Edge-Core ECS4620-28T, ECS4620-28F-DC, ECS4620-28T-DC, ECS4620-52T, ECS4620-52P Installation Manual

ECS4620 Series
28/52-Port Layer 3
Stackable GE Switch

Installation Guide

www.edge-core.com

Installation Guide

ECS4620-28T Stackable GE Switch
ECS4620-28T-DC Stackable GE Switch

Layer 3 Stackable Gigabit Ethernet Switch,
with 24 10/100/1000BASE-T (RJ-45) Ports,
2 10-Gigabit SFP+ Ports,
and 1 10-Gigabit SFP+ Extender Module Slot

ECS4620-28P Stackable GE PoE Switch

Layer 3 Stackable Gigabit Ethernet Switch,
with 24 10/100/1000BASE-T (RJ-45) PoE Ports,
2 10-Gigabit SFP+ Ports,
and 1 10-Gigabit SFP+ Extender Module Slot

ECS4620-28F Stackable GE Switch
ECS4620-28F-DC Stackable GE Switch

Layer 3 Gigabit Ethernet Switch,
with 22 100/1000BASE-X SFP Slots,
2 Combination Gigabit (RJ-45/SFP) Ports,
2 10-Gigabit SFP+ Ports,
and 1 10-Gigabit SFP+ Extender Module Slot

ECS4620-52T Stackable GE Switch

Layer 3 Gigabit Ethernet Switch,
with 48 10/100/1000BASE-T (RJ-45) Ports,
2 10-Gigabit SFP+ Ports,
and 1 10-Gigabit SFP+ Extender Module Slot

ECS4620-52P Stackable GE PoE Switch

Layer 3 Gigabit Ethernet Switch,
with 48 10/100/1000BASE-T (RJ-45) PoE Ports,
2 10-Gigabit SFP+ Ports,
and 1 10-Gigabit SFP+ Extender Module Slot

E112016-AP-R05

150200000918A R05

How to Use This Guide

This guide includes detailed information on the switch hardware, including
network ports, power, cabling requirements, as well as plug-in modules and
transceivers. This guide also provides general installation guidelines and
recommended procedures. To deploy this switch effectively and ensure trouble­free operation it is recommended to first read the relevant sections in this guide so
that you are familiar with all its hardware components.

Who Should Read This

Guide?

How This Guide is

Organized

This guide is for network administrators and support personnel that install, operate,
and maintain network equipment. The guide assumes a basic working knowledge
of LANs (Local Area Networks) and can be read by either those that are new to
network equipment, or those with more experience.

The organization of this guide is based on the switch’s main hardware components.
Each chapter includes information about a specific component with relevant
specifications and installation procedures. A switch overview section is also
provided.

For Users New to Switches

recommended that you first read all chapters in this guide before installing the
switch.

For Experienced Users

network switches, the Switch Description and Installation Overview chapters
provide you with enough information to install the switch. Other chapters can be
left for reference, when needed.

The guide includes these chapters:

◆ Chapter 1 - Switch Description — Includes a switch overview, key component

identification and key technical specifications.

— If you are new to network switches, it is

— If you are already familiar with installing and operating

◆ Chapter 2 - Installation Overview — Includes details of the package contents

and an outline of switch installation tasks.

◆ Chapter 3 - Switch Chassis — Includes switch chassis rack installaion, and

system cooling requirements.

◆ Chapter 4 - Power and Grounding — Includes information on AC power

requirements, switch grounding, and powering on the switch.

– 3 –

How to Use This Guide

◆ Chapter 5 - Port Connections — Includes information on network interfaces,

installing optional transceivers, and cabling specifications.

◆ Chapter 6 - Switch Management — Connecting to the switch for management,

and information on the system status LEDs.

◆ Appendix A - Troubleshooting — Information for troubleshooting switch

installation and operation.

Related

Documentation

This guide focuses on switch hardware and installation, it does not cover software
configuration of the switch. For specific information on how to operate and use the
management functions of the switch, see the following guides:

Web Management Guide
CLI Reference Guide

For all safety information and regulatory statements, see the following documents:

Quick Start Guide
Safety and Regulatory Information

Conventions The following conventions are used throughout this guide to show information:

Note:

Emphasizes important information or calls your attention to related features

or instructions.

Caution:

the system or equipment.

Alerts you to a potential hazard that could cause loss of data, or damage

Warning:

Alerts you to a potential hazard that could cause personal injury.

Revision History This section summarizes the changes in each revision of this guide.

November 2016 Revision

This is the fifth revision of this guide. It includes the following change:

◆ Updated stack backplane connection information.

– 4 –

How to Use This Guide

May 2016 Revision

This is the fourth revision of this guide. It includes the following change:

◆ Updated switch cooling requirements information.

March 2015 Revision

This is the third revision of this guide. It includes the following change:

◆ Combined ECS4620 Series switch models information.

November 2014 Revision

This is the second revision of this guide. It includes the following change:

◆ Added ECS4620-28F-DC switch information.

May 2014 Revision

This is the first revision of this guide.

– 5 –

Contents

How to Use This Guide 3

Contents 6

Figures 8

Tables 10

1 Switch Description 11

Overview 11

Power-over-Ethernet 11

Key Hardware Components 12

Key Technical Specifications 15

2 Installation Overview 17

Package Contents 17

Switch Installation Tasks 18

3 Switch Chassis 23

General Installation Guidelines 23

Switch Cooling Requirements 24

Rack Cooling 25

How to Install the Switch in a Rack 25

Rack-Mounting Items 26

Rack-Mount Procedure 26

How to Install the Switch on a Shelf or Desktop 28

Optional Media Expansion Module 29

How to Install an Optional Media Expansion Module 29

4 Power and Grounding 31

AC Power Supply 31

DC Power Supply 32

Optional Redundant Power Supply 33

– 6 –

Contents

Grounding the Chassis 33

How to Connect to AC Power 34

How to Connect to DC Power 35

5 Port Connections 38

Cable Labeling and Connection Records 39

Understanding the Port Status LEDs 40

How to Install an SFP/SFP+ Transceiver 40

How to Connect to Twisted-Pair Copper Ports 42

Copper Cabling Guidelines 42

10/100BASE-TX Pin Assignments 42

1000BASE-T Assignments 43

Power-over-Ethernet 44

Connection Procedure 45

How to Connect to SFP/SFP+ Fiber Optic Ports 46

Connection Procedure 47

Making 10 Gbps DAC Connections 48

Connecting Switches in a Stack 48

6 Switch Management 50

Understanding the System Status LEDs 51

How to Connect to the Console Port 52

A Troubleshooting 55

Diagnosing LED Indicators 55

System Self-Diagnostic Test Failure 55

Power and Cooling Problems 56

Installation 56

In-Band Access 56

Index 57

– 7 –

Figures

Figure 1: Switch Front Panels 12

Figure 2: Rear Panel 14

Figure 3: Installing the Switch in a Rack 18

Figure 4: Connecting AC Power 19

Figure 5: Connecting DC Power 19

Figure 6: System LEDs 20

Figure 7: Console Port 21

Figure 8: Making a Connection to an RJ-45 Port 22

Figure 9: Switch Cooling 24

Figure 10: Switch Cooling (ECS4620-28T/ECS4620-28T-DC) 25

Figure 11: Attaching the Brackets 27

Figure 12: Installing the Switch in a Rack 27

Figure 13: Attaching the Adhesive Feet 28

Figure 14: Dual-Port 10G SFP+ Module 29

Figure 15: Installing an Optional Module 30

Figure 16: AC Power Supply Socket 31

Figure 17: DC Terminal 32

Figure 18: Redundant Power Supply Connector 33

Figure 19: Grounding Terminal 33

Figure 20: AC Power Cord and Power Socket 34

Figure 21: DC Plug Connections 36

Figure 22: Port Status LEDs 40

Figure 23: Inserting an SFP/SFP+ Transceiver into a Slot 41

Figure 24: RJ-45 Connector 43

Figure 25: Making Twisted-Pair Connections 45

Figure 26: Making a Connection to an SFP+ Port 47

Figure 27: Making Stack Connections 49

Figure 28: System Status LEDs 51

Figure 29: Console Port 52

– 8 –

Figures

Figure 30: Console Port Connection 53

– 9 –

Tables

Table 1: Key Technical Specifications 15

Table 2: AC Power Supply Specifications 32

Table 3: DC Power Supply Specifications 32

Table 4: RPS Specifications 33

Table 5: Port Status LEDs 40

Table 6: Maximum Twisted-Pair Copper Cable Lengths 42

Table 7: 10/100BASE-TX MDI and MDI-X Port Pinouts 43

Table 8: 1000BASE-T MDI and MDI-X Port Pinouts 43

Table 9: Maximum 10 Gigabit Ethernet Fiber Cable Lengths 46

Table 10: Maximum Gigabit Ethernet Fiber Cable Lengths 46

Table 11: System Status LEDs 51

Table 12: Console Cable Wiring 52

Table 13: Troubleshooting Chart 55

– 10 –

1 Switch Description

This chapter includes these sections:

◆ “Overview” on page 11

◆ “Key Technical Specifications” on page 15

Overview

The ECS4620-28T, ECS4620-28T-DC, ECS4620-28P, ECS4620-52T, and ECS4620-52P
are Gigabit Ethernet Layer 3 stackable switches with 24/48 10/100/1000BASE-T
ports, two 10-Gigabit (10G) Small Form Factor Pluggable Plus (SFP+) transceiver
slots. The ECS4620-28F and ECS4620-28F-DC are Layer 3 switches that provid 22
SFP 1G transceiver slots, two combination Gigabit RJ-45/SFP ports, and two 10G
SFP+ slots. The ECS4620-28P and ECS4620-52P front-panel ports also support
Power-over-Ethernet Plus (PoE+).

All switches also provide one rear-panel slot for a dual-port 10G hot-swappable
expansion module.

The switches include an SNMP-based management agent, which provides both in­band and out-of-band access for managing the switch. Further, the switches
support both web and CLI-based configuration.

These switches include built-in stacking ports that enable units to be connected
together through a 40 Gbps stack backplane. The switch stack can be managed
from a master unit using a single IP address.

Power-over-Ethernet All of the 10/100/1000 Mbps ports on the ECS4620-28P and ECS4620-52P support

the IEEE 802.3at Power-over-Ethernet Plus (PoE+) standard that enables DC power
to be supplied to attached devices using wires in the connecting Ethernet cable.

– 11 –

Chapter 1

8

7

1

2

3

6

5

4

9

ECS4620-28T-DC

ECS4620-28P

ECS4620-28F-DC

ECS4620-52T

ECS4620-28T

ECS4620-28F

ECS4620-52P

10

162

7

38495

10

| Switch Description

Overview

Figure 1: Switch Front Panels

Key Hardware

Components

This manual describes each specific component, or related components, together
with their installation requirements and procedures in each chapter. To understand
each component in detail, refer to the relevant section.

System LEDs 100/1000BASE-X SFP Slots

1000BASE-T RJ-45 Port LEDs 1000BASE-T RJ-45 Ports

10G SFP+ Port LEDs Expansion Module Port LEDs

Combination Gigabit RJ-45/SFP Ports RJ-45 Console Port

10G SFP+ Slots / Stacking Ports USB Port

– 12 –

Chapter 1

| Switch Description

Overview

10/100/1000BASE-T RJ-45 Ports

The switch contains 24/48 RJ-45 ports that support 10/100/1000BASE-T copper
links to other devices. The ports on the ECS4620-28P and ECS4620-52P also
support PoE+ connections. For more information, see “How to Connect to Twisted-

Pair Copper Ports” on page 42.

10G SFP+ Slots / Stacking Ports

The switch contains two 10G SFP+ transceiver slots that operate at 10 Gbps full
duplex. For more information, see “How to Connect to SFP/SFP+ Fiber Optic Ports”

on page 46.

The SFP+ ports can also be used as stacking ports, providing a 40 Gbps stack
backplane connections between switches. For more information, see “Connecting

Switches in a Stack” on page 48.

Combination Gigabit RJ-45/SFP Ports

The ECS4620-28F switch contains two Gigabit combination ports. You can connect
to either an RJ-45 port or an SFP transceiver (purchased separately).

◆

SFP Slots

duplex. For more information, see “How to Connect to SFP/SFP+ Fiber Optic

Ports” on page 46.

◆

1000BASE-T RJ-45 Ports

copper links to other devices. For more information, see “How to Connect to

Twisted-Pair Copper Ports” on page 42.

— The SFP transceiver slots operate at 100 Mbps or 1 Gbps full

— The RJ-45 ports support 10/100/1000BASE-T

100/1000BASE-X SFP Slots

The ECS4620-28F switch contains 22 1G SFP transceiver slots that operate at
100 Mbps or 1Gbps full duplex. For more information, see “How to Connect to SFP/

SFP+ Fiber Optic Ports” on page 46.

System LEDs

For information on system status LED indicators, see “Understanding the System

Status LEDs” on page 51.

Port LEDs

For information on port status LED indicators, see “Understanding the Port Status

LEDs” on page 40.

USB Port

Reserved for future use.

– 13 –

Figure 2: Rear Panel

2

1

3

DC Models

AC Models

4

5

14253

Chapter 1

| Switch Description

Overview

Console Port

The RJ-45 connector on the front panel labeled “Console” provides an out-of-band
serial connection to a terminal or a PC running terminal emulation software. The
port can be used for performing switch monitoring and configuration. For more
information, see “How to Connect to the Console Port” on page 52.

Grounding Terminal Expansion Module Slot

RPS Connector DC Power Socket

AC Power Socket

Grounding Terminal

The switch includes a grounding terminal that must be connected to a ground
source that provides local earth potential. For more information, see “Grounding

the Chassis” on page 33.

RPS Connector

The switch supports an optional Redundant Power Supply (RPS), that can supply
power to the switch in the event the internal power supply fails. For more
information, see “DC Power Supply” on page 32.

Expansion Module Slot

The switch includes one slot on the rear panel for a hot-swappable dual-port
10GBASE module. For more information, see “Optional Media Expansion Module”

on page 29.

AC Power Socket

The switch requires a 100-240 VAC, 50-60 Hz AC power source. For more
information on the switch power input, how to connect it, and how to power-on
the switch, see “How to Connect to AC Power” on page 34.

– 14 –

DC Power Socket

The switch requires a 36 to 75 VDC, 3.82 A power source. For more information on
the switch power input, how to connect it, and how to power-on the switch, see

“How to Connect to DC Power” on page 35.

Key Technical Specifications

The following table contains key system specifications for the switch.

Table 1: Key Technical Specifications

Item Specification

Ports ECS4620-28T/T-DC/P: 24 1000BASE-T RJ-45 ports with Auto-negotiation

Chapter 1

| Switch Description

Key Technical Specifications

ECS4620-52T/P: 48 1000BASE-T RJ-45 ports with Auto-negotiation
ECS4620-28F/F-DC: 22 100/1000BASE-X SFP slots
ECS4620-28F/F-DC: 2 Combination 1G RJ-45/SFP ports
2 10G SFP+ transceiver slots (for uplink or stacking)
1 expansion module slot (supporting dual-port 10G SFP+ module)

Network Interface ECS4620-28T/T-DC/P:

Ports 1~24: RJ-45 connector, auto MDI/X
Ports 25~26: 10G SFP+ transceivers
Ports 27~28: Dual-port module supporting 10G SFP+ transceivers
ECS4620-52T/P:
Ports 1~48: RJ-45 connector, auto MDI/X
Ports 49~50: 10G SFP+ transceivers
Ports 51~52: Dual-port module supporting 10G SFP+ transceivers
ECS4620-28F/F-DC:
Ports 1~22: 1G SFP transceivers
Ports 23~24: RJ-45 connector, auto MDI/X or 1G SFP transceivers
Ports 25~26: 10G SFP+ transceivers
Ports 27~28: Dual-port module supporting 10G SFP+ transceivers

Buffer Architecture 1.5 Mbytes

Aggregate Bandwidth ECS4620-28T/T-DC/P/F/F-DC: 128 Gbps

ECS4620-52T/P: 176 Gbps

Switching Database 16K MAC address entries

1024 static MAC addresses
32 IP interfaces
1023 multicast groups

AC Input Power ECS4620-28T: 100 to 240 V, 50-60 Hz, 1.5 A

ECS4620-28P: 100 to 240 V, 50-60 Hz, 10 A
ECS4620-28F: 100 to 240 V, 50-60 Hz, 2 A
ECS4620-52T: 100 to 240 V, 50-60 Hz, 2 A
ECS4620-52P: 50-60 Hz

100 to 127 VAC, 12 A
200 to 240 VAC, 6 A

DC Input Power ECS4620-28T-DC: 36 to 75 VDC, 2.5 A

ECS4620-28F-DC: 36 to 75 VDC, 3.82 A

– 15 –

Chapter 1

| Switch Description

Key Technical Specifications

Table 1: Key Technical Specifications (Continued)

Item Specification

Power Consumption* ECS4620-28T: 35 W max. (with expansion module)

ECS4620-28T-DC: 40 W max. (without expansion module)
ECS4620-28P: 501 W max. (with expansion module and PoE enabled)
ECS4620-28F: 50 W max. (with expansion module)
ECS4620-28F-DC: 60 W max. (without expansion module)
ECS4620-52T: 70 W max. (with expansion module)
ECS4620-52P: 960 W max. (with expansion module and PoE enabled)
The ECS4620-52P maximum power consumption is reduced to 780 W

when the device is powered from a connected RPS.

Maximum Current ECS4620-28T: 1.1 A @ 110 VAC (with expansion module)

ECS4620-28T-DC: 2.5 A @ 36 VDC (with expansion module)
ECS4620-28P: 4.56 A @ 110 VAC (with expansion module and PoE enabled)
ECS4620-28F: 0.51 A @ 100 VAC (with expansion module)
ECS4620-28F-DC: 3.82 A @ 36 VDC (with expansion module)
ECS4620-52T: 0.58 A @ 110 VAC (with expansion module)
ECS4620-52P: 7.92A @110 VAC (with expansion module and PoE enabled)

RPS Rating 12 V --- 10 A, -54.5 V --- 14.3 A

Weight ECS4620-28T/T-DC: 3.7 kg (8.16 lb)

ECS4620-28P: 4.5 kg (9.92 lb)
ECS4620-28F/F-DC: 3.8 kg (8.38 lb)
ECS4620-52T: 4.8 kg (10.58 lb)
ECS4620-52P: 6.58 kg (14.51 lb)

Size (W x D x H) ECS4620-28T/T-DC/P/F/F-DC: 44.0 x 31.5 x 4.4 cm (17.3 x 12.4 x 1.7 in.)

ECS4620-52T/P: 44.0 x 39.1 x 4.4 cm (17.3 x 15.4 x 1.7 in.)

Temperature Operating: 0° C to 45° C (32° F to 113° F)

Storage: -40° C to 70° C (-40° F to 158° F)

Humidity Operating: 10% to 90% (non-condensing)

Forwarding Mode Store-and-forward

Throughput Wire speed

Flow Control Full Duplex: IEEE 802.3x

Half Duplex: Back pressure

* Maximum power consumption values are measured under a 100 percent loading test and

should be used as estimates for planning purposes.

– 16 –

2 Installation Overview

This chapter includes these sections:

◆ “Package Contents” on page 17

◆ “Switch Installation Tasks” on page 18

Package Contents

After unpacking the switch, check the contents to be sure you have received all the
components.

◆ ECS4620-28T, ECS4620-28T-DC, ECS4620-28P, ECS4620-28F, ECS4620-28F-DC,

ECS4620-52T, or ECS4620-52P Switch

◆ AC Power Cord—either US, Continental Europe or UK

◆ DC connector plug (ECS4620-28T-DC and ECS4620-28F-DC only)

◆ Rack Mounting Kit — includes two brackets and eight screws

◆ Four adhesive foot pads

◆ Console cable — RJ-45 to DB-9

◆ Documentation — Quick Start Guide and Regulatory and Safety Information

◆ Documentation CD — includes Installation Guide, Web Management Guide, and

CLI Reference Guide.

– 17 –

Switch Installation Tasks

Task 1

Task 2

2

1

1

2

Follow these tasks to install the switch in your network. For full details on each task,
go to the relevant chapter or section by clicking on the link.

Chapter 2

| Installation Overview

Switch Installation Tasks

Caution:

Before installing your switch, first review all the safety statements and

guidelines in the Regulatory and Safety Information document.

Unpack Package and Check Contents

Unpack your switch and check the package contents to be sure you have received
all the items. See “Package Contents” on page 17.

Install the Chassis

The switch is designed to be installed in a standard 19-inch equipment rack. Plan
your rack installation and install the switch chassis in the rack. Be sure to take into
account switch cooling requirements.

Go to the chapter “Switch Chassis”.

Figure 3: Installing the Switch in a Rack

Attach the brackets to the switch.

Use the screws supplied with the rack to secure the switch in the rack.

– 18 –

Chapter 2

Task 3

1

2

1

2

1

2

1

2

| Installation Overview

Switch Installation Tasks

Ground the Switch and Power On

Connect a ground wire to the switch, and then use a AC power cable to connect the
switch to a AC power source..

Go to the chapter “Power and Grounding”.

Figure 4: Connecting AC Power

Connect a grounding wire to the grounding terminal..

Connect an external AC power source to the AC power socket of the switch using the supplied
AC power cord.

Connect DC Power

Connect a ground wire to the switch, and then use a DC power cable to connect the
switch to a DC power source.

Go to the chapter “Power and Grounding”.

Figure 5: Connecting DC Power

Connect a grounding wire to the grounding terminal..

Connect an external DC power source to the DC power socket of the switch using a DC power
cable.

– 19 –

Chapter 2

Task 4

1

1

Task 5

| Installation Overview

Switch Installation Tasks

Verify Switch Operation

Verify basic switch operation by checking the system LEDs.

When operating normally, the Power and Diag LEDs should both be on green. If
either of these LEDs are on amber, see “Diagnosing LED Indicators” on page 55.

Go to the section “Understanding the System Status LEDs” on page 51.

Figure 6: System LEDs

System Status LEDs.

Make Initial Configuration Changes

At this point, you may need to make a few basic switch configuration changes
before connecting to the network. It is suggested to connect to the switch console
port to perform this task.

The serial port’s configuration requirements are as follows: 115200 bps, 8
characters, no parity, one stop bit, 8 data bits, and no flow control.

You can log in to the command-line interface (CLI) using default settings: User
“admin” with the password “admin”.

Go to “How to Connect to the Console Port” on page 52

– 20 –

Figure 7: Console Port

1

2

1

2

Task 6

Chapter 2

| Installation Overview

Switch Installation Tasks

Connect console cable to switch’s Console port.

Connect console cable to PC’s DB-9 COM port.

For information on initial switch configuration:

Refer to the CLI Reference Guide.

Install Transceivers and Connect Cables

Install SFP/SFP+ transceivers and connect network cables to port interfaces:

◆ For RJ-45 ports, use 100-ohm Category 5, 5e or better twisted-pair cable for

1000BASE-T connections, Category 5 or better for 100BASE-TX connections,
and Category 3 or better for 10BASE-T connections.

◆ First install SFP/SFP+ transceivers and then connect fiber optic cabling to the

transceiver ports. The following transceivers are supported:

■

1000BASE-SX (ET4201-SX)

■

1000BASE-LX (ET4201-LX)

■

1000BASE-ZX (ET4201-ZX)

■

10GBASE-SR (ET5402-SR)

■

10GBASE-LR (ET5402-LR)

■

10GBASE-ER (ET5402-ER)

As connections are made, check the port status LEDs to be sure the links are valid.

– 21 –

Go to the chapter “Port Connections”

1

2

1

2

Figure 8: Making a Connection to an RJ-45 Port

Chapter 2

| Installation Overview

Switch Installation Tasks

10/100/1000BASE-T RJ-45 Port.

Twisted-pair Cable with RJ-45 Plug.

– 22 –

3 Switch Chassis

The switch is designed to be installed in a standard 19-inch equipment rack.

Before continuing with switch installation, first review the general guidelines and
switch cooling requirements in this chapter.

This chapter includes these sections:

◆ “General Installation Guidelines” on page 23

◆ “Switch Cooling Requirements” on page 24

◆ “How to Install the Switch in a Rack” on page 25

◆ “How to Install the Switch on a Shelf or Desktop” on page 28

◆ “Optional Media Expansion Module” on page 29

◆ “How to Install an Optional Media Expansion Module” on page 29

General Installation Guidelines

Be sure to follow the guidelines below when choosing a location.

The installation location should:

◆ be able to maintain its temperature within 0 to 45 ° C (32 to 113 ° F) and its

humidity within 5% to 95%, non-condensing.

◆ provide adequate space (approximately five centimeters or two inches) on all

sides for proper air flow.

◆ be accessible for installing, cabling and maintaining the device.

◆ allow the status LEDs to be clearly visible.

◆ Make sure twisted-pair cable is always routed away from power lines,

fluorescent lighting fixtures and other sources of electrical interference, such as
radios and transmitters.

– 23 –

◆ Make sure that the unit is connected to a separate grounded power outlet and

is powered from an independent circuit breaker. As with any equipment, using
a filter or surge suppressor is recommended. Verify that the external AC power
requirements for the switch can be met as listed under “AC Power Supply

Specifications” on page 32.

Switch Cooling Requirements

Wherever the switch is located, be sure to pay close attention to switch cooling
requirements. The location should be well ventilated and provide unrestricted
airflow at the front, back, and sides of the switch. If the airflow is insufficient, it may
cause the switch to overheat and possibly fail.

The switches support the following fans:

◆ ECS4620-28F/52T: two fans

Chapter 3

Switch Cooling Requirements

| Switch Chassis

◆ ECS4620-28P: three fans

◆ ECS4620-52P: four fans

The following figure shows the cool air intake and the hot air exhaust airflow into
and from the switch.

Figure 9: Switch Cooling

– 24 –

Chapter 3

How to Install the Switch in a Rack

| Switch Chassis

The ECS4620-28T and ECS4620-28T-DC use a fanless cooling design. The following
figure shows the convective airflow from the switch.

Figure 10: Switch Cooling (ECS4620-28T/ECS4620-28T-DC)

Rack Cooling When mounting the switch in an enclosed rack or cabinet, be sure to check the

following guidelines to prevent overheating:

◆ Make sure that enough cool air can flow into the enclosure for the equipment it

contains.

◆ Check that the rack or cabinet allows the hot air to exit the enclosure (normally

from the top) without circulating back into equipment.

◆ If the enclosure has sides or doors with ventilation holes, make sure they are

not blocked by cables or other obstructions.

◆ Route cables within the rack or cabinet to maximize the airflow.

◆ When possible, do not completely fill the rack or cabinet with equipment, allow

some unused space within the enclosure for better airflow.

How to Install the Switch in a Rack

When rack mounting the switch, pay particular attention to the following factors:

◆

Rack Types:

You can use any standard EIA 19-inch equipment rack with either

two or four posts. The bracket hole pattern should be spaced 1U (1.75 in. or

4.45 cm) apart.

◆

Rack Stability:

Whenever possible, secure the rack to the building ceiling or

floor, particularly if you are located in a region where earthquakes are common.

– 25 –

◆

Rack Planning:

Chapter 3

How to Install the Switch in a Rack

When installing equipment in a rack, first plan how units can

| Switch Chassis

be best arranged. Try to always mount the heaviest equipment at the bottom
of the rack.

◆

Te mp er a tu re :

Since the temperature within a rack assembly may be higher
than the ambient room temperature, check that the rack-environment
temperature is within the specified operating temperature range. See “Switch

Cooling Requirements” on page 24.

◆

Mechanical Loading:

Do not place any equipment on top of a rack-mounted

unit.

◆

Circuit Overloading:

Be sure that the supply circuit to the rack assembly is

not overloaded.

◆

Grounding:

Rack-mounted equipment should be properly grounded.

Rack-Mounting Items Before you start to rack-mount the switch, be sure to have the following items

available:

Rack-Mount

Procedure

◆ Four mounting screws for each device you plan to install in a rack—these are

not included. Be sure to use the rack mounting screws that are supplied with
the rack.

◆ A screwdriver (Phillips or flathead, depending on the type of screws used).

To rack mount the switch, follow these steps:

Caution:

Installing the switch in a rack requires two people: One should position

the switch in the rack, while the other secures it using the mounting screws.

1. Attach the brackets to the device using the screws provided in the Rack

Mounting Kit.

– 26 –

Chapter 3

1

2

1

2

1

1

How to Install the Switch in a Rack

| Switch Chassis

Figure 11: Attaching the Brackets

Bracket Screws Rack Mounting Bracket

2. Following your rack plan, mark the holes in the rack where the switch will be

installed.

3. One person should lift the switch into the rack so that it is aligned with the

marked holes.

4. The second person should secure the switch in the rack, using four rack-

mounting screws (not provided).

Figure 12: Installing the Switch in a Rack

Rack Mount Screws

5. If installing a single switch only, go to “Power and Grounding” on page 31.

6. If installing multiple switches, repeat steps 1 to 4 to mount the switches

following your rack plan.

– 27 –

How to Install the Switch on a Shelf or Desktop

1

1

The switch can be installed on any flat surface such as a desktop or shelf. To mount
the switch on a flat surface, follow these steps:

1. Attach the four adhesive feet to the bottom of the first switch.

Figure 13: Attaching the Adhesive Feet

Chapter 3

How to Install the Switch on a Shelf or Desktop

| Switch Chassis

Adhesive Feet

2. Set the device on a flat surface near an AC power source, making sure there are

at least two inches of space on all sides for proper airflow.

3. If installing a single switch only, go to “How to Connect to AC Power” on

page 34.

4. If installing multiple switches, attach four adhesive feet to each one. Place each

device squarely on top of the one below, in any order.

– 28 –

Optional Media Expansion Module

The switches support an optional hot-swappable, dual-port 10G SFP+ media
expansion module that installs in the rear of the switch chassis.

The module’s SFP+ slots support standard 10G SFP+ transceivers. The
10GBASE transceivers operate at 10 Gbps full duplex with support for flow control.

Figure 14: Dual-Port 10G SFP+ Module

Chapter 3

Optional Media Expansion Module

| Switch Chassis

How to Install an Optional Media Expansion Module

Note:

The slide-in modules are hot-swappable, you do not need to power off the

switch before installing or removing a module.

To install an optional module into the switch, do the following:

1. Remove the blank metal plate (or a previously installed module) from the

appropriate slot by removing the two screws with a flat-head screwdriver.

2. Before opening the package that contains the module, touch the bag to the

switch casing to discharge any potential static electricity. Also, it is
recommended to use an ESD wrist strap during installation.

3. Remove the module from the anti-static shielded bag.

– 29 –

Chapter 3

1

2

1

2

How to Install an Optional Media Expansion Module

| Switch Chassis

Figure 15: Installing an Optional Module

Module Slot Media Expansion Module

4. Holding the module level, guide it into the carrier rails on each side and gently

push it all the way into the slot, ensuring that it firmly engages with the
connector.

5. If you are sure the module is properly mated with the connector, tighten the

retainer screws to secure the module in the slot.

6. The Module LED on the switch’s front panel should turn green to confirm that

the module is correctly installed and ready to use.

– 30 –

4 Power and Grounding

This chapter focuses on how to connect power to the switch, grounding the
chassis, and how to power-on the switch.

This chapter includes this sections:

◆ “AC Power Supply ” on pa ge 31

◆ “DC Power Supply” on page 32

◆ “Optional Redundant Power Supply” on page 33

◆ “Grounding the Chassis” on page 33

◆ “How to Connect to AC Power” on page 34

◆ “How to Connect to DC Power” on page 35

AC Power Supply

The switch requires power from an external AC power supply that can meet the
required specification described in Tab le 2. A standard AC power socket is located
on the rear panel of the switch. The power socket is for the AC power cord.

Figure 16: AC Power Supply Socket

– 31 –

Chapter 4

1

2

3

132

Table 2: AC Power Supply Specifications

Item Description

AC Input ECS4620-28T: 100 to 240 V, 50-60 Hz, 1.5 A

ECS4620-28P: 100 to 240 V, 50-60 Hz, 10 A
ECS4620-28F: 100 to 240 V, 50-60 Hz, 2 A
ECS4620-52T: 100 to 240 V, 50-60 Hz, 2 A
ECS4620-52P: 100 to 127 V, 12 A ; 200 to 240 V, 6 A, 50-60 Hz

| Power and Grounding

DC Power Supply

DC Power Supply

Maximum Power
Consumption

ECS4620-28T: 40 W max. (with expansion module)
ECS4620-28P: 501 W max. (with expansion module and PoE enabled)
ECS4620-28F: 50 W max. (with expansion module)
ECS4620-28F-DC: 60 W max. (with expansion module)
ECS4620-52T: 70 W max. (with expansion module)
ECS4620-52P: 960 W max. (with expansion module and PoE enabled)
The ECS4620-52P maximum power consumption is reduced to 780 W

when the device is powered from a connected RPS.

The ECS4620-28T-DC and ECS4620-28F-DC require power from an external DC
power circuit that can provide 36 to 75 VDC. A DC terminal is located on the rear
panel of the switch. The terminal is for connecting the DC power circuit.

Figure 17: DC Terminal

VDC Power Pin Chassis Ground Pin

VDC Return Pin

Table 3: DC Power Supply Specifications

Item Description

DC Input ECS4620-28T-DC: 36 to 75 VDC 2.5 A

ECS4620-28F-DC: 36 to 75 VDC 3.82 A

Maximum Power
Consumption

ECS4620-28T-DC: 40 W max. (without expansion module)
ECS4620-28F-DC: 60 W max. (without expansion module)

– 32 –

Optional Redundant Power Supply

1

1

1

2

1

2

The ECS4620-52P switch supports an optional redundant power supply (RPS)
connection. The connector labeled “RPS” on the switch rear panel is for the
optional RPS.

Figure 18: Redundant Power Supply Connector

RPS Connector

Table 4: RPS Specifications

Chapter 4

Optional Redundant Power Supply

| Power and Grounding

Item Description

Input Power 100-240 VAC, 50-60 Hz, 12 A

Output Power 12 VDC, 10.5 A

Grounding the Chassis

The rear panel of the switch chassis includes a dual-hole grounding terminal. It
must be connected to ground to ensure proper operation and to meet
electromagnetic interference (EMI) and safety requirements.

Figure 19: Grounding Terminal

-54.5 VDC, 14.3 A

Grounding Wire Grounding Terminal

– 33 –

Chapter 4

1

2

1

2

| Power and Grounding

How to Connect to AC Power

Before powering on the switch, ground the switch to earth as described below.

1. Ensure that the rack on which the switch is to be mounted is properly

grounded and in compliance with ETSI ETS 300 253.

2. Ensure that there is a good electrical connection to the grounding point on the

rack (no paint or isolating surface treatment).

3. Disconnect all power cables to the switch.

4. The switch chassis is connected internally to 0 V. This circuit is connected to the

dual-hole grounding terminal on the rear panel of the switch (left of the AC
power socket). The surface area around this terminal is not painted in order to
provide for a good connection. Attach a 6 AWG stranded copper wire to the
grounding terminal on the switch.

5. Then attach the grounding wire to the ground point on the rack.

Caution:

connections have been disconnected.

How to Connect to AC Power

To supply AC power to the switch, first verify that the external AC power supply can
provide power that meets the specifications in Tab le 2.

To connect the switch to a power source:

1. Plug the power cord into a grounded, 3-pin, AC power source.

Figure 20: AC Power Cord and Power Socket

The earth connection must not be removed unless all supply

AC Power Cord AC Power Socket

– 34 –

2. Insert the plug on the other end of the power cord directly into the AC input

socket on the back of the switch.

Note:

If your country’s AC power outlet standards do not match the power plug of
the included AC power cord, you will need to change the AC power cord. You must
use a cord set that has been approved for the socket type in your country.

3. Check the LED indicators on the switch front panel as the unit is powered on to

verify that power is being received. If not, recheck the power cord connections
at the AC supply source and back panel power input connector.

How to Connect to DC Power

When using DC power, an external DCpower supply circuit must be connected to
the DC power connector.

Chapter 4

How to Connect to DC Power

| Power and Grounding

Warning:

that power to the feed lines is turned off at the supply circuit breaker or
disconnected from the power bus.

Note:

another switch power supply in a load-sharing mode. If one power supply fails, the
other power supply takes over the full load of the switch.

Note:

the switch, all intermediate wiring and circuitry should be rated to carry a load at
least two times the maximum rating for this switch, as described in Table 2, “AC

Power Supply Specifications,” on page 32.

Note:

copper wire within the range of 10 to18 AWG.

Note:

Wiring of the DC power supply terminals depends on the equipment in use at the
local site, but should be wired in such a way as to meet the input requirements
shown in Figure 21 on page 36. The wiring should also be color coded according to
local standards to ensure that the input power and ground lines can be easily
distinguished.

Before wiring the DC plug or connecting power to the switch, ensure

1+1 redundancy is a system where a switch power supply is backed up by

To provide adequate circuit protection between the DC power supply and

The wiring between the DC power supply and the switch must be stranded

Wiring for the power input terminals on the switch are described below.

– 35 –

Chapter 4

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132

| Power and Grounding

How to Connect to DC Power

To connect the switch to a power source:

1. Verify that the external DC power supply can provide 36 to 75 VDC, 3.82 A

maximum.

2. Prepare two wires for the DC power source. Use 10 to 18 AWG stranded copper

wire. Make sure these wires are not plugged into the power source.

3. Use a wire stripper to carefully strip about a half an inch of the outer insulation

off the end of each wire, exposing the copper core.

4. Twist the copper wire strands together to form a tight braid. If possible, solder

the exposed braid of wire together for better conductivity.

5. Connect the external power feed and power ground/return lines to the DC plug

(provided with the switch) as shown in Figure 21. The brown wire connects to
the “-” pin, and the blue wire to the “+” pin. Use a small flat-tip screwdriver to
loosen the screws on the power plug and open the wire clamps.

Insert the wire leads into the openings shown in Figure 21. Each lead inserted
in the power plug must match the lead attached to the power source. Use the
label on the DC power connection block to identify the appropriate power
input and return or ground lines.

Figure 21: DC Plug Connections

VDC (blue wire) Chassis Ground (yellow-green wire)

VDC Return (brown wire)

– 36 –

Chapter 4

How to Connect to DC Power

| Power and Grounding

Warning:

will not work properly and may damage the switch.

If the power leads are plugged into the wrong holes, the power supply

6. Push each wire about half an inch into the opening on the plug, and tighten

down the clamp screw securely. You should not be able to pull on the wire and
dislodge it.

7. Insert the power plug in the power receptacle on the rear panel.

8. At the power source, turn on the power for the feed lines or power bus.

9. Check the the Power LED indicator as the switch is powered on. If the Power

LED is not on, recheck the power supply and power cable connections at the
supply source.

– 37 –

5 Port Connections

This chapter focuses on making connections to switch network interfaces,
including how to install optional transceivers, and details on network cable
specifications.

This chapter includes these sections:

◆ “Cable Labeling and Connection Records” on page 39

◆ “Understanding the Port Status LEDs” on page 40

◆ “How to Install an SFP/SFP+ Transceiver” on page 40

◆ “How to Connect to Twisted-Pair Copper Ports” on page 42

◆ “How to Connect to SFP/SFP+ Fiber Optic Ports” on page 46

◆ “Making 10 Gbps DAC Connections” on page 48

◆ “Connecting Switches in a Stack” on page 48

– 38 –

Cable Labeling and Connection Records

When planning a network installation, it is essential to label the opposing ends of
cables and to record where each cable is connected. Doing so will enable you to
easily locate inter-connected devices, isolate faults and change your topology
without need for unnecessary time consumption.

To best manage the physical implementations of your network, follow these
guidelines:

◆ Clearly label the opposing ends of each cable.

◆ Using your building’s floor plans, draw a map of the location of all network-

connected equipment. For each piece of equipment, identify the devices to
which it is connected.

◆ Note the length of each cable and the maximum cable length supported by the

switch ports.

Chapter 5

Cable Labeling and Connection Records

| Port Connections

◆ For ease of understanding, use a location-based key when assigning prefixes to

your cable labeling.

◆ Use sequential numbers for cables that originate from the same equipment.

◆ Differentiate between racks by naming accordingly.

◆ Label each separate piece of equipment.

◆ Display a copy of your equipment map, including meanings of all abbreviations

at each equipment rack.

– 39 –

Understanding the Port Status LEDs

1

2

1

2

The switch includes LED indicators for each port to indicate link status and network
activity. The port LEDs are shown below and described in the following table.

Figure 22: Port Status LEDs

Port 1-50 Link/Activity LEDs Port 51-52 Link/Activity LEDs

Chapter 5

Understanding the Port Status LEDs

| Port Connections

Table 5: Port Status LEDs

LED Condition Status

1000BASE-T RJ-45 Ports 1-24/48

Link/Activity On/Blinking Green Port has a valid link. Blinking indicates activity.

On/Blinking Amber Port has a valid link and is supplying PoE power.

Off The link is down.

How to Install an SFP/SFP+ Transceiver

The switch provides slots for optional SFP/SFP+ transceivers. The supported
transceiver types are listed below:

◆ 1000BASE-SX (ET4201-SX)

◆ 1000BASE-LX (ET4201-LX)

◆ 1000BASE-ZX (ET4201-ZX)

Blinking indicates activity. (ECS4620-52P only)

◆ 10GBASE-SR (ET5402-SR)

◆ 10GBASE-LR (ET5402-LR)

◆ 10GBASE-ER (ET5402-ER)

– 40 –

Chapter 5

2

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2

How to Install an SFP/SFP+ Transceiver

Note:

SFP/SFP+ transceivers are hot-swappable. The switch does not need to be

| Port Connections

powered off before installing or removing a transceiver.

Note:

SFP/SFP+ transceivers are not provided in the switch package.

To install an SFP/SFP+ transceiver, do the following:

1. Consider network and cabling requirements to select an appropriate

transceiver type that is also compatible with the switch transceiver support.

2. If the SFP/SFP+ slot is covered with a rubber protective cap, remove the cap

and keep it for later replacement.

3. Insert the transceiver with the optical connector facing outward and the slot

connector facing down. Note that SFP/SFP+ transceivers are keyed so they can
only be installed in the correct orientation.

4. Slide the transceiver into the slot until it clicks into place. If you do not

immediately connect a cable to the port, use a rubber protective cap to keep
the transceiver optics clean.

Figure 23: Inserting an SFP/SFP+ Transceiver into a Slot

SFP+ Transceiver SFP+ Slot

Note:

To remove a transceiver: First disconnect the network cable, then pull the tab
to remove the transceiver from the slot.

– 41 –

How to Connect to Twisted-Pair Copper Ports

The RJ-45 ports on the switch support automatic MDI/MDI-X pinout configuration,
which enables you to use standard straight-through twisted-pair cables to connect
to any other network device (PCs, servers, switches, routers, or hubs).

The connection requires an unshielded twisted-pair (UTP) or shielded twisted-pair
(STP) cable with RJ-45 connectors at both ends.

Table 6: Maximum Twisted-Pair Copper Cable Lengths

Cable Type Maximum Cable Length Connector

1000BASE-T

Category 5, 5e, or 6 100-ohm UTP or STP 100 m (328 ft) RJ-45

100BASE-TX

Category 5 or better 100-ohm UTP or STP 100 m (328 ft) RJ-45

Chapter 5

How to Connect to Twisted-Pair Copper Ports

| Port Connections

Copper Cabling

Guidelines

10BASE-T

Category 3 or better 100-ohm UTP 100 m (328 ft) RJ-45

To ensure proper operation when installing the switch into a network, make sure
that the current cables are suitable for 10BASE-T, 100BASE-TX, or 1000BASE-T
operation. Check the following criteria against the current installation of your
network:

◆ Cable type: Unshielded twisted pair (UTP) or shielded twisted pair (STP) cables

with RJ-45 connectors; Category 5, 5e or better cable for 1000BASE-T
connections, Category 5 or better for 100BASE-TX connections, and Category 3
or better for 10BASE-T connections.

◆ Protection from radio frequency interference emissions

◆ Electrical surge suppression

◆ Separation of electrical wires (switch related or other) and electromagnetic

fields from data based network wiring

◆ Safe connections with no damaged cables, connectors or shields

10/100BASE-TX Pin

Assignments

All 100BASE-TX RJ-45 ports support automatic MDI/MDI-X operation, so you can
use straight-through or crossover cables for all network connections to PCs,
switches, or hubs. In straight-through cable, pins 1, 2, 3, and 6, at one end of the
cable, are connected straight through to pins 1, 2, 3, and 6 at the other end of the
cable.

– 42 –

How to Connect to Twisted-Pair Copper Ports

1

1

Figure 24: RJ-45 Connector

RJ-45 Pin Numbers

Table 7: 10/100BASE-TX MDI and MDI-X Port Pinouts

Chapter 5

| Port Connections

1000BASE-T

Assignments

port)

a

port)

MDI-X Signal Name

Receive Data plus (RD+)
GND (Positive Vport)

Receive Data minus (RD-)
GND (Positive Vport)

Transmit Data plus (TD+)

-52V power (Negative Vport)

Transmit Data minus (TD-)

-52V power (Negative Vport)

Pin

1 Transmit Data plus (TD+)

2 Transmit Data minus (TD-)

3 Receive Data plus (RD+)

4 -52V power (Negative Vport) GND (Positive Vport)

5 -52V power (Negative Vport) GND (Positive Vport)

6 Receive Data minus (RD-)

7 GND (Positive Vport) -52V power (Negative Vport)

8 GND (Positive Vport) -52V power (Negative Vport)

a The “+” and “-” signs represent the polarity of the wires that make up each wire pair.

MDI Signal Name

-52V power (Negative V

-52V power (Negative Vport)

GND (Positive V

GND (Positive Vport)

All 1000BASE-T ports support automatic MDI/MDI-X operation, so you can use
straight-through cables for all network connections to PCs, servers, or switches.

The table below shows the 1000BASE-T MDI and MDI-X port pinouts. These ports
require that all four pairs of wires be connected. Note that for 1000BASE-T
operation, all four pairs of wires are used for both transmit and receive.

Table 8: 1000BASE-T MDI and MDI-X Port Pinouts

Pin MDI Signal Name MDI-X Signal Name

1 Bi-directional Pair A Plus (BI_DA+)

-52V power (Negative V

2 Bi-directional Pair A Minus (BI_DA-)

-52V power (Negative V

port)

port)

– 43 –

Bi-directional Pair B Plus (BI_DB+)
GND (Positive Vport)

Bi-directional Pair B Minus (BI_DB-)
GND (Positive Vport)

Chapter 5

How to Connect to Twisted-Pair Copper Ports

Table 8: 1000BASE-T MDI and MDI-X Port Pinouts (Continued)

Pin MDI Signal Name MDI-X Signal Name

| Port Connections

3 Bi-directional Pair B Plus (BI_DB+)

GND (Positive V

4 Bi-directional Pair C Plus (BI_DC+)

-52V power (Negative Vport)

5 Bi-directional Pair C Minus (BI_DC-)

-52V power (Negative V

6 Bi-directional Pair B Minus (BI_DB-)

GND (Positive Vport)

7 Bi-directional Pair D Plus (BI_DD+)

GND (Positive Vport)

8 Bi-directional Pair D Minus (BI_DD-)

GND (Positive V

port)

port)

port)

Bi-directional Pair A Plus (BI_DA+)

-52V power (Negative Vport)

Bi-directional Pair D Plus (BI_DD+)
GND (Positive Vport)

Bi-directional Pair D Minus (BI_DD-)
GND (Positive Vport)

Bi-directional Pair A Minus (BI_DA-)

-52V power (Negative Vport)

Bi-directional Pair C Plus (BI_DC+)

-52V power (Negative Vport)

Bi-directional Pair C Minus (BI_DC-)

-52V power (Negative Vport)

1000BASE-T Cable Requirements

All Category 5 UTP cables that are used for 100BASE-TX connections should also
work for 1000BASE-T, providing that all four wire pairs are connected. However, it is
recommended that for all critical connections, or any new cable installations,
Category 5e (enhanced Category 5) or Category 6 cable should be used. The
Category 5e and 6 specifications include test parameters that are only
recommendations for Category 5. Therefore, the first step in preparing existing
Category 5 cabling for running 1000BASE-T is a simple test of the cable installation
to be sure that it complies with the IEEE 802.3-2008 standards.

Power-over-Ethernet The ECS4620-28P and ECS4620-52P switches support both IEEE 802.3af and IEEE

802.3at-2009 PoE standards that enable DC power to be supplied from the switch’s
RJ-45 copper ports to connected devices by utilizing certain pairs of the connecting
Ethernet cable.

For the ECS4620-28P, the total PoE power delivered by all ports cannot exceed the
maximum power budget of 410 W. This means that up to 13 ports can supply a
maximum 30 W of power simultaneously to connected devices (802.3at), or up to
24 ports can supply up to 15.4 W (802.3af).

For the ECS4620-52P, the total PoE power delivered by all ports cannot exceed the
maximum power budget of 780 W when power is provided from the RPS. This
means that up to 26 ports can supply a maximum 30 W of power simultaneously to
connected devices (802.3at), or up to 48 ports can supply up to 15.4 W (802.3af ).

Any PoE-compliant device attached to a port can directly draw power from the
switch over the Ethernet cable without requiring its own separate power source.
This capability gives network administrators centralized power control for devices
such as IP phones and wireless access points, which translates into greater network
availability.

– 44 –

Chapter 5

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How to Connect to Twisted-Pair Copper Ports

| Port Connections

For each attached PoE-compliant device, the switch automatically senses the load
and dynamically supplies the required power. The switch delivers power to a device
using the wire pairs in UTP or STP cable.

Connection Procedure Follow these steps to connect cables to 1000BASE-T RJ-45 twisted-pair copper

ports.

1. Attach one end of a twisted-pair cable segment to the device’s RJ-45 connector.

Figure 25: Making Twisted-Pair Connections

1000BASE-T RJ-45 Port Category 5, 5e, or 6 Cable

2. Attach the other end to an available port on the switch.

Make sure each twisted pair cable does not exceed 100 meters (328 ft) in
length.

3. As each connection is made, the Link LED (on the switch) corresponding to

each port will turn on green to indicate that the connection is valid.

– 45 –

How to Connect to SFP/SFP+ Fiber Optic Ports

The switch provides slots for SFP+ or SFP-compliant fiber-optic transceivers. Note
that all 10G SFP+ fiber optic ports operate at 10 Gbps full duplex. All 1000BASE
fiber optic ports operate at 1 Gbps full duplex.

Table 9: Maximum 10 Gigabit Ethernet Fiber Cable Lengths

Fiber Size Fiber Bandwidth Maximum Cable Length Connector

10GBASE-SR

62.5/125 micron multimode 160 MHz/km 2-26 m (7-85 ft.) LC

62.5/125 micron multimode 200 MHz/km 2-33 m (7-108 ft.) LC

50/125 micron multimode 400 MHz/km 2-66 m (7-216 ft.) LC

50/125 micron multimode 500 MHz/km 2-82 m (7-269 ft.) LC

50/125 micron multimode 2000 MHz/km 2-300 m (7-984 ft.) LC

10GBASE-LR

Chapter 5

| Port Connections

How to Connect to SFP/SFP+ Fiber Optic Ports

9/125 micron single-mode N/A 2 m - 10 km (7 ft - 6.2 miles) LC

10GBASE-ER

9/125 micron single-mode N/A 2 m - 40 km (7 ft - 24.8 miles) LC

Table 10: Maximum Gigabit Ethernet Fiber Cable Lengths

Cable Type Fiber Bandwidth Maximum Cable Length Connector

1000BASE-SX

62.5/125 micron multimode 160 MHz/km 2-220 m (7-722 ft) LC

200 MHz/km 2-275 m (7-902 ft) LC

50/125 micron multimode 400 MHz/km 2-500 m (7-1641 ft) LC

500 MHz/km 2-550 m (7-1805 ft) LC

1000BASE-LX

9/125 micron single-mode N/A 2 m - 10 km (7 ft - 6.2 miles) LC

1000BASE-ZX

9/125 micron single-mode N/A 2 m - 70 km (7 ft - 43.5 miles) LC

Note:

The length of fiber optic cable for a single switched link should not exceed
the relevant standards specified in this section. However, power budget constraints
should also be considered when calculating the maximum fiber optic cable length
for a particular link.

Note:

Maximum distances may vary for different SFP/SFP+ vendors.

– 46 –

Chapter 5

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How to Connect to SFP/SFP+ Fiber Optic Ports

| Port Connections

Connection Procedure Follow these steps to connect cables to SFP/SFP+ transceiver ports.

Warning:

This switch uses lasers to transmit signals over fiber optic cable. The
lasers are compliant with the requirements of a Class 1 Laser Product and are
inherently eye safe in normal operation. However, you should never look directly at
a transmit port when it is powered on.

Warning:

When selecting a fiber SFP/SFP+ device, considering safety, please make
sure that it can function at a temperature that is not less than the recommended
maximum operational temperature of the product. You must also use an approved
Laser Class 1 SFP/SFP+ transceiver.

1. Remove and keep the fiber port’s rubber plug. When not connected to a fiber

cable, the rubber plug should be replaced to protect the optics.

2. Check that the fiber terminators are clean. You can clean the cable plugs by

wiping them gently with a clean tissue or cotton ball moistened with a little
ethanol. Dirty fiber terminators on fiber optic cables will impair the quality of
the light transmitted through the cable and lead to degraded performance on
the port.

3. Connect one end of the cable to the SFP/SFP+ port on the switch and the other

end to the SFP/SFP+ port on the other device. Since SFP/SFP+ connectors are
keyed, the cable can be attached in only one orientation.

Figure 26: Making a Connection to an SFP+ Port

SFP+ Transceiver Port Fiber Optic Cable

4. As a connection is made, check the Link LED on the switch to be sure that the

connection is valid.

Note:

Be sure to secure cables properly and route them away from the switch
without exceeding the minimum bending radius for fiber cables (typically a few
inches). Use cable ties to bundle cables together and secure coiled loops of excess
cable. Do not let cables hang free supporting their own weight or pull in any way
that puts stress on the connectors.

– 47 –

Making 10 Gbps DAC Connections

Direct Attach Cable (DAC) is a method of connecting two SFP+ interfaces without
using optics and fiber cable. A fixed length of twinax copper cable is terminated at
each end with physically-compliant SFP+ transceivers that do not include all their
normal electronic and optical components. The result is a low cost, low-latency,
10G Ethernet solution for short distances, ideal for connections within a rack or for
stacking switches.

A 10G DAC connection is also known as twinax copper or 10GBASE-CR. DAC copper
cables are available in pre-terminated lengths up to 7 m (22.9 ft).

1. Plug the SFP+ transceiver connector on one end of a twinax copper cable

segment into an SFP+ slot on the link device.

2. Plug the other end of the twinax cable into an SFP+ slot on the switch.

3. Check that the Link LED on the switch turns on green to indicate that the

connection is valid.

Chapter 5

Making 10 Gbps DAC Connections

| Port Connections

Note:

When using DAC connections in a switch stack, be sure to follow the
procedure see “Connecting Switches in a Stack” on page 48.

Connecting Switches in a Stack

The 10G SFP+ ports on the switch front panel can be used as stacking ports to
provide a 40 Gbps stack backplane connection.
connected together using SFP+ transceivers and cables. One unit in the stack acts
as the Master for configuration tasks, all of the other units function in Slave mode,
but can automatically take over management of the stack if the Master unit fails.

Figure 27 on page 49 shows how the stack cables are connected between switches

in a stack. Each stacking connection is a 10 Gbps full-duplex link using Direct Attach
Cable (DAC) or other SFP+ transceivers and cables. The switch supports a line- and
ring-topology stacking configuration, or can be used stand alone. To ensure
minimal disruption in case a unit or stack cable fails, it is recommended to always
use a ring-topology.

In line-topology stacking there is a single stack cable connection between each
switch that carries two-way communications across the stack. In ring-topology
stacking, an extra cable is connected between the top and bottom switches
forming a “ring” or “closed-loop.” The closed-loop cable provides a redundant path
for the stack link, so if one link fails, stack communications can still be maintained.

Any 24-port or 48-port switches can be

Figure 27 illustrates a ring-topology stacking configuration.

– 48 –

Chapter 5

Connecting Switches in a Stack

When the stack is initially powered on, the Master unit is designated as unit 1 for a
ring topology. For a line topology, the stack is simply numbered from top to
bottom, with the first unit in the stack designated at unit 1. This unit identification
number appears on the Stack Unit ID LCD on the front panel of the switch. For more
information on stack configuration, refer to the CLI Reference Guide and Web
Management Guide.

To connect switches in a stack, perform the following steps:

| Port Connections

1. Plug one end of a stack cable in the right port of the top unit.

2. Plug the other end of a stack cable into the left port of the next unit.

3. Repeat steps 1 and 2 for each unit in the stack. Form a simple chain starting at

the right port on the top unit and ending at the left port on the bottom unit.

4. (Optional) To form a wrap-around topology, plug one end of a stack cable into

the right port on the bottom unit and the other end into the left port on the
top unit.

Figure 27: Making Stack Connections

5. To complete the stack configuration, you must use the switch CLI or web

interface to enable stacking on the SFP+ ports for each switch in the stack (refer
to the CLI Reference Guide and Web Management Guide). You can also select the
stack Master in the stack.

6. Reboot each switch in the stack to start stack operation.

– 49 –

6 Switch Management

Both switches include a management agent that allows you to configure or
monitor the switch using its embedded management software. To manage the
switch, you can make a direct connection to the console port (out-of-band), or you
can manage it through a network connection (in-band) using Telnet, Secure Shell
(SSH), a web browser, or SNMP-based network management software.

For a detailed description of the switch’s software features, refer to the Web
Management Guide and CLI Reference Guide.

This chapter includes these sections:

◆ “Understanding the System Status LEDs” on page 51

◆ “How to Connect to the Console Port” on page 52

– 50 –

Understanding the System Status LEDs

1

2

3 4 5

14253

The switch includes a display panel of key system LED indicators. The LEDs, which
are located on the front panel, are shown below and described in the following
table.

Figure 28: System Status LEDs

Chapter 6

| Switch Management

Understanding the System Status LEDs

Diag LED RPS LED

Master LED Stack LED

Power LED

(

Table 11: System Status LEDs

LED Condition Status

Power On Green Internal power operating normally.

On Amber Internal power supply has a fault.

Off Power off.

Diag
(Diagnostic)

RPS
(Redundant
Power Supply)

Stack On Green The SFP+ ports are operating in stacking mode.

On Green The system diagnostic test has completed successfully.

Blinking Green The system diagnostic test is in progress.

On Amber The system diagnostic test has detected a fault or a system

fan has failed.

On Green Redundant power supply is receiving power.

On Amber Redundant power supply present, but has a fault.

Off No redundant power supply is present.

Off The SFP+ ports are in uplink mode or there is no link.

Master On Green The switch is the Master unit in the stack.

On Amber The switch is operating as a Slave unit in the stack.

Off The switch is operating in stand-alone mode.

– 51 –

How to Connect to the Console Port

1

1

The RJ-45 Console port on the front panel of the switch is used to connect a
console device to the switch for out-of-band console configuration. The console
device can be a PC or workstation running a VT-100 terminal emulator, or a VT-100
terminal. A console cable is supplied with the switch for connecting to a PC’s
RS-232 serial DB-9 DTE (COM) port.

Note:

To connect to notebooks or other PCs that do not have a DB-9 COM port, use
a USB-to-male DB-9 adapter cable (not included with the switch).

Figure 29: Console Port

Chapter 6

How to Connect to the Console Port

| Switch Management

Console Port

The following table describes the pin assignments used in the console cable.

Table 12: Console Cable Wiring

Switch’s RJ-45
Console Port

6 RXD (receive data) <--------------------- 3 TXD (transmit data)

3 TXD (transmit data) ---------------------> 2 RXD (receive data)

4,5 SGND (signal ground) ----------------------- 5 SGND (signal ground)

No other pins are used.

Null Modem PC’s 9-Pin

DTE Port

The serial port’s default settings are as follows:

◆ Default Baud rate—115200 bps

◆ Character Size—8 Characters

◆ Parity—None

◆ Stop bit—One

– 52 –

Chapter 6

1

2

3

132

How to Connect to the Console Port

◆ Data bits—8

◆ Flow control—None

| Switch Management

Follow these steps to connect to the Console port:

1. Connect one end of the included RJ-45 to DB-9 serial cable to a DB-9 COM port

connector on the management PC.

2. Plug in the RJ-45 end of the serial cable to the Console port on the switch.

Figure 30: Console Port Connection

Switch’s RJ-45 Console Port Console Cable

PC’s DB-9 COM Port

3. Configure the PC’s COM port required settings using VT-100 terminal emulator

software (such as HyperTerminal) running on the management PC. The switch’s
default console port settings are:

■

115200 bps, 8 data bits, 1-stop bit, and no parity

4. Log in to the command-line interface (CLI) using one of the default user login

settings:

■

User — admin
Password — admin

or

■

User — guest
Password — guest

– 53 –

Chapter 6

How to Connect to the Console Port

| Switch Management

Note that the guest default user login will only allow a user to view switch
parameter data.

For a detailed description of connecting to the console and using the switch’s
command line interface (CLI), refer to the CLI Reference Guide.

– 54 –

A Troubleshooting

Diagnosing LED Indicators

Table 13: Troubleshooting Chart

Symptom Action

Power LED is Off

Diag LED is on Amber

RPS LED is on Amber

Link/Act LED is Off

◆

Check connections between the switch, the power cord, and the AC
power outlet.

◆

Check the AC power outlet is supplying 110-240 VAC.

◆

Contact your dealer for assistance.

◆

Power cycle the switch to try and clear the condition.

◆

If the condition does not clear, contact your dealer for assistance.

◆

Replace the RPS unit connected to the switch.

◆

If the condition does not clear, contact your dealer for assistance.

◆

Verify that the switch and attached device are powered on.

◆

Check the cable connectors are firmly plugged into the switch and
corresponding device.

◆

If the switch is installed in a rack, check the connections to the
punch-down block and patch panel.

◆

Verify that the proper cable type is used and its length does not
exceed specified limits.

◆

Check the attached device and cable connections for possible
defects. Replace the defective cable if necessary.

System Self-Diagnostic Test Failure

If the Diag LED indicates a failure of the system power-on-self-test (POST), you can
use a console connection to view the POST results. The POST results may indicate a
failed component or help troubleshoot the problem. For more information on
connecting to the console port and using the CLI, refer to the CLI Reference Guide.

Note that a POST failure normally indicates a serious hardware fault that cannot be
rectified or worked around. If you encounter a POST failure, you should contact
your dealer for assistance.

– 55 –

Power and Cooling Problems

If a power indicator does not turn on when the power cord is plugged in, you may
have a problem with the power outlet, power cord, or internal power supply.
However, if the switch shuts down after operating for a continuous period, check
for loose power connections, power losses or surges at the power outlet. If you still
cannot isolate the problem, the internal power supply may be defective.

Installation

Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning (such as the power cord or network
cabling), test them in an alternate environment where you are sure that all the
other components are functioning properly.

Chapter A

Power and Cooling Problems

| Troubleshooting

In-Band Access

You can access the management agent in the switch through a connection to any
port using Telnet, a web browser, or other network management software tools.
However, you must first configure the switch with a valid IP address, subnet mask,
and default gateway. If you have trouble establishing a link to the management
agent, check to see if you have a valid network connection. Then verify that you
entered the correct IP address. Also, be sure the switch port has not been disabled.
If it has not been disabled, then check the network cabling that connects your
remote location to the switch.

– 56 –

Index

Numerics

10 Mbps collision domain 46
10 Mbps connectivity rules
10/100 PIN assignments
1000BASE fiber cable lengths
1000BASE-T PIN assignments
10BASE-T

cable lengths

10GBASE fiber cable lengths

46

46

42

46

A

adhesive feet, attaching 28
air flow requirements

23

B

brackets, attaching 27
buffer size

15

C

cable

Ethernet cable compatibility
labeling and connection records
lengths

connectivity rules

10 Mbps

console port

pin assignments
console port, pin assignments
contents of package
cord sets, international

46

46

52

17

35

46
43

52

42

39

indicators, LED
installation

power requirements

site requirements
installation troubleshooting
introduction

40, 51

24

23

56

11, 17

L

laser safety 47
LED indicators

DIAG

51

port

40

PWR

51

location requirements

23

M

management

out-of-band

web-based

50

50

O

out-of-band management 50

P

package contents 17
pin assignments

console port
power and cooling problems
Power-over-Ethernet

52

56

44

D

diagnosing LED indicators 55

E

electrical interference, avoiding 23
equipment checklist
Ethernet connectivity rules

17

46

I

in-band access 56

R

rubber foot pads, attaching 28

S

screws for rack mounting 26
site selelction
specifications

environmental
status LEDs
surge suppressor, using

– 57 –

23

40, 51

16

24

W

web-based management 50

Index

– 58 –

The Declaration of Conformity (DoC) can be obtained from www.edge-core.com -> support -> download -> declarations & certifications.

ECS4620 Series

E112016-AP-R05

150200000918A R05