which a switch port and a network device operate at different duplex modes. The duplex modes of switch ports that are connected to network devices that do not support Auto-Negotiation should be set manually through the management software.
The wiring configuration of a port operating at 10 or 100 Mbps can be MDI or MDI-X. The wiring configurations of a switch port and a network device connected with straight-through twisted pair cabling have to be opposite, such that one device is using MDI and the other MDI-X. For instance, a switch port has to be set to MDI-X if it is connected to a network device set to MDI.
You may set the wiring configurations of the ports manually or let the switch configure them automatically with auto-MDI/MDI-X (IEEE 802.3ab­compliant). This feature enables the switch to automatically negotiate with network devices to establish their proper settings.
23
Chapter 1: Overview
Note
The MDI and MDI-X settings do not apply when ports are operating at 1000 Mbps.
Maximum
Distance
Cable
Requirements
The ports have a maximum operating distance of 100 meters (328 feet).
The cable requirements of the ports are given in Table 1.
Table 1. Twisted Pair Cable for the 10/100/1000Base-T Ports
Cable Type 10Mbps 100Mbps 1000Mbps
Standard TIA/EIA 568-B­compliant Category 3 shielded or unshielded cabling with 100 ohm impedance and a frequency of 16 MHz.
Standard TIA/EIA 568-A­compliant Category 5 or TIA/ EIA 568-B-compliant Enhanced Category 5 (Cat 5e) shielded or unshielded cabling with 100 ohm impedance and a frequency of 100 MHz.
Yes Yes No
Yes Yes Yes
Standard TIA/EIA 568-B­compliant Category 6 or 6a shielded cabling.
For the cable requirements for the ports on the AT-x510-28GPX and AT-x510-52GPX Switches for PoE devices, refer to Table 3 on page 26
Yes Yes Yes

Port Pinouts Refer to Table 19 on page 117 and Table 20 on page 118 for the port

pinouts of the 10/100/1000Base-T twisted pair ports.
24

Power Over Ethernet

The AT-x510-28GPX and AT-x510-52GPX Switches feature Power over Ethernet (PoE) on the 10/100/1000Base-T ports. PoE is used to supply power to network devices over the same twisted pair cables that carry the network traffic.
The main advantage of PoE is that it can make it easier to install a network. The selection of a location for a network device is often limited by whether there is a power source nearby. This often limits equipment placement or requires the added time and cost of having additional electrical sources installed. But with PoE, you can install PoE-compatible devices wherever they are needed without having to worry about whether there are power sources nearby.
A device that provides PoE to other network devices is referred to as power sourcing equipment (PSE). The AT-x510-28GPX and AT-x510­52GPX Switches act as PSE units by adding DC power to the network cable, thus functioning as a central power source for other network devices.
x510 Series Installation Guide for Virtual Chassis Stacking
Devices that receive their power from a PSE are called powered devices (PD). Examples include wireless access points, IP telephones, webcams, and even other Ethernet switches.
The switch automatically determines whether or not a device connected to a port is a powered device. Ports that are connected to network nodes that are not powered devices (that is, devices that receive their power from another power source) function as regular Ethernet ports, without PoE. The PoE feature remains activated on the ports but no power is delivered to the devices.

PoE Standards The AT-x510-28GPX and AT-x510-52GPX Switches support these PoE

standards:
PoE (IEEE 802.3af): This standard provides up to 15.4 watts at the
switch port to support powered devices that require up to 12.95 watts.
PoE+ (IEEE 802.3at): This standard provides up to 30.0 watts at the
switch port to support powered devices that require up to 25.5 watts.
Powered Device
Classes
Powered devices are grouped into the five classes listed in Table 2 on page 26. The classes are based on the amount of power the devices require. The switches support all five classes.
25
Chapter 1: Overview
Table 2. IEEE Powered Device Classes
Maximum Power
Class
0 15.4W 0.44W to 12.95W
1 4.0W 0.44W to 3.84W
2 7.0W 3.84W to 6.49W
3 15.4W 6.49W to 12.95W
4 30.0W 12.95W to 25.5W
Output from a Switch
Port
PD Power Range
Cable
Requirements
Table 3. Twisted Pair Cable Requirements for the 10/100Base-TX Ports at 10 or 100Mbps
Cable Type
Standard TIA/EIA 568-B­compliant Category 3 shielded or unshielded cabling with 100 ohm impedance and a frequency of 16 MHz.
Standard TIA/EIA 568-A­compliant Category 5 shielded or unshielded cabling with 100 ohm impedance and a frequency of 100 MHz.
Standard TIA/EIA 568-B­compliant Enhanced Category 5 (Cat 5e) shielded or unshielded cabling with 100 ohm impedance and a frequency of 100 MHz.
The cable requirements for ports operating at 10 or 100Mbps are given in Table 3.
10Mbps 100Mbps
Non-
PoE
Yes Yes No Yes Yes No
Yes Yes No Yes Yes No
Yes Yes Yes Yes Yes Yes
PoE PoE+
Non-
PoE
PoE PoE+
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Standard TIA/EIA 568-B­compliant Category 6 or 6a shielded cabling.
Yes Yes Yes Yes Yes Yes
x510 Series Installation Guide for Virtual Chassis Stacking
The cable requirements for ports operating at 1000Mbps are given in Table 4.
Table 4. Twisted Pair Cable Requirements for the 10/100/1000Base-T
Ports at 1000Mbps
1000Mbps
Cable Type
Standard TIA/EIA 568-B-compliant
Non-
PoE
PoE PoE+
No No No Category 3 shielded or unshielded cabling with 100 ohm impedance and a frequency of 16 MHz.
Standard TIA/EIA 568-A-compliant
Yes Yes No Category 5 shielded or unshielded cabling with 100 ohm impedance and a frequency of 100 MHz.
Standard TIA/EIA 568-B-compliant
Yes Yes Yes Enhanced Category 5 (Cat 5e) shielded or unshielded cabling with 100 ohm impedance and a frequency of 100 MHz.
Standard TIA/EIA 568-B-compliant
Yes Yes Yes Category 6 or 6a shielded cabling.

Power Budget The AT-x510-28GPX and AT-x510-52GPX Switches have a power budget

of 370 watts. This is the maximum amount of power the switches can provide at one time to the powered devices.
The AT-x510-28GPX and AT-x510-52GPX Switches have two power supplies. Each power supply is responsible for providing 185 watts, or half, of the power budget. Both power supplies must be connected to AC power sources for the switch to provide the full 370 watts. The power budget is reduced to 185 watts if only one power supply is connected to a power source.
The power requirements of the PoE devices determine the maximum number of devices the switch can support at one time. So long as the total power requirements of the powered devices is less than the power budget of the switch, the switch can supply power to all the devices. But if the total power requirements exceed the power budget, the switch denies power to one or more ports using a mechanism referred to as port prioritization.
To determine whether the power requirements of the PoE devices you plan to connect to the switch exceed its power budget, refer to their documentation for their power requirements and add the requirements together. The switch should be able to power all of the devices
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Chapter 1: Overview
simultaneously as long as the total is below its power budget. If the total exceeds the available power budget, you should consider reducing the number of PoE devices so that all of the devices receive power. Otherwise, the switch powers a subset of the devices, based on port prioritization.
The switch can handle different power requirements on different ports. This enables you to connect different classes of PoE equipment to the ports on the switch.
Port
Prioritization
If the power requirements of the powered devices exceed the switch’s power budget, the switch denies power to some ports based on a system called port prioritization. You may use this mechanism to ensure that powered devices critical to the operations of your network are given preferential treatment by the switch in the distribution of power should the demands of the devices exceed the available capacity.
There are three priority levels:
Critical
High
Low
Ports set to the Critical level, the highest priority level, are guaranteed power before any of the ports assigned to the other two priority levels. Ports assigned to the other priority levels receive power only if all the Critical ports are receiving power. Ports that are connected to your most critical powered devices should be assigned to this level. If there is not enough power to support all the ports set to the Critical priority level, power is provided to the ports based on port number, in ascending order.
The High level is the second highest level. Ports set to this level receive power only if all the ports set to the Critical level are already receiving power. If there is not enough power to support all of the ports set to the High priority level, power is provided to the ports based on port number, in ascending order.
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The lowest priority level is Low. This is the default setting. Ports set to this level only receive power if all of the ports assigned to the other two levels are already receiving power. As with the other levels, if there is not enough power to support all of the ports set to the Low priority level, power is provided to the ports based on port number, in ascending order.
Power allocation is dynamic. Ports supplying power to powered devices may cease power transmission if the switch’s power budget is at maximum usage and new powered devices, connected to ports with higher priorities, become active.
You can use port prioritization on dual power supply PoE switches to protect your important networking devices from loss of power should one
x510 Series Installation Guide for Virtual Chassis Stacking
of the power supplies fail or lose power. If you limit the power requirements of the critical devices connected to a switch to less than 185 watts, the PoE power provided by a single power supply, a switch will have sufficient power to support the critical devices even if it has only one functional power supply.
Wiring
Implementation
The IEEE 802.3af standard defines two methods for the delivery of DC power over twisted pair cable by a PSE, such as the switch, to PDs. These methods, known as modes A and B, identify the wires within the cable that carry the DC power from the PSE to a PD.
Twisted pair cabling typically consists of eight wires. With 10Base-T and 100Base-TX devices, the wires connected to pins 1, 2, 3, and 6 on the RJ­45 connectors carry the network traffic while the wires connected to pins 4, 5, 7, and 8 are unused. With 1000Base-T devices, all eight wires are used to carry network data.
It takes four wires to deliver DC power to a PD. With Mode A, the power is delivered on pins 1, 2, 3, and 6. These are the same pins in 10Base-T and 100Base-TX devices that carry the network data. With mode B, the power is provided over the spare wires.
The ports on the AT-x510-28GPX and AT-x510-52GPX Switches deliver the power using pins 1, 2, 3, and 6, which corresponds to mode A in the IEEE 802.3af standard. Powered devices that comply with the IEEE
802.3af standard are required to support both power delivery methods. Legacy devices that do not comply with the standard will work with the switch if they are powered on pins 1, 2, 3, and 6.
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Chapter 1: Overview
Note

SFP+ Slots

The switches have four SFP+ slots that support the following types of SFP 1000Mbps and SFP+ 10Gbps transceivers:
1000Base-SX/LX SFP transceivers
Single-port BiDi 1000Base-LX SFP transceivers
1000Base-ZX SFP transceivers
10Gbps, 10GBase-SR/LR fiber optic transceivers
10Gbps AT-SP10TW direct connect twinax cables with SFP+
transceiver-style connectors
You may use the transceivers to connect switches to other network devices over large distances, build high-speed backbone networks between network devices, or connect high-speed devices, such as servers, to your network.
The switches support a variety of short and long distance SFP and SFP+ modules. For a list of supported SFP modules, contact your Allied Telesis representative or visit our web site.
SFP+ slots 27 and 28 on the 28-port switches and slots 51 and 52 on the 52-port switches are initially configured as stacking slots for the VCStack feature. If you intend to use the switch as a stand-alone unit, you must disable the VCStack feature before you can use them with standard SFP or SFP+ transceivers. The configuration instructions are provided later in this guide, in “Powering On the Switches Simultaneously” on page 93.
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