Allied Telesis x310 User Manual

x310 Series

Fast Ethernet Switches

 AT-x310-26FT

 AT-x310-26FP

 AT-x310-50FT

 AT-x310-50FP

Installation Guide for VCStack

613-001964 Rev. A

™

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

)

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.

Preface ..............................................................................................................................................................................11

Document Conventions .......................................................................................................................................................12

Contacting Allied Telesis .....................................................................................................................................................13

Chapter 1: Overview ........................................................................................................................................................ 15

Features ..............................................................................................................................................................................16

x310 Models............................ .....................................................................................................................................16

10/100 Mbps Twisted Pair Ports ..................................................................................................................................16

10/100/1000 Mbps Twisted Pair Ports .........................................................................................................................16

Power Over Ethernet....................................................................................................................................................17

SFP Slots .....................................................................................................................................................................17

S1 and S2 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

10/100Base-TX Twisted Pair Ports......................................................................................................................................23

Speed...........................................................................................................................................................................23

Duplex Mode................................................................................................................................................................23

Wiring Configuration.....................................................................................................................................................23

Maximum Distance.......................................................................................................................................................24

Power Over Ethernet....................................................................................................................................................24

Cable Requirements.....................................................................................................................................................24

10/100/1000Base-T Twisted Pair Ports...............................................................................................................................25

Speed...........................................................................................................................................................................25

Duplex Mode................................................................................................................................................................25

Wiring Configuration.....................................................................................................................................................25

Maximum Distance...............................................................................................................

Power Over Ethernet....................................................................................................................................................25

Cable Requirements.....................................................................................................................................................25

Port Pinouts........................................... ..................................... ..................................................................................26

Power Over Ethernet...........................................................................................................................................................27

PoE Standards.............................................................................................................................................................27

Powered Device Classes .............................................................................................................................................28

Cable Requirements.....................................................................................................................................................28

Power Budget...............................................................................................................................................................28

Port Prioritization..........................................................................................................................................................29

Wiring Implementation..................................................................................................................................................30

SFP Slots.............................................................................................................................................................................31

Combo 10/100/1000Base-T Ports and SFP Slots ...............................................................................................................32

Stacking Slots......................................................................................................................................................................33

eco-friendly Button...............................................................................................................................................................34

LEDs....................................................................................................................................................................................35

LEDs for the 10/100Mbps Twisted Pair Ports...............................................................................................................35

LEDs for the PoE 10/100Mbps Twisted Pair Ports.......................................................................................................36

LEDs for the 10/100/1000Mbps Twisted Pair Ports......................................................................................................38

........................................25

Contents

LEDs for the SFP Slots................................................................................................................................................ 40

LEDs for the Stacking Slots......................................................................................................................................... 40

Switch ID LED ............................................................................................................................................................. 41

USB Port........................................... ................................................................... ... ............................................................ 43

Console Port....................................................................................................................................................................... 44

Power Supply...................................................................................................................................................................... 45

Chapter 2: Virtual Chassis Stacking ..............................................................................................................................47

Overview............................................................................................................................................................................. 48

Stacking Slots and Transceiver .......................................................................................................................................... 49

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

Selecting a Site for the Stack.............................................................................................................................................. 62

Planning a Stack............................................. .................................... ................................................................................64

Unpacking the Switch ......................................................................................................................................................... 65

Chapter 4: Installing the Switch on a Table or in an Equipment Rack .......................................................................69

Installing the Switch on a Table .......................................................................................................................................... 70

Installing the Switch in an Equipment Rack........................................................................................................................ 71

Chapter 5: Verifying the Status of VCStack ..................................................................................................................77

Verifying the Status of VCStack..........................................................................................................................................78

Activating the VCStack Feature.......................................................................................................................................... 79

Starting a Local Management Session........................................................................................................................79

Activating VCStack......................................................................................................................................................80

Chapter 6: Cabling the Stacking Ports ..........................................................................................................................83

Cabling Switches with AT-StackXS/1.0 Transceivers......................................................................................................... 84

Chapter 7: Powering On the Stack .................................................................................................................................89

Installing the Power Cord Retaining Clip .......................................................................................

Powering On the Switches Individually...............................................................................................................................91

Powering On the Switches Simultaneously ........................................................................................................................ 94

Verifying the Stack.............................................................................................................................................................. 96

Setting the Priority Numbers........................................................................................................................................97

Monitoring the Initialization Processes................................................................................................................................99

Chapter 8: Cabling the Networking Ports ....................................................................................................................103

Cabling the Twisted Pair Ports.......................................................................................................................................... 104

Installing SFP Transceivers..............................................................................................................................................106

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

..................................... 90

Figures

Figure 1: Front Panels of the AT-x310-26FT and AT-x310-26FP Switches.........................................................................19

Figure 2: Front Panels of the AT-x310-50FT and AT-x310-50FP Switches.........................................................................20

Figure 3: Back Panel of the AT-x310-26FT Switches...........................................................................................................21

Figure 4: Back Panel of the AT-x310-26FP and AT-x310-50FP Switches...........................................................................21

Figure 5: Back Panel of the AT-x310-50FT Switch...............................................................................................................21

Figure 6: x310 Series Management Panel...........................................................................................................................22

Figure 7: AT-StackXS/1.0 Stacking Transceiver..................................................................................................................33

Figure 8: LEDs for the 10/100Mbps Ports on the AT-x310-26FT and AT-x310-50FT Switches...........................................35

Figure 9: LEDs for the PoE 10/100Base-TX Ports on the AT-x310-26FP and AT-x310-50FP Switches.............................37

Figure 10: LEDs for the 10/100/1000Base-T Ports...............................................................................................................39

Figure 11: SFP Slot LEDs ....................................................................................................................................................40

Figure 12: Switch ID LED.....................................................................................................................................................41

Figure 13: Switch ID LED.....................................................................................................................................................42

Figure 14: Switch ID LEDs in the Low Power Mode.............................................................................................................42

Figure 15: AT-StackXS/1.0 Stacking Transceiver ................................................................................................................49

Figure 16: Stack of Two Switches in the Linear Topology....................................................................................................50

Figure 17: Stack of Four Switches in the Linear Topology...................................................................................................51

Figure 18: Stack of Two Switches in the Ring Topology ......................................................................................................52

Figure 19: Stack of Four Switches in the Ring Topology......................................................................................................53

Figure 20: PORT Parameter in the Command Line Interface...............................................................................................56

Figure 21: Components of the Switches...............................................................................................................................65

Figure 22: Components of the AT-x310-26FT Switch ..........................................................................................................66

Figure 23: Turning the Switch Upside Down........................................................................................................................71

Figure 24: Removing the Rubber Feet .................................................................................................................................71

Figure 25: Installing Brackets on the AT-x310-26FT Switch......................................................................

Figure 26: Attaching Brackets to the AT-x310-26FP, AT-x310-50FT, or AT-x310-50FP Switch ..........................................73

Figure 27: Attaching Brackets to the AT-x310-26FP, AT-x310-50FT, or AT-x310-50FP Switch (Continued)......................74

Figure 28: Mounting the Switch in an Equipment Rack. .......................................................................................................75

Figure 29: Connecting the Management Cable to the Console Port ...................................................... ..............................79

Figure 30: User Exec Mode Prompt.....................................................................................................................................80

Figure 31: Moving to the Privileged Exec Mode with the ENABLE Command......................... ... ... ......................................80

Figure 32: Moving to the Global Configuration Mode with the CONFIGURE TERMINAL Command ..................................80

Figure 33: Activating VCStack with the STACK ENABLE Command...................................................................................81

Figure 34: Returning to the Privileged Exec Mode with the EXIT Command ....................................................... ................81

Figure 35: Saving the Change with the WRITE Command ..................................................................................................81

Figure 36: Rebooting the Switch with the REBOOT Command ...........................................................................................81

Figure 37: Removing the Dust Plug from the S1 Slot...........................................................................................................84

Figure 38: Removing the Dust Cover from the AT-StackXS/1.0 Transceiver.......................................................................85

Figure 39: Installing the AT-StackXS/1.0 Transceiver in Slot S1..........................................................................................85

Figure 40: Removing the Dust Plug from the S2 Slot...........................................................................................................86

Figure 41: Installing the AT-StackXS/1.0 Transceiver in Slot S2..........................................................................................87

Figure 42: Installing the Retaining Clip.................................................................................................................................90

Figure 43: Plugging in the AC Power Cord...........................................................................................................................92

Figure 44: Lowering the Retaining Clip.................................................................................................................................93

Figure 45: SHOW STACK Command...................................................................................................................................96

Figure 46: Moving to the Global Configuration Mode with the CONFIGURE TERMINAL Command ..................................97

Figure 47: Returning to the Privileged Exec Mode...............................................................................................................98

Figure 48: Saving the Priority Values with the WRITE Command........................................................................................98

Figure 49: Switch Initialization Messages.............................................................................................................................99

...........................72

Figures

Figure 50: Switch Initialization Messages (Continued) .......................................................................................................100

Figure 51: Switch Initialization Messages (Continued) .......................................................................................................101

Figure 52: Removing the Dust Plug from an SFP Slot........................................................................................................107

Figure 53: Installing an SFP Transceiver............................................................................................................................107

Figure 54: Removing the Dust Cover from an SFP Transceiver.........................................................................................108

Figure 55: Positioning the SFP Handle in the Upright Position...........................................................................................108

Figure 56: Connecting a Fiber Optic Cable to an SFP Transceiver....................................................................................109

Figure 57: RJ-45 Socket Pin Layout (Front View)...............................................................................................................117

Tables

Table 1: Twisted Pair Cable Requirements for the 10/100Base-TX Ports ...........................................................................24

Table 2: Twisted Pair Cable for the 10/100/1000Base-T Ports ...........................................................................................26

Table 3: IEEE Powered Device Classes ..............................................................................................................................28

Table 4: Combo Port Pairs ..................................................................................................................................................32

Table 5: LEDs on the 10/100Base-TX Ports on the AT-x310-26FT and AT-x310-50FT Switches ......................................36

Table 6: LEDs for the PoE 10/100Base-TX Ports on the AT-x310-26FP and AT-x310-50FP Switches .............................37

Table 7: LEDs on the 10/100/1000Base-T Ports ................................................................................................................. 39

Table 8: SFP Slot LEDs .......................................................................................................................................................40

Table 9: S1 and S2 Slot LEDs .............................................................................................................................................41

Table 10: Product Dimensions ...........................................................................................................................................115

Table 11: Product Weights ................................................................................................................................................115

Table 12: Ventilation Requirements ................................................................................................................................... 115

Table 13: Environmental Specifications .............................................................................................................................116

Table 14: Input Voltages ....................................................................................................................................................116

Table 15: Maximum Power Consumption ..........................................................................................................................116

Table 16: Heat Dissipation ................................................................................................................................................117

Table 17: Product Certifications .........................................................................................................................................117

Table 18: Pin Signals for 10 and 100 Mbps .......................................................................................................................118

Table 19: Pin Signals for 1000 Mbps .................................................................................................................................118

Table 20: RJ-45 Style Serial Console Port Pin Signals .....................................................................................................119

Tables

Preface

Note

This guide contains the installation instructions for the x310 Series of Layer 2+ Fast 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 with the Virtual Chassis Stack (VCStack to install the switches as stand-alone units, refer to the x310 Series Installation Guide for Stand-alone Switches.

™) feature. For instructions on how

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.

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.

x310 Series Installation Guide for VCStack

 Documentation — View the most recent installation and user

guides, software release notes, white papers, and data sheets for your products.

 Software Downloads — Download the latest software releases for

your managed products.

For sales or corporate information, go to www.alliedtelesis.com/ purchase and select your region.

Preface

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  “10/100Base-TX Twisted Pair Ports” on page 23  “10/100/1000Base-T Twisted Pair Ports” on page 25  “Power Over Ethernet” on page 27  “SFP Slots” on page 31  “Combo 10/100/1000Base-T Ports and SFP Slots” on page 32  “Stacking Slots” on page 33  “eco-friendly Button” on page 34  “LEDs” on page 35  “USB Port” on page 43  “Console Port” on page 44  “Power Supply” on page 45

This guide explains how to install the switches in a stack with the Virtual Chassis Stack (VCStack

™) feature. For instructions on how

to install the switches as stand-alone units, refer to the x310 Series Installation Guide for Stand-alone Switches.

Chapter 1: Overview

Features

x310 Models Here are model names of the x310 Series switches:

The x310 Series Switches and their features are listed in this section:

 AT-x310-26FT  AT-x310-26FP  AT-x310-50FT  AT-x310-50FP

10/100 Mbps Twisted Pair

Ports

10/100/1000

Mbps Twisted

Pair Ports

Here are the basic features of the 10/100 Mbps twisted pair ports:

 24 or 48 ports per switch  10Base-T and 100Base-TX compliant  IEEE 802.3u Auto-Negotiation compliant  Auto-MDI/MDIX  100 meters (328 feet) maximum operating distance  IEEE 802.3x flow control in full-duplex mode  IEEE 802.3x backpressure in half-duplex mode  Jumbo frames up to 13KB  RJ-45 connectors

Here are the basic features of the 10/100/1000 Mbps twisted pair ports:

 2 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

x310 Series Installation Guide for VCStack

Note

The 10/100/1000Base-T ports are paired with the SFP slots to form combo ports. For information, refer to “Combo 10/100/1000Base-T Ports and SFP Slots” on page 32.

Power Over

Ethernet

Here are the basic features of Power over Ethernet (PoE) on the twisted pair ports on the AT-x310-26FP and AT-x310-50FP Switches:

 Supported on ports 1 to 24 on the AT-x310-26FP Switch and ports

1 to 48 on the AT-x310-50FP Switch

 Supports PoE (15.4 watts maximum) and PoE+ (30 watts

maximum) powered devices

 Supports powered device classes 0 to 4  Maximum power budget of 370 watts  Port prioritization  Mode A wiring

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

 Supports 1000Base-SX/LX SFP transceivers  Supports single-port BiDi 1000Base-LX SFP transceivers  Supports 1000Base-ZX SFP transceivers

SFP transceivers must be purchased separately. For a list of supported transceivers, contact your Allied Telesis distributor or reseller.

S1 and S2

Stacking Slots

The SFP slots are paired with the 10/100/1000Base-T ports to form combo port pairs. For information, refer to “Combo 10/100/ 1000Base-T Ports and SFP Slots” on page 32.

The S1 and S2 slots are stacking ports for the VCStack feature. You may use the slots to build a stack of up to four switches. The slots support the AT-StackXS/1.0 Twisted Pair Transceiver. For further information, refer to Chapter 2, “Virtual Chassis Stacking” on page 47.

Chapter 1: Overview

Note

LEDs Here are the port LEDs:

 Link/activity and duplex mode LEDs for the twisted pair ports on

non-PoE switches

 Link/activity and PoE status LEDs for the twisted pair ports on PoE

switches

 Link/activity LEDs for SFP and SFP+ slots  Switch ID number LED  eco-friendly button turns off the LEDs to conserve electricity

Installation

Options

MAC Address

Table

Management

Software and

Interfaces

Here are the installation options for the switches of a stack:

 19-inch equipment rack  Desk or tabletop

The switches come with wall anchors and screws. Allied Telesis does not recommend installing the switches of a stack on a wall. Instead, they should be installed in an equipment rack or on a table.

Here are the basic features of the MAC address tables of the switches:

 Storage capacity of 16,000 dynamic MAC address entries  Storage capacity of 256 static MAC address entries  Automatic learning and aging

Here are the management software and interfaces:

 AlliedWare Plus Management Software  Command line interface

Management

Methods

 Web browser interface

Here are the methods for managing the switches:

 Local management through the Console port  Remote Telnet and Secure Shell management  Remote HTTP and HTTPS web browser management  SNMPv1, v2c, and v3

Front and Back Panels

10/100Base-TX Ports

10/100/1000Base-T Ports

SFP Slots

Stacking Slots

Management Panel

AT-x310-26FT

10/100Base-TX Ports with PoE

10/100/1000Base-T Ports

SFP Slots

Stacking Slots

Management Panel

AT-x310-26FP

The front panels of the x310 Series switches are shown in Figure 1 here and Figure 2 on page 20.

x310 Series Installation Guide for VCStack

Figure 1. Front Panels of the AT-x310-26FT and AT-x310-26FP Switches

Chapter 1: Overview

10/100Base-TX Ports

10/100/1000Base-T Ports

SFP Slots

Stacking Slots

Management Panel

10/100Base-TX Ports with PoE

10/100/1000Base-T Ports

SFP Slots

Stacking Slots

Management Panel

AT-x310-50FP

AT-x310-50FT

Figure 2. Front Panels of the AT-x310-50FT and AT-x310-50FP Switches

x310 Series Installation Guide for VCStack

AC Power Connector

The back panel of the AT-x310-26FT Switch is shown in Figure 3.

Figure 3. Back Panel of the AT-x310-26FT Switches

The back panel of the AT-x310-26FP and AT-x310-50FP Switches is shown in Figure 4.

Figure 4. Back Panel of the AT-x310-26FP and AT-x310-50FP Switches

The back panel of the AT-x310-50FT Switch is shown in Figure 5.

Figure 5. Back Panel of the AT-x310-50FT Switch

Chapter 1: Overview

eco-friendly button

USB Port

Switch ID LED

Console Management Port

Management Panel

Figure 6 identifies the components in the management panels on the x310 Series switches.

Figure 6. x310 Series Management Panel

x310 Series Installation Guide for VCStack

Note

10/100Base-TX Twisted Pair Ports

The x310 Series switches have 24 or 48 10/100Base-TX ports, depending on the model.

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

manually using the management software or automatically with AutoNegotiation (IEEE 802.3u), the default setting.

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

duplex mode determines the manner in which a port transmits data. A port set to half-duplex can either transmit or receive data at one time, while a port operating in full-duplex can transmit and receive data at the same time. The best network performance is achieved with the full-duplex setting, but not all network equipment is designed to support that duplex mode.

The duplex modes, like port speeds, may be set manually using the management software or automatically with Auto-Negotiation (IEEE

802.3u), the default setting.

Wiring

Configuration

The switch allows you to set the speed and duplex mode settings of a port independently of each other. For example, you might set the speed manually and the duplex mode with Auto-Negotiation.

A switch port that is connected to a network device that does not support Auto-Negotiation and has a fixed duplex mode of full-duplex should not set its duplex mode with Auto-Negotiation. A duplexmode mismatch in which a switch port and a network device operate at different duplex modes, may occur. 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 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 negotiate with network devices to establish the proper settings, so that the ports on the devices are using different wiring configurations.

Chapter 1: Overview

Maximum

The ports have a maximum operating distance of 100 meters (328 feet).

Distance

Power Over

Ethernet

Cable

The 10/100Base-TX ports on the AT-x310-26FP and AT-x310-50FP Switches support Power over Ethernet (PoE). The ports supply DC power to network devices over the network twisted pair cables. The switches support PoE (IEEE 802.3af) and PoE+ (IEEE 802.3at). For background information, refer to “Power Over Ethernet” on page 27.

The cable requirements of the ports are given in Table 1.

Requirements

Table 1. Twisted Pair Cable Requirements for the 10/100Base-TX Ports

Cable Type

Standard TIA/EIA 568-Bcompliant Category 3 shielded or unshielded cabling with 100 ohm impedance and a frequency of 16 MHz.

10Mbps 100Mbps

Non-

PoE

Yes No No Yes No No

PoE PoE+

Non-

PoE

PoE PoE+

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.

Standard TIA/EIA 568-Bcompliant Category 6 or 6a shielded cabling.

Yes Yes No Yes Yes No

Yes Yes Yes Yes Yes Yes

10/100/1000Base-T Twisted Pair Ports

Note

The switches have two 10/100/1000Base-T ports.

The 10/100/1000Base-T ports are paired with the SFP slots to form combo ports. For information, refer to “Combo 10/100/1000Base-T Ports and SFP Slots” on page 32.

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.

x310 Series Installation Guide for VCStack

Duplex Mode The 10/100/1000Base-T ports twisted pair ports support full-duplex mode.

They do not support half-duplex mode.

Wiring

Configuration

Maximum

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.

The MDI and MDI-X settings do not apply when ports are operating at 1000 Mbps.

The ports have a maximum operating distance of 100 meters (328 feet).

Distance

Power Over

The 10/100/1000Base-T ports on the switches do not support PoE.

Ethernet

Cable

Requirements

The cable requirements of the ports are given in Table 2 on page 26.

Chapter 1: Overview

Table 2. Twisted Pair Cable for the 10/100/1000Base-T Ports

Cable Type 10Mbps 100Mbps 1000Mbps

Standard TIA/EIA 568-B-

Yes Yes No compliant Category 3 shielded or unshielded cabling with 100 ohm impedance and a frequency of 16 MHz.

Standard TIA/EIA 568-A-

Yes Yes Yes compliant 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.

Standard TIA/EIA 568-B-

Yes Yes Yes compliant Category 6 or 6a shielded cabling.

Port Pinouts Refer to Table 18 on page 118 and Table 19 on page 118 for the port

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

Power Over Ethernet

Note

The AT-x310-26FP and AT-x310-50FP Switches feature Power over Ethernet (PoE) on the 10/100Base-TX 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.

x310 Series Installation Guide for VCStack

PoE is not available on the two 10/10/10000Base-T ports.

A device that provides PoE to other network devices is referred to as power sourcing equipment (PSE). The AT-x310-26FP and AT-x310-50FP Switches act as PSE units by adding DC power to the network cable, thus functioning as a central power source for other network devices.

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-x310-26FP and AT-x310-50FP 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.

Chapter 1: Overview

Powered Device

Classes

Cable

Requirements

Powered devices are grouped into the five classes listed in Table 3 on page 28. The classes are based on the amount of power the devices require. The switches support all five classes.

Table 3. 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

The cable requirements for ports operating at 10 or 100Mbps are given in Table 1 on page 24.

Output from a Switch

Port

PD Power Range

Power Budget The AT-x310-26FP and AT-x310-50FP 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 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 p ower 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 the devices 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.

x310 Series Installation Guide for VCStack

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 numbe r, in ascending order.

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 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.

Chapter 1: Overview

Wiring

Implementation

The IEEE 802.3af standard defines two methods for delivering DC power over twisted pair cable by a PSE, such as a switch, to PDs. These methods, known as Alternatives A and B, identify which of the wires within the cables are to carry the DC power from the switches to the PDs.

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 Alternative 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 Alternative B, the power is provided over 4, 5, 7, and 8, which are spare wires.

The ports on the AT-x310-26FP and AT-x310-50FP Switches deliver the power using pins 4, 5, 7, and 8, which corresponds to Alternative B in the IEEE 802.3af standard. Therefore, the switches can support PDs that use Alternative B to receive power.

PDs that comply with the IEEE 802.3af and 802.3at standards are required to support both Alternative A and B. However, non-standard PDs and PDs that were manufactured before the completion of the IEEE

802.3af and 802.3at standards and that support only Alternative A will not work with the switches.

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