Juniper EX4650 User Manual

EX4650 Switch Hardware Guide

Published

2021-03-07

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.

EX4650 Switch Hardware Guide

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

YEAR 2000 NOTICE

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

END USER LICENSE AGREEMENT

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

About the Documentation | x

Documentation and Release Notes | x

Using the Examples in This Manual | x

Merging a Full Example | xi

Merging a Snippet | xii

Documentation Conventions | xii

Documentation Feedback | xv

Requesting Technical Support | xv

Self-Help Online Tools and Resources | xvi

Creating a Service Request with JTAC | xvi

iii

Overview

EX4650 Switches System Overview | 18

EX4650 Switches Hardware Overview | 18

Benefits of the EX4650 Switch | 19

Software | 19

EX4650 Switch First View | 20

Virtual Chassis | 23

Power Supplies | 24

Cooling System | 25

EX4650 Switch Models | 25

Identifying EX4650 Switch Models | 27

Chassis Physical Specifications for EX4650 Switches | 28

Field-Replaceable Units in EX4650 Switches | 28

EX4650 Chassis | 29

Chassis Status LEDs on EX4650 Switches | 29

Management Port LEDs on EX4650 Switches | 31

Access Port and Uplink Port LEDs on EX4650 Switches | 31

EX4650 Cooling System | 33

Fan Modules | 34

Airflow Direction in EX4650 Switch Models | 35

Front-to-Back Airflow | 36

Back-to-Front Airflow | 37

Do Not Mix AIR IN (AFI) and AIR OUT (AFO) Components in the Switch | 38

Positioning the Switch | 39

Fan Module Status | 39

EX4650 Power System | 40

AC Power Supply in EX4650 Switches | 40

DC Power Supply in EX4650 Switches | 41

Airflow Direction in Power Supplies | 42

AC Power Supply Specifications for EX4650 Switches | 43

AC Power Cord Specifications for EX4650 Switches | 44

AC Power Supply LEDs in EX4650 Switches | 46

DC Power Supply in EX4650 Switches | 47

Characteristics of a DC Power Supply | 48

DC Power Supply Airflow | 49

DC Power Supply in EX4650 Switches | 50

Airflow Direction in Power Supplies | 51

EX4650 DC Power Specifications | 52

DC Power Supply LEDs in EX4650 Switches | 53

Site Planning, Preparation, and Specifications

Site Preparation Checklist for EX4650 Switches | 56

EX4650 Site Guidelines and Requirements | 57

Environmental Requirements and Specifications for EX4650 Switches | 57

General Site Guidelines | 59

Site Electrical Wiring Guidelines | 59

Rack Requirements for EX4650 Switches | 60

Cabinet Requirements for EX4650 Switches | 61

Clearance Requirements for Airflow and Hardware Maintenance for EX4650 Switches | 62

EX4650 Network Cable and Transceiver Planning | 64

Pluggable Transceivers Supported on EX4650 Switches | 64

SFP28 Direct Attach Copper Cables for EX4650 Switches | 65

Cable Specifications | 66

Standards Supported by These Cables | 66

QSFP28 Direct Attach Copper Cables for EX4650 Switches | 67

Cable Specifications | 67

Calculating the Fiber-Optic Cable Power Budget for EX Series Devices | 68

Calculating the Fiber-Optic Cable Power Margin for EX Series Devices | 68

EX4650 Management Cable Specifications and Pinouts | 70

Console Port Connector Pinout Information | 70

RJ-45 Management Port Connector Pinout Information | 71

RJ-45 to DB-9 Serial Port Adapter Pinout Information | 72

QSFP+, QSFP28, SFP, SFP+, and SFP28 Port Connector Pinout Information | 72

Initial Installation and Configuration

Unpacking and Mounting the EX4650 Switch | 78

Unpacking the Switch | 78

Parts Inventory (Packing List) for an EX4650 Switch | 79

Mounting an EX4650 Switch on Four Posts of a Rack or Cabinet | 80

Connecting the EX4650 to Power | 84

Connect the EX4650 Switch to Earth Ground | 84

Connecting AC Power to an EX4650 Switch | 86

Connecting DC Power to an EX4650 Switch | 88

Connecting the EX4650 to the Network | 93

Install a Transceiver | 93

Connect a Fiber-Optic Cable | 96

Connecting the EX4650 to External Devices | 97

Connect a Device to a Network for Out-of-Band Management | 97

Connect a Device to a Management Console Using an RJ-45 Connector | 98

Configuring Junos OS on the EX4650 | 100

EX4650 Switch Default Configuration | 100

Connecting and Configuring an EX4650 Switch | 101

Maintaining Components

Maintaining the EX4650 Cooling System | 106

Removing a Fan Module from an EX4650 Switch | 106

Installing a Fan Module in an EX4650 Switch | 107

Maintaining the EX4650 Power System | 109

Removing a Power Supply from an EX4650 Switch | 109

Installing an AC Power Supply in an EX4650 Switch | 111

Maintain Transceivers | 112

Remove a Transceiver | 113

Remove a QSFP28 Transceiver | 116

Install a Transceiver | 118

Install a QSFP28 Transceiver | 120

Maintain Fiber-Optic Cables | 122

Connect a Fiber-Optic Cable | 122

Disconnect a Fiber-Optic Cable | 123

How to Handle Fiber-Optic Cables | 124

Troubleshooting Hardware

Troubleshooting the EX4650 Components | 127

Alarm Types and Severity Levels | 127

Interface Alarm Messages | 128

Create an Emergency Boot Device | 129

Contacting Customer Support and Returning the Chassis or Components

Returning an EX4650 Chassis or Components | 132

Returning an EX4650 Switch or Component for Repair or Replacement | 132

Locating the Serial Number on an EX4650 Switch or Component | 133

Listing the Switch and Components Details using the CLI | 133

Locating the Chassis Serial Number ID Label on an EX4650 Switch | 134

Locating the Serial Number ID Labels on FRUs in an EX4650 Switch | 134

Contact Customer Support to Obtain Return Material Authorization | 135

Packing an EX4650 Switch or Component for Shipping | 136

Packing an EX4650 Switch for Shipping | 136

Packing EX4650 Switch Components for Shipping | 138

Safety and Compliance Information

vii

General Safety Guidelines and Warnings | 141

Definitions of Safety Warning Levels | 142

Qualified Personnel Warning | 145

Warning Statement for Norway and Sweden | 146

Fire Safety Requirements | 146

Fire Suppression | 146

Fire Suppression Equipment | 146

Installation Instructions Warning | 148

Chassis and Component Lifting Guidelines | 148

Restricted Access Warning | 150

Ramp Warning | 152

Rack-Mounting and Cabinet-Mounting Warnings | 153

Grounded Equipment Warning | 159

Radiation from Open Port Apertures Warning | 160

Laser and LED Safety Guidelines and Warnings | 161

General Laser Safety Guidelines | 161

Class 1 Laser Product Warning | 162

Class 1 LED Product Warning | 163

Laser Beam Warning | 164

Maintenance and Operational Safety Guidelines and Warnings | 164

Battery Handling Warning | 166

Jewelry Removal Warning | 167

Lightning Activity Warning | 169

Operating Temperature Warning | 170

Product Disposal Warning | 172

viii

General Electrical Safety Guidelines and Warnings | 173

Action to Take After an Electrical Accident | 174

Prevention of Electrostatic Discharge Damage | 175

AC Power Electrical Safety Guidelines | 176

AC Power Disconnection Warning | 178

DC Power Electrical Safety Guidelines | 179

DC Power Disconnection Warning | 180

DC Power Grounding Requirements and Warning | 182

DC Power Wiring Sequence Warning | 184

DC Power Wiring Terminations Warning | 187

Multiple Power Supplies Disconnection Warning | 190

TN Power Warning | 191

Agency Approvals for EX4650 Switches | 191

Compliance Statements for EMC Requirements for EX Series Switches | 193

Canada | 193

Taiwan | 194

European Community | 194

Israel | 194

Japan | 195

Korea | 195

United States | 195

FCC Part 15 Statement | 196

Nonregulatory Environmental Standards | 196

About the Documentation

IN THIS SECTION

Documentation and Release Notes | x

Using the Examples in This Manual | x

Documentation Conventions | xii

Documentation Feedback | xv

Requesting Technical Support | xv

Use this guide to install hardware and perform initial software configuration, routine maintenance, and troubleshooting for the EX4650 switch. After completing the installation and basic configuration procedures covered in this guide, refer to the Junos OS documentation for information about further software configuration.

Documentation and Release Notes

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

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

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

Using the Examples in This Manual

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

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

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

Merging a Full Example

To merge a full example, follow these steps:

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

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

system {

scripts {

commit {

file ex-script.xsl;

}

} } interfaces {

fxp0 {

disable; unit 0 {

family inet {

address 10.0.0.1/24;

}

} }

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

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

Merging a Snippet

To merge a snippet, follow these steps:

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

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

commit {

file ex-script-snippet.xsl; }

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

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

xii

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

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

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

Documentation Conventions

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

Table 1: Notice Icons

xiii

DescriptionMeaningIcon

Indicates important features or instructions.Informational note

Caution

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

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

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

Indicates helpful information.Tip

Alerts you to a recommended use or implementation.Best practice

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

Table 2: Text and Syntax Conventions

ExamplesDescriptionConvention

Fixed-width text like this

Italic text like this

Represents text that you type.Bold text like this

Represents output that appears on the terminal screen.

Introduces or emphasizes important

•

new terms.

Identifies guide names.

•

Identifies RFC and Internet draft

•

titles.

To enter configuration mode, type the configure command:

user@host> configure

user@host> show chassis alarms

No alarms currently active

A policy term is a named structure

•

that defines match conditions and actions.

Junos OS CLI User Guide

•

RFC 1997, BGP Communities

•

Attribute

Table 2: Text and Syntax Conventions (continued)

xiv

ExamplesDescriptionConvention

Italic text like this

Text like this

< > (angle brackets)

| (pipe symbol)

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

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

variables.

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

Configure the machine’s domain name:

[edit] root@# set system domain-name

domain-name

To configure a stub area, include

•

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

hierarchy level.

The console port is labeled

•

CONSOLE.

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

broadcast | multicast

(string1 | string2 | string3)

# (pound sign)

[ ] (square brackets)

Indention and braces ( { } )

; (semicolon)

GUI Conventions

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

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

Identifies a level in the configuration hierarchy.

Identifies a leaf statement at a configuration hierarchy level.

rsvp { # Required for dynamic MPLS only

community name members [ community-ids ]

[edit] routing-options {

static {

route default {

nexthop address; retain;

}

Table 2: Text and Syntax Conventions (continued)

ExamplesDescriptionConvention

Bold text like this

> (bold right angle bracket)

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

Separates levels in a hierarchy of menu selections.

In the Logical Interfaces box, select

•

All Interfaces.

To cancel the configuration, click

•

Cancel.

In the configuration editor hierarchy, select Protocols>Ospf.

Documentation Feedback

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

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

•

Networks TechLibrary site, and do one of the following:

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

•

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

•

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

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

•

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

Requesting Technical Support

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

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

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

•

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

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

•

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

•

365 days a year.

Self-Help Online Tools and Resources

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

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

•

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

•

xvi

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

•

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

•

Download the latest versions of software and review release notes:

•

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

Search technical bulletins for relevant hardware and software notifications:

•

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

Join and participate in the Juniper Networks Community Forum:

•

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

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

•

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

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

Creating a Service Request with JTAC

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

Visit https://myjuniper.juniper.net.

•

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

•

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

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

CHAPTER

Overview

EX4650 Switches System Overview | 18

EX4650 Chassis | 29

EX4650 Cooling System | 33

EX4650 Power System | 40

EX4650 Switches System Overview

IN THIS SECTION

EX4650 Switches Hardware Overview | 18

EX4650 Switch Models | 25

Identifying EX4650 Switch Models | 27

Chassis Physical Specifications for EX4650 Switches | 28

Field-Replaceable Units in EX4650 Switches | 28

EX4650 Switches Hardware Overview

IN THIS SECTION

Benefits of the EX4650 Switch | 19

Software | 19

EX4650 Switch First View | 20

Virtual Chassis | 23

Power Supplies | 24

Cooling System | 25

Juniper Networks EX4650 Ethernet Switches provide connectivity for high-density environments, scalability for growing networks, and redundancy. The EX4650 provides the flexibility to support mixed 1-Gigabit Ethernet, 10-Gigabit Ethernet, 25-Gigabit Ethernet, 40-Gigabit Ethernet, and 100-Gigabit Ethernet environments.

You can interconnect EX4650 switches to form a Virtual Chassis. You can operate these interconnected switches as a single, logical device with a single IP address. You can use EX4650 as a distribution switch with virtual chassis capability, as a satellite device for Junos Fusion Enterprise, and as an aggregation switch.

The EX4650 switch is available as a fixed-configuration switch with the following built-in ports:

Forty-eight 25-Gigabit Ethernet ports that can operate at 1-Gbps, 10-Gbps, or 25-Gbps speed and

•

support SFP, SFP+, or SFP28 transceivers.

Eight 100-Gigabit Ethernet ports that can operate at 40-Gbps or 100-Gbps speed and support QSFP+

•

or QSFP28 transceivers. When these ports operate at 40-Gbps speed, you can configure four 10-Gbps interfaces and connect breakout cables, increasing the total number of supported 10-Gbps ports to 80. When these ports operate at 100-Gbps speed, you can configure four 25-Gbps interfaces and connect breakout cables, increasing the total number of supported 25-Gbps ports to 80.

Four models are available: two featuring AC power supplies and front-to-back or back-to-front airflow and two featuring DC power supplies and front-to-back or back-to-front airflow.

Benefits of the EX4650 Switch

EVPN-VXLAN campus architecture—The EX4650 switch extends EVPN-VXLAN beyond the data center, thus providing customers the building blocks for an enterprise-wide fabric. The EVPN-VXLAN protocol is suitable for campus architectures because it provides Layer 3 transport with Layer 2 capabilities that allow enterprises to evolve, while also taking into consideration legacy applications. EX4650 also offers core aggregation capabilities aimed at enterprises with campus networks that want a compact and highly scalable solution.

Industry-leading 25-Gbps and 100-Gbps wire speeds: The EX4650 Switch offers industry-leading high density 25-Gbps and 100-Gbps wire speeds that support 48 ports at 100-Gbps or 48 ports at 25-Gbps, and 8 100-Gbps uplink ports.

Support for Virtual Chassis—EX4650 switches support virtual chassis technology. You can interconnect up to two or four QFX5120-48Y switches in a QFX5120-48Y virtual chassis.

Common data center protocols: Like the EX9000 series, the EX4650 also uses data center network protocols. The network protocols used in the EX4650 are the Ethernet VPN (EVPN) and the Virtual Extensible LAN (VXLAN). Engineers typically use it with the Border Gateway Protocol and the VXLAN encapsulation protocol which creates an overlay network on an existing Layer 3 infrastructure. As a result, the same engineering team can manage the data center and the campus.

Software

Juniper Networks EX Series Ethernet Switches run Junos OS™, which provides Layer 2 and Layer 3 switching, routing, and security services. The same Junos OS code base that runs on EX Series switches also runs on all Juniper Networks M Series, MX Series, and T Series routers, and SRX Series Services Gateways.

EX4650 Switch First View

g022501

The EX4650 switch has a 1 U form factor and is shipped with redundant fans (4+1) and redundant power supplies (1+1).

The EX4650 switch is a 25-Gigabit Ethernet enhanced small form-factor (SFP28) switch with 48 SFP28 ports and 8 100-Gbps quad small form-factor (QSFP28) pluggable ports. Each SFP28 port can operate as a native 25-Gigabit Ethernet port, 10-Gigabit Ethernet port, and can act as a 1-Gbps port based on the transceivers inserted. Each of the eight uplink ports can operate as either 100-G or 40-G based on the optics used. They can also be used as 25-Gbps ports or 10-Gbps ports using breakout cables or channelization.

NOTE:

The SFP-T transceivers are supported only on top or bottom ports, upto a maximum of 24

•

ports

The SFP28 speed can be applied only for individual quads (four ports). The speed cannot be

•

configured for a single port.

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

above or below another copper transceiver. Use only the top row or bottom row to avoid damage to the device by some types of copper transceivers when the transceivers are installed adjacent to each other. If you use copper transceivers with the OEM part number FCLF8521P2BTL-J1 printed on the transceiver label, you can install the transceivers in any port with no restrictions.

For more information on how to channelize interfaces on EX4650-48Y switches, see Channelizing Interfaces on EX4650-48Y Switches.

Figure 1 on page 20 and Figure 2 on page 21 show the front panel of an EX4650 switch.

Figure 1: Front Panel of an EX4650 Switch

Figure 2 on page 21 shows the components on the front panel of an EX4650 switch.

Figure 2: Components on the Front Panel of an EX4650 Switch

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2—1— QSFP28 portsSFP28 ports

Figure 3 on page 21 shows the rear panel of an EX4650 Switch with AC power supplies.

Figure 3: Rear Panel of an AC-Powered EX4650 Switch

Figure 4 on page 21 shows the rear view of an EX4650 Switch with DC power supplies.

Figure 4: Rear Panel of a DC-Powered EX4650 Switch

Figure 5 on page 22 shows the components on the rear panel of an EX4650 Switch with AC power supplies.

Figure 5: Components on the Rear Panel of an AC-Powered EX4650 Switch

1 3 4

5 6

12 11 10 89 7 7

7—1— Power Supply LEDsChassis status LEDs (ALM, SYS, MST, ID)

8—2— Fan module LEDsConsole port

9—3— RJ-45 management port (C0)RJ-45 management port (C1)

10—4— RESET buttonESD point

11—5— USB portFan module

12—6— CLEI labelPower supplies

Figure 6 on page 22 shows the components on the rear panel of an EX4650 with DC power supplies.

Figure 6: Components on the Rear Panel of a DC-Powered EX4650 Switch

7—1— Power supply LEDsChassis status LEDs (ALM, SYS, MST, ID)

8—2— Fan module LEDsConsole port

9—3— RJ-45 management port (C0)RJ-45 management port (C1)

10—4— RESET buttonESD point

11—5— USB portFan module

12—6— CLEI labelPower supplies

Table 3 on page 23 lists the EX4650 switch models and their components.

Table 3: Components in EX4650 Switches

Power Supply Shipped by Default

Two 650 W AC power supplies (1+1 redundancy)

Two 650 W DC power supplies (1+1 redundancy)

EX4650-48Y-AFO

EX4650-48Y-AFI

EX4650-48Y-DC-AFO

EX4650-48Y-DC-AFI

48x25G SFP28 ports and 8x100G QSFP28 ports

Fan Modules Shipped by DefaultBuilt-in PortsSwitch Model

Five fan modules; each with an AFO label

Five fan modules; each with an AFI label

Five fan modules; each with an AFO label

Five fan modules; each with an AFI label

Virtual Chassis

The EX4650 switch can be used as a member in an all EX4650 virtual chassis.

Starting with Junos OS Release 19.3R1, you can interconnect up to two EX4650 switches in an EX4650

•

Virtual Chassis. The two-member switches must be in the primary and backup routing engine roles.

Starting with Junos OS Release 20.1R1, you can interconnect up to four EX4650 switches in an EX4650

•

Virtual Chassis. You should configure two member switches into the primary and backup Routing Engine roles, and the remaining member switches into the linecard role.

EX4650 switches can’t be combined with any other type of switches in a virtual chassis (mixed mode). EX4650 switches do not have dedicated or default-configured VCPs, but you can set any of the 40-Gbps QSFP+ or 100-Gbps QSFP28 uplink ports on the front panel (non-channelized ports 48 through 55) as VCPs. You can’t use any of the other ports (network ports 0 through 47) as VCPs. You can configure, monitor, and maintain it the same way as a EX Series virtual chassis. See the following topics for more details on how to configure and change the members in a EX4650 virtual chassis:

Understanding Virtual Chassis Components

•

Removing or Replacing a Member Switch of a Virtual Chassis Configuration

•

Adding a New Switch to an Existing EX4650 or QFX Series Virtual Chassis

•

Virtual Chassis Fabric Overview

•

Power Supplies

Each EX4650 switch supports two AC or two DC power supplies with either front-to-back or back-to-front airflow. Power supplies for the EX4650 switch are fully redundant, load-sharing, and hot-removable and hot-insertable field-replaceable units (FRUs). The EX4650 switch models are shipped with two power supplies preinstalled in the rear panel of the chassis.

The power supplies either have labels on the handles that indicate the airflow direction or they have color-coded handles with a fan icon.An AFI label or a blue-colored handle indicates back-to-front airflow while anAFO label or a gold-colored handle indicates front-to-back airflow. See Figure 7 on page 24

Figure 7: Power Supply Handle Detail

1—AFI label

CAUTION: Do not mix:

AC and DC power supplies in the same chassis.

•

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

•

Power supplies and fan modules with different airflow labels (AFI) and (AFO)) in the

•

same chassis.

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

•

of airflow in the chassis. Ensure that each power supply you install in the chassis has the same airflow direction. If you install power supplies with two different airflow directions, Junos OS raises an alarm.

If you need to convert the airflow pattern on a chassis, you must replace all the fans

•

and power supplies at one time to use the new direction.

Cooling System

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EX4650 switches are shipped with five fan modules (4+1 redundancy) located at the rear of the chassis. These fan modules are designed for one of the two available airflow directions. The fan modules are also color-coded to indicate the airflow direction.

Figure 8 on page 25 shows the EX4650 fan module.

Figure 8: EX4650 Fan Module

The five fan modules are numbered 0 through 4 counting from left to right. Each fan module slot has a fan icon and an LED next to it.

CAUTION: Do not mix:

AC and DC power supplies in the same chassis.

•

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

•

Power supplies and fan modules with different airflow labels (AFI) and (AFO)) in the

•

same chassis.

EX4650 Switch Models

The EX4650 switch is available with 48 ports and supports AC and DC power supplies depending on the switch model. All models of the EX4650 ship with two power supplies and five fans installed by default.

Table 4 on page 26 lists the components shipped with EX4650 switch models.

Table 4: EX4650 Switch Models and Shipped Components

AirflowPower SupplyPortsSwitch Model

EX4650-48Y-AFO

EX4650-48Y-AFI

EX4650-48Y-DC-AFO

8 QSFP28

AC48 SFP28

DC48 SFP28

Front-to-back—air intake to cool the chassis is through the vents on the front panel of the chassis, and hot air exhausts through the vents on the rear panel of the chassis.

Back-to-front—air intake to cool the chassis is through the vents on the rear panel of the chassis, and hot air exhausts through the vents on the front panel of the chassis.

Front-to-back—air intake to cool the chassis is through the vents on the front panel of the chassis, and hot air exhausts through the vents on the rear panel of the chassis.

EX4650-48Y-DC-AFI

DC48 SFP28

8 QSFP28

Back-to-front—air intake to cool the chassis is through the vents on the rear panel of the chassis, and hot air exhausts through the vents on the front panel of the chassis.

CAUTION: Mixing different types (AC and DC) of power supplies in the same chassis

is not supported. Mixing different airflow modules in the same chassis is not supported.

Identifying EX4650 Switch Models

Purpose

Identify the model number of your EX4650 switch.

Action Check the value of the FRU Model Number field in the Routing Engine section in the output of the show

chassis hardware extensive CLI command.

user@switch> show chassis hardware extensive

....

Routing Engine 1 REV D 650-044930 PD3113060024 EX4650-48Y Jedec Code: 0x7fb0 EEPROM Version: 0x02 P/N: 650-044930 S/N: PD3113060024 Assembly ID: 0x0b5e Assembly Version: 03.19 Date: 02-19-2013 Assembly Flags: 0x00 Version: REV D CLEI Code: ID: EX4650-48Y FRU Model Number: EX4650-48Y-AFO

....

The model number of your switch is one of the following:

EX4650-48Y-AFO

•

EX4650-48Y-AFI

•

EX4650-48Y-DC-AFO

•

EX4650-48Y-DC-AFI

•

In the sample output, the switch model is EX4650-48Y-AFO.

Meaning

In EX4650 switch model numbers:

The 48Y in the model number indicates that the number of network ports on the switch:

•

AFI indicates that the switch is shipped with two fan modules and a power supply, each bearing an AIR

•

IN (AFI) label. Switches that do not have AFI in their model numbers ship with two fan modules and a power supply, each bearing an AIR OUT (AFO) label.

The labels on the fan modules and the power supplies indicate the direction of airflow they provide within the chassis when installed in the switch. AIR IN (AFI) labels indicate back-to-front airflow, and AIR OUT (AFO) labels indicate front-to-back airflow.

The DC in the model number indicates that the switch model works on DC power supply. Switches that

•

do not have DC in their model numbers work on AC power supply.

Chassis Physical Specifications for EX4650 Switches

The EX4650 switch chassis is a rigid sheet-metal structure that houses all components of the switch.

Table 5 on page 28 summarizes the physical specifications of the EX4650 switch chassis.

Table 5: Physical Specifications of the EX4650 Switch Chassis

ValueDescription

1.72 in. (4.37 cm)Chassis height

Chassis width

17.36 in. (44.09 cm)

•

The outer edges of the front-mounting brackets extend the width to 19 in.

•

(48.2 cm)

20.48 in. (52.02 cm) excluding fan and power supply handlesChassis depth

23.69 lbs (10.75 kg) with two power supplies and fans installedWeight

Field-Replaceable Units in EX4650 Switches

Field-replaceable units (FRUs) are components that you can replace at your site. The FRUs in EX4650 switches are hot-removable and hot-insertable – you can remove and replace them without powering off the switch. The FRUs in EX4650 switches are:

Power supplies

•

Fan modules

•

Transceivers

•

NOTE: Transceivers are not part of the shipping configuration. If you want to purchase

transceivers, you must order them separately.

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

g022529

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

EX4650 Chassis

IN THIS SECTION

Chassis Status LEDs on EX4650 Switches | 29

Management Port LEDs on EX4650 Switches | 31

Access Port and Uplink Port LEDs on EX4650 Switches | 31

Chassis Status LEDs on EX4650 Switches

EX4650 switches have four chassis status LEDs (labeled ALM, SYS, MST, and ID) (see Figure 9 on page 29).

Figure 9: Chassis Status LEDs in EX4650

1—Chassis status LEDs

Table 6 on page 30 describes the chassis status LEDs on an EX4650 switch, their colors and states, and

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

Table 6: Chassis Status LEDs on an EX4650 Switch

State and DescriptionColorLED Label

There is no alarm or the switch is halted.UnlitALM (Alarm)

Red

Amber

There is a major alarm.

NOTE: A major hardware fault has occurred, such as a temperature alarm

or power failure, and the switch has halted. Power off the unit by setting the AC power source outlet to the OFF (O) position, or unplugging the AC power cords. Correct any voltage or site temperature issues, and allow the switch to cool down. Power on the unit switch and monitor the power supply and fan LEDs to help determine where the error is occurring. s the network link and turns off the ALM LED..)

There is a minor alarm.

NOTE: The Alarm (ALM) LED glows yellow if you commit a configuration

to make it active on the switch and do not also create 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.

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

•

Junos OS for EFX Series is loaded on the switch.Green(On steadily)

Indicates a standalone EX4650 switch.Green(On steadily)MST (Primary)

UnlitID(Identification)

Blinking

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

Blinking—The beacon feature is enabled.

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

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.

+ 167 hidden pages

Juniper EX4650 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

EX4650 Switches System Overview

EX4650 Switches Hardware Overview

Benefits of the EX4650 Switch

Software

EX4650 Switch First View

Virtual Chassis

Power Supplies

Cooling System

EX4650 Switch Models

Identifying EX4650 Switch Models

Chassis Physical Specifications for EX4650 Switches

Field-Replaceable Units in EX4650 Switches

EX4650 Chassis

Chassis Status LEDs on EX4650 Switches