Juniper EX4600 User Manual

EX4600 Switch Hardware Guide

Published

2020-12-16

Juniper Networks, Inc. 1133 Innovation Way Sunnyvale, California 94089 USA 408-745-2000 www.juniper.net

Juniper Networks, the Juniper Networks logo, Juniper, and Junos are registered trademarks of Juniper Networks, Inc. in the United States and other countries. All other trademarks, service marks, registered marks, or registered service marks are the property of their respective owners.

Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper Networks reserves the right to change, modify, transfer, or otherwise revise this publication without notice.

EX4600 Switch Hardware Guide

The information in this document is current as of the date on the title page.

YEAR 2000 NOTICE

Juniper Networks hardware and software products are Year 2000 compliant. Junos OS has no known time-related limitations through the year 2038. However, the NTP application is known to have some difficulty in the year 2036.

END USER LICENSE AGREEMENT

The Juniper Networks product that is the subject of this technical documentation consists of (or is intended for use with) Juniper Networks software. Use of such software is subject to the terms and conditions of the End User License Agreement (“EULA”) posted at https://support.juniper.net/support/eula/. By downloading, installing or using such software, you agree to the terms and conditions of that EULA.

About the Documentation | x

Documentation and Release Notes | x

Using the Examples in This Manual | x

Merging a Full Example | xi

Merging a Snippet | xii

Documentation Conventions | xii

Documentation Feedback | xv

Requesting Technical Support | xv

Self-Help Online Tools and Resources | xvi

Creating a Service Request with JTAC | xvi

iii

Overview

EX4600 System Overview | 18

EX4600 Switch Hardware Overview | 18

Benefits of the EX4600 Switch | 19

EX4600 Hardware | 19

System Software | 20

EX4600 Switch Models | 21

Understanding Redundancy of EX4600 Switch Components and Functionality | 22

EX4600 Chassis | 22

Chassis Physical Specifications for an EX4600 Switch | 23

Field-Replaceable Units in an EX4600 Switch | 23

Port Panel of an EX4600 Switch | 24

Access Port and Uplink Port LEDs on an EX4600 Switch | 25

Management Panel of an EX4600 Switch | 28

Chassis Status LEDs on an EX4600 Switch | 30

Expansion Modules for the EX4600 | 32

EX4600-EM-8F | 33

QFX-EM-4Q | 34

EX4600 Cooling System | 35

Cooling System and Airflow in an EX4600 Switch | 35

Fan Modules | 36

Do Not Install Components with Different Airflow or Wattage in the Switch | 38

Fan Module Status | 39

Fan Module LED on an EX4600 Switch | 40

EX4600 Power System | 41

AC Power Supply in an EX4600 Switch | 41

AC Power Supply LEDs on an EX4600 Switch | 43

AC Power Specifications for an EX4600 Switch | 44

AC Power Cord Specifications for an EX4600 Switch | 45

DC Power Supply in an EX4600 Switch | 46

DC Power Supply LEDs in EX4600 Switches | 48

DC Power Specifications for an EX4600 Switch | 50

Grounding Cable and Lug Specifications for an EX4600 Switch | 50

Site Planning, Preparation, and Specifications

Site Preparation Checklist for an EX4600 Switch | 53

EX4600 Site Guidelines and Requirements | 54

Environmental Requirements and Specifications for EX Series Switches | 55

General Site Guidelines | 60

Site Electrical Wiring Guidelines | 60

Rack Requirements for an EX4600 Switch | 61

Cabinet Requirements for an EX4600 Switch | 63

Clearance Requirements for Airflow and Hardware Maintenance for an EX4600 Switch | 64

EX4600 Network Cable and Transceiver Planning | 64

Determining Interface Support for an EX4600 Switch | 65

Cable Specifications for QSFP+ Transceivers on EX4600 Series Switches | 66

Network Cable Specifications for EX4600 Switches | 68

Understanding EX Series Switches Fiber-Optic Cable Signal Loss, Attenuation, and

Dispersion | 68

Signal Loss in Multimode and Single-Mode Fiber-Optic Cable | 69

Attenuation and Dispersion in Fiber-Optic Cable | 69

Calculating the Fiber-Optic Cable Power Budget for EX Series Devices | 70

Calculating the Fiber-Optic Cable Power Margin for EX Series Devices | 70

EX4600 Management Cable Specifications and Pinouts | 72

Cable Specifications for Console and Management Connections for the EX4600 | 73

USB Port Specifications for an EX Series Switch | 73

Console Port Connector Pinout Information | 74

RJ-45 Management Port Connector Pinout Information | 75

Initial Installation and Configuration

Unpacking and Mounting an EX4600 Switch | 77

Installing and Connecting an EX4600 Switch | 77

Unpacking an EX4600 Switch | 78

Mounting an EX4600 Switch in a Rack or Cabinet | 79

Before You Begin Rack Installation | 80

Four Post Procedure | 81

Connecting the EX4600 to Power | 83

Connecting Earth Ground to an EX4600 Switch | 84

Connecting AC Power to an EX4600 Switch | 85

Connecting DC Power to an EX4600 Switch | 88

Connecting the EX4600 to Management Devices | 92

Connect a Device to a Network for Out-of-Band Management | 93

Connect a Device to a Management Console Using an RJ-45 Connector | 93

Connecting EX4600 Switches in a Virtual Chassis | 95

Configuring Junos OS on the EX4600 | 96

Maintaining Components

Maintaining the EX4600 Switch Cooling System | 100

Removing a Fan Module from an EX4600 Switch | 100

Installing a Fan Module in an EX4600 Switch | 101

Maintaining the EX4600 Switch Power System | 103

Removing a Power Supply from an EX4600 Switch | 103

Installing a Power Supply in an EX4600 Switch | 105

Maintaining the Expansion Module in an EX4600 Switch | 106

Removing an Expansion Module from an EX4600 Switch | 107

Installing an Expansion Module in an EX4600 Switch | 108

Maintain Transceivers | 110

Remove a Transceiver | 110

Remove a QSFP28 Transceiver | 114

Install a Transceiver | 116

Install a QSFP28 Transceiver | 118

Maintain Fiber-Optic Cables | 120

Connect a Fiber-Optic Cable | 120

Disconnect a Fiber-Optic Cable | 121

How to Handle Fiber-Optic Cables | 122

Removing the EX4600 Switch | 123

Installing and Removing EX4600 Switch Hardware Components | 124

Powering Off an EX4600 Switch | 125

Removing an EX4600 Switch from a Rack or Cabinet | 127

Troubleshooting Hardware

Troubleshooting the EX4600 Components | 130

Understand Alarm Types and Severity Levels on EX Series Switches | 130

Interface Alarm Messages | 132

Creating an Emergency Boot Device | 132

Performing a Recovery Installation | 134

Contacting Customer Support and Returning the Chassis or Components

Returning an EX4600 Chassis or Components | 137

Returning an EX4600 Switch or Component for Repair or Replacement | 137

Locating the Serial Number on an EX4600 Switch or Component | 138

Listing the Chassis and Component Details Using the CLI | 138

Locating the Chassis Serial Number ID Label on an EX4600 Switch | 140

Locating the Serial Number ID Labels on FRU Components | 140

Contact Customer Support to Obtain Return Material Authorization | 140

Packing an EX4600 Switch or Component for Shipping | 141

Packing an EX4600 Switch for Shipping | 142

Packing EX4600 Switch Components for Shipping | 143

Safety and Compliance Information

vii

General Safety Guidelines and Warnings | 146

Definitions of Safety Warning Levels | 147

Qualified Personnel Warning | 150

Warning Statement for Norway and Sweden | 151

Fire Safety Requirements | 151

Fire Suppression | 151

Fire Suppression Equipment | 151

Installation Instructions Warning | 153

Chassis and Component Lifting Guidelines | 153

Restricted Access Warning | 155

Ramp Warning | 157

Rack-Mounting and Cabinet-Mounting Warnings | 158

Grounded Equipment Warning | 164

Laser and LED Safety Guidelines and Warnings | 165

General Laser Safety Guidelines | 165

Class 1 Laser Product Warning | 166

Class 1 LED Product Warning | 167

Laser Beam Warning | 168

Radiation from Open Port Apertures Warning | 169

Maintenance and Operational Safety Guidelines and Warnings | 170

Battery Handling Warning | 171

Jewelry Removal Warning | 172

Lightning Activity Warning | 174

Operating Temperature Warning | 175

Product Disposal Warning | 177

General Electrical Safety Guidelines and Warnings | 178

Action to Take After an Electrical Accident | 179

Prevention of Electrostatic Discharge Damage | 180

viii

AC Power Electrical Safety Guidelines | 181

AC Power Disconnection Warning | 183

DC Power Electrical Safety Guidelines | 184

DC Power Disconnection Warning | 185

DC Power Grounding Requirements and Warning | 187

DC Power Wiring Sequence Warning | 189

DC Power Wiring Terminations Warning | 192

Multiple Power Supplies Disconnection Warning | 195

TN Power Warning | 196

Agency Approvals for EX Series Switches | 196

Compliance Statements for EMC Requirements for EX Series Switches | 197

Canada | 198

Taiwan | 199

European Community | 199

Israel | 199

Japan | 199

Korea | 200

United States | 200

FCC Part 15 Statement | 200

Nonregulatory Environmental Standards | 201

Compliance Statements for Acoustic Noise for EX Series Switches | 202

Statements of Volatility for Juniper Network Devices | 202

About the Documentation

IN THIS SECTION

Documentation and Release Notes | x

Using the Examples in This Manual | x

Documentation Conventions | xii

Documentation Feedback | xv

Requesting Technical Support | xv

Use this guide to install hardware and perform initial software configuration, routine maintenance, and troubleshooting for the EX4600 switch. After completing the installation and basic configuration procedures covered in this guide, refer to the Junos OS documentation for information about further software configuration.

Documentation and Release Notes

To obtain the most current version of all Juniper Networks®technical documentation, see the product documentation page on the Juniper Networks website at https://www.juniper.net/documentation/.

If the information in the latest release notes differs from the information in the documentation, follow the product Release Notes.

Juniper Networks Books publishes books by Juniper Networks engineers and subject matter experts. These books go beyond the technical documentation to explore the nuances of network architecture, deployment, and administration. The current list can be viewed at https://www.juniper.net/books.

Using the Examples in This Manual

If you want to use the examples in this manual, you can use the load merge or the load merge relative command. These commands cause the software to merge the incoming configuration into the current candidate configuration. The example does not become active until you commit the candidate configuration.

If the example configuration contains the top level of the hierarchy (or multiple hierarchies), the example is a full example. In this case, use the load merge command.

If the example configuration does not start at the top level of the hierarchy, the example is a snippet. In this case, use the load merge relative command. These procedures are described in the following sections.

Merging a Full Example

To merge a full example, follow these steps:

1. From the HTML or PDF version of the manual, copy a configuration example into a text file, save the file with a name, and copy the file to a directory on your routing platform.

For example, copy the following configuration to a file and name the file ex-script.conf. Copy the ex-script.conf file to the /var/tmp directory on your routing platform.

system {

scripts {

commit {

file ex-script.xsl;

}

} } interfaces {

fxp0 {

disable; unit 0 {

family inet {

address 10.0.0.1/24;

}

} }

2. Merge the contents of the file into your routing platform configuration by issuing the load merge configuration mode command:

[edit] user@host# load merge /var/tmp/ex-script.conf load complete

Merging a Snippet

To merge a snippet, follow these steps:

1. From the HTML or PDF version of the manual, copy a configuration snippet into a text file, save the file with a name, and copy the file to a directory on your routing platform.

For example, copy the following snippet to a file and name the file ex-script-snippet.conf. Copy the ex-script-snippet.conf file to the /var/tmp directory on your routing platform.

commit {

file ex-script-snippet.xsl; }

2. Move to the hierarchy level that is relevant for this snippet by issuing the following configuration mode command:

[edit] user@host# edit system scripts [edit system scripts]

xii

3. Merge the contents of the file into your routing platform configuration by issuing the load merge relative configuration mode command:

[edit system scripts] user@host# load merge relative /var/tmp/ex-script-snippet.conf load complete

For more information about the load command, see CLI Explorer.

Documentation Conventions

Table 1 on page xiii defines notice icons used in this guide.

Table 1: Notice Icons

xiii

DescriptionMeaningIcon

Indicates important features or instructions.Informational note

Caution

Indicates a situation that might result in loss of data or hardware damage.

Alerts you to the risk of personal injury or death.Warning

Alerts you to the risk of personal injury from a laser.Laser warning

Indicates helpful information.Tip

Alerts you to a recommended use or implementation.Best practice

Table 2 on page xiii defines the text and syntax conventions used in this guide.

Table 2: Text and Syntax Conventions

ExamplesDescriptionConvention

Fixed-width text like this

Italic text like this

Represents text that you type.Bold text like this

Represents output that appears on the terminal screen.

Introduces or emphasizes important

•

new terms.

Identifies guide names.

•

Identifies RFC and Internet draft

•

titles.

To enter configuration mode, type the configure command:

user@host> configure

user@host> show chassis alarms

No alarms currently active

A policy term is a named structure

•

that defines match conditions and actions.

Junos OS CLI User Guide

•

RFC 1997, BGP Communities

•

Attribute

Table 2: Text and Syntax Conventions (continued)

xiv

ExamplesDescriptionConvention

Italic text like this

Text like this

< > (angle brackets)

| (pipe symbol)

Represents variables (options for which you substitute a value) in commands or configuration statements.

Represents names of configuration statements, commands, files, and directories; configuration hierarchy levels; or labels on routing platform components.

variables.

Indicates a choice between the mutually exclusive keywords or variables on either side of the symbol. The set of choices is often enclosed in parentheses for clarity.

Configure the machine’s domain name:

[edit] root@# set system domain-name

domain-name

To configure a stub area, include

•

the stub statement at the [edit protocols ospf area area-id]

hierarchy level.

The console port is labeled

•

CONSOLE.

stub <default-metric metric>;Encloses optional keywords or

broadcast | multicast

(string1 | string2 | string3)

# (pound sign)

[ ] (square brackets)

Indention and braces ( { } )

; (semicolon)

GUI Conventions

Indicates a comment specified on the same line as the configuration statement to which it applies.

Encloses a variable for which you can substitute one or more values.

Identifies a level in the configuration hierarchy.

Identifies a leaf statement at a configuration hierarchy level.

rsvp { # Required for dynamic MPLS only

community name members [ community-ids ]

[edit] routing-options {

static {

route default {

nexthop address; retain;

}

Table 2: Text and Syntax Conventions (continued)

ExamplesDescriptionConvention

Bold text like this

> (bold right angle bracket)

Represents graphical user interface (GUI) items you click or select.

Separates levels in a hierarchy of menu selections.

In the Logical Interfaces box, select

•

All Interfaces.

To cancel the configuration, click

•

Cancel.

In the configuration editor hierarchy, select Protocols>Ospf.

Documentation Feedback

We encourage you to provide feedback so that we can improve our documentation. You can use either of the following methods:

Online feedback system—Click TechLibrary Feedback, on the lower right of any page on the Juniper

•

Networks TechLibrary site, and do one of the following:

Click the thumbs-up icon if the information on the page was helpful to you.

•

Click the thumbs-down icon if the information on the page was not helpful to you or if you have

•

suggestions for improvement, and use the pop-up form to provide feedback.

E-mail—Send your comments to techpubs-comments@juniper.net. Include the document or topic name,

•

URL or page number, and software version (if applicable).

Requesting Technical Support

Technical product support is available through the Juniper Networks Technical Assistance Center (JTAC). If you are a customer with an active Juniper Care or Partner Support Services support contract, or are

covered under warranty, and need post-sales technical support, you can access our tools and resources online or open a case with JTAC.

JTAC policies—For a complete understanding of our JTAC procedures and policies, review the JTAC User

•

Guide located at https://www.juniper.net/us/en/local/pdf/resource-guides/7100059-en.pdf.

Product warranties—For product warranty information, visit https://www.juniper.net/support/warranty/.

•

JTAC hours of operation—The JTAC centers have resources available 24 hours a day, 7 days a week,

•

365 days a year.

Self-Help Online Tools and Resources

For quick and easy problem resolution, Juniper Networks has designed an online self-service portal called the Customer Support Center (CSC) that provides you with the following features:

Find CSC offerings: https://www.juniper.net/customers/support/

•

Search for known bugs: https://prsearch.juniper.net/

•

xvi

Find product documentation: https://www.juniper.net/documentation/

•

Find solutions and answer questions using our Knowledge Base: https://kb.juniper.net/

•

Download the latest versions of software and review release notes:

•

https://www.juniper.net/customers/csc/software/

Search technical bulletins for relevant hardware and software notifications:

•

https://kb.juniper.net/InfoCenter/

Join and participate in the Juniper Networks Community Forum:

•

https://www.juniper.net/company/communities/

Create a service request online: https://myjuniper.juniper.net

•

To verify service entitlement by product serial number, use our Serial Number Entitlement (SNE) Tool:

https://entitlementsearch.juniper.net/entitlementsearch/

Creating a Service Request with JTAC

You can create a service request with JTAC on the Web or by telephone.

Visit https://myjuniper.juniper.net.

•

Call 1-888-314-JTAC (1-888-314-5822 toll-free in the USA, Canada, and Mexico).

•

For international or direct-dial options in countries without toll-free numbers, see

https://support.juniper.net/support/requesting-support/.

CHAPTER

Overview

EX4600 System Overview | 18

EX4600 Chassis | 22

EX4600 Cooling System | 35

EX4600 Power System | 41

EX4600 System Overview

IN THIS SECTION

EX4600 Switch Hardware Overview | 18

EX4600 Switch Models | 21

Understanding Redundancy of EX4600 Switch Components and Functionality | 22

EX4600 Switch Hardware Overview

IN THIS SECTION

Benefits of the EX4600 Switch | 19

EX4600 Hardware | 19

System Software | 20

The Juniper Networks EX4600 Ethernet switch is a highly versatile, second generation solution for campus environments. The EX4600 can be deployed in these environments:

Campus distribution

•

Small campus core

•

Top-of-rack in small, low -density data centers

•

Data center distribution in small, low -density data centers

•

In addition to operating as a standalone switch, the EX4600 switch can act as a member switch in a non-mixed Virtual Chassis, a Virtual Chassis composed entirely of EX4600 switches, as well as participate as member switches in a mixed Virtual Chassis with EX4300 switches. The switch offers a flexible configuration of high-performance 10-gigabit and 40-gigabit ports to add higher port densities, additional scalability, and improved latency to the EX Series of switches.

Benefits of the EX4600 Switch

Compact solution—The EX4600 switch supports up to 72 10-Gigabit Ethernet ports in a 1 rack unit (1 U) chassis.

Intelligent buffer management—EX4600 switches have a total of 12 MB shared buffers. While 25 percent of the total buffer space is dedicated, the rest is shared among all ports and is user configurable. The intelligent buffer mechanism in the EX4600 effectively absorbs traffic bursts while providing deterministic performance, significantly increasing performance over static allocation.

Energy efficiency—The 10-Gigabit Ethernet ports consume less than five watts, thereby offering a low power solution for top-of-rack, end-of-row, and distribution deployments.

EX4600 Hardware

The EX4600 switch is a compact 1 U model that provides wire-speed packet performance, very low latency, and a rich set of Layer 2 and Layer 3 features. In addition to a high-throughput Packet Forwarding Engine, the performance of the control plane running on the EX4600 model is enhanced by the 1.5 -GHz dual-core Intel CPU with 8 GB of memory and 32 GB of solid-state drive (SSD) storage.

The port panel of the EX4600 features 24 fixed small form-factor pluggable (SFP) or SFP+ access ports and 4 fixed quad SFP+ (QSFP+) high-speed uplinks.

Figure 1: EX4600 Port Panel with Expansion Bays

In addition, the switch has two module bays where you can install optional expansion modules. The EX4600 switch supports two expansion modules to increase port density:

QFX-EM-4Q–Adds four additional QSFP+ ports to the chassis. When fully populated with QFX-EM-4Q

•

expansion modules, the EX4600 is equivalent to one with 72 interfaces (24 + 16 + 16 + 16). See

Figure 2 on page 20.

Figure 2: QFX-EM-4Q Expansion Module

EX4600-EM-8F–Adds a total of eight additional SFP+ ports to the chassis. When fully populated with

•

EX4600-EM-8F expansion modules, the EX4600 is equivalent to one with 56 interfaces (24 + 16 + 8 +

8). See Figure 3 on page 20.

Figure 3: EX4600-EM-8F Expansion Module

The EX4600 switch can be used as:

A standalone switch.

•

A primary, backup, or linecard member in a Virtual Chassis with EX4600 switches or EX4300 switches.

•

When in a mixed Virtual Chassis consisting of EX4600 switches and EX4300 switches, the EX4600 switches can be the primary, backup, or in the linecard role, while the EX4300 switches must be in the linecard role. An EX4600 Virtual Chassis enables you to interconnect up to 10 switches into one logical device and manage the device as a single chassis. An EX4600 Virtual Chassis is cabled in a ring topology.

In a mixed Virtual Chassis of EX4600 and EX4300 switches, the Junos OS release dictates whether the EX4600 is best used in the primary role. For Junos OS releases between 13.2X50-D10 and 14.1X53-D25, use the use the EX4300 as a primary and backup RE in the Virtual Chassis. For Junos OS Release

14.1X53-D25 and later, the EX4600 is fully supported as the primary in a mixed Virtual Chassis of EX4600 and EX4300.

System Software

EX Series switches run the Junos operating system (OS), which provides Layer 2 and Layer 3 switching, routing, and security services. An EX4600 switch ships with Junos OS installed on it. The same Junos OS code base that runs on EX4600 switches also runs on all Juniper Networks QFX Series devices, M Series, MX Series, and T Series routers.

You manage the switch by using the Junos OS CL), which is accessible through the console and out-of-band management ports on the switch.

All models of the EX4600 run on Junos OS Release 13.2X51-D25 or later.

EX4600 Switch Models

The EX4600 switches have a base configuration of 24 small form-factor pluggable plus (SFP+) ports and 4 quad small-form-factor pluggable (QSFP+) ports. You can increase the number of ports by using expansion modules. All EX4600 switches, except the EX4600-40F-S switch, ship with two power supplies and five fans installed by default. Expansion modules are optional components that must be separately ordered.

Table 3 on page 21 lists the EX4600 switch configurations.

Table 3: EX4600 Switches

Number of Expansion Modules SupportedPortsProduct Number

Power Supply

Airflow

Air In (FRU-to-port)AC224 SFP+ and 4 QSFP+EX4600-40F-AFI

AC224 SFP+ and 4 QSFP+EX4600-40F-AFO

DC224 SFP+ and 4 QSFP+EX4600-40F-DC-AFO

224 SFP+ and 4 QSFP+EX4600-40F-S

Order PSUs separately

Air Out (port-to-FRU)

Air In (FRU-to-port)DC224 SFP+ and 4 QSFP+EX4600-40F-DC-AFI

Air Out (port-to-FRU)

Fan modules are not shipped by default.

Order fan modules separately

CAUTION: Do not mix:

AC and DC power supplies in the same chassis.

•

Power supplies with different airflow labels (AFI) and (AFO) in the same chassis.

•

Fan modules with different airflow labels (AIR INI) and (AIR OUT) in the same chassis.

•

Power supplies and fan modules with different airflow labels (AIR INI) and AIR OUT)

•

or AFI and AFO in the same chassis.

Understanding Redundancy of EX4600 Switch Components and Functionality

The following hardware components provide redundancy on an EX4600 switch:

Power supplies—The EX4600 switch can operate with one power supply. However, all EX4600 switches,

•

except the EX4600-40F-S switch, ship with two power supplies preinstalled for redundancy. Each power supply provides power to all components in the switch. Installing two power provides full power redundancy to the switch. If one power supply fails or is removed, the second power supply balances the electrical load without interruption.

Cooling system—All EX4600 switches, except the EX4600-40F-S ship with five fan modules installed.

•

If a fan module fails and leads to the overheating of the chassis, alarms occur and the switch might shut down.

EX4600 Chassis

IN THIS SECTION

Chassis Physical Specifications for an EX4600 Switch | 23

Field-Replaceable Units in an EX4600 Switch | 23

Port Panel of an EX4600 Switch | 24

Access Port and Uplink Port LEDs on an EX4600 Switch | 25

Management Panel of an EX4600 Switch | 28

Chassis Status LEDs on an EX4600 Switch | 30

Expansion Modules for the EX4600 | 32

Chassis Physical Specifications for an EX4600 Switch

The EX4600 switch chassis is a rigid sheet-metal structure that houses the hardware components.

Table 4 on page 23 summarizes the physical specifications of the EX4600 chassis.

Table 4: Physical Specifications for the EX4600 Switch Chassis

WeightDepthWidthHeightProduct Number

20.48 in. (4.37 cm)17.36 in. (44.1 cm)1.72 in. (4.3 cm)EX4600

With power supplies and fan modules installed: 21.7lbs ( 9.84 kg)

Field-Replaceable Units in an EX4600 Switch

Field-replaceable units (FRUs) are components that you can replace at your site. The EX4600 switch FRUs are hot-insertable and hot-removable: you can remove and replace one of them without powering off the switch or disrupting the switching function. FRU types are:

Power supplies

•

Fan modules

•

Optical transceivers

•

Expansion modules

•

CAUTION: Replace a failed power supply with a blank panel or a new power supply

within one minute of removal to prevent chassis overheating. The switch continues to operate with only one power supply running. Replace a failed fan module with a new fan module within one minute of removal to prevent chassis overheating. Do not operate the switch for more than one minute after a fan module or power supply fails.

Table 5 on page 24 lists the FRUs for the EX4600 switch and actions to take before removing them.

Table 5: FRUs in a EX4600 Switch

Required ActionFRU

Power supplies

Fan modules

Optical transceivers

Expansion modules

None, if two power supplies are installed as recommended. If only one power is installed, you must power down the switch. See “Removing a

Power Supply from an EX4600 Switch” on page 103.

None. See “Removing a Fan Module from an EX4600 Switch” on page 100 for details.

None. We recommend that you disable the interface using the set interfaces interface-name disable command before you remove the transceiver. See

“Disconnect a Fiber-Optic Cable” on page 121.

None. See “Removing an Expansion Module from an EX4600 Switch” on

page 107.

NOTE: If you have a Juniper Care service contract, register any addition, change, or upgrade of

hardware components at https://www.juniper.net/customers/support/tools/updateinstallbase/ . Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.

SEE ALSO

Installing and Removing EX4600 Switch Hardware Components | 124

Port Panel of an EX4600 Switch

The fixed portion of the port panel of the EX4600-40F switch supports up to a maximum of 40 logical 10 GbE ports. Twenty-four physical ports (0 through 23) support 10 Gbps small form-factor pluggable plus (SFP+) transceivers. These ports can be configured as access ports. See The Hardware Compatibility Tool for a list of supported transceivers. All 24 of these ports can be used for SFP+ transceivers or SFP+ direct attach copper (DAC) cables. You can use 1-Gigabit Ethernet SFP+ transceivers, 10-Gigabit Ethernet SFP+ transceivers, and SFP+ direct attach copper cables in any access port.

The remaining 16 logical ports are available for four 40 GbE ports (24 through 27) that support up to four quad small-form factor pluggable plus (QSFP+) transceivers. Each QSFP+ port can operate either as a

single 40 Gbps port or as a set of 4 independent 10 Gbps ports using QSFP+ breakout cables. The 40 GbE ports can be configured as either access ports or as uplinks. .

CAUTION: Do not install 1GbE copper transceivers (such as QFX-SFP-1GE-T) directly

above or below another 1GbE copper transceiver. Use only the top row or bottom row to avoid damage to the device caused by some types of copper transceivers when the transceivers are installed above or below each other. However, if you are using copper transceivers with the OEM part number FCLF8521P2BTL-J1 printed on the transceiver label, you can install the transceivers in any port with no restrictions. For devices that support 10GbE copper transceivers, there is no similar restriction.

Figure 4 on page 25 shows the port panel of an EX4600 switch.

Figure 4: EX4600 Switch Port Panel

3—1— 40 GbE ports (4)Electrostatic Discharge (ESD) terminal

4—2— Expansion module bays with cover panels (2)10 G ports (24)

Access Port and Uplink Port LEDs on an EX4600 Switch

The Link/Activity and Status LED configuration for an EX4600 switch uses bi-colored LEDs. The two figures in this topic show the location of those LEDs:

Figure 5 on page 26 shows the location of the LEDs on the SFP+ access ports on the EX4600 and

g050236

Bi-colored LEDs

•

Figure 6 on page 26 shows the location of the LEDs on the QSFP+ uplink ports on the EX4600.

Figure 5: LEDs on the SFP+ Ports

Figure 6: LEDs on the QSFP+ Ports

The LED in Figure 5 on page 26 labeled Link/Activity indicate link activity or a fault. The LED labeled Status in indicates transceiver presence.

Table 6 on page 27 describes how to interpret the SFP+ port LEDs.

Table 6: Network Port LEDs on SFP+ Ports on an EX4600 Switch

DescriptionStateColorLED

OffUnlitLink/Activity

BlinkingGreen

On steadilyGreen

The port is administratively disabled, there is no power, the link is down, or there is a fault.

A link is established, but there is no link activity.On steadilyGreen

A link is established, and there is link activity.Blinking

The beacon is enabled on the port.BlinkingAmber

The link is down.OffUnlitStatus

The beacon function is enabled on the port.BlinkingAmber

A 1-Gigabit Ethernet transceiver is installed in the port and the link is established.

A 10-Gigabit Ethernet transceiver is installed in the port and link is established.

As shown in Figure 6 on page 26, there are four bi-color LEDs for each QSFP+ port. The first LED is used and the remaining LEDs are not used when the interface is configured for 40-Gigabit Ethernet and connected to a QSFP+ transceiver. All four LEDs are used when the interface is configured for 10-Gigabit Ethernet and the port is connected using an optical split cable or a copper DACBO cable. Table 7 on page 27 describes how to interpret the QSFP+ LEDs.

Table 7: Network Port LEDs on QSFP+ Ports on an EX4600 Switch

DescriptionStateColor

OffUnlit

The port is administratively disabled, there is no power, the link is down, or there is a fault.

NOTE: When configured for 10-Gigabit Ethernet, the LED

remains unlit only if all four of the 10-Gigabit Ethernet SFP+ breakout links are down.

Table 7: Network Port LEDs on QSFP+ Ports on an EX4600 Switch (continued)

DescriptionStateColor

On steadilyGreen

Blinking

BlinkingAmber

A link is established, but there is no link activity.

NOTE: When configured for 10-Gigabit Ethernet, the LED is

lit green when at least one of the four 10-Gigabit Ethernet SFP+ breakout links is established.

A link is established, and there is link activity.

NOTE: When configured for 10-Gigabit Ethernet, the LED is

lit green when at least one of the four 10-Gigabit Ethernet SFP+ breakout links is established.

All four LEDs blink to indicate the beacon function was enabled on the port.

Management Panel of an EX4600 Switch

The management panel of the EX4600 switch is located on the Field Replaceable Unit (FRU) side of the switch, as shown in Figure 7 on page 28. See Figure 8 on page 29 for management panel details.

Figure 7: EX4600 Switch, FRU Side with Fans Modules and Power Supplies Installed

3—1— Power supply unitsManagement panel

2—Fan modules

Figure 8: Management Panel Components

Status LEDs

Cage (socket for either 1 GbE copper SFP or fiber SFP)

3—Reset button, see caution statement below

4—1— RJ-45 console port (CON) and em0–RJ-45 (1000

Base-T) management Ethernet port (C0)

5—2— USB portem1–SFP management Ethernet port (C1)

CAUTION: Do not use the Reset button to restart the power sequence unless under

the direction of Juniper Networks Technical Assistance Center (JTAC).

The management panel consists of the following components:

Status LEDs

•

ALM (Alarm or beacon)

•

Unlit indicates the switch is halted or that there is no alarm.

•

Red indicates a major alarm.

•

Amber indicates a minor alarm.

•

SYS (System)

•

Unlit indicates the switch is powered off or halted.

•

Solid green indicates that Junos OS for EX Series is loaded on the switch.

•

Blinking green indicates that the switch is a participating member in a Virtual Chassis.

•

MST (Primary) in a Virtual Chassis

•

Unlit indicates the switch is standalone or is a line card member in a Virtual Chassis.

•

Solid green indicates the switch is the primary in a Virtual Chassis.

•

Blinking green indicates the switch is the backup primary in a Virtual Chassis.

•

ID (Identification)

•

Unlit indicates the beacon feature is not enabled.

•

Blinking blue indicates the beacon feature is enabled. This feature is enabled using the request

•

chassis beacon command.

Switch model number

•

Management Ports C0 and C1

•

C0–Use the RJ-45 connectors for 10/100/1000 BaseT.

•

C1–Use the SFP connector for 1000 BaseX.

•

USB port for image updates.

•

Console port (RJ-45) to support RS-232 serial ports. The LEDs above the port indicate status and link.

•

Chassis Status LEDs on an EX4600 Switch

The EX4600 switch has four status LEDs on the field-replaceable unit (FRU) end of the chassis, next to the management ports (see Figure 9 on page 30).

Figure 9: Chassis Status LEDs on an EX4600 Switch

Status LEDs

3—1— RJ-45 console port (CON) and em0–RJ-45 (1000

Base-T) management Ethernet port (C0)

Cage (socket for either 1 GbE copper SFP or fiber SFP)

4—2— USB portem1–SFP management Ethernet port (C1)

CAUTION: Do not use the Reset button to restart the power sequence unless under

the direction of Juniper Networks Technical Assistance Center (JTAC).

Table 8 on page 31 describes the chassis status LEDs on an EX4600 switch, their colors and states, and

the status they indicate. You can view the colors of the three LEDs remotely through the CLI by issuing the operational mode command show chassis lcd.

Table 8: Chassis Status LEDs on an EX4600 Switch

DescriptionStateColorName

OffUnlitALM (Alarm or beacon)

On steadilyRed

On steadilyAmber

The switch is halted or there is no alarm.

A major hardware fault has occurred, such as a temperature alarm or power failure, and the switch has halted. Power off the EX4600 switch by setting the AC power source outlet to the OFF (O) position, or unplugging the AC power cords. Correct any voltage or site temperature issues, and allow the switch to cool down. Power on the EX4600 switch and monitor the power supply and fan LEDs to help determine where the error is occurring.

A minor alarm has occurred, such as a software error. Power off the EX4600 switch by setting the AC power source outlet to the OFF (O) position, or unplugging the AC power cords. Power on the EX4600 switch and monitor the status LEDs to ensure that Junos OS boots properly.

The switch is powered off or halted.OffUnlitSYS (System)

On steadilyGreen

Junos OS for EX Series is loaded on the switch.

The switch is standalone.OffUnlitMST (Primary)

Table 8: Chassis Status LEDs on an EX4600 Switch (continued)

DescriptionStateColorName

SEE ALSO

show chassis alarms

request chassis beacon

Expansion Modules for the EX4600

OffUnlitID (Identification)

BlinkingBlue

The beacon feature is not enabled on the switch. This feature is enabled using the request chassis beacon command.

The beacon feature is enabled on the switch. This feature is enabled using the request chassis beacon command.

IN THIS SECTION

EX4600-EM-8F | 33

QFX-EM-4Q | 34

The EX4600 switch has two bays on the port panel in which you can optionally install one or two expansion modules. The EX4600 supports the same two expansion modules as the QFX5100, which increase port density:

EX4600-EM-8F, which provides 8 additional 10-Gigabit Ethernet Enhanced Small Form-Factor Pluggable

•

(SFP+) ports.

QFX-EM-4Q, which provides 4 additional 40-Gigabit Quad SFP+ (QSFP+) ports.

•

The EX4600 is configured for the QFX-EM-4Q by default, but any combination of the two modules is supported. Expansion modules can be hot-inserted or hot-removed. However, when an EX4600-EM-8F is inserted instead of the default QFX-EM-4Q, the new configuration causes the interfaces to temporarily

go down. Likewise when an EX4600-EM-8F is running on the EX4600 and it is swapped with a QFX-EM-4Q, the interfaces temporarily go down, which can cause a short disruption in traffic.

NOTE: Expansion modules and transceivers are not shipped with the switch and must be ordered

separately.

EX4600-EM-8F

The EX4600-EM-8F, provides 8 additional 10-Gigabit Ethernet SFP+ ports or 8 additional 1-Gigabit SFP ports to one of the bays in the EX4600 switch. Figure 10 on page 33 shows the ports and LEDs on the expansion module.

CAUTION: Copper SFP transceivers (1000BASE-T) are restricted to the top four ports

or the bottom four ports; fiber SFP transceivers (1000BASE-X) can be used in any of the eight ports. Attempting to stack copper SFP transceivers causes internal damage to the module.

Figure 10: EX4600-EM-8F Faceplate and LEDs

2—1— SFP+ port LEDsExpansion module status LED

When the expansion module is inserted into the expansion bay, the chassis detects the additional ports, recognizes them as 10GbE ports, and lights the Status LED.

Table 9 on page 34 describes the Status LED on the EX4600-EM-8F.

Table 9: EX4600-EM-8F Status LED

DescriptionStateLED

UnlitST

The expansion module is offline.

•

The chassis is powered off.

•

The expansion module is online and functioning normally.Green

•

QFX-EM-4Q

The QFX-EM-4Q, provides 4 additional 40-Gigabit Ethernet QSFP+ ports to one of the bays in the EX4600 switch. Port 0 and port 2 can be used for port channelization by configuring the system mode for 104 port mode.

Figure 11 on page 34 shows the QFX-EM-4Q ports and LEDs.

Figure 11: QFX-EM-4Q Faceplate and LEDs

2—1— QSFP+ port LEDsExpansion module status LED

When the expansion module is inserted into the expansion bay, the chassis detects the additional ports, recognizes them as 40 GbE ports, and lights the Status LED.

Table 10 on page 34 describes the Status LED on the QFX-EM-4Q expansion module.

Table 10: Expansion Module Status LED

DescriptionStateLED

UnlitST

The expansion module is offline.

•

The chassis is powered off.

•

The expansion module is online and functioning normally.Green

•

EX4600 Cooling System

IN THIS SECTION

Cooling System and Airflow in an EX4600 Switch | 35

Fan Module LED on an EX4600 Switch | 40

Cooling System and Airflow in an EX4600 Switch

IN THIS SECTION

Fan Modules | 36

Do Not Install Components with Different Airflow or Wattage in the Switch | 38

Fan Module Status | 39

The cooling system in an EX4600 switch consists of five fan modules and a single fan in each power supply. The switch can be set up to work in one of two airflow directions:

Airflow In–Air enters the switch through the vents in the field-replaceable units (FRUs)

•

Airflow Out–Air enters the switch through the vents in the port panel.

•

All EX4600 switches, except the EX4600-40F-S, are shipped with five fan modules and two power supplies. Order fans for the EX4600-40F-S separately.

CAUTION: Do not mix:

AC and DC power supplies in the same chassis.

•

Power supplies with different airflow labels (AFI) and (AFO) in the same chassis.

•

Fan modules with different airflow labels (AIR INI) and (AIR OUT) in the same chassis.

•

Power supplies and fan modules with different airflow labels (AIR INI) and AIR OUT)

•

or AFI and AFOin the same chassis.

Fan Modules

The fan modules in EX4600 switches are hot-insertable and hot-removable field-replaceable units (FRUs). These fan modules are designed for one of the two available airflow directions airflow in (AIR IN) or airflow out (AIR IN)) and are the same fan modules used in the QFX5100 switches. Some modules are also color-coded for the indication of the airflow direction. The fan modules are installed in the fan module slots on the FRU end of the switch, next to the power supplies. The fan module slots are numbered 0 through 4 from left to right. Each slot has a fan icon next to it.

Figure 12 on page 36 shows the fan module for the EX4600 switch.

Figure 12: Fan Module for EX4600 Switches

You remove and replace a fan module from the FRU end of the chassis. The switch continues to operate for a limited period of time (30 seconds) during the replacement of the fan module without thermal shutdown.

NOTE: All fan modules must be installed for optimal operation of the switch.

The fan modules are available in two product SKUs that have different airflow directions—FRU-to-port airflow, indicated on some units by the azure blue color and the label AIR IN , or port-to-FRU, indicated by the gold color and the label AIR OUT . On legacy switches or switches with LCDs, this airflow is also called front-to-back and back-to-front. Table 11 on page 37 lists the available fan module product SKUs and the direction of airflow in them:

Table 11: Fan Modules for EX4600 Switches

Airflow DiagramFan Module

Label on the Fan Module

AIR INFigure13onpage38QFX5100-FAN-AFI

AIR OUTFigure 14onpage38QFX5100-FAN-AFO

Color of Fan Module

Juniper azure blue

Juniper gold

Direction of Airflow in the Fan Module

FRU-to-port, that is, air enters from the FRUs; air exhausts from the vents in the port panel (also known as back-to-front airflow).

Port-to-FRU, that is, air enters through vents on the port panel; air exhausts out the FRUs (also known as front-to-back airflow).

Power Supplies

You must install only power supplies that have AFI labels or that are Juniper azure blue, in switches in which the fan modules have AIR IN labels or that are Juniper azure blue..

You must install only power supplies that have AFO labels or that are Juniper gold in switches in which the fan modules have

AIR OUT

labels or that are Juniper gold.

In data center deployments, position the switch in such a manner that the AIR IN labels on switch components are next to the cold aisle, and AIR OUT labels on switch components are next to the hot aisle.

Figure 13: Air In Airflow Through EX4600 Switch Chassis

Figure 14: Air Out Airflow Through EX4600 Switch Chassis

Do Not Install Components with Different Airflow or Wattage in the Switch

Do not mix power supplies with different airflow labels (AFI and AFO) and fan modules with different airflow labels (AIR IN and AIR OUT ) in the same chassis. If the fan modules have AIR IN labels, the power supplies must also have AFI labels; if the fan modules have AIR OUT labels, the power supplies must also have AFI labels. Azure blue and gold modules may not be mixed.

Mixing components with different airflow directions in the same chassis hampers the performance of the cooling system of the switch and leads to overheating of the chassis.

CAUTION: The system raises an alarm if a fan module fails or if the ambient

temperature inside the chassis rises above the acceptable range. If the temperature inside the chassis rises above the threshold temperature, the system shuts down automatically.

Do not mix fans with different wattage. Only use the replacement fans that are designed for use with your EX4600. See Table 11 on page 37 for the correct part number for your switch product SKU.

CAUTION: Do not mix AC and DC power supplies in the same chassis. Do not mix

power supplies with different wattages in the same chassis.

However if you need to convert an EX4600 switch to have a different airflow, you can change the airflow pattern. To convert an AIR IN product SKU to an AIR OUT product SKU or an AIR OUT product SKU to a AIR IN product SKU, you must replace all of the fans and power supplies at one time to use the new direction. The system raises an alarm when the system is converted, which is normal.

Fan Module Status

You can check the status of fans through the show system alarms command or by looking at the LEDs next to each fan module.

Each switch has a Status LED (labeled ST) for each fan module on the left side of the corresponding fan module slot. It indicates the status of all the fan modules. Table 12 on page 39 describes the Status LED on the fan module in an EX4600 switch.

Table 12: Fan Module LED

DescriptionLED State

Solid Green

Blinking Amber

The individual fan module is present. After the hardware senses the fan module, software ensures the airflow is consistent with the other fan modules and that it is functioning correctly.

Indicates one of the following:

The fan module is not present.

•

The airflow direction is not consistent among the modules.

•

The fan module is not functioning normally.

•

Under normal operating conditions, the fan modules operate at a moderate speed. Temperature sensors in the chassis monitor the temperature within the chassis.

The system raises an alarm if a fan module fails or if the ambient temperature inside the chassis rises above

0 1 2 3 4

the acceptable range. If the temperature inside the chassis rises above the threshold temperature, the system shuts down automatically.

SEE ALSO

Clearance Requirements for Airflow and Hardware Maintenance for an EX4600 Switch | 64

Fan Module LED on an EX4600 Switch

Figure 15 on page 40 shows the location of the LED next to the fan module.

Figure 15: Fan Module LED in an EX4600 Switch

1—Fan LED

Table 13 on page 40 describes the function of the fan tray LED.

Table 13: Fan Tray LED in an EX4600 Switch

On steadilyGreenFan

BlinkingAmber

DescriptionStateColorName

The fan module is operating normally. The system has verified that the module is engaged, that the airflow is in the correct direction, and that the fan is operating correctly.

An error has been detected in the fan module. Replace the fan module as soon as possible. Either the fan has failed or it is seated incorrectly. To maintain proper airflow through the chassis, leave the fan module installed in the chassis until you are ready to replace it.

EX4600 Power System

IN THIS SECTION

AC Power Supply in an EX4600 Switch | 41

AC Power Supply LEDs on an EX4600 Switch | 43

AC Power Specifications for an EX4600 Switch | 44

AC Power Cord Specifications for an EX4600 Switch | 45

DC Power Supply in an EX4600 Switch | 46

DC Power Supply LEDs in EX4600 Switches | 48

DC Power Specifications for an EX4600 Switch | 50

Grounding Cable and Lug Specifications for an EX4600 Switch | 50

AC Power Supply in an EX4600 Switch

Except for the EX4600-40F-S switch, the EX4600 is shipped from the factory with two power supplies pre-installed. Each power supply is a hot-removable and hot-insertable field-replaceable unit (FRU) when the second power supply is installed and running. You can install replacement power supplies in the two slots next to the fan modules without powering off the switch or disrupting the switching function.

The AC power supply is 650 W. It is the same power supply used in Juniper Networks QFX5100 switches.

CAUTION: Do not mix power supplies with different airflow or different wattage. The

system raises an alarm when a power supply having a different airflow or wattage is inserted into the chassis.

See Figure 16 on page 42 for an example of the power supply.

Figure 16: AC Power Supply in EX4600 Switches

g050255

1 2

3—1— AC appliance inletHandle

4—2— Ejector leverSecurity latch

The power supply provides FRU-to-port or port-to-FRU airflow depending on the product SKU you purchase. On legacy switches, or switches with an LCD, this airflow is called back-to-front and front-to-back. The power supplies either have labels on the handles that indicate the direction of airflow or they have color-coded handles with a fan icon. See Figure 17 on page 42 for an example of the power supply. Either a power supply has the label AFI or a blue handle, which denotes FRU-to-port airflow. A power supply with the label AFO or a gold-colored handle denotes port-to-FRU airflow.

Figure 17: Power Supply Handle Detail

1—Fan icon on handle

CAUTION: Verify that the airflow direction on the power supply handle matches the

direction of airflow in the chassis. Ensure that each power supply you install in the chassis has the same airflow direction. If you install power supplies with two different airflow directions, Junos OS raises an alarm, and the fault ALM LED blinks amber. If you need to convert the airflow pattern on a chassis, you must change out all the fans and power supplies at one time to use the new direction.

Table 14 on page 43 shows the different power supplies and their direction of airflow.

Table 14: Airflow Direction in EX4600 and QFX5100 AC Power Supplies

g050008

AC OK

DC OK

Fault

Color of Power Supply HandleDirection of AirflowProduct Number

Juniper azure blueFRU-to-portJPSU-650W-AC-AFI

QFXC01-PWRACI-650A

Juniper goldPort-to-FRUJPSU-650W-AC-AFO

To avoid electrical injury, carefully follow instructions in “Connecting AC Power to an EX4600 Switch” on

page 85.

SEE ALSO

Connecting AC Power to an EX4600 Switch | 85

AC Power Supply LEDs on an EX4600 Switch

Figure 18 on page 43 shows the location of the LEDs on the power supply.

Figure 18: AC Power Supply LEDs on an EX4600 Switch

Table 15 on page 44 describes the LEDs on the AC power supplies.

Table 15: AC Power Supply LEDs on a EX4600 Switch

DescriptionStateColorLED

OffUnlitAC OK

OffUnlitDC OK

On steadilyAmberFault

The power supply is disconnected from power, or power is not coming into the power supply.

Power is coming into the power supply.On steadilyGreen

The power supply is disconnected from power, or the power supply is not sending out power correctly.

The power supply is sending out power correctly.On steadilyGreen

An error has been detected in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

NOTE: If the AC OK LED and the DC OK LED are unlit, either the AC power cord is not installed

properly or the power supply fuse has failed. If the AC OK LED is lit and the DC OK LED is unlit, the AC power supply is installed properly, but the power supply has an internal failure.

AC Power Specifications for an EX4600 Switch

Table 16 on page 44 describes the AC power specifications for an EX4600 switch.

Table 16: AC Power Specifications for an EX4600 Switch

SpecificationItem

Operating range: 100–240 VACAC input voltage

50–60 HzAC input line frequency

AC input current rating

Typical power consumption: 230 W

4.5 A at 100–120 VAC

•

2.0 A at 200–240 VAC

•

Table 16: AC Power Specifications for an EX4600 Switch (continued)

SpecificationItem

Maximum power consumption: 365 W

AC Power Cord Specifications for an EX4600 Switch

Detachable AC power cords are shipped with the chassis, if you include them as part of your order. The coupler is type C13 as described by International Electrotechnical Commission (IEC) standard 60320. The plug end of the power cord fits into the power source outlet that is standard for your geographical location.

NOTE: In North America, AC power cords must not exceed 4.5 meters (approximately 14.75 feet)

in length, to comply with National Electrical Code (NEC) Sections 400-8 (NFPA 75, 5-2.2) and 210-52 and Canadian Electrical Code (CEC) Section 4-010(3). The cords that can be ordered for the EX4600 switch are in compliance.

Table 17 on page 46 lists AC power cord specifications provided for each country or region.

Table 17: AC Power Cord Specifications

g021274

Switzerland, and United Kingdom)

GraphicJuniper Model NumberPlug StandardsElectrical SpecificationsCountry/Region

CBL-EX-PWR-C13-AUAS/NZ 3109-1996250 VAC, 10 A, 50 HzAustralia

CBL-EX-PWR-C13-CHGB 1002-1996250 VAC, 10 A, 50 HzChina

CBL-EX-PWR-C13-EUCEE (7) VII250 VAC, 10 A, 50 HzEurope (except Italy,

CBL-EX-PWR-C13-ITCEI 23-16/VII250 VAC, 10 A, 50 HzItaly

Japan

60 Hz

250 VAC, 10 A, 50 HzSwitzerland

EN 60320 C13

CBL-EX-PWR-C13-JPJIS C8303125 VAC, 12 A, 50 Hz or

CBL-EX-PWR-C13-USCAN/CSA No. 49-92125 VAC, 13 A, 60 HzNorth America

CBL-EX-PWR-C13-KRKSC 8305; K60884-1250 VAC, 10 A, 60 HzSouth Korea

CBL-EX-PWR-C13-SZSEV 1011 SEV 1991;

CBL-EX-PWR-C13-UKBS 1363/A250 VAC, 10 A, 50 HzUnited Kingdom

DC Power Supply in an EX4600 Switch

The DC power supply is 650 W with dual feeds for power resiliency. It is same power supply that is used in the Juniper Networks QFX5100 line of switches (see Figure 19 on page 47).

Figure 19: DC Power Supply in EX4600 and QFX5100 Switches

3—1— Ejector leverTerminal block

4—2— HandleESD grounding point

NOTE: The DC power supply in the switch has four terminals labeled V-, V-, V+, and V+ (see

Figure 20 on page 48) for connecting DC power source cables labeled positive (+) and negative (–).

Figure 20: DC Power Supply Faceplate in EX4600 Switches

5—1— ESD grounding pointFeed B input terminals

6—2— Fault LEDFeed A input terminals

7—3— Output LEDTerminal block

8—4— Input LEDEjector lever

To supply sufficient power, terminate the DC input wiring on a facility DC source that is capable of supplying a minimum of 7 A at –48 VDC.

To avoid electrical injury, carefully follow instructions in “Installing a Power Supply in an EX4600 Switch”

on page 105 and “Removing a Power Supply from an EX4600 Switch” on page 103.

SEE ALSO

Connecting DC Power to an EX4600 Switch | 88

DC Power Supply LEDs in EX4600 Switches

Figure 21 on page 49 shows the location of the LEDs on the DC power supply.

Figure 21: DC Power Supply Faceplate on an EX4600 Switch

3—1— Fault LEDInput LED

2—Output LED

CAUTION: The V+ terminals are shunted internally together, as are the V- terminals.

The same polarity terminal can be wired together from the same source to provide an additional current path in a higher power chassis. Do not connect the terminals to different sources.

Table 18 on page 49 describes the LEDs on the DC power supplies.

Table 18: DC Power Supply LEDs on an EX4600 Switch

OffUnlitIn

OffUnlitOut

On steadilyGreen

DescriptionStateColorLED

The power supply is disconnected from power, or power is not coming into the power supply.

Power is coming into the power supply.On steadilyGreen

The power supply is disconnected from power, or the power supply is not sending out power correctly.

The power supply is sending out power correctly.

Table 18: DC Power Supply LEDs on an EX4600 Switch (continued)

DescriptionStateColorLED

On steadilyAmberFault

An error has occurred in the power supply. Replace the power supply as soon as possible. To maintain proper airflow through the chassis, leave the power supply installed in the chassis until you are ready to replace it.

DC Power Specifications for an EX4600 Switch

Table 19 on page 50 describes the DC power specifications for DC product SKUs of the EX4600 switch.

Table 19: DC Power Specifications for an EX4600 Switch

SpecificationsItem

DC input voltage

Rated operating voltage: –48 VDC to -60 VDC

•

Operating voltage range: -40 VDC through –72 VDC

•

10 A maximumDC input current rating

300 WTypical power consumption

385 WMaximum power consumption

Grounding Cable and Lug Specifications for an EX4600 Switch

For installations that require a separate grounding conductor to the chassis, the switch must be adequately grounded before power is connected to ensure proper operation and to meet safety and electromagnetic interference (EMI) requirements. To ground an EX4600 switch, connect a grounding cable to earth ground and then attach it to the chassis grounding points.

WARNING: The switch is pluggable type A equipment installed in a restricted-access

location. It has a separate protective earthing terminal provided on the chassis in addition to the grounding pin of the power supply cord. This separate protective earthing terminal must be permanently connected to earth ground for installations that require a separate grounding conductor to the chassis.

CAUTION: Before switch installation begins, a licensed electrician must attach a cable

lug to the grounding cables that you supply. See “Connecting Earth Ground to an

EX4600 Switch” on page 84. A cable with an incorrectly attached lug can damage the

switch.

Before connecting the switch to earth ground, review the following information:

A protective earthing terminal bracket is provided in the accessory kit for connecting the switch to earth

•

ground. This L-shaped bracket attaches to the side of the EX4600 chassis through the mounting bracket, providing a protective earthing terminal for the switch.

The grounding lug required is a Panduit LCD10-10A-L or equivalent (not provided).. The grounding lug

•

should accommodates 14–10 AWG (2–5.3 mm²) stranded wire.

The grounding cable that you provide for a EX4600 must be 14 AWG (2 mm²), minimum 60° C wire, or

•

as permitted by the local code.

Ensure you have two SAE 10-32 washers and screws to attach the cable and bracket (not provided).

•

CHAPTER

Site Planning, Preparation, and

Specifications

Site Preparation Checklist for an EX4600 Switch | 53

EX4600 Site Guidelines and Requirements | 54

EX4600 Network Cable and Transceiver Planning | 64

EX4600 Management Cable Specifications and Pinouts | 72

Site Preparation Checklist for an EX4600 Switch

The checklist in Table 20 on page 53 summarizes the tasks you need to perform when preparing a site for EX4600 switch installation.

Table 20: Site Preparation Checklist

DatePerformed ByFor More InformationItem or Task

Environment

Verify that environmental factors such as temperature and humidity do not exceed switch tolerances.

Power

Measure the distance between external power sources and switch installation site.

Calculate the power consumption and requirements.

Rack or Cabinet

Verify that your rack or cabinet meets the minimum requirements for the installation of the switch.

Plan rack or cabinet location, including required space clearances.

“Environmental Requirements and Specifications for EX Series Switches” on page 55

“AC Power Specifications for an EX4600 Switch” on page 44

“Rack Requirements for an EX4600 Switch” on page 61

“Cabinet Requirements for an EX4600 Switch” on page 63

“Clearance Requirements for Airflow and Hardware Maintenance for an EX4600 Switch” on page 64

Secure the rack or cabinet to the floor and building structure.

Cables

Table 20: Site Preparation Checklist (continued)

DatePerformed ByFor More InformationItem or Task

Acquire cables and connectors:

Determine the number of cables needed

•

based on your planned configuration.

Review the maximum distance allowed for

•

each cable. Choose the length of cable based on the distance between the hardware components being connected.

Plan the cable routing and management.

“Determining Interface Support for an EX4600 Switch” on page 65

EX4600 Site Guidelines and Requirements

IN THIS SECTION

Environmental Requirements and Specifications for EX Series Switches | 55

General Site Guidelines | 60

Site Electrical Wiring Guidelines | 60

Rack Requirements for an EX4600 Switch | 61

Cabinet Requirements for an EX4600 Switch | 63

Clearance Requirements for Airflow and Hardware Maintenance for an EX4600 Switch | 64

Environmental Requirements and Specifications for EX Series Switches

The switch must be installed in a rack or cabinet housed in a dry, clean, well-ventilated, and temperature-controlled environment.

Ensure that these environmental guidelines are followed:

The site must be as dust-free as possible, because dust can clog air intake vents and filters, reducing the

•

efficiency of the switch cooling system.

Maintain ambient airflow for normal switch operation. If the airflow is blocked or restricted, or if the

•

intake air is too warm, the switch might overheat, leading to the switch temperature monitor shutting down the switch to protect the hardware components.

Table 21 on page 55 provides the required environmental conditions for normal switch operation.

Table 21: EX Series Switch Environmental Tolerances

Environment Tolerance

Switch or device SeismicTemperatureRelative HumidityAltitude

EX2200-C

EX2200 (except EX2200-C switches)

EX2300-C

No performance degradation up to 5,000 feet (1524 meters)

No performance degradation up to 10,000 feet (3048 meters)

No performance degradation up to 5,000 feet (1524 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32° F (0° C) through 104°

F (40° C) at altitudes up to

5,000 ft (1,524 m).

For information about extended temperature SFP transceivers supported on EX2200 switches, see

Pluggable Transceivers

Supported on EX2200 Switches.

Normal operation ensured in the temperature range 32° F (0° C) through 113°

F (45° C)

Normal operation ensured in the temperature range 32° F (0° C) through 104°

F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

Table 21: EX Series Switch Environmental Tolerances (continued)

Environment Tolerance

Switch or device SeismicTemperatureRelative HumidityAltitude

EX2300 (except EX2300-C switches)

EX3200

EX3300

EX3400

No performance degradation up to 13,000 feet (3962 meters) at 104° F (40° C) as per GR-63

No performance degradation up to 10,000 feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32° F (0° C) through 113°

F (45° C)

Normal operation ensured in the temperature range 32° F (0° C) through 113°

F (45° C)

Normal operation ensured in the temperature range 32° F (0° C) through 113°

F (45° C)

Normal operation ensured in the temperature range 32° F (0° C) through 113°

F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX4200

No performance degradation up to 10,000 feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32° F (0° C) through 113°

F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

Table 21: EX Series Switch Environmental Tolerances (continued)

Environment Tolerance

Switch or device SeismicTemperatureRelative HumidityAltitude

EX4300

The maximum thermal output for EX4300-48T is 423 BTU/hour and for EX4300-48P is 5844 BTU/hour.

EX4500

EX4300 switches except the EX4300-48MP model— No performance degradation up to 10,000 feet (3048 meters)

EX4300-48MP model— No performance degradation up to 6,000 feet (1829 meters)

No performance degradation up to 10,000 feet (3048 meters)

EX4300 switches except the EX4300-48MP model— Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

EX4300-48MP model— Normal operation ensured in the relative humidity range 5% through 90% (noncondensing)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 32° F (0° C) through 113°

F (45° C)

Normal operation ensured in the temperature range 32° F (0° C) through 113°

F (45° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX4550

No performance degradation up to 10,000 feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

EX4550-32F switches—

•

Normal operation ensured in the temperature range 32° F (0° C) through 113° F (45° C)

EX4550-32T switches—

•

Normal operation is ensured in the temperature range 32° F through 104° F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

Table 21: EX Series Switch Environmental Tolerances (continued)

Environment Tolerance

Switch or device SeismicTemperatureRelative HumidityAltitude

EX4600

EX4650

No performance degradation to 6,562 feet (2000 meters)

No performance degradation to 6,000 feet (1829 meters)

Normal operation ensured in the relative humidity range 5% through 90%, noncondensing

Short-term operation

•

ensured in the relative humidity range 5% through 93%, noncondensing

NOTE: As defined in

NEBS GR-63-CORE, Issue 4, short-term events can be up to 96 hours in duration but not more than 15 days per year.

Normal operation ensured in the relative humidity range 10% through 85% (condensing)

Normal operation

•

ensured in the temperature range 32° F (0° C) through 113° F (45° C)

Nonoperating storage

•

temperature in shipping container: – 40° F (–40° C) through 158° F (70° C)

Normal operation is ensured in the temperature range 32° F (0° C) through 104°

F (40° C)

Complies with Zone 4 earthquake requirements per NEBS GR-63-CORE, Issue 4.

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

EX6210

EX8208

EX8216

No performance degradation up to 10,000 feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation is ensured in the temperature range 32° F (0° C) through 104°

F (40° C)

Normal operation is ensured in the temperature range 32° F (0° C) through 104°

F (40° C)

Normal operation is ensured in the temperature range 32° F (0° C) through 104°

F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

Table 21: EX Series Switch Environmental Tolerances (continued)

Environment Tolerance

Switch or device SeismicTemperatureRelative HumidityAltitude

EX9204

EX9208

EX9214

No performance degradation up to 10,000 feet (3048 meters)

Normal operation ensured in the relative humidity range 5% through 90% (noncondensing)

Normal operation is ensured in the temperature range 32° F (0° C) through 104°

F (40° C)

Nonoperating storage temperature in shipping container: – 40° F (–40° C) to 158° F (70° C)

Normal operation is ensured in the temperature range 32° F (0° C) through 104°

F (40° C)

Nonoperating storage temperature in shipping container: – 40° F (–40° C) to 158° F (70° C)

Normal operation is ensured in the temperature range 32° F (0° C) through 104°

F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63.

EX9251

The maximum thermal output is 1705 BTU/hour (500 W).

No performance degradation up to 10,000 ft (3048 m)

Normal operation ensured in relative humidity range of 5% to 90%, noncondensing

Nonoperating storage temperature in shipping container: – 40° F (–40° C) through 158° F (70° C)

Normal operation ensured in temperature range of 32°

F (0° C) to 104° F (40° C)

Nonoperating storage temperature in shipping container: – 40° F (–40° C) to 158° F (70° C)

Complies with Telcordia Technologies Zone 4 earthquake requirements

Table 21: EX Series Switch Environmental Tolerances (continued)

Environment Tolerance

Switch or device SeismicTemperatureRelative HumidityAltitude

XRE200

No performance degradation up to 10,000 feet (3048 meters)

Normal operation ensured in the relative humidity range 10% through 85% (noncondensing)

Normal operation ensured in the temperature range 41° F (5° C) through 104°

F (40° C)

Complies with Zone 4 earthquake requirements as per GR-63, Issue 4.

NOTE: Install EX Series switches only in restricted areas, such as dedicated equipment rooms

and equipment closets, in accordance with Articles 110– 16, 110– 17, and 110– 18 of the National Electrical Code, ANSI/NFPA 70.

General Site Guidelines

Efficient device operation requires proper site planning and maintenance and proper layout of the equipment, rack or cabinet (if used), and wiring closet.

To plan and create an acceptable operating environment for your device and prevent environmentally caused equipment failures:

Keep the area around the chassis free from dust and conductive material, such as metal flakes.

•

Follow prescribed airflow guidelines to ensure that the cooling system functions properly and that

•

exhaust from other equipment does not blow into the intake vents of the device.

Follow the prescribed electrostatic discharge (ESD) prevention procedures to prevent damaging the

•

equipment. Static discharge can cause components to fail completely or intermittently over time.

Install the device in a secure area, so that only authorized personnel can access the device.

•

Site Electrical Wiring Guidelines

Table 22 on page 61 describes the factors you must consider while planning the electrical wiring at your

site.

WARNING: You must provide a properly grounded and shielded environment and use

electrical surge-suppression devices.

Avertissement Vous devez établir un environnement protégé et convenablement mis à la terre et utiliser des dispositifs de parasurtension.

Table 22: Site Electrical Wiring Guidelines

Site Wiring Factor

Guidelines

Signaling limitations

Radio frequency interference

Electromagnetic compatibility

If your site experiences any of the following problems, consult experts in electrical surge suppression and shielding:

Improperly installed wires cause radio frequency interference (RFI).

•

Damage from lightning strikes occurs when wires exceed recommended distances or pass between

•

buildings.

Electromagnetic pulses (EMPs) caused by lightning damage unshielded conductors and electronic

•

devices.

To reduce or eliminate RFI from your site wiring, do the following:

Use a twisted-pair cable with a good distribution of grounding conductors.

•

If you must exceed the recommended distances, use a high-quality twisted-pair cable with one

•

ground conductor for each data signal when applicable.

If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly from lightning or radio transmitters, seek expert advice.

Some of the problems caused by strong sources of electromagnetic interference (EMI) are:

Destruction of the signal drivers and receivers in the device

•

Electrical hazards as a result of power surges conducted over the lines into the equipment

•

Rack Requirements for an EX4600 Switch

EX4600 Switches are designed to be installed on four-post racks.

Rack requirements consist of:

Rack type

•

Mounting bracket hole spacing

•

Rack size and strength

•

Table 23 on page 62 provides the rack requirements and specifications for the EX4600 Switch.

Table 23: Rack Requirements for the EX4600 Switch

GuidelinesRack Requirement

Rack type

Mounting bracket hole spacing

Rack size and strength

Use a four-post rack that provides bracket holes or hole patterns spaced at 1 U (1.75 in. or 4.45 cm) increments and that meets the size and strength requirements to support the weight.

A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association.

The holes in the mounting brackets are spaced at 1 U (1.75 in. or 4.45 cm), so that the switch can be mounted in any rack that provides holes spaced at that distance.

Ensure that the rack complies with the standards for a 19-in. or 23-in. rack as defined

•

in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association.

A 600-mm rack as defined in the four-part Equipment Engineering (EE); European

•

telecommunications standard for equipment practice (document numbers ETS 300 119-1 through 119-4) published by the European Telecommunications Standards Institute.

The horizontal spacing between the rails in a rack that complies with this standard is usually wider than the device's mounting brackets, which measure 19 in. (48.26 cm) from outer edge to outer edge. Use approved wing devices to narrow the opening between the rails as required.

Ensure that the rack rails are spaced widely enough to accommodate the switch chassis’

•

external dimensions. The outer edges of the front-mounting brackets extend the width to 19 in. (48.26 cm).

The front and rear rack rails must be spaced between 23 in. (58.5 cm) and 30.25 in.

•

(76.8 cm) front-to-back.

The rack must be strong enough to support the weight of the switch.

•

Ensure that the spacing of rails and adjacent racks allows for proper clearance around

•

the switch and rack.

Rack connection to building structure

SEE ALSO

Secure the rack to the building structure.

•

If earthquakes are a possibility in your geographical area, secure the rack to the floor.

•

Secure the rack to the ceiling brackets as well as wall or floor brackets for maximum

•

stability.

Rack-Mounting and Cabinet-Mounting Warnings | 158

Cabinet Requirements for an EX4600 Switch

You can mount the EX4600 switch in a cabinet that contains a four-post 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D) published by the Electronics Industry

Association.

Cabinet requirements consist of:

Cabinet size and clearance

•

Cabinet airflow requirements

•

Table 24 on page 63 provides the cabinet requirements and specifications for the EX4600 switch.

Table 24: Cabinet Requirements for the EX4600 Switch

Cabinet size and clearance

Cabinet airflow requirements

GuidelinesCabinet Requirement

The minimum cabinet size for accommodating a EX4600 switch is 36 in. (91.4 cm) deep. Large cabinets improve airflow and reduce the chance of overheating.

When you mount the switch in a cabinet, ensure that ventilation through the cabinet is sufficient to prevent overheating.

Ensure that the cool air supply you provide through the cabinet adequately dissipates

•

the thermal output of the switch (or switches).

Ensure that the cabinet allows the chassis hot exhaust air to exit the cabinet without

•

recirculating into the switch. An open cabinet (without a top or doors) that employs hot air exhaust extraction from the top allows the best airflow through the chassis. If the cabinet contains a top or doors, perforations in these elements assist with removing the hot air exhaust.

The EX4600 fans exhaust hot air either through the vents on the port panel or through

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the fans and power supplies. Install the switch in the cabinet in a way that maximizes the open space on the FRU side of the chassis. This maximizes the clearance for critical airflow.

Route and dress all cables to minimize the blockage of airflow to and from the chassis.

•

Ensure that the spacing of rails and adjacent cabinets allows for the proper clearance

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around the switch and cabinet.

Clearance Requirements for Airflow and Hardware Maintenance for an

FRUs

Ports

Mounting bracket

17.36"

44.1 cm

20.48"

(52.02 cm)

Clearance required

for maintenance

Clearance required

for maintenance

g050277

19"

(48.2 cm)

24 " ( 6 0 .9 cm) 24 " ( 6 0 .9 cm)

EX4600 Switch

When planning the site for installing an EX4600 switch, you must allow sufficient clearance around the installed chassis (see Figure 22 on page 64).

Figure 22: Clearance Requirements for Airflow and Hardware Maintenance for a EX4600 Switch

For the cooling system to function properly, the airflow around the chassis must be unrestricted. See

•

“Cooling System and Airflow in an EX4600 Switch” on page 35 for more information about the airflow

through the chassis.

If you are mounting an EX4600 switch in a rack or cabinet with other equipment, ensure that the exhaust

•

from other equipment does not blow into the intake vents of the chassis.

Leave at least 24 in. (61 cm) both in front of and behind the EX4600 switch. For service personnel to

•

remove and install hardware components, you must leave adequate space at the front and back of the switch. NEBS GR-63 recommends that you allow at least 30 in. (76.2 cm) in front of the rack or cabinet and 24 in. (61 cm) behind the rack or cabinet.

EX4600 Network Cable and Transceiver Planning

IN THIS SECTION

Determining Interface Support for an EX4600 Switch | 65

Cable Specifications for QSFP+ Transceivers on EX4600 Series Switches | 66

Network Cable Specifications for EX4600 Switches | 68

Understanding EX Series Switches Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion | 68

Calculating the Fiber-Optic Cable Power Budget for EX Series Devices | 70

Calculating the Fiber-Optic Cable Power Margin for EX Series Devices | 70

Determining Interface Support for an EX4600 Switch

The 24 small form-factor pluggable (SFP) network ports on EX4600 switches support 10-Gigabit Ethernet transceivers and direct-attach copper (DAC) cables. The switch also supplies four quad small form-factor pluggable plus (QSFP+) ports for use as uplinks. These 40-Gigabit Ethernet ports support QSFP+ transceivers, QSFP+ DAC cables, and DAC breakout cables (DACBO). Each QSFP+ port on an EX4600 switch can be configured to operate as 10-Gigabit Ethernet interface by using a breakout cable or as a single 40-Gigabit Ethernet interface. The ports on an EX4600 switch are disabled by default. You enable a port through the CLI.

Figure 23 on page 65 shows the different ports available on the EX4600 switch.

Figure 23: Port Panel of EX4600

3—1— 40 GbE ports (4)Electrostatic discharge (ESD) terminal

4—2— Expansion module bays with cover panels (2)10 G ports (24)

You can find information about the optical transceivers supported on your Juniper device by using the Hardware Compatibility Tool. In addition to transceiver and connection type, the optical and cable characteristics–where applicable–are documented for each transceiver. The Hardware Compatibility Tool enables you to search by product, displaying all the transceivers supported on that device, or category, by interface speed or type. The list of supported transceivers for the EX4600 is located at

https://pathfinder.juniper.net/hct/product/#prd=EX4600.

CAUTION: If you face a problem running a Juniper Networks device that uses a

third-party optic or cable, the Juniper Networks Technical Assistance Center (JTAC) can help you diagnose the source of the problem. Your JTAC engineer might recommend that you check the third-party optic or cable and potentially replace it with an equivalent Juniper Networks optic or cable that is qualified for the device.

Cable Specifications for QSFP+ Transceivers on EX4600 Series Switches

The 40-Gigabit Ethernet QSFP+ transceivers that are used in EX Series switches use 12-ribbon multimode fiber crossover cables with socket MPO/UP, MPO/UPC, or MPO/APC connectors. The fiber can be either OM3 or OM4. These cables are not sold by Juniper Networks.

CAUTION: To maintain agency approvals, use only a properly constructed, shielded

cable.

TIP: Ensure that you order cables with the correct polarity. Vendors refer to these crossover

cables as key up to key up, latch up to latch up, Type B, or Method B. If you are using patch panels between two QSFP+, ensure that the proper polarity is maintained through the cable plant.

Table 25 on page 66 describes the signals on each fiber. Table 26 on page 67 shows the pin-to-pin

connections for proper polarity.

Table 25: QSFP+ MPO Cable Signals

SignalFiber

Tx0 (Transmit)1

Tx1 (Transmit)2

Tx2 (Transmit)3

Tx3 (Transmit)4

Unused5

Table 25: QSFP+ MPO Cable Signals (continued)

SignalFiber

Unused6

Unused7

Unused8

Rx3 (Receive)9

Rx2 (Receive)10

Rx1 (Receive)11

Rx0 (Receive)12

Table 26: QSFP+ MPO Fiber-Optic Crossover Cable Pinouts

PinPin

121

112

103

310

211

112

Network Cable Specifications for EX4600 Switches

EX4600 switches have interfaces that use various types of network cables.

Table 27 on page 68 lists the specifications for the cables that connect the console (CON) and management

(MGMT) ports to management devices.

NOTE: The EX4600 can be configured with SFP management ports that support 1000BASE-SX

transceivers.

Table 27: Cable Specifications for Switch-to-Management-Device Connections

Ports on EX4600 Switches

Cable Specification

Cable/Wire Supplied

Maximum Length

Switch Receptacle

Additional Information

RJ-45 Console (CON) port

Management (MGMT) Ethernet port (10/100/1000)

RS-232 (EIA-232) serial cable

Category 5 cable or equivalent suitable for 1000BASE-T operation

(2.13-meter) length RJ-45 patch cable and RJ-45 to DB-9 adapter

One 7-foot (2.13-meter) length RJ-45 patch cable

(100 meters)

RJ-457 ft (2.13 m)One 7-foot

RJ-45328 feet

Understanding EX Series Switches Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion

“Connect a Device to a Management Console Using an RJ-45 Connector” on page 93

“Connect a Device to a Network for Out-of-Band Management” on page 93

IN THIS SECTION

Signal Loss in Multimode and Single-Mode Fiber-Optic Cable | 69

Attenuation and Dispersion in Fiber-Optic Cable | 69

To determine the power budget and power margin needed for fiber-optic connections, you need to understand how signal loss, attenuation, and dispersion affect transmission. EX Series switches use various types of network cable, including multimode and single-mode fiber-optic cable.

Signal Loss in Multimode and Single-Mode Fiber-Optic Cable

Multimode fiber is large enough in diameter to allow rays of light to reflect internally (bounce off the walls of the fiber). Interfaces with multimode optics typically use LEDs as light sources. However, LEDs are not coherent light sources. They spray varying wavelengths of light into the multimode fiber, which reflects the light at different angles. Light rays travel in jagged lines through a multimode fiber, causing signal dispersion. When light traveling in the fiber core radiates into the fiber cladding (layers of lower refractive index material in close contact with a core material of higher refractive index), higher-order mode loss (HOL) occurs. Together, these factors reduce the transmission distance of multimode fiber compared to that of single-mode fiber.

Single-mode fiber is so small in diameter that rays of light reflect internally through one layer only. Interfaces with single-mode optics use lasers as light sources. Lasers generate a single wavelength of light, which travels in a straight line through the single-mode fiber. Compared to multimode fiber, single-mode fiber has a higher bandwidth and can carry signals for longer distances. It is consequently more expensive.

Exceeding the maximum transmission distances can result in significant signal loss, which causes unreliable transmission.

Attenuation and Dispersion in Fiber-Optic Cable

An optical data link functions correctly provided that modulated light reaching the receiver has enough power to be demodulated correctly. Attenuation is the reduction in strength of the light signal during transmission. Passive media components such as cables, cable splices, and connectors cause attenuation. Although attenuation is significantly lower for optical fiber than for other media, it still occurs in both multimode and single-mode transmission. An efficient optical data link must transmit enough light to overcome attenuation.

Dispersion is the spreading of the signal over time. The following two types of dispersion can affect signal transmission through an optical data link:

Chromatic dispersion, which is the spreading of the signal over time caused by the different speeds of

•

light rays.

Modal dispersion, which is the spreading of the signal over time caused by the different propagation

•

modes in the fiber.

For multimode transmission, modal dispersion, rather than chromatic dispersion or attenuation, usually limits the maximum bit rate and link length. For single-mode transmission, modal dispersion is not a factor. However, at higher bit rates and over longer distances, chromatic dispersion limits the maximum link length.

An efficient optical data link must have enough light to exceed the minimum power that the receiver requires to operate within its specifications. In addition, the total dispersion must be within the limits specified for the type of link in Telcordia Technologies document GR-253-CORE (Section 4.3) and International Telecommunications Union (ITU) document G.957.

When chromatic dispersion is at the maximum allowed, its effect can be considered as a power penalty in the power budget. The optical power budget must allow for the sum of component attenuation, power penalties (including those from dispersion), and a safety margin for unexpected losses.

Calculating the Fiber-Optic Cable Power Budget for EX Series Devices

To ensure that fiber-optic connections have sufficient power for correct operation, calculate the link's power budget when planning fiber-optic cable layout and distances to ensure that fiber-optic connections have sufficient power for correct operation. The power budget is the maximum amount of power the link can transmit. When you calculate the power budget, you use a worst-case analysis to provide a margin of error, even though all the parts of an actual system do not operate at the worst-case levels.

To calculate the worst-case estimate for fiber-optic cable power budget (PB) for the link:

1. Determine values for the link's minimum transmitter power (PT) and minimum receiver sensitivity (PR). For example, here, (PT) and (PR) are measured in decibels, and decibels are referred to one milliwatt (dBm).

PT= – 15 dBm

PR= – 28 dBm

NOTE: See the specifications for your transmitter and receiver to find the minimum transmitter

power and minimum receiver sensitivity.

2. Calculate the power budget (PB) by subtracting (PR) from (PT):

– 15 dBm – (–28 dBm) = 13 dBm

Calculating the Fiber-Optic Cable Power Margin for EX Series Devices

Calculate the link's power margin when planning fiber-optic cable layout and distances to ensure that fiber-optic connections have sufficient signal power to overcome system losses and still satisfy the minimum

input requirements of the receiver for the required performance level. The power margin (PM) is the amount of power available after attenuation or link loss (LL) has been subtracted from the power budget (PB).

When you calculate the power margin, you use a worst-case analysis to provide a margin of error, even though all the parts of an actual system do not operate at worst-case levels. A power margin (PM) greater

than zero indicates that the power budget is sufficient to operate the receiver and that it does not exceed the maximum receiver input power. This means the link will work. A (PM) that is zero or negative indicates

insufficient power to operate the receiver. See the specification for your receiver to find the maximum receiver input power.

Before calculating the power margin:

Calculate the power budget (see “Calculating the Fiber-Optic Cable Power Budget for EX Series Devices”

•

on page 70).

To calculate the worst-case estimate for the power margin (PM) for the link:

1. Determine the maximum value for link loss (LL) by adding estimated values for applicable link-loss factors—for example, use the sample values for various factors as provided in Table 28 on page 71 (here, the link is 2 km long and multimode, and the (PB) is 13 dBm):

Table 28: Estimated Values for Factors Causing Link Loss

Higher-order mode losses (HOL)

Modal and chromatic dispersion

Multimode—0.5 dBm

•

Single mode—None

•

Multimode—None, if product of

•

bandwidth and distance is less than 500 MHz/km

Single mode—None

•

0.5 dBmConnector

0.5 dBmSplice

Sample (LL) Calculation ValuesEstimated Link-Loss ValueLink-Loss Factor

0.5 dBm

•

0 dBm

•

0 dBm

•

0 dBm

•

This example assumes 5 connectors. Loss for 5 connectors:

(5) * (0.5 dBm) = 2.5 dBm

This example assumes 2 splices. Loss for two splices:

(2) * (0.5 dBm) = 1 dBm

Fiber attenuation

Multimode—1 dBm/km

•

Single mode—0.5 dBm/km

•

This example assumes the link is 2 km long. Fiber attenuation for 2 km:

(2 km) * (1.0 dBm/km) = 2 dBm

•

(2 km) * (0.5 dBm/km) = 1 dBm

•

Table 28: Estimated Values for Factors Causing Link Loss (continued)

NOTE: For information about the actual amount of signal loss caused by equipment and

other factors, see your vendor documentation for that equipment.

2. Calculate the (PM) by subtracting (LL) from (PB):

Sample (LL) Calculation ValuesEstimated Link-Loss ValueLink-Loss Factor

1 dBm1 dBmClock Recovery Module (CRM)

PB– LL = P

(13 dBm) – (0.5 dBm [HOL]) – ((5) * (0.5 dBm)) – ((2) * (0.5 dBm)) – ((2 km) * (1.0 dBm/km)) – (1 dB [CRM]) = P

13 dBm – 0.5 dBm – 2.5 dBm – 1 dBm – 2 dBm – 1 dBm = P

PM= 6 dBm

The calculated power margin is greater than zero, indicating that the link has sufficient power for transmission. Also, the power margin value does not exceed the maximum receiver input power. Refer to the specification for your receiver to find the maximum receiver input power.

EX4600 Management Cable Specifications and Pinouts

IN THIS SECTION

Cable Specifications for Console and Management Connections for the EX4600 | 73

USB Port Specifications for an EX Series Switch | 73

Console Port Connector Pinout Information | 74

RJ-45 Management Port Connector Pinout Information | 75

Cable Specifications for Console and Management Connections for the EX4600

Table 29 on page 73 lists the specifications for the cables that connect the QFX Series to a management

device.

NOTE: The QFX Series can be configured with SFP management ports that support 1000BASE-SX

transceivers.

Table 29: Cable Specifications for Console and Management Connections for the QFX Series

Port on QFX Series Device

Console port

Management port

RS-232 (EIA-232) serial cable

Category 5 cable or equivalent suitable for 1000BASE-T operation

One 7-foot (2.13-meter) length RJ-45 patch cable and RJ-45 to DB-9 adapter

One 7-foot (2.13-meter) length RJ-45 patch cable

Maximum LengthCable SuppliedCable Specification

(2.13 meters)

(100 meters)

Device Receptacle

RJ-457 feet

RJ-45328 feet

USB Port Specifications for an EX Series Switch

The following Juniper Networks USB flash drives have been tested and are officially supported for the USB port on all EX Series switches:

RE-USB-1G-S

•

RE-USB-2G-S

•

RE-USB-4G-S

•

CAUTION: Any USB memory product not listed as supported for EX Series switches

has not been tested by Juniper Networks. The use of any unsupported USB memory product could expose your EX Series switch to unpredictable behavior. Juniper Networks Technical Assistance Center (JTAC) can provide only limited support for issues related to unsupported hardware. We strongly recommend that you use only supported USB flash drives.

All USB flash drives used on EX Series switches must have the following features:

USB 2.0 or later.

•

Formatted with a FAT or MS-DOS file system.

•

If the switch is running Junos OS Release 9.5 or earlier, the formatting method must use a primary boot

•

record. Microsoft Windows formatting, by default, does not use a primary boot record. See the documentation for your USB flash drive for information about how your USB flash drive is formatted.

Console Port Connector Pinout Information

The console port on a Juniper Networks device is an RS-232 serial interface that uses an RJ-45 connector to connect to a console management device. The default baud rate for the console port is 9600 baud.

Table 30 on page 74 provides the pinout information for the RJ-45 console connector.

NOTE: If your laptop or desktop PC does not have a DB-9 plug connector pin and you want to

connect your laptop or desktop PC directly to a device, use a combination of the RJ-45 to DB-9 socket adapter and a USB to DB-9 plug adapter. You must provide the USB to DB-9 plug adapter.

Table 30: Console Port Connector Pinout Information

DescriptionSignalPin

Request to sendRTS Output1

Data terminal readyDTR Output2

Transmit dataTxD Output3

Signal groundSignal Ground4

Table 30: Console Port Connector Pinout Information (continued)

DescriptionSignalPin

Signal groundSignal Ground5

Receive dataRxD Input6

Data carrier detectCD Input7

CTS InputNC8

RJ-45 Management Port Connector Pinout Information

Table 31 on page 75 provides the pinout information for the RJ-45 connector for the management port

on Juniper Networks devices.

Table 31: RJ-45 Management Port Connector Pinout Information

DescriptionSignalPin

Transmit/receive data pair 1TRP1+1

Transmit/receive data pair 1TRP1—2

Transmit/receive data pair 2TRP2+3

Transmit/receive data pair 3TRP3+4

Transmit/receive data pair 3TRP3—5

Transmit/receive data pair 2TRP2—6

Transmit/receive data pair 4TRP4+7

Transmit/receive data pair 4TRP4—8

CHAPTER

Initial Installation and Configuration

Unpacking and Mounting an EX4600 Switch | 77

Connecting the EX4600 to Power | 83

Connecting the EX4600 to Management Devices | 92

Configuring Junos OS on the EX4600 | 96

Unpacking and Mounting an EX4600 Switch

IN THIS SECTION

Installing and Connecting an EX4600 Switch | 77

Unpacking an EX4600 Switch | 78

Mounting an EX4600 Switch in a Rack or Cabinet | 79

Installing and Connecting an EX4600 Switch

You can mount an EX4600 switch:

Flush with the front of a 19-in. four-post rack. Use the standard mounting brackets provided with the

•

switch for this configuration.

Recessed 2 in. (5 cm) from the front of a 19-in. four-post rack. Use the extension bracket provided in

•

the standard mounting kit for this configuration. Recessed mounting is primarily used in enclosed cabinets.

To install and connect an EX4600 switch:

1. Follow the instructions in “Unpacking an EX4600 Switch” on page 78.

2. Determine how the switch is to be mounted.

Flush or recessed mounted in a rack or cabinet, see “Mounting an EX4600 Switch in a Rack or Cabinet”

on page 79.

3. Follow the instructions in:

a. Connecting Earth Ground to an EX4600 Switch on page 84

b. “Connecting DC Power to an EX4600 Switch” on page 88 or Connecting AC Power to an EX4600

Switch on page 85

c. Register Products—Mandatory to Validate SLAs

d. Configuring Junos OS on the EX4600 on page 96

SEE ALSO

Rack Requirements for an EX4600 Switch | 61

Cabinet Requirements for an EX4600 Switch | 63

Clearance Requirements for Airflow and Hardware Maintenance for an EX4600 Switch | 64

Unpacking an EX4600 Switch

The EX4600 switch chassis is a rigid sheet-metal structure that houses the hardware components. A EX4600 switch is shipped in a cardboard carton, secured with foam packing material. The carton also contains an accessory box.

CAUTION: EX4600 switches are maximally protected inside the shipping carton. Do

not unpack the switch until you are ready to begin installation.

To unpack a EX4600 switch:

1. Move the shipping carton to a staging area as close to the installation site as possible, but where you have enough room to remove the system components.

2. Position the carton so that the arrows are pointing up.

3. Open the top flaps on the shipping carton.

4. Remove the accessory box and verify the contents against the inventory included in the box.

Table 32 on page 79 lists the inventory of components supplied with a EX4600 switch.

5. Pull out the packing material holding the switch in place.

6. Verify the chassis components received:

Two power supplies

•

Five fan modules

•

7. Save the shipping carton and packing materials in case you need to move or ship the switch later.

Table 32: Inventory of Components Supplied with an EX4600 Switch

QuantityComponent

1Chassis with five fan modules and two power supplies.

SEE ALSO

Mounting an EX4600 Switch in a Rack or Cabinet | 79 Installing and Connecting an EX4600 Switch | 77

Mounting an EX4600 Switch in a Rack or Cabinet

2Rear mounting blades

2Front mounting brackets

2Extension brackets

1RJ-45 cable and RJ-45 to DB-9 adapter

2Power cords

IN THIS SECTION

Before You Begin Rack Installation | 80

Four Post Procedure | 81

You can mount the EX4600 switch on a four post 19-in. rack or cabinet using the mounting kit provided with the device.

For four post rack or cabinet installations, the mounting kit contains two front mounting rails with two matching rear mounting blades. This configuration allows either end of the switch to be mounted flush with the rack and still be adjustable for racks with different depths.

The remainder of this topic uses “rack” to mean “rack or cabinet”. Space the front and rear rack rails between 23 in (58.5 cm) to 30.25 in (76.8 cm) front-to-back.

Before You Begin Rack Installation

Before you begin mounting an EX4600 switch in the rack or cabinet:

1. Ensure that you understand how to prevent electrostatic discharge (ESD) damage. See “Prevention of

Electrostatic Discharge Damage” on page 180.

2. Verify that the site meets the requirements described in “Site Preparation Checklist for an EX4600

Switch” on page 53.

3. Place the rack in its permanent location, allowing adequate clearance for airflow and maintenance, and secure it to the building structure.

4. Read “General Site Guidelines” on page 60, with particular attention to Chassis Lifting Guidelines for an EX4600 Switch.

5. Remove the switch from the shipping carton (see “Unpacking an EX4600 Switch” on page 78).

6. Ensure that you have the following parts and tools available to mount the switch in a rack:

ESD grounding strap (not provided).

•

Blades, rails, or brackets (provided).

•

For four-post installations:

•

One pair of rear mounting blades. These mounting blades support the rear of the chassis and

•

must be installed (provided).

One pair of front mounting rails. The mounting blades slide into the mounting rails to support

•

the switch (provided).

Twelve screws to secure the mounting rails to the chassis (provided).

•

Eight screws to secure the chassis and rear installation blades to the rack (not provided).

•

Appropriate screwdriver for the mounting screws (not provided).

•

Two power cords with plugs appropriate to your geographical location (provided).

•

RJ-45 cable and RJ-45 to DB-9 serial port adapter (provided).

•

Management host, such as a PC laptop, with a serial port (not provided).

•

Optional equipment: Grounding cable kit with bracket, lug, and three nuts with integrated washers.

WARNING: The EX4600 switch must be supported at all four corners. Mounting the

chassis using only the front brackets will damage the chassis and can result in serious bodily injury.

CAUTION: The EX4600 require two people for installation. If you are installing the

EX4600 switch above 60 in. (152.4 cm) from the floor, you can remove the power supplies and fan modules to minimize the weight before attempting to install the switch.

CAUTION: If you are mounting multiple switches on a rack, mount the switch in the

lowest position of the rack first. Proceed to mount the rest of the switches from the bottom to the top of the rack to minimize the risk of the rack toppling.

Four Post Procedure

To mount the switch on four posts in a rack using the provided mounting kit:

1. Attach the ESD grounding strap to your bare wrist and to a site ESD point.

2. Decide whether the Field Replaceable Unit (FRU) end of the switch or the port end is to be placed at the front of the rack. Position the switch in such a manner that the AIR IN labels on components are next to the cold aisle and AIR OUT labels on components are next to the hot aisle.

3. Align the holes in the mounting rail with the holes on the side of the chassis. See Figure 24 on page 82 to see the proper alignment for the EX4600 switch.

Figure 24: Attaching Mounting Rails to the EX4600

g004477

4. Attach the mounting rail to the switch using the mounting screws (and cage nuts and washers if your rack requires them). Tighten the screws.

5. Repeats steps 4 and 5 on the opposite side of the switch.

6. Have one person grasp both sides of the switch, lift it, and position it in the rack so that the front bracket is aligned with the rack holes.

7. Have a second person secure the front of the switch to the rack using four mounting screws (and cage nuts and washers if your rack requires them.) Tighten the screws. See Figure 25 on page 82 for examples of connecting the mounting rails and blades.

Figure 25: Attach EX4600 Switch to Rack

8. Continue to support the switch while sliding the rear mounting-blades into the channel of the side mounting-rails and securing the blades to the rack. Use the four mounting screws (and cage nuts and washers if your rack requires them) to attach each blade to the rack. Tighten the screws. See

Figure 26 on page 83.

Figure 26: Slide Mounting Blade into EX4600 Mounting Rail

g004478

9. Ensure that the switch chassis is level by verifying that all the screws on the front of the rack are aligned with the screws at the back of the rack.

SEE ALSO

Connecting AC Power to an EX4600 Switch | 85 Connecting DC Power to an EX4600 Switch | 88

Connecting the EX4600 to Power

IN THIS SECTION

Connecting Earth Ground to an EX4600 Switch | 84

Connecting AC Power to an EX4600 Switch | 85

Connecting DC Power to an EX4600 Switch | 88

Connecting Earth Ground to an EX4600 Switch

To ensure proper operation and to meet safety and electromagnetic interference (EMI) requirements, you must connect an EX Series switch to earth ground before you connect power to the switch. You must use the protective earthing terminal on the switch chassis to connect the switch to earth ground (see

Figure 27 on page 85).

You must install the EX Series switch in a restricted–access location and ensure that the chassis is always properly grounded. EX Series switches have a two–hole protective grounding terminal provided on the chassis. We recommend that you use the protective grounding terminal as the preferred method for grounding the chassis regardless of the power supply configuration. However, if additional grounding methods are available, you can also use those methods. For example, you can use the grounding wire in the power cord of an AC power supply or use the grounding terminal or lug on a DC power supply. This system was tested to meet or exceed all applicable EMC regulatory requirements with the two-hole protective grounding terminal connected correctly.

Ensure that a licensed electrician has attached an appropriate grounding lug to the grounding cable you supply. Using a grounding cable with an incorrectly attached lug can damage the switch.

NOTE: Mount your switch in the rack or cabinet before attaching the grounding lug to the switch.

See “Mounting an EX4600 Switch in a Rack or Cabinet” on page 79.

Ensure that you have the following parts and tools available:

Protective earthing terminal bracket—This bracket attaches to the EX4600 switch chassis through the

•

left front mounting bracket, providing a protective earthing terminal for the switch.

Grounding cable for your EX4600 switch—The grounding cable must be 14 AWG (2 mm²), minimum 90°

•

C wire, or as permitted by the local code.

Grounding lug for your grounding cable—The grounding lug required is a Panduit LCD10-10A-L or

•

equivalent.

Two SAE 10-32 washers and screws—To attach the grounding lug to the protective earthing terminal.

•

Screwdriver to attach the screws.

•

To connect earth ground to a EX4600 switch:

1. Attach one end of the grounding cable to an appropriate earth ground site, such as the mounting rack.

2. Position the grounding lug over the protective earthing terminal on the side of the chassis, which is visible through the mounting bracket.

3. Secure the grounding lug to the protective earthing terminal with the washers and screws. See

Figure 27 on page 85.

Figure 27: Connecting a Grounding Cable to an EX4600 Switch

4. Dress the grounding cable and ensure that it does not touch or block access to other device components and that it does not drape where people could trip over it.

SEE ALSO

General Safety Guidelines and Warnings | 146 Grounded Equipment Warning | 164

Connecting AC Power to an EX4600 Switch

The EX4600 is shipped from the factory with two power supplies. Each power supply is a hot-removable and hot-insertable field-replaceable unit (FRU) when the second power supply is installed and running. You can install replacement power supplies in the two slots next to the fan modules without powering off the switch or disrupting the switching function.

Ensure that you have a power cord appropriate for your geographical location available to connect AC power to the switch.

Before you begin connecting AC power to the switch:

Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage

•

(see “Prevention of Electrostatic Discharge Damage” on page 180).

Ensure that you have connected the device chassis to earth ground.

•

CAUTION: For installations that require a separate grounding conductor to the

chassis, have a licensed electrician complete this connection before you connect the switch to power. For instructions on connecting earth ground, see Connect Earth Ground to an EX Series Switch.

Install the power supply in the chassis. For instructions on installing a power supply in an EX4600 switch,

•

see “Installing a Power Supply in an EX4600 Switch” on page 105.

NOTE: Each power supply must be connected to a dedicated power source outlet.

To connect AC power to an EX4600 switch:

1. Attach the grounding strap to your bare wrist and to a site ESD point.

2. Ensure that the power supplies are fully inserted in the chassis and the latches are secure. If only one power supply is installed, ensure a that blank cover panel is installed over the second power supply slot.

3. Locate the power cord or cords shipped with the switch; the cords have plugs appropriate for your geographical location. See “AC Power Cord Specifications for an EX4600 Switch” on page 45.

WARNING: Ensure that the power cord does not block access to device components

or drape where people can trip on it.

4. Connect each power supply to the power sources. Insert the coupler end of the power cord into the AC power cord inlet on the AC power supply faceplate.

5. Push the power cord retainer onto the power cord (see Figure 28 on page 87).

Figure 28: Connecting an AC Power Cord to an AC Power Supply in an EX4600 Switch

1—Power cord retainer

6. If the AC power source outlet has a power switch, set it to the OFF (O) position.

NOTE: The switch powers on as soon as power is provided to the power supply. There is no

power switch on the device.

7. Insert the power cord plug into an AC power source outlet.

8. If the AC power source outlet has a power switch, set it to the ON (|) position.

9. Verify that the AC and DC LEDs on each power supply are lit green.

If the amber fault LED is lit, remove power from the power supply, and replace the power supply (see“Removing a Power Supply from an EX4600 Switch” on page 103 ). Do not remove the power supply until you have a replacement power supply ready: the power supplies or a blank cover panel must be installed in the switch to ensure proper airflow.

CAUTION: Replace a failed power supply with a blank panel or new power supply

within 1 minute of removal to prevent chassis overheating.

SEE ALSO

AC Power Supply in an EX4600 Switch | 41

Connecting DC Power to an EX4600 Switch

WARNING: DC-powered EX4600 switches are intended for installation only in a

restricted access location.

NOTE: The battery returns of the DC power supply should be connected as an isolated DC

return (DC-I).

Before you begin connecting DC power to the switch:

Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage

•

(see “Prevention of Electrostatic Discharge Damage” on page 180).

Ensure that you have connected the switch chassis to earth ground.

•

CAUTION: Before you connect power to the switch, a licensed electrician must

attach a cable lug to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the switch (for example, by causing a short circuit).

To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must connect the chassis to earth ground before you connect it to power. For installations that require a separate grounding conductor to the chassis, use the protective earthing terminal on the switch chassis to connect to the earth ground. For instructions on connecting earth ground, see “Connecting Earth

Ground to an EX4600 Switch” on page 84.

Install the power supply in the chassis. For instructions on installing a power supply in an EX4600 switch,

•

see “Installing a Power Supply in an EX4600 Switch” on page 105.

Ensure that you have the following parts and tools available:

DC power source cables (14–16 AWG) with ring lug (Molex 190700069 or equivalent) (not provided)

•

Phillips (+) screwdriver, number 2 (not provided)

•

Multimeter (not provided)

•

To connect DC power to an EX4600 switch:

1. Attach the grounding strap to your bare wrist and to a site ESD point.

2. Verify that the DC power cables are correctly labeled before making connections to the power supply. In a typical power distribution scheme where the return is connected to chassis ground at the battery plant, you can use a multimeter to verify the resistance of the –48V and RTN DC cables to chassis ground:

The cable with very low resistance (indicating a closed circuit) to chassis ground is positive (+) and

•

will be installed on the V+ (return) DC power input terminal.

The cable with very high resistance (indicating an open circuit) to chassis ground is negative (–) and

•

will be installed on the V– (input) DC power input terminal.

CAUTION: You must ensure that power connections maintain the proper polarity.

The power source cables might be labeled (+) and (–) to indicate their polarity. There is no standard color coding for DC power cables. The color coding used by the external DC power source at your site determines the color coding for the leads on the power cables that attach to the DC power input terminals on each power supply.

3. Ensure that the input circuit breaker is open so that the voltage across the DC power source cable leads is 0 V and that the cable leads do not become active while you are connecting DC power.

NOTE: The V+ terminals are referred to as +RTN, and V– terminals are referred to as –48 V

in “DC Power Wiring Sequence Warning” on page 189 and “DC Power Electrical Safety

Guidelines” on page 184.

4. Ensure that the power supplies are fully inserted in the chassis.

5. Remove the terminal block cover. The terminal block cover is a piece of clear plastic that snaps into place over the terminal block (see Figure 29 on page 91).

6. Remove the screws on the terminals using the screwdriver. Save the screws.

WARNING: Ensure that the power cables do not block access to device components

or drape where people can trip on them.

7. Connect each power supply to the power sources. Secure power source cables to the power supplies by screwing the ring lugs attached to the cables to the appropriate terminals by using the screw from the terminals (see Figure 29 on page 91 and Figure 30 on page 92 ).

The EX4600 is designed to operate with a DC power supply that has a single, non-redundant, feed input. For source redundancy, two DC power supplies must be installed in EX4600; connect source (A) to one power supply and connect source (B) to the second power supply. This configuration provides the commonly deployed A/B feed redundancy for the system.

The terminal block of the power supply has four terminals labeled V+, V+, V–, and V– for connecting DC power source cables labeled positive (+) and negative (–). The V+ terminals are shunted internally together, as are the V- terminals.

CAUTION: The connection between each power source and power supply must

include a circuit breaker.

Do not connect two sources to a single power supply because doing so can potentially cause circulating current in feed wires whenever there is any difference in the voltage of the two sources.

a. Secure the ring lug of the positive (+) DC power source cable to the V+ terminal on the DC power

supply.

b. Secure the ring lug of the negative (–) DC power source cable to the V– terminal on the DC power

supply.

c. Tighten the screws on the power supply terminals until snug using the screwdriver. Do not

overtighten—apply between 5 in-lb (0.56 Nm) and 6 in-lb (0.68 Nm) of torque to the screws.

Figure 29: DC Power Supply Faceplate for an EX4600 Switch

5—1— ESD grounding pointShunt negative input terminals (-48V)

6—2— Fault LEDShunt positive input terminals (+RTN)

7—3— Output LEDTerminal block

8—4— Input LEDEjector lever

CAUTION: The V+ terminals are shunted internally together, as are the V- terminals.

The same polarity terminal can be wired together from the same source to provide an additional current path in a higher power chassis. Do not connect the terminals to different sources.

Figure 30: Securing Ring Lugs to the Terminals on the EX4600 DC Power Supply

8. Replace the terminal block cover.

9. Close the input circuit breaker.

NOTE: The switch powers on as soon as power is provided to the power supply. There is no

power switch on the device.

10. Verify that the IN and OUT LEDs on the power supply are lit green and are on steadily.

SEE ALSO

DC Power Supply in an EX4600 Switch | 46

Connecting the EX4600 to Management Devices

IN THIS SECTION

Connect a Device to a Network for Out-of-Band Management | 93

Connect a Device to a Management Console Using an RJ-45 Connector | 93

Connecting EX4600 Switches in a Virtual Chassis | 95

Connect a Device to a Network for Out-of-Band Management

g020548

Management PC

Management

Network

To Management Port

(on Device)

You can monitor and manage these devices by using a dedicated management channel. Each device has a management port to which you can connect an Ethernet cable with an RJ-45 connector. Use the management port to connect the device to the management device.

Ensure that you have an Ethernet cable that has an RJ-45 connector at either end. Figure 31 on page 93 shows the RJ-45 connector of the Ethernet cable supplied with the device.

Figure 31: RJ-45 Connector on an Ethernet Cable

To connect a device to a network for out-of-band management (see Figure 32 on page 93):

1. Connect one end of the Ethernet cable to the management port on the device.

2. Connect the other end of the Ethernet cable to the management device.

Figure 32: Connect a Device to a Network for Out-of-Band Management

Connect a Device to a Management Console Using an RJ-45 Connector

You can configure and manage devices using a dedicated management channel. Each device has a console port which you can connect to using an Ethernet cable with an RJ-45 connector. Use the console port to connect the device to the console server or management console. The console port accepts a cable that has an RJ-45 connector.

Ensure that you have an Ethernet cable that has an RJ-45 connector at either end. One such cable and an

g020547

To Console Port Console Server

g020570

To Console por t

RJ-45 to DB-9 serial port adapter are supplied with the device.

Figure 33 on page 94 shows the RJ-45 connector of the Ethernet cable.

Figure 33: RJ-45 Connector on an Ethernet Cable

NOTE: If your laptop or desktop PC does not have a DB-9 plug connector pin and you want to

connect your laptop or desktop PC directly to the device, use a combination of the RJ-45 to DB-9 socket adapter supplied with the device and a USB to DB-9 plug adapter. You must provide the USB to DB-9 plug adapter.

To connect the device to a management console (see Figure 34 on page 94 and Figure 35 on page 94):

1. Connect one end of the Ethernet cable to the console port (labeled CON, CONSOLE, or CON1) on the device.

2. Connect the other end of the Ethernet cable to the console server (see Figure 34 on page 94) or management console (see Figure 35 on page 94).

Figure 34: Connect a Device to a Management Console Through a Console Server

Figure 35: Connect a Device Directly to a Management Console

Connecting EX4600 Switches in a Virtual Chassis

EX4600 switches can be cabled together to create a Virtual Chassis in a ring topology. Each Virtual Chassis can have up to 10 switches (members) participating in the ring. The Virtual Chassis can be comprised of all EX4600 switches filling the primary Routing Engine (RE), backup RE, and linecard roles. You can also add EX4300 switches to the Virtual Chassis in the primary or backup roles.

Virtual Chassis can be installed in a single rack, multiple rack, or in wire closets.

You configure an EX4600 Virtual Chassis by configuring the SFP+ or QSFP+ interfaces into Virtual Chassis ports (VCPs). VCPs connect switches together to form a Virtual Chassis, and are responsible for passing all data and control traffic between member switches in the Virtual Chassis. All non-channelized QSFP+ uplink interfaces on standalone EX4600 switches can be configured into VCPs. All fixed SFP+ interfaces on EX4600 can also be configured into VCPs.

BEST PRACTICE: Use the 40-Gigabit interfaces for the VCPs.

14.1X53-D25 and later, the EX4600 is fully supported as the primary in a mixed Virtual Chassis of EX4600

and EX4300. Ensure all members of the Virtual Chassis are running the same Junos OS Release by issuing the show chassis version CLI command.

See for a diagram of how to cable two EX4600 switches and two EX4300 switches into a Virtual Chassis for Junos OS Release 14.1X53-D25 and later.

Figure 36: Four Member Virtual Chassis with EX4600 Primary and Backup

SEE ALSO

Port Panel of an EX4600 Switch | 24

Configuring Junos OS on the EX4600

You must perform the initial configuration of the EX4600 switch through the console port using the command-line interface (CLI).

Before you begin connecting and configuring an EX4600 switch, set the following parameter values on the console server or PC:

Baud Rate—9600

•

Flow Control—None

•

Data—8

•

Parity—None

•

Stop Bits—1

•

DCD State—Disregard

•

To connect and configure the switch from the console:

1. Connect the console port to a laptop or PC using the supplied RJ-45 cable and RJ-45 to DB-9 adapter. The console (CON) port is located on the management panel of the switch.

2. Log in as root. There is no password. If the software booted before you connected to the console port, you might need to press the Enter key for the prompt to appear.

3. Start the CLI.

root@% cli

4. Enter configuration mode.

root> configure

5. Add a password to the root administration user account.

[edit] root@# set system root-authentication plain-text-password

New password: password Retype new password: password

6. (Optional) Configure the name of the switch. If the name includes spaces, enclose the name in quotation marks (“ ”).

[edit] root@# set system host-name host-name

7. Configure the default gateway.

[edit] root@# set routing-options static route default next-hop address

8. Configure the IP address and prefix length for the switch management interface.

[edit] root@# set interfaces em0 unit 0 family inet address address/prefix-length

CAUTION: Although the CLI permits you to configure two management Ethernet

interfaces within the same subnet, only one interface is usable and supported.

NOTE: The management ports, em0 (C0) and em1 (C1) are found on the management panel

of the EX4600 switch.

9. (Optional) Configure the static routes to remote prefixes with access to the management port.

[edit] root@# set routing-options static route remote-prefix next-hop destination-ip retain no-readvertise

10. Enable telnet service.

[edit] root@# set system services telnet

NOTE: When Telnet is enabled, you cannot log in to the EX4600 switch through Telnet using

root credentials. Root login is allowed only for SSH access.

11. Commit the configuration to activate it on the switch.

[edit] root@# commit

Maintaining Components

Maintaining the EX4600 Switch Cooling System | 100

Maintaining the EX4600 Switch Power System | 103

Maintaining the Expansion Module in an EX4600 Switch | 106

Maintain Transceivers | 110

Maintain Fiber-Optic Cables | 120

Removing the EX4600 Switch | 123

Maintaining the EX4600 Switch Cooling System

IN THIS SECTION

Removing a Fan Module from an EX4600 Switch | 100

Installing a Fan Module in an EX4600 Switch | 101

Removing a Fan Module from an EX4600 Switch

The fan modules in an EX4600 switch are hot-removable and hot-insertable field-replaceable units (FRUs): you can remove and replace them without powering off the switch or disrupting switch functions.

100

CAUTION: Replace a failed fan module with a new fan module within 1 minute of

removal to prevent chassis overheating. Before removing the fan module, ensure you have a replacement fan module at hand.

Before you remove a fan module from an EX4600 switch, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see “Prevention of Electrostatic Discharge

Damage” on page 180).

Ensure that you have the following parts and tools available to remove a fan module from an EX4600 switch:

ESD grounding strap

•

Antistatic bag or an antistatic mat

•

To remove a fan module from an EX4600 switch (see Figure 37 on page 101):

1. Place the antistatic bag or the antistatic mat on a flat, stable surface.

2. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.

3. Using a Phillips screwdriver, loosen the locking screw (3 or 4 turns).

4. Grasp the handle on the fan module and squeeze the outside of the handle to release the module.

Juniper EX4600 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Table of Contents

About the Documentation

Documentation and Release Notes

Using the Examples in This Manual

Merging a Full Example

Merging a Snippet

Documentation Conventions

Documentation Feedback

Requesting Technical Support

Self-Help Online Tools and Resources

Creating a Service Request with JTAC

Overview

EX4600 System Overview

EX4600 Switch Hardware Overview

Benefits of the EX4600 Switch

EX4600 Hardware

System Software

EX4600 Switch Models

Understanding Redundancy of EX4600 Switch Components and Functionality

EX4600 Chassis

Chassis Physical Specifications for an EX4600 Switch

Field-Replaceable Units in an EX4600 Switch

Port Panel of an EX4600 Switch

Access Port and Uplink Port LEDs on an EX4600 Switch

Management Panel of an EX4600 Switch

Chassis Status LEDs on an EX4600 Switch

Expansion Modules for the EX4600

EX4600-EM-8F

QFX-EM-4Q

EX4600 Cooling System

Cooling System and Airflow in an EX4600 Switch

Fan Modules

Do Not Install Components with Different Airflow or Wattage in the Switch

Fan Module Status

Fan Module LED on an EX4600 Switch

EX4600 Power System

AC Power Supply in an EX4600 Switch

AC Power Supply LEDs on an EX4600 Switch

AC Power Specifications for an EX4600 Switch

AC Power Cord Specifications for an EX4600 Switch

DC Power Supply in an EX4600 Switch

DC Power Supply LEDs in EX4600 Switches

DC Power Specifications for an EX4600 Switch

Grounding Cable and Lug Specifications for an EX4600 Switch

Site Preparation Checklist for an EX4600 Switch

EX4600 Site Guidelines and Requirements

Environmental Requirements and Specifications for EX Series Switches

General Site Guidelines

Site Electrical Wiring Guidelines

Rack Requirements for an EX4600 Switch

Cabinet Requirements for an EX4600 Switch

EX4600 Network Cable and Transceiver Planning

Determining Interface Support for an EX4600 Switch

Cable Specifications for QSFP+ Transceivers on EX4600 Series Switches

Network Cable Specifications for EX4600 Switches

Understanding EX Series Switches Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion

Signal Loss in Multimode and Single-Mode Fiber-Optic Cable

Attenuation and Dispersion in Fiber-Optic Cable

Calculating the Fiber-Optic Cable Power Budget for EX Series Devices

Calculating the Fiber-Optic Cable Power Margin for EX Series Devices

EX4600 Management Cable Specifications and Pinouts

Cable Specifications for Console and Management Connections for the EX4600

USB Port Specifications for an EX Series Switch

Console Port Connector Pinout Information

RJ-45 Management Port Connector Pinout Information

Initial Installation and Configuration

Unpacking and Mounting an EX4600 Switch

Installing and Connecting an EX4600 Switch

Unpacking an EX4600 Switch

Mounting an EX4600 Switch in a Rack or Cabinet

Before You Begin Rack Installation

Four Post Procedure

Connecting the EX4600 to Power

Connecting Earth Ground to an EX4600 Switch

Connecting AC Power to an EX4600 Switch

Connecting DC Power to an EX4600 Switch