Allied Telesis AT-DC2552XS-L3 Service Manual

AT-DC2552XS/L3

ENTERPRISE CORE SWITCH

Installation Guide

613-002097 Rev. B

Copyright  2015 Allied Telesis, Inc. 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

Note

Standards

This section contains the following:

 “US Federal Communications Commission”

 “Industry Canada”

 “Emissions, Immunity and Electrical Safety Standards” on page 4

 “Translated Safety Statements” on page 4

US Federal Communications Commission

Radiated Energy

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.

Modifications or changes not expressly approved of by the manufacturer or the FCC, can void your right to operate this equipment.

Industry Canada

Radiated Energy

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.

Emissions, Immunity and Electrical Safety Standards

Warning

RFI Emissions FCC Class A, EN55022 Class A, CISPR 22 Class A, VCCI Class A, C-TICK

In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.  E84

EMC (Immunity) EN55024, EN61000-3-2, EN61000-3-3

Electrical Safety EN60950-1 (TUV), UL 60950-1 (

Laser Safety: EN60825-1  L7

CULUS

)

Translated Safety Statements

Important: The  indicates that a translation of the safety statement is available in a PDF document titled Translated Safety Statements on the Allied Telesis website at www.alliedtelesis.com/support.

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

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

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

AT-DC2552XS / L3 Features .......................................................................................................................................16

AT-DC2552XS/L3 Functions.................................................................................................................................16

System Capacity ...................................................................................................................................................16

AT-DC2552XS/L3 Physical Description ................................................................................................................19

LEDs.............................................................................................................................................................................24

SFP+ Slot LED ......................................................................................................................................................24

QSFP+ Slot LEDs .................................................................................................................................................25

Power/Fault LED ...................................................................................................................................................26

NET MGMT LED ...................................................................................................................................................27

FAN Status LEDs ..................................................................................................................................................28

AC Power LED ......................................................................................................................................................29

Console Port.................................................................................................................................................................30

AT-PWR06 Power Supply Module ...............................................................................................................................31

AT-FAN06 Fan Module ................................................................................................................................................33

Chapter 2: VCStack Overview ........................................................................................................................................ 35

VCStack Introduction....................................................................................................................................................36

Features of Virtual Chassis Stacking ....................................................................................................................36

VCStack Capable Switches ..................................................................................................................................36

The Physical Stack................................................................................................................................................37

Resilient Stacked Topology...................................................................................................................................38

Stack Formation ...........................................................................................................................................................42

The Role of the Stack Master................................................................................................................................42

Chapter 3: Beginning the Installation ............................................................................................................................ 45

Installation Overview ....................................................................................................................................................46

Reviewing Safety Precautions......................................................................................................................................47

Planning the Installation ...............................................................................................................................................52

Unpacking the Switch...................................................................................................................................................53

AT-DC2552XS/L3 Switch......................................................................................................................................53

AT-PWR06 Power Supply.....................................................................................................................................54

AT-FAN06 Fan Module .........................................................................................................................................55

Chapter 4: Installing the Switch and Modules .............................................................................................................. 57

Installing the Switch on a Desktop ...............................................................................................................................58

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

Installing and Replacing AT-PWR06 Power Supply Module ........................................................................................62

Installing Power Supply Module ............................................................................................................................62

Replacing Power Supply Module ..........................................................................................................................64

Installing Power Supply Blank Cover ....................................................................................................................65

Installing and Replacing AT-FAN06 Fan Module .........................................................................................................66

Installing Fan Module ............................................................................................................................................66

Replacing Fan Module ..........................................................................................................................................68

.............................59

Chapter 5: Installing the SFP+ and QSFP+ Transceivers and Cables ........................................................................ 69

Installing SFP+ Transceivers and Cables ....................................................................................................................70

General Guidelines ...............................................................................................................................................70

Installing SFP+ Transceiver ..................................................................................................................................71

Contents

Installing an SFP+ Direct Attach Cable ................................................................................................................ 73

Installing QSFP+ Transceivers and Cables ................................................................................................................. 75

Installing a QSFP+ Transceiver............................................................................................................................ 75

Installing a QSFP+ MTHTP Cable........................................................................................................................ 77

Chapter 6: Powering the Switch ..................................................................................................................................... 79

Powering On the Switch .............................................................................................................................................. 80

Turning Off the Switch ................................................................................................................................................. 82

Chapter 7: Managing the Switch .................................................................................................................................... 83

Local Management ...................................................................................................................................................... 84

Connecting the Console Port ............................................................................................................................... 84

Remote Network Management .................................................................................................................................... 86

NET MGMT Cable Installation.............................................................................................................................. 86

Chapter 8: Troubleshooting ............................................................................................................................................ 89

Appendix A: Technical Specifications ........................................................................................................................... 93

Physical Specifications ................................................................................................................................................ 93

Environmental Specifications....................................................................................................................................... 94

Power Specifications ................................................................................................................................................... 94

Certifications................................................................................................................................................................ 94

Console Port Pinouts................................................................................................................................................... 95

RJ-45 Twisted Pair Port Pinouts.................................................................................................................................. 96

Figures

Figure 1: AT-DC2552XS / L3 Front Panel ............................................................................................................................19

Figure 2: AT-DC2552XS / L3 Rear Panel View....................................................................................................................22

Figure 3: SFP+ Slot LEDs ....................................................................................................................................................24

Figure 4: QSFP+ LEDs.........................................................................................................................................................25

Figure 5: Power/Fault LED ...................................................................................................................................................26

Figure 6: NET MGMT LEDs..................................................................................................................................................27

Figure 7: FAN Status LEDs ..................................................................................................................................................28

Figure 8: AC Power LED ......................................................................................................................................................29

Figure 9: AT-PWR06 Power Supply Module ........................................................................................................................31

Figure 10: AT-FAN06 Fan Module........................................................................................................................................33

Figure 11: Stacking Ports .....................................................................................................................................................37

Figure 12: AT-DC2552XS / L3 Stacking Configuration Example..........................................................................................38

Figure 13: VCStack Resilient Stacked Topology Example ...................................................................................................39

Figure 14: Resiliency Link Connecting to Switch Ports Over the Resiliency Link VLAN......................................................40

Figure 15: Resiliency Link Connecting to Switch Ports Over the Resiliency Link VLAN Using a Network Hub ...................41

Figure 16: Stacking Ports .....................................................................................................................................................42

Figure 17: Contents of the AT-DC2552XS / L3 Shipping Box ..............................................................................................53

Figure 18: Contents of the AT-PWR06 Power Supply Module Shipping Box.......................................................................54

Figure 19: Contents of the AT-FAN06 Fan Module Shipping Box ........................................................................................55

Figure 20: Attaching the Rubber Feet ..................................................................................................................................58

Figure 21: Possible Bracket Locations .................................................................................................................................59

Figure 22: Attaching the Brackets to Switch.........................................................................................................................60

Figure 23: Mounting the Switch in an Equipment Rack ........................................................................................................61

Figure 24: Loosen Power Supply Captive Screws................................................................................................................62

Figure 25: Insert AT-PWR06 Module Into Chassis...............................................................................................................63

Figure 26: Tighten AT-PWR06 Captive Screws ...................................................................................................................64

Figure 27: Loosen Screws on Fan Blank Cover ...................................................................................................................66

Figure 28: Insert AT-FAN06 Module Into Chassis ................................................................................................................66

Figure 29: Tighten AT-FAN06 Captive Screws.....................................................................................................................67

Figure 30: Removing the Dust Plug from an SFP+ Slot .......................................................................................................71

Figure 31: Handle on SFP Transceiver ................................................................................................................................72

Figure 32: Installing an SFP+ Transceiver ......................................................................................

Figure 33: Removing SFP+ Dust Cover ...............................................................................................................................72

Figure 34: Attaching a Fiber Optic Cable to an SFP+ Transceiver.......................................................................................73

Figure 35: Removing the Dust Plug from an SFP+ Slot .......................................................................................................73

Figure 36: Installing an SFP+ Direct Attach Cable ...............................................................................................................74

Figure 37: Removing QSFP+ Slot Dust Cover .....................................................................................................................76

Figure 38: Installing a QSFP+ Transceiver...........................................................................................................................76

Figure 39: Removing QSFP+ Dust Cover ............................................................................................................................77

Figure 40: Attaching a Fiber Optic Cable to a QSFP+ Transceiver ......................................................................................77

Figure 41: Removing QSFP+ Slot Dust Cover .....................................................................................................................78

Figure 42: Installing a QSFP+ MTHTP Cable.......................................................................................................................78

Figure 43: Connecting the Management Cable to the Console Port ....................................................................................84

Figure 44: Connecting the Twisted Pair Cable into the NET MGMT port .............................................................................87

Figure 45: USB Console Connector and Port Pin Layout.....................................................................................................95

Figure 46: RJ-45 Connector and Port Pin Layout.................................................................................................................96

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

Figures

Table s

Table 1: Twisted Pair Cable Specifications for the NET MGMT Port ..................................................................................21

Table 2: SFP+ Slot LED ......................................................................................................................................................24

Table 3: QSFP+ LED ...........................................................................................................................................................25

Table 4: Power/Fault LED Description .................................................................................................................................26

Table 5: NET MGMT LED Descriptions ...............................................................................................................................27

Table 6: FAN Status LED Descriptions ................................................................................................................................28

Table 7: AC Power LED Description ....................................................................................................................................29

Table 8: Installation Procedures ..........................................................................................................................................46

Table 9: SFP+ Cables .........................................................................................................................................................71

Table 10: QSFP+ Cables .....................................................................................................................................................75

Table 11: Product Dimensions .............................................................................................................................................93

Table 12: Product Weights ..................................................................................................................................................93

Table 13: Environmental Specifications ...............................................................................................................................94

Table 14: AT-PWR06 Input Specifications ..........................................................................................................................94

Table 15: Product Certifications ...........................................................................................................................................94

Table 16: Console Pinouts ..................................................................................................................................................95

Table 17: Pin Signals for 10 and 100 Mbps .........................................................................................................................96

Table 18: Pin Signals - 1000 Mbps ......................................................................................................................................97

Tables

Preface

This guide contains instructions on how to install the AT-DC2552XS / L3 Enterprise Core Switch and the associated power supply and fan modules on a desktop or in a 19 inch equipment rack.

This preface contains the following sections:

 “Document Conventions” on page 12

 “Contacting Allied Telesis” on page 13

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.

AT-DC2552XS / L3 Enterprise Core Switch Installation Guide

 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

Overview

This chapter contains the following sections:

 “AT-DC2552XS / L3 Features” on page 16

 “LEDs” on page 24

 “Console Port” on page 30

 “AT-PWR06 Power Supply Module” on page 31

 “AT-FAN06 Fan Module” on page 33

Chapter 1: Overview

Note

AT-DC2552XS / L3 Features

The AT-DC2552XS / L3 Enterprise Core Switch has a high-density switching fabric (1280 Gbps) in a compact 1 RU chassis. The switch’s functions and physical description are described in the following sections:

AT-DC2552XS/

A list of the AT-DC2552XS / L3 switch’s functions is as follows:

L3 Functions

Ports

You will find the following network and management ports on the AT-DC2552XS / L3:

 48 SPF+ slots

 4 QSFP+ slots

 1 Console port (USB)

 1 NET MGMT port (RJ-45)

Refer to Table 16 on page 95 for the Console connector pinout functions.

System Capacity Here are the basic features of the AT-DC2552XS / L3 Enterprise Core

Switch:

 System Capacity

 2GB RAM size

 128MB flash memory

 9MB packet buffer

 128K MAC addresses

 4094 VLAN IDs (802.1Q)

 1K MAC-based VLAN

 512 ACL profiles with 256 ACL rules/profile

 8 QoS queues per port

 255 Layer 2 multicast groups

 Maximum jumbo frames 12k bytes

 32 Link Aggregation group (member 8)

 Port Mirroring

AT-DC2552XS / L3 Enterprise Core Switch Installation Guide

Note

Installation Options

The AT-DC2552XS / L3 Enterprise Core Switch is designed to be installed in one of two ways:

 On a desktop.

 In a 19-inch equipment rack.

Power Supply/Fan Modules

The AT-DC2552XS / L3 must have two fan modules and at least one power supply module installed. You may elect to install a second power supply module for redundancy. The power supply and fan modules are:

 AT-PWR06 power supply module

 AT-FAN06 fan module

The AT-DC2552XS / L3 must have two fan modules and at least one power supply module installed before you power the unit on. You may elect to install a second power supply module for redundancy.

The AT-PWR06 power supply module and AT-FAN06 fan module are sold separately from the AT-DC2552XS / L3 Enterprise Core Switch. Contact your local Allied Telesis representative for more information.

Optional SFP+ Transceivers

The following SFP+ transceivers and direct attach cable assemblies have been approved by Allied Telesis and may be installed in the AT-DC2552XS / L3 chassis:

The SFP+ transceivers and direct attach cable assemblies are sold separately from the AT-DC2552XS / L3 Enterprise Core Switch. Contact your local Allied Telesis representative for more information.

 AT-SP10SR (10GBASE-SR LC Ren (2))

 AT-SP10LR (10GBASE-LR LC Ren (2))

 AT-SP10TW1 (SFP + Direct Attach Cable (1m))

 AT-SP10TW3 (SFP + Direct Attach Cable (3m))

 AT-SP10TW7 (SFP + Direct Attach Cable (7m))

Chapter 1: Overview

Note

Optional QSFP+ Transceivers

The following QSFP+ transceivers direct attach cable assemblies have been approved by Allied Telesis and may be installed in the AT-DC2552XS / L3 chassis:

The QSFP+ transceivers and direct attach cable assemblies are sold separately from the AT-DC2552XS / L3 Enterprise Core Switch. Contact your local Allied Telesis representative for more information.

 AT-QSFPSR (40GBASE-SR4 (MPO))

 QSFP+ Direct Attach Cables

- AT-QSFP1CU (QSFP + Direct Attach Cable (1m))

- AT-QSFP3CU (QSFP + Direct Attach Cable (3m))

 Fiber-Optic Cable for AT-QSFPSR

- ET3-MPO12-1 (1m)

- ET3-MPO12-5 (5m)

Management Software and Interfaces

Here are the management software and the management interfaces:

 AlliedWare Plus Management Software

 Command line interface

 SNMP V1, V2 and V3

Refer to the AT-DC2552XS / L3 Management Software Command Line Interface User’s Guide for information concerning specific

commands.

Management Methods

Here are the methods for managing the switches:

 Local management through the Console port

 Telnet client on a network or NET MGMT port

 Secure Shell with telnet client on a network (SSH) port

 SNMPv1, v2c, and v3 on a network or NET MGMT port

AT-DC2552XS / L3 Enterprise Core Switch Installation Guide

Warning

NET MGMT Port LEDs

NET MGMT Port

4 QSFP+ Slots

QSFP+ Slot LEDs

Console Port

Power/Fault LED

48 SFP+ Slots

SFP+ Slot LEDs

Exhaust Air Vents

[Top of Chassis]

(Ports 1 - 48)

(Ports 49 - 64)

(ETH0)

AT-DC2552XS/

L3 Physical Description

The AT-DC2552XS / L3 Enterprise Core Switch physical description is as follows:

AT-DC2552XS / L3 Front Panel

The front panel of the AT-DC2552XS / L3 is shown in Figure 1.

Figure 1. AT-DC2552XS / L3 Front Panel

 Exhaust Air Vents - Air is forced through the chassis by the fan

modules and power supply modules and exits through the exhaust air vents on the top of the front panel.

Air vents must not be blocked and must have free access to the room ambient air for cooling.  E6

 SFP+ Slots - There are 48 SPF+ slots (ports 1 - 48) on the front

panel. Each port supports communication speeds up to 10Gbps. The switch supports a variety of 10G SFP+ transceivers and direct attach cables.

The AT-DC2552XS / L3 Enterprise Core Switch only supports SFP+ transceivers in this product. Refer to “Installing SFP+ Transceivers and Cables” on page 70 for installation instructions of the SFP+ transceivers.

Chapter 1: Overview

Note

Each SFP+ slot has a dust cover installed at the factory which should be left in place until an SFP+ transceiver is installed.

 SFP+ Slot LEDs - Each SFP+ slot has a corresponding LED which

displays the link and activity status of the port. See Figure 3 on page 24 for the location of these LEDs and Table 2 on page 24 for their functional description.

 QSFP+ Slots - There are four QSFP+ slots which support

communication speeds up to 40 GB. These slots are numbered 49, 53, 57 and 61. Each slot may be configured as one 40 GB port or 4 X 10GB ports in the management software. See Figure 4 on page 25 for the location of these LEDs and Table 3 on page 25 for their functional description. Refer to “Installing QSFP+ Transceivers and Cables” on page 75 for installation instructions.

Each QSFP+ slot has a dust cover installed at the factory which should be left in place until a QSFP+ transceiver is installed.

QSFP+ transceivers must be purchased separately. For more information about the list of supported QSFP+ transceivers, refer to “Optional SFP+ Transceivers” on page 17.

 QSFP+ Slot LEDs - Each QSFP+ slot has a corresponding QSFP+

LED which displays the link and activity status of the QSFP + slots. Refer to “QSFP+ Slot LEDs” on page 25 for the functional description.

 Power/Fault LED - The Status LED displays the overall status of

the chassis, power supply modules and fan modules. Refer to “Power/Fault LED” on page 26 for the functional description.

 Console Port - The console port is a standard RS-232 interface

using an USB interface. This port provides the capability to manage the configuration and firmware of the switch locally independent from the Ethernet network. Refer to “Connecting the Console Port” on page 84 for more information.

An RS-232 cable (female USB / D-Sub 9 pin) cable is included with the AT-DC2552XS / L3 shipping container.

AT-DC2552XS / L3 Enterprise Core Switch Installation Guide

 NET MGMT Port - This 10/100/1000BASE-T RJ-45 Ethernet port

provides the capability to manage the configuration and firmware of the switch. You can obtain or forward information via the command line interface (CLI) or SNMP interface. The port features auto MDI/ MDI-X and auto negotiation.

The cable requirements of the NET MGMT port are given in Table 1.

Table 1. Twisted Pair Cable Specifications for the NET MGMT Port

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.

 NET MGMT Port LEDs - These two LEDs display the speed, link

and activity status of the NET MGMT Port. Refer to “NET MGMT LED” on page 27 for more information.

Chapter 1: Overview

Warning

Note

PS 1 FAN 1 FAN 2 PS 2

Blank

Covers

Slot Slot Slot Slot

Fan 1

LED

Fan 2

LED

[Top of Chassis]

AT-DC2552XS / L3 Rear Panel

The rear panel of the AT-DC2552XS / L3 is shown in Figure 2.

Figure 2. AT-DC2552XS / L3 Rear Panel View

 Blank Covers - When the switch is shipped from the factory, four

blank covers are installed.

- Two blank covers for the power supply slots (PS 1/PS 2)

- Two blank covers for the two fan module slots (FAN 1/FAN 2)

To insure proper cooling and air flow within the chassis, the blank covers should not be removed unless the modules are installed in their place.  E76

 The power unit slots (PS 1/PS 2) are for the installation of the AT-

PWR06 power supply module. These slots are located on the far right and far left sides of the chassis.

 A second AT-PWR06 power supply module may be installed for

redundancy, but is not required for normal operation of the switch.

 With a redundant power supply configuration, you can replace one

of the two power supply modules without turning off the primary power supply. Each AT-PWR06 power supply module that is installed in the chassis is hot-swappable. Refer to “Installing and Replacing AT-PWR06 Power Supply Module” on page 62 for the installation procedure.

The AT-PWR06 power supply module is sold and packaged separately from the AT-DC2552XS / L3 Enterprise Core Switch.

AT-DC2552XS / L3 Enterprise Core Switch Installation Guide

Note

 The fan module slots (FAN 1/FAN 2) are for the installation of the

AT-FAN06 fan module. These slots are located on the center right and center left of the chassis.

 Two AT-FAN06 fan modules are required in the chassis for normal

operation of the switch. Refer to “Installing and Replacing ATFAN06 Fan Module” on page 66 for the installation procedure.

The AT-FAN06 fan module is sold and packaged separately from the AT-DC2552XS / L3 Enterprise Core Switch.

 Fan LEDs - The fan LEDs FAN 1 (upper LED) / FAN 2 (lower LED)

display the status of the fan modules. They are located in the center of the chassis between the fan module slots. Refer to Table 6 on page 28 for the functional description of these LEDs.

Chapter 1: Overview

LED Upper

L/A LED Lower SFP+ Slot

Upper SFP+ Slot

LEDs

Here are the descriptions of the switch’s LEDs.

SFP+ Slot LED Each SFP+ slot has one Link/Activity LED. The LED is triangular in shape.

The triangle LED pointing up shows the status of the upper SFP+ slot while the triangle LED pointing down shows the status of the lower SFP+ slot. These SFP+ slot LEDs are shown in Figure 3.

Figure 3. SFP+ Slot LEDs

The SFP+ slot LEDs are described in Table 2.

Table 2. SFP+ Slot LED

LED State Description

Solid green The SFP+ transceiver has established a

link to a network device.

Link/Activity

Flashing

green

Off

The SFP+ transceiver is receiving or transmitting packets to a network device.

The SFP+ slot is empty or the SFP+ transceiver has not established a link to a network device.

AT-DC2552XS / L3 Enterprise Core Switch Installation Guide

QSFP+ LEDs

QSFP+ Slot LEDs Each QSFP+ port has one link/activity LED labeled LINK/ACT. These

LEDs are shown in Figure 4.

Figure 4. QSFP+ LEDs

The QSFP+ LED is described in Table 3.

Table 3. QSFP+ LED

LED State Description

Solid green The QSFP+ transceiver has established a

link to a network device.

Link/Activity

Flashing

green

The QSFP+ transceiver is receiving or transmitting packets to a network device.

The QSFP+ slot is empty or the QSFP+

Off

transceiver has not established a link to a network device.

Chapter 1: Overview

Power/Fault LED The Power/Fault LED is shown in Figure 5.

Figure 5. Power/Fault LED

The Power/Fault LED is described in Table 4.

Table 4. Power/Fault LED Description

Location LED State Description

Front Panel

POWER /FAULT

Solid green Power is being supplied and the chassis is

operating normally.

Flashing

System is booting up.

green

Solid yellow Failure of one or more power supply fans.

Flashing

Only one PSU is powered up.

yellow

Off No power.

AT-DC2552XS / L3 Enterprise Core Switch Installation Guide

LINK LED

ACT LED

NET MGMT

The NET MGMT LEDs are shown in Figure 6.

LED

Figure 6. NET MGMT LEDs

The NET MGMT LEDs are described in Table 5.

Table 5. NET MGMT LED Descriptions

Location LED State Description

The NET MGMT port has established a link to

Front

Panel

ACT

(Right LED)

Solid green

Flashing green

Off The NET MGMT port established a link to a

a network device, but no packets are being transmitted or received.

The NET MGMT port is receiving or transmitting packets to a network device.

network device.

LINK

(Left LED)

Solid green A valid 1G link is established on the port.

Solid yellow A valid 10/100M link is established on the port.

Off No link is established on the port.

Chapter 1: Overview

FAN Status LEDs The fan status LEDs are shown in Figure 7.

Figure 7. FAN Status LEDs

The fan status LEDs are described in Table 6.

Table 6. FAN Status LED Descriptions

Location LED State Description

Rear Panel

FAN1

(top LED)

FAN2

(bottom LED)

Solid Green Fan operating normally.

Solid Red Fan is in failure mode.

Off No power is supplied to the fan module.

Solid Green Fan operating normally.

Solid Red Fan is in failure mode.

Off No power is supplied to the fan module.

AT-DC2552XS / L3 Enterprise Core Switch Installation Guide

AC Power LED Each AT-PWR06 power supply module has an AC power (AC OK) LED.

This LED is shown in Figure 8.

Figure 8. AC Power LED

The AC Power LED is described in Table 7.

Table 7. AC Power LED Description

Location LED State Description

Power Supply Module Panel AC OK

Solid Green AC power is supplied to power supply.

Off No AC power is supplied to power supply.

Chapter 1: Overview

Note

Console Port

The Console port is a USB connector located on the front panel. See Figure 1 on page 19 for its location. It is used to locally configure the features and parameter settings of the switch. This type of management uses the RS-232 serial communications protocol. It is commonly referred to as local or out-of-band management because it is not connected over an Ethernet network. To perform local management, you must be at the location of the switch and must use the management cable included with the switch.

Refer to “Console Port Pinouts” on page 95 for USB pin orientation and the signal functions assigned to each pin.

To establish a local management session with the switch, connect a terminal or a personal computer with a terminal emulation program to the Console port using the management cable provided with the switch. This cable has a USB connector on one end and a DB-9 (D-sub 9-pin) connector on the other.

The Console port is configured at the factory to the following specifications:

 Default baud rate: 9600 bps (Range is 9600 to 115200 bps)

 Data bits: 8

 Parity: None

 Stop bits: 1

 Flow control: None

These settings are for a DEC VT100 or ANSI terminal, or an equivalent terminal emulation program.

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