Juniper EX2300 Hardware Guide

EX2300 Switch Hardware Guide

Published

2020-12-28

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.

EX2300 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 | xi

Documentation and Release Notes | xi

Using the Examples in This Manual | xi

Merging a Full Example | xii

Merging a Snippet | xiii

Documentation Conventions | xiii

Documentation Feedback | xvi

Requesting Technical Support | xvi

Self-Help Online Tools and Resources | xvii

Creating a Service Request with JTAC | xvii

iii

Overview

EX2300 System Overview | 19

EX2300 Switches Hardware Overview | 19

Benefits of the EX2300 Switch | 20

EX2300 Switches First View | 20

Uplink Ports | 20

Console Ports | 21

Cable Guard | 21

Security Slot | 21

Power over Ethernet (PoE) Ports | 21

Front Panel of an EX2300 Switch | 22

Rear Panel of an EX2300 Switch | 26

EX2300 Switch Models | 31

EX2300 Switch Hardware and CLI Terminology Mapping | 33

Chassis Physical Specifications for EX2300 Switches | 37

EX2300 Chassis | 38

Chassis Status LEDs in EX2300 Switches | 38

Management Port LEDs in EX2300 Switches | 43

RJ-45 Network Port LEDs and Uplink Port LEDs in EX2300 Switches | 45

EX2300 Cooling System | 50

Airflow Direction in EX2300 Switches with 24 Ports with PoE Capability Except the

EX2300-24MP Switch Model | 51

Airflow Direction in EX2300-24MP Switch Model | 51

Airflow Direction in EX2300 Switches with 48 Ports with PoE Capability Except the

EX2300-48MP Switch Model | 52

Airflow Direction in EX2300-48MP Switch Model | 53

Airflow Direction in EX2300 Switches without PoE Capability | 54

EX2300 Power System | 56

Power Supply in EX2300 Switches | 56

Power Specifications for EX2300 Switches | 57

AC Power Cord Specifications for EX2300 Switches | 59

Site Planning, Preparation, and Specifications

Site Preparation Checklist for EX2300 Switches | 62

EX2300 Site Guidelines and Requirements | 63

Environmental Requirements and Specifications for EX Series Switches | 64

General Site Guidelines | 69

Site Electrical Wiring Guidelines | 69

Rack Requirements | 70

Cabinet Requirements | 71

Requirements for Mounting an EX2300 Switch On or Under a Desk or Other Level Surface

or On a Wall | 72

Clearance Requirements for Airflow and Hardware Maintenance for EX2300 Switches | 73

EX2300 Network Cable and Transceiver Planning | 79

Pluggable Transceivers Supported on EX2300 Switches | 80

SFP+ Direct Attach Copper Cables for EX Series Switches | 81

Cable Specifications | 82

List of DAC Cables Supported on EX Series Switches | 82

Standards Supported by These Cables | 83

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

Dispersion | 83

Signal Loss in Multimode and Single-Mode Fiber-Optic Cable | 83

Attenuation and Dispersion in Fiber-Optic Cable | 84

Calculating the Fiber-Optic Cable Power Budget for EX Series Devices | 84

Calculating the Fiber-Optic Cable Power Margin for EX Series Devices | 85

EX2300 Management Cable Specifications and Pinouts | 87

Management Cable Specifications | 87

Console Port Connector Pinout Information | 88

USB Port Specifications for an EX Series Switch | 89

Mini-USB Port Pinout Specifications | 89

RJ-45 Management Port Connector Pinout Information | 90

RJ-45 Port, SFP Port, SFP+ Port, QSFP+ Port, and QSFP28 Port Connector Pinout

Information | 91

SFP+ Uplink Port Connector Pinout Information for an EX2300 Switch | 96

RJ-45 to DB-9 Serial Port Adapter Pinout Information | 97

EX2300 Virtual Chassis | 98

Planning EX2300 Virtual Chassis | 98

Understanding EX2300 Virtual Chassis Hardware Configuration | 98

Initial Installation and Configuration

Unpacking and Mounting the EX2300 Switch | 101

Unpacking an EX2300 Switch | 101

Parts Inventory (Packing List) for an EX2300 Switch | 102

Installing and Connecting an EX2300 Switch | 104

Mounting an EX2300 Switch | 105

Mounting an EX2300 Switch on a Desk or Other Level Surface | 106

Mounting an EX2300-C Switch Under a Desk or Other Level Surface by Using Screws | 108

Mounting an EX2300 Switch on Two Posts of a Rack or Cabinet | 111

Mounting an EX2300 Switch on Four Posts of a Rack or Cabinet | 114

Mounting an EX2300 Switch on a Wall | 117

Mounting an EX2300-C Switch on a Wall | 118

Mounting an EX2300 Switch Except the EX2300-C Switch and the EX2300-24MP and

EX2300-48MP Models on a Wall | 122

Mounting an EX2300-C Switch on or Under a Surface Made of Ferrous Material | 126

Mounting an EX2300 Switch in a Recessed Position in a Rack or Cabinet | 131

Connecting the EX2300 to Power | 131

Connect Earth Ground to an EX Series Switch | 131

Parts and Tools Required for Connecting an EX Series Switch to Earth Ground | 132

Special Instructions to Follow Before Connecting Earth Ground to an EX Series Switch | 136

Connecting Earth Ground to an EX Series Switch | 137

Connecting AC Power to an EX2300 Switch | 138

Connecting DC Power to an EX2300 Switch | 141

Connecting the EX2300 to External Devices | 144

Connect a Device to a Network for Out-of-Band Management | 144

Connect a Device to a Management Console Using an RJ-45 Connector | 145

Connect an EX Series Switch to a Management Console Using the Mini-USB Type-B Console

Port | 146

Connecting the EX2300 to the Network | 148

Install a Transceiver | 148

Configuring Junos OS on the EX2300 | 151

EX2300 Switch Default Configuration | 151

Connecting and Configuring an EX Series Switch (CLI Procedure) | 167

Connecting and Configuring an EX Series Switch (J-Web Procedure) | 170

Reverting to the Default Factory Configuration for the EX Series Switch | 174

Reverting to the EX Series Switch Factory-Default Configuration Using the request system

zeroize Command | 175

Reverting to the EX Series Switch Factory-Default Configuration Using the load

factory-default Command | 176

Reverting to the Factory-Default Configuration Using the EX Series Switch LCD Panel | 177

Reverting to the Factory-Default Configuration Using the Factory Reset/Mode button on

EX2300, EX3400, and EX4300-48MP Switches | 178

Dashboard for EX Series Switches | 180

Graphical Chassis Viewer | 181

System Information Panel | 183

Health Status Panel | 186

Capacity Utilization Panel | 190

Alarms Panel | 191

File System Usage | 191

Chassis Viewer | 191

Maintaining Components

Maintain Transceivers | 210

Remove a Transceiver | 210

vii

Remove a QSFP28 Transceiver | 213

Install a Transceiver | 215

Install a QSFP28 Transceiver | 217

Maintain Fiber-Optic Cables | 219

Connect a Fiber-Optic Cable | 219

Disconnect a Fiber-Optic Cable | 220

How to Handle Fiber-Optic Cables | 221

Troubleshooting Hardware

Troubleshooting EX2300 Components | 224

Understand Alarm Types and Severity Levels on EX Series Switches | 224

Chassis Component Alarm Conditions on EX2300 Switches | 226

Check Active Alarms with the J-Web Interface | 227

Monitor System Log Messages | 228

Troubleshooting PoE Voltage Injection Failure in EX2300, EX3400, or EX4300 Switch Models

with PoE Capability | 233

Troubleshooting Storage Issues While Upgrading Junos OS in EX2300 and EX3400

Switches | 234

Troubleshoot Temperature Alarms in EX Series Switches | 236

Contacting Customer Support and Returning the Chassis or Components

Returning an EX2300 Switch or Component for Repair or Replacement | 242

Locating the Serial Number on an EX2300 Switch or Component | 243

Listing the Switch and Components Details with the CLI | 243

Locating the Chassis Serial Number ID Label on an EX2300 Switch | 244

Contact Customer Support to Obtain Return Material Authorization | 245

Packing an EX2300 Switch or Component for Shipping | 246

Packing a Switch for Shipping | 246

Packing Switch Components for Shipping | 247

Safety and Compliance Information

General Safety Guidelines and Warnings | 250

viii

Definitions of Safety Warning Levels | 251

Qualified Personnel Warning | 254

Warning Statement for Norway and Sweden | 255

Fire Safety Requirements | 255

Fire Suppression | 255

Fire Suppression Equipment | 255

Installation Instructions Warning | 257

Chassis and Component Lifting Guidelines | 257

Restricted Access Warning | 259

Ramp Warning | 261

Rack-Mounting and Cabinet-Mounting Warnings | 262

Grounded Equipment Warning | 268

Laser and LED Safety Guidelines and Warnings | 269

General Laser Safety Guidelines | 269

Class 1 Laser Product Warning | 270

Class 1 LED Product Warning | 271

Laser Beam Warning | 272

Radiation from Open Port Apertures Warning | 273

Maintenance and Operational Safety Guidelines and Warnings | 274

Battery Handling Warning | 275

Jewelry Removal Warning | 276

Lightning Activity Warning | 278

Operating Temperature Warning | 279

Product Disposal Warning | 281

General Electrical Safety Guidelines and Warnings | 282

Action to Take After an Electrical Accident | 283

Prevention of Electrostatic Discharge Damage | 284

AC Power Electrical Safety Guidelines | 285

AC Power Disconnection Warning | 287

DC Power Electrical Safety Guidelines | 288

DC Power Disconnection Warning | 289

DC Power Grounding Requirements and Warning | 291

DC Power Wiring Sequence Warning | 293

DC Power Wiring Terminations Warning | 296

Multiple Power Supplies Disconnection Warning | 299

TN Power Warning | 300

Agency Approvals for EX Series Switches | 300

Compliance Statements for EMC Requirements for EX Series Switches | 301

Canada | 302

Taiwan | 303

European Community | 303

Israel | 303

Japan | 303

Korea | 304

United States | 304

FCC Part 15 Statement | 304

Nonregulatory Environmental Standards | 305

Compliance Statements for Acoustic Noise for EX Series Switches | 306

Restriction of Hazardous Substances (RoHS) Directive Compliance | 306

About the Documentation

IN THIS SECTION

Documentation and Release Notes | xi

Using the Examples in This Manual | xi

Documentation Conventions | xiii

Documentation Feedback | xvi

Requesting Technical Support | xvi

Use this guide to install hardware and perform initial software configuration, routine maintenance, and troubleshooting for the EX2300 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;

}

} }

xii

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]

xiii

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 xiv defines notice icons used in this guide.

Table 1: Notice Icons

xiv

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 xiv 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)

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)

xvi

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/

•

xvii

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

EX2300 System Overview | 19

EX2300 Chassis | 38

EX2300 Cooling System | 50

EX2300 Power System | 56

EX2300 System Overview

IN THIS SECTION

EX2300 Switches Hardware Overview | 19

EX2300 Switch Models | 31

EX2300 Switch Hardware and CLI Terminology Mapping | 33

Chassis Physical Specifications for EX2300 Switches | 37

EX2300 Switches Hardware Overview

IN THIS SECTION

Benefits of the EX2300 Switch | 20

EX2300 Switches First View | 20

Uplink Ports | 20

Console Ports | 21

Cable Guard | 21

Security Slot | 21

Power over Ethernet (PoE) Ports | 21

Front Panel of an EX2300 Switch | 22

Rear Panel of an EX2300 Switch | 26

Juniper Networks EX Series Ethernet Switches provide scalable connectivity for the enterprise market, including branch offices, campus locations, and data centers. The Juniper Networks EX2300 Ethernet Switches run the Juniper Networks Junos operating system (Junos OS), which provides Layer 2 and Layer 3 switching, routing, and security services.

EX2300 switches provide connectivity for low-density environments.

Benefits of the EX2300 Switch

Economical—EX2300 switches offer an economical, entry-level, standalone solution for access-layer deployments in branch and remote offices, as well as enterprise campus networks. 1 Gbps and 2.5 Gbps access port options provide high speed options, especially when connecting to 802.11ac Wave 2 access points.

High flexibility and class leading features—EX2300 switches provide the highest levels of flexibility and features in its class to support data, voice, and video environments, delivering a reliable platform for unifying enterprise communications.

Support for Juniper Networks Junos Fusion Enterprise—EX2300 switches can act as a satellite device to support a Juniper Networks Junos Fusion Enterprise deployment, which can combine several wiring closets into one logical management platform. In smaller networks, you can connect up to four EX2300 switches in a Virtual Chassis configuration, allowing them to be managed as a single switch.

EX2300 Switches First View

EX2300 switches are available in models with 12 or 24, or 48 built-in network ports that support RJ-45 cable connectors. The compact, fanless EX2300-C switches have 12 RJ-45 network ports.

EX2300 switches provide:

Up to six 10-Gigabit Ethernet uplink ports that support small form-factor pluggable plus (SFP+) transceivers

•

and small form-factor pluggable (SFP) transceivers.

12 (in EX2300-C switches), 16, 24, 32, or 48 built-in Gigabit Ethernet RJ-45 network ports with

•

10/100/1000 BASE-T connectors.

Eight or 16 built-in Gigabit Ethernet RJ-45 network ports with 100/1000/2500 BASE-T connectors.

•

Virtual Chassis capability—You can connect up to four EX2300 switches (including EX2300-C switches)

•

to form one unit that you manage as a single chassis, called a Virtual Chassis.

Power over Ethernet (PoE) or Power over Ethernet Plus (PoE+) on all RJ-45 network ports (in PoE-capable

•

models).

Uplink Ports

EX2300-C switches have two 10-Gigabit Ethernet uplink ports. EX2300 switches except the EX2300-C switch model and the EX2300-48MP switch model have four 10-Gigabit Ethernet uplink ports. The EX2300-48MP switch model has six 10-Gigabit Ethernet uplink ports. These uplink ports support SFP and SFP+ transceivers. You can use these uplink ports as network ports or configure these ports as Virtual Chassis ports (VCPs) and use them to connect up to four switches by using SFP+ transceivers to form a Virtual Chassis.

NOTE: You cannot form a Virtual Chassis by using SFP transceivers.

For forming a Virtual Chassis, you must explicitly configure an uplink port on each of the switches to be connected as a VCP. See Setting an Uplink Port on an EX Series or QFX Series Switch as a Virtual Chassis Port.

For information about the supported optical and copper interfaces, see “Pluggable Transceivers Supported

on EX2300 Switches” on page 80.

Console Ports

EX2300 switches except the EX2300-24MP and EX2300-48MP switch models have two console ports—an RJ-45 console port and a Mini-USB Type-B console port. EX2300-24MP and EX2300-48MP switch models have an RJ-45 console port. The RJ-45 port accepts a cable that has an RJ-45 connector and the Mini-USB Type-B port accepts a Mini-B plug (5-pin) connector to connect the switch to a console management device.

Cable Guard

On an EX2300-C switch, you can install a cable guard to secure the cables connected to the switch. The cable guard has slots in the front of it through which you can pass all the cables to prevent them from being accidently unplugged or removed after they are connected. See “Mounting an EX2300 Switch on a

Desk or Other Level Surface” on page 106, “Mounting an EX2300-C Switch Under a Desk or Other Level Surface by Using Screws” on page 108, and “Mounting an EX2300-C Switch on or Under a Surface Made of Ferrous Material” on page 126.

Security Slot

An EX2300-C switch has a security slot on the right panel of the chassis. You can use the security slot to lock and secure the chassis in the installation site with a standard cable lock. See “Mounting an EX2300

Switch on a Desk or Other Level Surface” on page 106, “Mounting an EX2300-C Switch Under a Desk or Other Level Surface by Using Screws” on page 108, and “Mounting an EX2300-C Switch on or Under a Surface Made of Ferrous Material” on page 126.

Power over Ethernet (PoE) Ports

EX2300 switches are available with or without PoE/PoE+ capability. Models that support PoE/PoE+ provide that support on all RJ-45 network ports. PoE ports provide electrical current to devices—such as IP phones, wireless access points, and security cameras—through network cables, thus eliminating the need for separate power cords for those devices. Uplink ports do not support PoE.

NOTE: IEEE 802.3at class 4 powered devices require category 5 or higher Ethernet cables.

The remainder of this topic uses the term PoE to refer to both PoE and PoE+ unless there is a need to distinguish between the two.

Front Panel of an EX2300 Switch

The front panel of an EX2300-C switch consists of the following components:

RJ-45 network ports—depending on the switch model, either of:

•

12 10/100/1000 BASE-T Gigabit Ethernet ports with PoE/PoE+ capability in EX2300-C-12P

•

12 10/100/1000 BASE-T Gigabit Ethernet ports without PoE capability in EX2300-C-12T

•

One USB port

•

One management Ethernet port

•

Three chassis status LEDs

•

Four port status mode LEDs in models with PoE capability and three port status mode LEDs in models

•

without PoE capability

One Factory Reset/Mode button

•

One mini-USB console port

•

One RJ-45 console port

•

Two built-in 10-Gigabit Ethernet uplink ports. You can use the uplink ports to forward network traffic

•

or configure them as VCPs to interconnect EX2300 switches into a Virtual Chassis.

One electrostatic discharge (ESD) point

•

Figure 1 on page 23 shows the front panel of an EX2300-C switch with 12 Gigabit Ethernet ports with

PoE capability and Figure 2 on page 23 shows the front panel of an EX2300-C switch with 12 Gigabit Ethernet ports without PoE capability.

Figure 1: Front Panel of an EX2300-C Switch with 12 Gigabit Ethernet Ports with PoE Capability

6—1— Factory Reset/Mode buttonRJ-45 network ports

7—2— Mini-USB console portUSB port

8—3— RJ-45 console portManagement Ethernet port

9—4— 10-Gigabit Ethernet uplink portsChassis status LEDs

10—5— ESD pointPort status mode LEDs. The LED labeled PoE is

present only on models with PoE capability.

Figure 2: Front Panel of an EX2300-C Switch with 12 Gigabit Ethernet Ports without PoE Capability

6—1— Factory Reset/Mode buttonRJ-45 network ports

7—2— Mini-USB console portUSB port

8—3— RJ-45 console portManagement Ethernet port

9—4— 10-Gigabit Ethernet uplink portsChassis status LEDs

10—5— ESD pointPort status mode LEDs

The front panel of EX2300 switches except the EX2300-C, EX2300-24MP, and EX2300-48MP switch models consists of the following components:

RJ-45 network ports—depending on the switch model, either of:

•

24 10/100/1000 BASE-T Gigabit Ethernet ports without PoE capability in the EX2300-24T and

•

EX2300-24T-DC models

48 10/100/1000 BASE-T Gigabit Ethernet ports without PoE capability in the EX2300-48T model

•

24 10/100/1000 BASE-T Gigabit Ethernet ports with PoE/PoE+ capability in the EX2300-24P model

•

48 10/100/1000 BASE-T Gigabit Ethernet ports with PoE/PoE+ capability in the EX2300-48P model

•

Three chassis status LEDs

•

Four port status mode LEDs in models with PoE capability and three port status mode LEDs in models

•

without PoE capability

One Factory Reset/Mode button

•

One mini-USB console port

•

Four built-in 10-Gigabit Ethernet uplink ports. You can use these ports to forward network traffic or

•

configure them into VCPs to interconnect EX2300 switches into a Virtual Chassis.

Figure 3 on page 24 shows the front panel of an EX2300 switch with 24 Gigabit Ethernet ports with PoE

capability except the EX2300-24MP model and Figure 4 on page 25 shows the front panel of an EX2300 switch with 48 Gigabit Ethernet ports except the EX2300-48MP model.

Figure 3: Front Panel of an EX2300 Switch with 24 Gigabit Ethernet Ports with PoE Capability Except the EX2300-24MP Model

present only on models with PoE capability.

4—1— Factory Reset/Mode buttonRJ-45 network ports

5—2— Mini-USB console portChassis status LEDs

6—3— 10-Gigabit Ethernet uplink portsPort status mode LEDs. The LED labeled PoE is

Figure 4: Front Panel of an EX2300 Switch with 48 Gigabit Ethernet Ports with PoE Capability Except

g022291

56 4

the EX2300-48MP Model

4—1— Factory Reset/Mode buttonRJ-45 network ports

5—2— Mini-USB console portChassis status LEDs

6—3— 10-Gigabit Ethernet uplink portsPort status mode LEDs. The LED labeled PoE is

present only on models with PoE capability.

The front panel of EX2300-24MP switch models consists of the following components:

QR code

•

System LEDs

•

One USB port

•

One management port

•

Eight 100/1000/2500 BASE-T Gigabit Ethernet ports with PoE/PoE+ capability

•

16 10/100/1000 BASE-T Gigabit Ethernet ports with PoE/PoE+ capability

•

Four built-in 10-Gigabit Ethernet uplink ports. You can use these ports to forward network traffic or

•

configure them into VCPs to interconnect EX2300 switches into a Virtual Chassis.

One RJ-45 console port

•

The front panel of EX2300-48MP switch models consists of the following components:

QR code

•

System LEDs

•

One USB port

•

One management port

•

One RJ-45 console port

•

16 100/1000/2500 BASE-T Gigabit Ethernet ports with PoE/PoE+ capability

•

32 10/100/1000 BASE-T Gigabit Ethernet ports with PoE/PoE+ capability

•

Six built-in 10-Gigabit Ethernet uplink ports. You can use these ports to forward network traffic or

•

configure them into VCPs to interconnect EX2300 switches into a Virtual Chassis.

Figure 5 on page 26 shows the front panel of an EX2300-24MP switch and Figure 6 on page 26 shows

g022318

8 67

g022319

1 2

7 68

43 3

the front panel of an EX2300-48MP switch.

Figure 5: Front Panel of an EX2300-24MP Switch

5—1— 10/100/1000 BASE-T Gigabit Ethernet portsQR code

6—2— 10-Gigabit Ethernet uplink portsSystem LEDs

7—3— Console portManagement port

8—4— USB port100/1000/2500 BASE-T Gigabit Ethernet ports

Figure 6: Front Panel of an EX2300-48MP Switch

5—1— 10-Gigabit Ethernet uplink portsQR code

6—2— Management portSystem LEDs

7—3— Console port10/100/1000 BASE-T Gigabit Ethernet ports with

PoE/PoE+ capability

8—4— USB port100/1000/2500 BASE-T Gigabit Ethernet ports

Rear Panel of an EX2300 Switch

The rear panel of an EX2300-C switch consists of the following components:

Serial number ID label

•

CLEI code label

•

One protective earthing terminal

•

Heatsink

•

One AC power cord inlet

•

Figure 7 on page 27 shows the rear panel of an EX2300-C switch with 12 Gigabit Ethernet ports with PoE

capability and Figure 8 on page 27 shows the rear panel of an EX2300-C switch with 12 Gigabit Ethernet ports without PoE capability.

EX2300-C switches being fanless models have no exhaust openings. EX2300 switches have vents on the top of the chassis. The PoE models have a heatsink installed in the rear panel to dissipate heat, while non-PoE models have no heatsink.

Figure 7: Rear Panel of an EX2300-C Switch with 12 Gigabit Ethernet Ports with PoE Capability

4—1— Heatsink—only in PoE modelsCLEI code label

5—2— AC power cord inletSerial number ID label

3—Protective earthing terminal

Figure 8: Rear Panel of an EX2300-C Switch with 12 Gigabit Ethernet Ports without PoE Capability

3—1— Protective earthing terminalCLEI code label

4—2— AC power cord inletSerial number ID label

The rear panel of the EX2300 switch except the EX2300-C, EX2300-24MP, and EX2300-48MP switch models consists of the following components:

One management Ethernet port that supports an RJ-45 connector

•

One console port that supports an RJ-45 connector

•

One protective earthing terminal

•

One ESD point

•

Air exhaust openings

•

Serial number ID label

•

CLEI code label

•

One AC power cord inlet or DC power terminals

•

One USB port

•

Figure 9 on page 28 shows the rear panel of an AC-powered EX2300 switch with 24 Gigabit Ethernet

ports with PoE capability except the EX2300-24MP model and Figure 10 on page 29 shows the rear panel of an EX2300 switch with 48 Gigabit Ethernet ports with PoE capability except the EX2300-48MP model.

Figure 11 on page 29 shows the rear panel of an AC-powered EX2300 switch with 24 Gigabit Ethernet

ports without PoE capability and Figure 12 on page 30 shows the rear panel of an EX2300 switch with 48 Gigabit Ethernet ports without PoE capability. Figure 13 on page 30 shows the rear panel of a DC-powered EX2300 switch with 24 Gigabit Ethernet ports.

NOTE: DC-powered EX2300 switches do not provide PoE.

The AC power cord retainer clips in EX2300 switches except the EX2300-24MP model and the EX2300-48MP model extend out of the chassis by 3 in (7.62 cm).

Figure 9: Rear Panel of an AC-Powered EX2300 Switch with 24 Gigabit Ethernet Ports with PoE Capability Except the EX2300-24MP Model

6—1— Air exhaust openingsUSB port

7—2— Serial number ID labelManagement Ethernet port

8—3— CLEI code labelRJ-45 console port

9—4— AC power cord inletProtective earthing terminal

5—ESD point

Figure 10: Rear Panel of an AC-Powered EX2300 Switch with 48 Gigabit Ethernet Ports with PoE Capability Except the EX2300-48MP Model

6—1— Air exhaust openingsUSB port

7—2— Serial number ID labelManagement Ethernet port

8—3— CLEI code labelRJ-45 console port

9—4— AC power cord inletProtective earthing terminal

5—ESD point

Figure 11: Rear Panel of an AC-Powered EX2300 Switch with 24 Gigabit Ethernet Ports without PoE Capability

5—ESD point

6—1— Air exhaust openingUSB port

7—2— Serial number ID labelManagement Ethernet port

8—3— CLEI code labelRJ-45 console port

9—4— AC power cord inletProtective earthing terminal

Figure 12: Rear Panel of an AC-Powered EX2300 Switch with 48 Gigabit Ethernet Ports without PoE Capability

6—1— Air exhaust openingUSB port

7—2— Serial number ID labelManagement Ethernet port

8—3— CLEI code labelRJ-45 console port

9—4— AC power cord inletProtective earthing terminal

5—ESD point

Figure 13: Rear Panel of a DC-Powered EX2300 Switch with 24 Gigabit Ethernet Ports

6—1— Air exhaust openingUSB port

7—2— Serial number ID labelManagement Ethernet port

8—3— CLEI code labelRJ-45 console port

9—4— DC power terminalsProtective earthing terminal

5—ESD point

The rear panel of EX2300-24MP and EX2300-48MP switch models consists of the following components:

CLEI code label

•

Serial number ID label

•

One ESD point

•

One AC power cord inlet

•

Figure 14 on page 31 shows the rear panel of an EX2300-24MP switch and Figure 15 on page 31 shows

the rear panel of an EX2300-48MP switch.

Figure 14: Rear Panel of an EX2300-24MP Switch

g022320

421

g022321

EX2300 MG PoE+

ACINPUT : 100-240V~; 10.6-4.8A; 50/60 Hz

21 4

Figure 15: Rear Panel of an EX2300-48MP Switch

3—1— ESD pointCLEI code label

4—2— AC power cord inletSerial number ID label

3—1— AC power cord inletCLEI code label

4—2— ESD pointSerial number ID label

EX2300 Switch Models

The EX2300 switch is available with 12 or 24, or 48 built-in RJ-45 network ports with full Power over Ethernet (PoE) or Power over Ethernet plus (PoE+) capability on all built-in RJ-45 network ports (access ports), or no PoE capability. Table 3 on page 32 lists the EX2300 switch models.

EX2300-C switches have two uplink ports. EX2300 switches except the EX2300-C switch model and the EX2300-48MP switch model have four uplink ports. The EX2300-48MP switch model has six 10-Gigabit Ethernet uplink ports. These uplink ports support SFP and SFP+ transceivers. You can use these uplink ports as network ports or configure these ports as Virtual Chassis ports (VCPs) and use them to connect up to four switches by using SFP+ transceivers to form a Virtual Chassis. You cannot form a Virtual Chassis by using SFP transceivers. Uplink ports do not support PoE.

Table 3: EX2300 Switch Models

Virtual Chassis LicenseAccess PortsModel

Ports in Which PoE Is Available

Maximum System Power Available for PoE/PoE+

First Junos OS Release

EX2300-C-12T

EX2300-C-12T-VC

EX2300-C-12T-TAA

EX2300-C-12P

EX2300-C-12P-VC

EX2300-C-12P-TAA

EX2300-24T

15.1X53-D50––Not available12 Gigabit

Ethernet

15.1X53-D50––Available12 Gigabit

Ethernet

15.1X53-D50––Not available12 Gigabit

Ethernet

15.1X53-D50124 WAll 12 portsNot available12 Gigabit

Ethernet

15.1X53-D50124 WAll 12 portsAvailable12 Gigabit

Ethernet

15.1X53-D50124 WAll 12 portsNot available12 Gigabit

Ethernet

15.1X53-D50––Not available24 Gigabit

Ethernet

EX2300-24T-VC

EX2300-24T-TAA

EX2300-24T-DC

EX2300-24P

EX2300-24P-VC

15.1X53-D50––Available24 Gigabit

Ethernet

15.1X53-D50––Not available24 Gigabit

Ethernet

15.1X53-D51––Not available24 Gigabit

Ethernet

15.1X53-D50370 WAll 24 portsNot available24 Gigabit

Ethernet

15.1X53-D50370 WAll 24 portsAvailable24 Gigabit

Ethernet

Table 3: EX2300 Switch Models (continued)

Virtual Chassis LicenseAccess PortsModel

Ports in Which PoE Is Available

Maximum System Power Available for PoE/PoE+

First Junos OS Release

EX2300-24P-TAA

EX2300-24MP

EX2300-48T

EX2300-48T-VC

EX2300-48T-TAA

EX2300-48P

EX2300-48P-VC

15.1X53-D50370 WAll 24 portsNot available24 Gigabit

Ethernet

18.1R2380 WAll 24 portsNot available24 Gigabit

Ethernet

15.1X53-D55––Not available48 Gigabit

Ethernet

15.1X53-D55––Available48 Gigabit

Ethernet

15.1X53-D55––Not available48 Gigabit

Ethernet

15.1X53-D55740 WAll 48 portsNot available48 Gigabit

Ethernet

15.1X53-D55740 WAll 48 portsAvailable48 Gigabit

Ethernet

EX2300-48P-TAA

Ethernet

EX2300-48MP

Ethernet

15.1X53-D55740 WAll 48 portsNot available48 Gigabit

18.1R2740 WAll 48 portsNot available48 Gigabit

EX2300 Switch Hardware and CLI Terminology Mapping

This topic describes the hardware terms used in EX2300 switch documentation and the corresponding terms used in the Junos OS CLI. See Table 4 on page 34.

Table 4: CLI Equivalents of Terms Used in Documentation for EX2300 Switches

Value Hardware Item (as Displayed in the CLI)

Description (as Displayed in the CLI)

(as

Displayed

in the

CLI)

Item in Documentation

Additional Information

Chassis

FPC (n)

EX2300-C-12T

•

EX2300-C-12P

•

EX2300-24T

•

EX2300-24P

•

EX2300-24MP

•

EX2300-24T-DC

•

EX2300-48T

•

EX2300-48P

•

EX2300-48MP

•

Abbreviated name of the Flexible PIC Concentrator (FPC)

One of the following:

EX2300-C-12T

•

EX2300-C-12P

•

EX2300-24T

•

EX2300-24P

•

EX2300-24MP

•

EX2300-24T-DC

•

EX2300-48T

•

EX2300-48P

•

EX2300-48MP

•

–One of the following:

Value

of n is

always

Switch chassis

does not have actual FPCs. In this case, FPC refers to the switch itself.

“Chassis Physical Specifications for EX2300 Switches” on page 37

Understanding Interface Naming ConventionsThe switch

On EX2300 Virtual Chassis:

Member ID of the

•

switch within the Virtual Chassis

n is a

value

in the

range

of 0

through

Understanding Virtual Chassis ComponentsIn this case, the FPC number refers to the member ID assigned to the switch.

Table 4: CLI Equivalents of Terms Used in Documentation for EX2300 Switches (continued)

Value Hardware Item (as Displayed in the CLI)

Description (as Displayed in the CLI)

(as

Displayed

in the

CLI)

Item in Documentation

Additional Information

PIC (n)

Abbreviated name of the Physical Interface Card (PIC)

12x 10/100/1000

•

BASE-T

16x10M/100M/1G

•

Base-T & 8x100M/1G/2.5G Base-T

24x 10/100/1000

•

BASE-T

48x 10/100/1000

•

BASE-T

32x10/100/1G

•

Base-T & 16x100M/1G/2.5G Base-T

n is a

value

in the

range

through

PIC 0One of the following:

Understanding Interface Naming ConventionsThe switch does not have actual PIC devices; see entries for PIC 0 through PIC 1 for the equivalent item on the switch

“EX2300 Switches Hardware Overview” on page 19Built-in

RJ-45 network ports on the front panel of the switch

PIC 1

“EX2300 Switches Hardware Overview” on page 19Built-in

uplink ports on the front panel of the switch

Table 4: CLI Equivalents of Terms Used in Documentation for EX2300 Switches (continued)

Value Hardware Item (as Displayed in the CLI)

Description (as Displayed in the CLI)

One of the following:

2x10G SFP/SFP+

•

4x10G SFP/SFP+

•

4x1G/10G

•

SFP/SFP+

6x10G SFP/SFP+

•

6x1G/10G

•

SFP/SFP+

(as

Displayed

in the

CLI)

Item in Documentation

Additional Information

Xcvr (n)

Supply (n)

Fan Tray

Abbreviated name of the transceiver

Built-in power supplyPower

NOTE: EX2300-C

switches are fanless models.

n is a

value

equivalent

to the

number

of the

port in

which

the

transceiver

installed.

Value

of n is

always

Optical transceivers

supply or DC power supply

“Pluggable Transceivers Supported on EX2300 Switches” on page 80

“Power Supply in EX2300 Switches” on page 56AC power

“EX2300 Cooling System” on page 50Fan–Fan

Chassis Physical Specifications for EX2300 Switches

The EX2300 switch chassis is a rigid sheet-metal structure that houses the hardware components.

Table 5 on page 37 summarizes the physical specifications of the EX2300 switch chassis.

Table 5: Physical Specifications of the EX2300 Switch Chassis

EX2300 ValueEX2300-C ValueDescription

Chassis width

1.72 in. (4.36 cm)Chassis height

10.98 in. (27.9 cm)

•

18.86 in. (47.9 cm) with mounting brackets

•

attached

9.45 in. (23.8 cm)Chassis depth

All models except EX2300-24MP and

•

EX2300-48MP—1.75 in.(4.45 cm)

EX2300-24MP and EX2300-48MP

•

models—1.7 in. (4.33 cm)

All models except EX2300-24MP and

•

EX2300-48MP

17.4 in. (44.19 cm)

•

19 in. (48.26 cm) with mounting brackets

•

attached

EX2300-24MP and EX2300-48MP models

•

17.36 in. (44.09 cm)

•

18.95 in. (48.13 cm) with mounting

•

brackets attached

All models except EX2300-24MP and

•

EX2300-48MP

Models without PoE capability: 10.2 in.

•

(25.9 cm) Models with PoE capability: 12.2 in.

•

(30.98 cm)

Weight

EX2300-C-12T: 5.45 lb (2.48 kg)

•

EX2300-C-12P: 6.99 lb (3.17 kg)

•

EX2300-24MP—10 in. (25.4 cm)

•

EX2300-48MP—14.45 in. (36.71 cm)

•

EX2300-24T: 7.25 lb (3.29 kg)

•

EX2300-24P: 9.89 lb (4.49 kg)

•

EX2300-24MP: 8.8 lb (4 kg)

•

EX2300-24T-DC: 7.83 lb (3.55 kg)

•

EX2300-48T: 8.28 lb (3.76 kg)

•

EX2300-48P: 11.06 lb (5.02 kg)

•

EX2300-48MP: 14.33 lb (6.5 kg)

•

SEE ALSO

Installing and Connecting an EX2300 Switch | 104

EX2300 Chassis

IN THIS SECTION

Chassis Status LEDs in EX2300 Switches | 38

Management Port LEDs in EX2300 Switches | 43

RJ-45 Network Port LEDs and Uplink Port LEDs in EX2300 Switches | 45

Chassis Status LEDs in EX2300 Switches

The front panel of EX2300 switches except the EX2300-24MP and EX2300-48MP models has three chassis status LEDs labeled SYS, ALM, and MST. See Figure 16 on page 38 and Figure 17 on page 39.

Figure 16: Chassis Status LEDs in EX2300-C Switches

1—Chassis Status LEDs

Figure 17: Chassis Status LEDs in EX2300 Switches Except the EX2300-C, EX2300-24MP and EX2300-48MP Models

1—Chassis Status LEDs

Table 6 on page 39 describes the chassis status LEDs in EX2300 switches except the EX2300-24MP and

EX2300-48MP models, their colors and states, and the status they indicate.

Table 6: Chassis Status LEDs in EX2300 Switches Except the EX2300-24MP and EX2300-48MP Models

State and DescriptionColorLED Label

GreenSYS

On steadily—Junos OS for EX Series

•

switches has been loaded on the switch.

Blinking—The switch is booting.

•

Off—The switch is powered off or is

•

halted.

Table 6: Chassis Status LEDs in EX2300 Switches Except the EX2300-24MP and EX2300-48MP Models (continued)

State and DescriptionColorLED Label

RedALM

Yellow

There is a major alarm.

NOTE: When you connect power to the

switch, the alarm LED (ALM) glows red. This behavior is normal. Plugging an active Ethernet cable into the management port (MGMT) on the switch completes the network link and turns off the ALM LED. (See “Connect a Device to a Network for

Out-of-Band Management” on page 144.)

Connecting the switch to a dedicated management console instead of a network does not affect the ALM LED. The LED remains red until the switch is connected to a network.

There is a minor alarm.

NOTE: The ALM LED glows yellow if you

commit a configuration to make it active on the switch without creating a rescue configuration to back it up. To save the most recently committed configuration as the rescue configuration, enter the operational mode command request system configuration rescue save.

There is no alarm or the switch is halted.Unlit

Table 6: Chassis Status LEDs in EX2300 Switches Except the EX2300-24MP and EX2300-48MP

g022330

Models (continued)

State and DescriptionColorLED Label

GreenMST

In a standalone EX2300 switch:

On steadily—The switch is functioning

•

normally as the primary.

Off—The switch is powered off or is

•

halted.

In a Virtual Chassis configuration:

On steadily—The switch is functioning

•

normally and is the primary in the Virtual Chassis configuration.

Blinking—The switch is functioning

•

normally and is the backup in the Virtual Chassis configuration.

Off—The switch is a linecard member in

•

the Virtual Chassis configuration or is halted.

A major alarm (red) indicates a critical error condition that requires immediate action.

A minor alarm (yellow) indicates a noncritical condition that requires monitoring or maintenance. A minor alarm that is left unchecked might cause interruption in service or performance degradation.

All three LEDs can be lit simultaneously.

On EX2300 switches except the EX2300-24MP and EX2300-48MP models, you can view the colors of the two LEDs remotely through the CLI by issuing the operational mode command show chassis led.

The front panel of EX2300-24MP and EX2300-48MP models has three system LEDs labeled MGT, FAN, and PW. See Figure 18 on page 41 and Figure 19 on page 42.

Figure 18: System LEDs in EX2300-24MP Models

1—System LEDs

Figure 19: System LEDs in EX2300-48MP Models

g022333

1—System LEDs

Table 7 on page 42 describes the system LEDs in EX2300-24MP and EX2300-48MP models, their colors

and states, and the status they indicate.

Table 7: System LEDs in EX2300-24MP and EX2300-48MP Models

State and DescriptionColorLED Label

GreenMGT

Unlit

Amber—blinking

On steadily—Junos OS for EX Series

•

switches has been loaded on the switch.

Blinking—The switch is booting.

•

Off—The switch is powered off or is

•

halted.

At least one of the fans has failed.Amber—blinkingFAN

The fans are functioning normally.Green—on steadily

There is no alarm or the switch is powered off or halted.

The power supply is functioning normally.Green—on steadilyPW

The supply of PoE power to RJ-45 network ports is disabled and the supply PoE/PoE+ power to devices connected to those ports is disabled.

The switch is powered off or halted.Unlit

SEE ALSO

Chassis Component Alarm Conditions on EX2300 Switches | 226

Check Active Alarms with the J-Web Interface | 227 Understand Alarm Types and Severity Levels on EX Series Switches | 224

Management Port LEDs in EX2300 Switches

The management port on an EX2300 switch has two LEDs that indicate link/activity and port status. The EX2300 switches except the EX2300-C switch and EX2300-24MP and EX2300-48MP models have the management port on the rear panel; the EX2300-C switches and EX2300-24MP and EX2300-48MP models have the management port on the front panel. See Figure 20 on page 43, Figure 21 on page 43,

Figure 22 on page 44, and Figure 23 on page 44.

Figure 20: LEDs on the Management Port on EX2300-C Switches

2—1— Status LEDLink/Activity LED

Figure 21: LEDs on the Management Port on EX2300 Switches Except EX2300-24MP and EX2300-48MP Models

2—1— Status LEDLink/Activity LED

Table 8 on page 44 describes the Link/Activity LED on the management port on EX2300 switches except

the EX2300-24MP and EX2300-48MP switch models.

Table 8: Link/Activity LED on the Management Port on EX2300 Switches Except the EX2300-24MP and

g022327

1 2

g022331

1 2

EX2300-48MP Switch Models

State and DescriptionColorLED

GreenLink/Activity

Blinking—The port and the link are active, and there is link activity.

•

Off—The port is not active.

•

Table 9 on page 44 describes the Status LED on the management port on EX2300 switches except the

EX2300-24MP and EX2300-48MP switch models.

Table 9: Status LED on the Management Port on EX2300 Switches Except the EX2300-24MP and EX2300-48MP Switch Models

State and DescriptionColorLED

GreenStatus

Indicates the speed. The speed indicators are:

Off—Link speed is 10 Mbps.

•

Blinking—Link speed is 100 Mbps.

•

On Steadily—Link speed is 1000 Mbps.

•

Figure 22: LEDs on the Management Port on EX2300-24MP Switches

2—1— Activity LEDLink LED

Figure 23: LEDs on the Management Port on EX2300-48MP Switches

2—1— Activity LEDLink LED

Table 10 on page 45 describes the Link LED on the management port on EX2300-24MP and EX2300-48MP

switch models.

Table 10: Link LED on the Management Port on EX2300-24MP and EX2300-48MP Switch Models

g041128

Link/ Activity

Status

State and DescriptionColorLED

GreenLink

On steadily—The port and the link are active.

•

Off—The link is not active or the port is not active.

•

Table 11 on page 45 describes the Activity LED on the management port on EX2300-24MP and

EX2300-48MP switch models.

Table 11: Activity LED on the Management Port on EX2300-24MP and EX2300-48MP Switch Models

State and DescriptionColorLED

GreenActivity

Blinking—The port and the link are active, and there is link activity.

•

Off—There is no link is not active.

•

SEE ALSO

Connect a Device to a Network for Out-of-Band Management | 144

RJ-45 Network Port LEDs and Uplink Port LEDs in EX2300 Switches

Each RJ-45 network port and uplink port on the front panel of EX2300 switches except the EX2300-24MP and EX2300-48MP switch models have two LEDs that indicate link/activity and port status. See

Figure 24 on page 45, Figure 25 on page 46, and Figure 26 on page 46.

Figure 24: LEDs on RJ-45 Network Ports on EX2300 Switches Except the EX2300-24MP and EX2300-48MP Switch Models

Figure 25: LEDs on the Uplink Ports in EX2300-C Switches

g022229

1—LEDs on the uplink ports

Figure 26: LEDs on the Uplink Ports in an EX2300 Switches Except the EX2300-C, EX2300-24MP, and EX2300-48MP Switche Models

1—LEDs on the uplink ports

Table 12 on page 46 describes the Link/Activity LED on EX2300 switches except the EX2300-24MP and

EX2300-48MP models.

Table 12: Link/Activity LED on the RJ-45 Network Ports and Uplink Ports in EX2300 Switches Except the EX2300-24MP and EX2300-48MP Models

State and DescriptionColorLED

GreenLink/Activity

Blinking—The port and the link are active, and there is link activity;

•

or the switch is transitioning to the EZSetup mode.

On steadily—The port and the link are active, but there is no link

•

activity; or the switch is reverting to the factory default configuration.

Off—The port is not active.

•

Figure 27 on page 47 shows the LEDs on EX2300 switches except the EX2300-24MP and EX2300-48MP

models that indicate the status of one of the four port parameters—speed, duplex mode, administrative status, and Power over Ethernet (PoE) status. Use the Factory Reset/Mode button on the far right side of the front panel to toggle the Status LED to show the different port parameters for RJ-45 network ports. You can tell which port parameter is indicated by the Status LED by looking at which port status mode LED (SPD, DX, EN, and PoE) is lit. The LED labeled PoE is not available on switch models with RJ-45 network ports that do not provide PoE.

Figure 27: Port Mode LEDs on EX2300 Switches Except the EX2300-24MP and EX2300-48MP Models

g022204

1—Port mode LEDs

Table 13 on page 47 describes the Status LED on the RJ-45 network ports in EX2300 switches except the

EX2300-24MP and EX2300-48MP switch models.

Table 13: Status LED on the RJ-45 Network Ports in EX2300 Switches Except the EX2300-24MP and EX2300-48MP Models

State and DescriptionPort Parameters

Speed (SPD)

Duplex mode (DX)

NOTE: On EX2300-24T switches,

only the ports labeled 0/0 through 0/15 support half-duplex. On

EX2300-48T switches, only the ports labeled 0/0 through 0/15 and 0/24 through 0/39 support half-duplex.

Administrative status (EN)

Indicates the speed. The speed indicators are:

Unlit—10 Mbps

•

Blinking—100 Mbps

•

On steadily—1000 Mbps

•

Indicates the duplex mode. The status indicators are:

Green—Port is set to full-duplex mode.

•

Unlit—Port is set to half-duplex mode.

•

Indicates the administrative status. The status indicators are:

Green—Port is administratively enabled.

•

Unlit—Port is administratively disabled.

•

Table 13: Status LED on the RJ-45 Network Ports in EX2300 Switches Except the EX2300-24MP and EX2300-48MP Models (continued)

State and DescriptionPort Parameters

PoE status (PoE)

Indicates the PoE status. The status indicators are:

On steadily—PoE is enabled on the port and a device is drawing power.

•

Blinking—PoE is enabled on the port, but no power is drawn from the port.

•

Unlit—PoE is not enabled on the port.

•

NOTE: The PoE Status LED is available on the following EX2300 switch

models:

EX2300-C-12P

•

EX2300-24P

•

EX2300-48P

•

Starting in Junos OS Release 19.4R1, you can use the request chassis beacon command on EX2300 switches except the EX2300-24MP and EX2300-48MP switch models to identify the switch or a port on the switch. When you execute the command, the status LEDs on the RJ-45 network ports blink two times per second irrespective of the mode the ports are operating in (see How to Locate a Device or Port Using the Chassis Beacon).

The uplink ports operate in full-duplex mode and PoE is not applicable on uplink ports. The Status LED on uplink ports indicate the Speed (SPD) and Administrative status (EN). Table 14 on page 48 describes the Status LED on the uplink ports in EX2300 switches except the EX2300-24MP and EX2300-48MP switch models.

Table 14: Status LED on the Uplink Ports in EX2300 Switches Except the EX2300-24MP and EX2300-48MP Models

State and DescriptionLED

Status LED

Indicates the speed and administrative status. The indicators are:

On steadily—10 Gbps

•

Blinking—1 Gbps

•

Unlit—The port is administratively disabled or the link is down.

•

On EX2300 switches except the EX2300-24MP and EX2300-48MP models, you can tell which port parameter is indicated by the Status LED on RJ-45 network ports and uplink ports by issuing the operational mode command show chassis led.

Each RJ-45 network port and uplink port on the front panel of EX2300-24MP and EX2300-48MP switch models has one LED that indicates link/activity. See Figure 28 on page 49, Figure 29 on page 49,

Figure 30 on page 49, and Figure 31 on page 49.

Figure 28: LED on RJ-45 Network Ports in EX2300-24MP Switches

g022326

g022329

g022328

g022332

1—LED on RJ-45 ports

Figure 29: LED on RJ-45 Network Ports in EX2300-48MP Switches

1—LED on RJ-45 ports

Figure 30: LED on the Uplink Ports in EX2300-24MP Switches

1—LED on the uplink ports

Figure 31: LED on the Uplink Ports in EX2300-48MP Switches

1—LED on the uplink ports

Table 15 on page 50 describes the Link/Activity LED on the RJ-45 network ports and uplink ports in

EX2300-24MP and EX2300-48MP models.

Table 15: Link/Activity LED on the RJ-45 Network Ports and Uplink Ports in EX2300-24MP and EX2300-48MP Models

State and DescriptionColorLED

GreenLink/Activity

On steadily—The port and the link are active, but there is no link

•

activity.

Blinking—The port and the link are active, and there is link activity.

•

Off—The port is not active.

•

You can tell:

The speed and duplex mode at which a port is operating in by issuing the command show interfaces

•

media.

The administrative status on each port by issuing the command show interfaces terse.

•

The PoE status on each port by issuing the command show poe interface.

•

EX2300 Cooling System

IN THIS SECTION

Airflow Direction in EX2300 Switches with 24 Ports with PoE Capability Except the EX2300-24MP Switch Model | 51

Airflow Direction in EX2300-24MP Switch Model | 51

Airflow Direction in EX2300 Switches with 48 Ports with PoE Capability Except the EX2300-48MP Switch Model | 52

Airflow Direction in EX2300-48MP Switch Model | 53

Airflow Direction in EX2300 Switches without PoE Capability | 54

The cooling system in EX2300 switches—except EX2300-C which is the compact, fanless model, EX2300-24MP, and EX2300-48MP models—consists of two fans built-in along the rear of the chassis that provide front-to-back chassis cooling.

The cooling system in EX2300-C switches consists of the vents on the top of the chassis and the heatsinks installed in the rear panel in PoE models. Do not block the vents on the chassis; doing so can lead to overheating of the switch chassis.

The cooling system in EX2300-24MP switches consists of three fans built in along the right side panel of the chassis that provide side-to-side chassis cooling. The cooling system in EX2300-48MP switches consists of four fans built in along the right side panel of the chassis that provide side-to-side chassis cooling.

Airflow Direction in EX2300 Switches with 24 Ports with PoE Capability Except the EX2300-24MP Switch Model

Figure 32 on page 51 shows the airflow in EX2300 switches with 24 ports with PoE capability except the

EX2300-24MP switch model.

Figure 32: Airflow Direction in EX2300 Switches with 24 Ports with PoE Capability Except the EX2300-24MP Switch Model

Airflow Direction in EX2300-24MP Switch Model

Figure 33 on page 52 shows the airflow in the EX2300-24MP switch model and Figure 34 on page 52

shows the built-in fans.

Figure 33: Airflow Direction in the EX2300-24MP Switch Model

g0 22324

Front

Rear

g0 22322

Figure 34: Fans Built-in on the EX2300-24MP Switch Model

1—Built-in fans

Airflow Direction in EX2300 Switches with 48 Ports with PoE Capability Except the EX2300-48MP Switch Model

Figure 35 on page 53 shows the airflow in EX2300 switches with 48 ports with PoE capability except the

EX2300-48MP switch model.

Figure 35: Airflow Direction in EX2300 Switches with 48 Ports with PoE Capability Except the EX2300-48MP Switch Model

Airflow Direction in EX2300-48MP Switch Model

Figure 36 on page 54 shows the airflow in the EX2300-48MP switch model and Figure 37 on page 54

shows the built-in fans.

Figure 36: Airflow Direction in the EX2300-48MP Switch Model

g0 22325

Front

Rear

g022323

Figure 37: Fans Built-in on the EX2300-48MP Switch Model

1—Built-in fans

Airflow Direction in EX2300 Switches without PoE Capability

Figure 38 on page 55 shows the airflow in EX2300 switches without PoE capability.

Figure 38: Airflow Direction in EX2300 Switches with 24 Ports without PoE Capability

Under normal operating conditions, the fans operate at a moderate speed to reduce noise. Temperature sensors in the chassis monitor the temperature within the chassis. If any fan fails or if the temperature inside the chassis rises above the threshold, the switch raises an alarm and all functioning fans operate at a higher speed than normal. If the temperature inside the chassis rises above the threshold, the switch shuts down automatically.

EX2300 Power System

IN THIS SECTION

Power Supply in EX2300 Switches | 56

Power Specifications for EX2300 Switches | 57

AC Power Cord Specifications for EX2300 Switches | 59

Power Supply in EX2300 Switches

The power supply in EX2300 switches is built in along the rear panel of the chassis, with an AC power cord inlet or DC power terminals on the rear panel to connect power to the switch.

NOTE: After powering on the switch, wait for at least 60 seconds before powering it off. After

powering off the switch, wait for at least 60 seconds before powering it back on.

Table 16 on page 56 lists the power consumed by each EX2300 switch model.

Table 16: Power Consumed by EX2300 Switches

Number of PoE-Enabled PortsModel Number

12EX2300-C-12P

24EX2300-24P

Maximum Power Consumed by the Switch

is drawn)

Maximum PoE/PoE+ Power Available

–20 W–EX2300-C-12T

124 W24 W (when no PoE power

–55 W–EX2300-24T

370 W80 W (when no PoE power

24EX2300-24MP

is drawn)

380 W55 W (when no PoE power

–55 W–EX2300-24T-DC

Table 16: Power Consumed by EX2300 Switches (continued)

Number of PoE-Enabled PortsModel Number

48EX2300-48P

48EX2300-48MP

Maximum Power Consumed by the Switch

is drawn

SEE ALSO

Connecting AC Power to an EX2300 Switch | 138 Connecting DC Power to an EX2300 Switch | 141

Power Specifications for EX2300 Switches

Maximum PoE/PoE+ Power Available

–76 W–EX2300-48T

740 W91 W (when no PoE power

740 W90 W (when no PoE power

This topic describes the power supply electrical specifications for EX2300 switches.

Table 17 on page 57 provides the AC power supply electrical specifications for EX2300 switches.

Table 18 on page 58 provides the DC power supply electrical specifications for EX2300 switches.

Table 17: AC Power Supply Electrical Specifications for EX2300 Switches

SpecificationItem

100 through 240 VACAC input supply

50 Hz/60 Hz nominalAC input line frequency

Table 17: AC Power Supply Electrical Specifications for EX2300 Switches (continued)

SpecificationItem

AC system current rating

EX2300-C-12T: 1 A at 100 VAC

•

EX2300-C-12T: 0.5 A at 240 VAC

•

EX2300-C-12P: 2.5 A at 100 VAC

•

EX2300-C-12P: 1.25 A at 240 VAC

•

EX2300-24T: 2.5 A at 100 VAC

•

EX2300-24T: 1.25 A at 240 VAC

•

EX2300-24P: 7 A at 100 VAC

•

EX2300-24P: 3.5 A at 240 VAC

•

EX2300-24MP: 2.5 A at 240 VAC and 5.4 A at 100 VAC

•

EX2300-48T: 1.2 A at 100 VAC

•

EX2300-48T: 0.6 A at 240 VAC

•

EX2300-48P: 12 A at 100 VAC

•

EX2300-48P: 6 A at 240 VAC

•

EX2300-48MP: 4.8 A at 240 VAC and 10.6 A at 100 VAC

•

Table 18: DC Power Supply Electrical Specifications for EX2300 Switches (Except EX2300-C, EX2300-24MP, and EX2300-48MP Switches)

SpecificationItem

–48 through –60 VDCDC input voltage

2.8 A maximumDC input current

100 WPower supply output

5 ms minimumOutput holdup time

NOTE: For DC power supplies, we recommend that you provide at least 2.8 A at 48 VDC and

use a facility circuit breaker rated for 10 A minimum. Doing so enables you to operate the switch in any configuration without upgrading the power infrastructure, and enables the switch to function at full capacity using multiple power supplies.

AC Power Cord Specifications for EX2300 Switches

A detachable AC power cord is supplied with the AC power supplies. The coupler is type C13 as described by International Electrotechnical Commission (IEC) standard 60320. The plug at the male end of the power cord fits into the power source outlet that is standard for your geographical location.

CAUTION: The AC power cord provided with each power supply is intended for use

with that power supply only and not for any other use.

NOTE: In North America, AC power cords must not exceed 4.5 meters 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 supplied with the switch are in compliance.

Table 19 on page 59 gives the AC power cord specifications for the countries and regions listed in the

table.

Table 19: AC Power Cord Specifications

Juniper Model NumberPlug StandardsElectrical SpecificationsCountry/Region

CBL-EX-PWR-C13-ARIRAM 2073 Type RA/3250 VAC, 10 A, 50 HzArgentina

250 VAC, 10 A, 50 HzAustralia

SAA/3

Switzerland, and United Kingdom)

CBL-EX-PWR-C13-AUAS/NZZS 3112 Type

CBL-EX-PWR-C13-BRNBR 14136 Type BR/3250 VAC, 10 A, 50 HzBrazil

CBL-EX-PWR-C13-CHGB 1002-1996 Type PRC/3250 VAC, 10 A, 50 HzChina

CBL-EX-PWR-C13-EUCEE (7) VII Type VIIG250 VAC, 10 A, 50 HzEurope (except Italy,

CBL-EX-PWR-C13-INIS 1293 Type IND/3250 VAC, 10 A, 50 HzIndia

Japan

CBL-EX-PWR-C13-ILSI 32/1971 Type IL/3G250 VAC, 10 A, 50 HzIsrael

CBL-EX-PWR-C13-ITCEI 23-16 Type I/3G250 VAC, 10 A, 50 HzItaly

CBL-EX-PWR-C13-JPSS-00259 Type VCTF125 VAC, 12 A, 50 Hz or 60

Table 19: AC Power Cord Specifications (continued)

Juniper Model NumberPlug StandardsElectrical SpecificationsCountry/Region

Korea

250 VAC, 10 A, 50 HzSouth Africa

ZA/13

Taiwan

50 Hz

CBL-EX-PWR-C13-KRCEE (7) VII Type VIIGK250 VAC, 10 A, 50 Hz or 60

CBL-EX-PWR-C13-USNEMA 5-15 Type N5-15125 VAC, 13 A, 60 HzNorth America

CBL-EX-PWR-C13-SASABS 164/1:1992 Type

CBL-EX-PWR-C13-SZSEV 6534-2 Type 12G250 VAC, 10 A, 50 HzSwitzerland

CBL-EX-PWR-C13-TWNEMA 5-15P Type N5-15P125 VAC, 11 A and 15 A,

CBL-EX-PWR-C13-UKBS 1363/A Type BS89/13250 VAC, 10 A, 50 HzUnited Kingdom

Figure 39 on page 60 illustrates the plug on the power cord for some of the countries or regions listed in Table 19 on page 59.

Figure 39: AC Plug Types

CHAPTER

Site Planning, Preparation, and

Specifications

Site Preparation Checklist for EX2300 Switches | 62

EX2300 Site Guidelines and Requirements | 63

EX2300 Network Cable and Transceiver Planning | 79

EX2300 Management Cable Specifications and Pinouts | 87

EX2300 Virtual Chassis | 98

Site Preparation Checklist for EX2300 Switches

The checklist in Table 20 on page 62 summarizes the tasks you need to perform when preparing a site for EX2300 switch installation.

Table 20: Site Preparation Checklist

Environment

DatePerformed byFor More InformationItem or Task

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

Power

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

Locate sites for connection of system grounding.

Calculate the power consumption and requirements.

Hardware Configuration

you want to install.

“Environmental Requirements and Specifications for EX Series Switches” on page 64

“Power Specifications for EX2300 Switches” on page 57

“EX2300 Switches Hardware Overview” on page 19Choose the number and types of switches

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.

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

“Rack Requirements” on page 70

“Cabinet Requirements” on page 71

“Clearance Requirements for Airflow and Hardware Maintenance for EX2300 Switches” on page 73

Table 20: Site Preparation Checklist (continued)

Desk or Wall

DatePerformed byFor More InformationItem or Task

Verify that the wall meets the minimum requirements for the installation of the switch.

Verify that there is appropriate clearance in your selected location.

Cables

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.

“Requirements for Mounting an EX2300 Switch On or Under a Desk or Other Level Surface or On a Wall” on page 72

“Clearance Requirements for Airflow and Hardware Maintenance for EX2300 Switches” on page 73

EX2300 Site Guidelines and Requirements

IN THIS SECTION

Environmental Requirements and Specifications for EX Series Switches | 64

General Site Guidelines | 69

Site Electrical Wiring Guidelines | 69

Rack Requirements | 70

Cabinet Requirements | 71

Requirements for Mounting an EX2300 Switch On or Under a Desk or Other Level Surface or On a Wall | 72

Clearance Requirements for Airflow and Hardware Maintenance for EX2300 Switches | 73

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 64 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

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.

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

EX2200 (except EX2200-C switches)

EX2300-C

EX2300 (except EX2300-C switches)

EX3200

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

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

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 104°

F (40° 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.

EX3300

EX3400

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)

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.

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 70 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

You can mount the device on two-post racks or four-post racks.

Rack requirements consist of:

Rack type

•

Mounting bracket hole spacing

•

Rack size and strength

•

Rack connection to the building structure

•

Table 23 on page 71 provides the rack requirements and specifications.

Table 23: Rack Requirements and Specifications

GuidelinesRack Requirement

Rack type

Mounting bracket hole spacing

Rack size and strength

Rack connection to building structure

You can mount the device on a rack that provides bracket holes or hole patterns spaced at 1-U (1.75 in. or 4.45 cm) increments and meets the size and strength requirements to support the weight.

A U is the standard rack unit defined by the Electronic Components Industry Association (http://www.ecianow.org).

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

Ensure that the rack complies with the size and strength standards of a 19-in. rack as defined

•

by the Electronic Components Industry Association (http://www.ecianow.org).

Ensure that the rack rails are spaced widely enough to accommodate the external dimensions

•

of the device chassis. The outer edges of the front mounting brackets extend the width of the chassis to 19 in. (48.2 cm).

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

•

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

•

device and rack.

Secure the rack to the building structure.

•

If your geographical area is earthquake-prone, secure the rack to the floor.

•

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

•

SEE ALSO

Rack-Mounting and Cabinet-Mounting Warnings | 262

Cabinet Requirements

You can mount the device in a cabinet that contains a 19-in. rack.

Cabinet requirements consist of:

Cabinet size

•

Clearance requirements

•

Cabinet airflow requirements

•

Table 24 on page 72 provides the cabinet requirements and specifications.

Table 24: Cabinet Requirements and Specifications

GuidelinesCabinet Requirement

Cabinet size

Cabinet clearance

Cabinet airflow requirements

The minimum cabinet size is 36 in. (91.4 cm) depth. Large cabinets improve airflow

•

and reduce chances of overheating.

The outer edges of the front mounting brackets extend the width of the chassis to

•

19 in. (48.2 cm).

The minimum total clearance inside the cabinet is 30.7 in. (78 cm) between the inside

•

of the front door and the inside of the rear door.

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

Ensure adequate cool air supply to dissipate the thermal output of the device or

•

devices.

Ensure that the hot air exhaust of the chassis exits the cabinet without recirculating

•

into the device. An open cabinet (without a top or doors) that employs hot air exhaust extraction from the top ensures 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.

Install the device in the cabinet in a way that maximizes the open space on the side

•

of the chassis that has the hot air exhaust.

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 is such that there is proper

•

clearance around the device and cabinet.

A cabinet larger than the minimum required provides better airflow and reduces the

•

chance of overheating.

Requirements for Mounting an EX2300 Switch On or Under a Desk or Other Level Surface or On a Wall

You can mount the switch on a desk or other level surface. You can mount the EX2300-C switch under a desk or other level surface. You can mount EX2300 switches except the EX2300-24MP and EX2300-48MP

models on a wall. When choosing a location, allow at least 6 in. (15.2 cm) of clearance between the front and back of the chassis and adjacent equipment or walls.

Ensure that the wall onto which the switch is installed is stable and securely supported.

If you are mounting the switch in sheetrock (wall board with a gypsum plaster core) or in wall board not backed by wall studs, use hollow wall anchors capable of supporting the combined weight of two fully loaded chassis. Insert the screws into wall studs wherever possible to provide added support for the chassis.

Use the wall-mount kit from Juniper Networks to mount the switch on a wall. The wall-mount kit is not part of the standard package and must be ordered separately.

SEE ALSO

Mounting an EX2300 Switch on a Desk or Other Level Surface | 106

Mounting an EX2300-C Switch Under a Desk or Other Level Surface by Using Screws | 108 Mounting an EX2300 Switch on a Wall | 117

Clearance Requirements for Airflow and Hardware Maintenance for EX2300 Switches

When planning the site for installing an EX2300 switch, you must allow sufficient clearance around the installed switch. Figure 40 on page 74 shows the clearance requirements for the EX2300-C switches.

Figure 41 on page 74 shows the clearance requirements for EX2300 switches, except the EX2300-C,

EX2300-24MP, and EX2300-48MP switches, with PoE capability. Figure 42 on page 75 shows the clearance requirements for EX2300-24MP switches. Figure 43 on page 76 shows the clearance requirements for EX2300-48MP switches.

Figure 40: Clearance Requirements for Airflow and Hardware Maintenance for EX2300-C Switches

Figure 41: Clearance Requirements for Airflow and Hardware Maintenance for EX2300 Switches Except EX2300-C, EX2300-24MP, and EX2300-48MP Switches

Figure 42: Clearance Requirements for Airflow and Hardware Maintenance for EX2300-24MP Switches

g0 22334

17.36 in.

(44.09 cm)

18.95 in.

(48.13 cm)

10.00 in.

(25.40 cm)

Clearance required

for maintenance

24 in. ( 6 1cm)

Front

(Ports)

Rear

Clearance required

for maintenance

24 in. ( 6 1cm)

Mounting

bracket

6 in. (15.24 cm)

for airflow

6 in. (15.24 cm)

for airflow

Figure 43: Clearance Requirements for Airflow and Hardware Maintenance for EX2300-48MP Switches

g0 22335

17.36 in.

(44.09 cm)

18.95 in.

(48.13 cm)

14.45 in.

(36.70 cm)

Clearance required

for maintenance

24 in. ( 6 1 cm)

Front

(Ports)

Rear

Clearance required

for maintenance

24 in. ( 6 1 cm)

Mounting

bracket

6 in. (15.24 cm)

for airflow

6 in. (15.24 cm)

for airflow

The power cord retainer clips in EX2300 switches except the EX2300-24MP and EX2300-48MP switches extend out of the rear of the chassis by 3 in. (7.6 cm).

Allow at least 6 in. (15.2 cm) of clearance on the side between devices that have fans installed. Allow

•

2.8 in. (7 cm) between the side of the chassis and any non-heat-producing surface such as a wall. For the cooling system to function properly, the airflow around the chassis must be unrestricted.

Figure 44 on page 77 shows the airflow in EX2300 switches with 24 ports with PoE capability, except

the EX2300-24MP switch. Figure 45 on page 77 shows the airflow in EX2300-24MP switch.

Figure 46 on page 78 shows the airflow in EX2300 switches with 48 ports with PoE capability, except

the EX2300-48MP switch. Figure 47 on page 78 shows the airflow in EX2300-48MP switch.

Figure 48 on page 79 shows the airflow in EX2300 switches without PoE capability.

Figure 44: Airflow Direction in EX2300 Switches with 24 Ports with PoE Capability Except the

g0 22324

Front

Rear

EX2300-24MP Switch

Figure 45: Airflow Direction in EX2300-24MP Switches

Figure 46: Airflow Direction in EX2300 Switches with 48 Ports with PoE Capability Except the

g0 22325

Front

Rear

EX2300-48MP Switch

Figure 47: Airflow Direction in EX2300-48MP Switches

Figure 48: Airflow Direction in EX2300 Switches without PoE Capability

If you are mounting an EX2300 switch in a rack or cabinet with other equipment, or if you are placing

•

it on or under a desk or floor near other equipment, ensure that the exhaust from other equipment does not blow into the intake vents of the chassis.

NOTE: You can mount only EX2300-C switches under a desk or other level surface.

Leave at least 24 in. (61 cm) in front of the switch and 6 in. (15.2 cm) behind the 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.

EX2300 Network Cable and Transceiver Planning

IN THIS SECTION

Pluggable Transceivers Supported on EX2300 Switches | 80

SFP+ Direct Attach Copper Cables for EX Series Switches | 81

Understanding EX Series Switches Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion | 83

Calculating the Fiber-Optic Cable Power Budget for EX Series Devices | 84

Calculating the Fiber-Optic Cable Power Margin for EX Series Devices | 85

Pluggable Transceivers Supported on EX2300 Switches

You can find the list of transceivers supported on EX2300 switches except EX2300-24MP and EX2300-48MP and information about those transceivers at the Hardware Compatibility Tool page for

EX2300.

You can find the list of transceivers supported on EX2300-24MP and EX2300-48MP switches and information about those transceivers at the Hardware Compatibility Tool page for EX2300 Multigigabit.

NOTE: We recommend that you use only optical transceivers and optical connectors purchased

from Juniper Networks with your Juniper Networks device.

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.

NOTE: EX2300-C switches ensure normal operation in the temperature range 32° F (0° C)

through 104° F (40° C) at altitudes up to 5,000 ft (1,524 m). In the temperature range 104° F (40° C) through 113° F (45° C) at altitudes up to 5,000 ft (1,524 m), use extended temperature range SFP transceivers.

The Gigabit Ethernet SFP and SFP+ transceivers installed in EX2300 switches support digital optical monitoring (DOM): You can view the diagnostic details for these transceivers by issuing the operational mode CLI command show interfaces diagnostics optics.

NOTE: The transceivers support DOM even if they are installed in uplink ports configured as

Virtual Chassis ports.

SEE ALSO

Install a Transceiver | 148 Remove a Transceiver | 210

SFP+ Direct Attach Copper Cables for EX Series Switches

IN THIS SECTION

Cable Specifications | 82

List of DAC Cables Supported on EX Series Switches | 82

Standards Supported by These Cables | 83

Small form-factor pluggable plus transceiver (SFP+) direct attach copper (DAC) cables, also known as Twinax cables, are suitable for in-rack connections between servers and switches. They are suitable for short distances, making them ideal for highly cost-effective networking connectivity within a rack and between adjacent racks.

NOTE: We recommend that you use only SFP+ DAC cables purchased from Juniper Networks

with your Juniper Networks device.

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

Cable Specifications

EX Series switches support SFP+ passive DAC cables. The passive Twinax cable is a straight cable with no active electronic components. EX Series switches support 1 m, 3 m, 5 m, and 7 m long SFP+ passive DAC cables. See Figure 49 on page 82.

Figure 49: SFP+ Direct Attach Copper Cables for EX Series Switches

The cables are hot-removable and hot-insertable: You can remove and replace them without powering off the switch or disrupting switch functions. A cable comprises a low-voltage cable assembly that connects directly into two 10-Gigabit Ethernet ports, one at each end of the cable. The cables use high-performance integrated duplex serial data links for bidirectional communication and are designed for data rates of up to 10 Gbps.

List of DAC Cables Supported on EX Series Switches

For the list of DAC cables supported on EX Series switches and the specifications of these cables, see:

EX2300—Hardware Compatibility Tool page for EX2300

•

EX3200—Hardware Compatibility Tool page for EX3200

•

EX3300—Hardware Compatibility Tool page for EX3300

•

EX3400—Hardware Compatibility Tool page for EX3400

•

EX4200—Hardware Compatibility Tool page for EX4200

•

EX4300—Hardware Compatibility Tool page for EX4300

•

EX4500—Hardware Compatibility Tool page for EX4500

•

EX4550—Hardware Compatibility Tool page for EX4550

•

EX4600—Hardware Compatibility Tool page for EX4600

•

EX8208—Hardware Compatibility Tool page for EX8208

•

EX8216—Hardware Compatibility Tool page for EX8216

•

EX9251—Hardware Compatibility Tool page for EX9251

•

EX9253—Hardware Compatibility Tool page for EX9253

•

Standards Supported by These Cables

The cables comply with the following standards:

SFP mechanical standard SFF-843— see ftp://ftp.seagate.com/sff/SFF-8431.PDF.

•

Electrical interface standard SFF-8432— see ftp://ftp.seagate.com/sff/SFF-8432.PDF.

•

SFP+ Multi-Source Alliance (MSA) standards

•

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

IN THIS SECTION

Signal Loss in Multimode and Single-Mode Fiber-Optic Cable | 83

Attenuation and Dispersion in Fiber-Optic Cable | 84

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 84).

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 25 on page 86 (here, the link is 2 km long and multimode, and the (PB) is 13 dBm):

Table 25: Estimated Values for Factors Causing Link Loss

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

Higher-order mode losses (HOL)

Modal and chromatic dispersion

Fiber attenuation

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

Multimode—1 dBm/km

•

Single mode—0.5 dBm/km

•

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

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

•

1 dBm1 dBmClock Recovery Module (CRM)

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):

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.

EX2300 Management Cable Specifications and Pinouts

IN THIS SECTION

Management Cable Specifications | 87

Console Port Connector Pinout Information | 88

USB Port Specifications for an EX Series Switch | 89

Mini-USB Port Pinout Specifications | 89

RJ-45 Management Port Connector Pinout Information | 90

RJ-45 Port, SFP Port, SFP+ Port, QSFP+ Port, and QSFP28 Port Connector Pinout Information | 91

SFP+ Uplink Port Connector Pinout Information for an EX2300 Switch | 96

RJ-45 to DB-9 Serial Port Adapter Pinout Information | 97

Management Cable Specifications

Table 26 on page 87 lists the specifications for the cables that connect the console and management ports

to management devices.

Table 26: Specifications of Cables to Connect to Management Devices

Additional InformationReceptacleCable SpecificationsPorts

RJ-45 Console port

RJ-45CAT5e UTP (unshielded

twisted pair) cable

“Connect a Device to a Management Console Using an RJ-45 Connector” on page 145

Management Ethernet port

RJ-45 connector

RJ-45Ethernet cable with an

“Connect a Device to a Network for Out-of-Band Management” on page 144

Table 26: Specifications of Cables to Connect to Management Devices (continued)

Additional InformationReceptacleCable SpecificationsPorts

Mini-USB Type-B Console port

standard-A and Mini-USB Type-B (5-pin) connector

Mini-USBMini-USB cable with

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 27 on page 88 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 27: Console Port Connector Pinout Information

DescriptionSignalPin

Request to sendRTS Output1

Data terminal readyDTR Output2

Transmit dataTxD Output3

Signal groundSignal Ground4

Signal groundSignal Ground5

Receive dataRxD Input6

Data carrier detectCD Input7

CTS InputNC8

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.

Mini-USB Port Pinout Specifications

If your management host (laptop or PC) does not have a DB-9 plug connector pin or an RJ-45 connector pin but has a USB port, you can connect your management host to the Mini-USB Type-B console port by using a cable that has a standard Type-A USB connector on one end and a Mini-USB Type-B (5-pin) connector on the other end.

The Mini-USB Type-B console port uses a Mini-USB Type-B connector to connect to a console management device. The default baud rate for the console port is 9600 baud.

Table 28 on page 90 provides the pinout information of the Mini-USB Type-B console port.

Table 28: Mini-USB Type-B Console Port Pinout Information

DescriptionSignalPin

+5 VDCVCC1

Data -D-2

Data +D+3

N/CX

Could be not connected (N/C), connected to ground (GND), or used as an attached device presence indicator

GroundGND4

RJ-45 Management Port Connector Pinout Information

Table 29 on page 90 provides the pinout information for the RJ-45 connector for the management port

on Juniper Networks devices.

Table 29: 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

RJ-45 Port, SFP Port, SFP+ Port, QSFP+ Port, and QSFP28 Port Connector Pinout Information

The tables in this topic describe the connector pinout information for the RJ-45, QSFP+, QSFP28, SFP+, and SFP ports.

Table 30 on page 91—10/100/1000BASE-T Ethernet network port connector pinout information

•

Table 31 on page 91—SFP network port connector pinout information

•

Table 32 on page 93—SFP+ network port connector pinout information

•

Table 33 on page 94—QSFP+ and QSFP28 network module ports connector pinout information

•

Table 30: 10/100/1000BASE-T Ethernet Network Port Connector Pinout Information

DescriptionSignalPin

TRP1+1

TRP1-2

TRP2+3

TRP2-6

Transmit/receive data pair 1

Negative Vport (in PoE models)

Transmit/receive data pair 1

Negative Vport (in PoE models)

Transmit/receive data pair 2

Positive Vport (in PoE models)

Transmit/receive data pair 3TRP3+4

Transmit/receive data pair 3TRP3-5

Transmit/receive data pair 2

Positive Vport (in PoE models)

Transmit/receive data pair 4TRP4+7

Transmit/receive data pair 4TRP4-8

Table 31: SFP Network Port Connector Pinout Information

DescriptionSignalPin

Module transmitter groundVeeT1

Table 31: SFP Network Port Connector Pinout Information (continued)

DescriptionSignalPin

Module transmitter faultTX_Fault2

Transmitter disabledTX_Disable3

2-wire serial interface data lineSDA4

2-wire serial interface clockSCL-5

Module absentMOD_ABS6

Rate selectRS7

Receiver loss of signal indicationRX_LOS8

Module receiver groundVeeR9

Module receiver groundVeeR10

Module receiver groundVeeR11

Receiver inverted data outputRD-12

Receiver noninverted data outputRD+13

Module receiver groundVeeR14

Module receiver 3.3 V supplyVccR15

Module transmitter 3.3 V supplyVccT16

Module transmitter groundVeeT17

Transmitter noninverted data inputTD+18

Transmitter inverted data inputTD-19

Module transmitter groundVeeT20

Table 32: SFP+ Network Port Connector Pinout Information

DescriptionSignalPin

Module transmitter groundVeeT1

Module transmitter faultTX_Fault2

Transmitter disabledTX_Disable3

2-wire serial interface data lineSDA4

2-wire serial interface clockSCL-5

Module absentMOD_ABS6

Rate select 0, optionally controls SFP+ module receiverRS07

Receiver loss of signal indicationRX_LOS8

Rate select 1, optionally controls SFP+ transmitterRS19

Module receiver groundVeeR10

Module receiver groundVeeR11

Receiver inverted data outputRD-12

Receiver noninverted data outputRD+13

Module receiver groundVeeR14

Module receiver 3.3-V supplyVccR15

Module transmitter 3.3-V supplyVccT16

Module transmitter groundVeeT17

Transmitter noninverted data inputTD+18

Transmitter inverted data inputTD-19

Module transmitter groundVeeT20

Table 33: QSFP+ and QSFP28 Network Port Connector Pinout Information

SignalPin

GND1

TX2n2

TX2p3

GND4

TX4n5

TX4p6

GND7

ModSelL8

LPMode_Reset9

VccRx10

SCL11

SDA12

GND13

RX3p14

RX3n15

GND16

RX1p17

RX1n18

GND19

GND20

RX2n21

Table 33: QSFP+ and QSFP28 Network Port Connector Pinout Information (continued)

SignalPin

RX2p22

GND23

RX4n24

RX4p25

GND26

ModPrsL27

IntL28

VccTx29

Vcc130

Reserved31

GND32

TX3p33

TX3n34

GND35

TX1p36

TX1n37

GND38

SFP+ Uplink Port Connector Pinout Information for an EX2300 Switch

EX2300-C switches have two 10-Gigabit Ethernet uplink ports that support 1-gigabit SFP transceivers and 10-gigabit SFP+ transceivers. EX2300 switches except the EX2300-C switch model have four 10-Gigabit Ethernet uplink ports that support SFP and SFP+ transceivers.

Table 34 on page 96 provides the pinout information for the SFP+ uplink port connector.

Table 34: Connector Pinout Information for the 10-Gigabit Ethernet Uplink Port

DescriptionSignalPin

Module transmitter groundVeeT1

Module transmitter faultTX_Fault2

Transmitter disabledTX_Disable3

2-wire serial interface data lineSDA4

2-wire serial interface clockSCL-5

Module absentMOD_ABS6

Rate select 0, optionally controls SFP+ module receiverRS07

Receiver loss of signal indicationRX_LOS8

Rate select 1, optionally controls SFP+ transmitterRS19

Module receiver groundVeeR10

Module receiver groundVeeR11

Receiver inverted data outputRD-12

Receiver noninverted data outputRD+13

Module receiver groundVeeR14

Module receiver 3.3 V supplyVccR15

Module transmitter 3.3 V supplyVccT16

Module transmitter groundVeeT17

Table 34: Connector Pinout Information for the 10-Gigabit Ethernet Uplink Port (continued)

DescriptionSignalPin

Transmitter noninverted data inputTD+18

Transmitter inverted data inputTD-19

Module transmitter groundVeeT20

SEE ALSO

See EX2300 Switches Hardware Overview | 19 for port location

RJ-45 to DB-9 Serial Port Adapter Pinout Information

The console port is an RS-232 serial interface that uses an RJ-45 connector to connect to a management device such as a laptop or a desktop PC. 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 to the device, use a combination of the RJ-45 to DB-9 socket adapter along with a USB to DB-9 plug adapter.

Table 35 on page 97 provides the pinout information for the RJ-45 to DB-9 serial port adapter.

Table 35: RJ-45 to DB-9 Serial Port Adapter Pinout Information

SignalDB-9 PinSignalRJ-45 Pin

CTS8RTS1

DSR6DTR2

RxD2TxD3

GND5GND4

TxD3RxD6

DTR4DSR7

RTS7CTS8

EX2300 Virtual Chassis

IN THIS SECTION

Planning EX2300 Virtual Chassis | 98

Understanding EX2300 Virtual Chassis Hardware Configuration | 98

Planning EX2300 Virtual Chassis

Before interconnecting EX2300 switches in a Virtual Chassis configuration, you must consider the following factors:

The number of switches in the Virtual Chassis and their location—You can interconnect a maximum of

•

four EX2300 switches to form a Virtual Chassis composed exclusively of EX2300 switches.

Mounting—You can mount the switches in a single rack or install them on multiple racks. For information

•

about the size and strength of racks, see “Rack Requirements” on page 70.

Cabling requirements for Virtual Chassis—You can interconnect EX2300 switches into a Virtual Chassis

•

by using the uplink ports configured as Virtual Chassis ports (VCPs).

Power requirements—You must plan the installation site to meet the power requirements of the switches

•

in a Virtual Chassis. See “Power Specifications for EX2300 Switches” on page 57.

License requirements—You must have license keys for all the devices. See Understanding Software Licenses

•

for EX Series Switches.

SEE ALSO

Understanding Virtual Chassis Components

Understanding EX2300 Virtual Chassis Hardware Configuration

Virtual Chassis is a feature in Juniper Networks EX2300 Ethernet Switches that allows you to interconnect two or more EX2300 switches, enabling them to operate as a unified, single, high-bandwidth switch. You

can interconnect a maximum of four EX2300 switches (including EX2300-C switches) by using the uplink ports configured as Virtual Chassis ports (VCPs) to form a Virtual Chassis.

All EX2300 switch models support Virtual Chassis, and you can interconnect different models, which allows you to choose among a range of possible port configurations within the same Virtual Chassis.

The Virtual Chassis configuration includes a primary switch and a backup switch, with all other switches in the configuration designated as linecard member switches. Virtual Chassis operation is managed through the primary switch. Each switch in the Virtual Chassis is assigned a unique member ID that is displayed on the switch LCD.

SEE ALSO

Understanding Virtual Chassis Components

CHAPTER

Initial Installation and Configuration

Unpacking and Mounting the EX2300 Switch | 101

Connecting the EX2300 to Power | 131

Connecting the EX2300 to External Devices | 144

Connecting the EX2300 to the Network | 148

Configuring Junos OS on the EX2300 | 151

Dashboard for EX Series Switches | 180

Juniper EX2300 Hardware Guide

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

EX2300 System Overview

EX2300 Switches Hardware Overview

Benefits of the EX2300 Switch

EX2300 Switches First View

Uplink Ports

Console Ports

Cable Guard

Security Slot

Power over Ethernet (PoE) Ports

Front Panel of an EX2300 Switch

Rear Panel of an EX2300 Switch

EX2300 Switch Models

EX2300 Switch Hardware and CLI Terminology Mapping

Chassis Physical Specifications for EX2300 Switches

EX2300 Chassis

Chassis Status LEDs in EX2300 Switches

Management Port LEDs in EX2300 Switches

RJ-45 Network Port LEDs and Uplink Port LEDs in EX2300 Switches

EX2300 Cooling System

Airflow Direction in EX2300 Switches with 24 Ports with PoE Capability Except the EX2300-24MP Switch Model

Airflow Direction in EX2300-24MP Switch Model

Airflow Direction in EX2300 Switches with 48 Ports with PoE Capability Except the EX2300-48MP Switch Model

Airflow Direction in EX2300-48MP Switch Model

Airflow Direction in EX2300 Switches without PoE Capability

EX2300 Power System

Power Supply in EX2300 Switches

Power Specifications for EX2300 Switches

AC Power Cord Specifications for EX2300 Switches

Site Preparation Checklist for EX2300 Switches

EX2300 Site Guidelines and Requirements

Environmental Requirements and Specifications for EX Series Switches

General Site Guidelines

Site Electrical Wiring Guidelines

Rack Requirements

Cabinet Requirements

Requirements for Mounting an EX2300 Switch On or Under a Desk or Other Level Surface or On a Wall

Clearance Requirements for Airflow and Hardware Maintenance for EX2300 Switches

EX2300 Network Cable and Transceiver Planning

Pluggable Transceivers Supported on EX2300 Switches

SFP+ Direct Attach Copper Cables for EX Series Switches

Cable Specifications

List of DAC Cables Supported on EX Series Switches

Standards Supported by These Cables

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

EX2300 Management Cable Specifications and Pinouts

Management Cable Specifications

Console Port Connector Pinout Information

USB Port Specifications for an EX Series Switch

Mini-USB Port Pinout Specifications

RJ-45 Management Port Connector Pinout Information

RJ-45 Port, SFP Port, SFP+ Port, QSFP+ Port, and QSFP28 Port Connector Pinout Information

SFP+ Uplink Port Connector Pinout Information for an EX2300 Switch

RJ-45 to DB-9 Serial Port Adapter Pinout Information

EX2300 Virtual Chassis

Planning EX2300 Virtual Chassis

Understanding EX2300 Virtual Chassis Hardware Configuration

Initial Installation and Configuration