Juniper EX8208 Hardware Guide

EX8208 Switch Hardware Guide

Published

2020-12-15

Juniper Networks, Inc. 1133 Innovation Way Sunnyvale, California 94089 USA

408-745-2000 www.juniper.net

JuniperNetworks,theJuniperNetworkslogo,Juniper,andJunosareregisteredtrademarksofJuniperNetworks,Inc. in theUnitedStatesandothercountries. Allothertrademarks,servicemarks,registeredmarks,orregisteredservicemarks 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.

EX8208SwitchHardwareGuide

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

YEAR2000NOTICE

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.

ENDUSERLICENSEAGREEMENT

TheJuniperNetworksproductthatisthesubjectofthistechnicaldocumentationconsistsof(orisintendedforusewith) JuniperNetworkssoftware.UseofsuchsoftwareissubjecttothetermsandconditionsoftheEndUserLicenseAgreement (“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.

iii

AbouttheDocumentation | xiii

Documentation and Release Notes | xiii

Using the Examples in This Manual | xiii

Merging a Full Example | xiv

Merging a Snippet | xv

Documentation Conventions | xv

Documentation Feedback | xviii

Requesting Technical Support | xviii

Self-Help Online Tools and Resources | xix

Creating a Service Request with JTAC | xix

1EX8208SystemOverview

EX8208SystemOverview | 21

EX8208 Switch Hardware Overview | 21

Benefits of the EX8208 Switch | 22

Software | 22

Chassis Physical Specifications, LCD Panel, and Backplane | 22

Routing Engines and Switch Fabric | 23

Line Cards | 24

Cooling System | 25

Power Supplies | 26

EX8208 Switch Configurations | 27

EX8208 Switch Hardware and CLI Terminology Mapping | 29

Chassis Physical Specifications of an EX8208 Switch | 33

Field-Replaceable Units in an EX8208 Switch | 35

EX8208Chassis | 37

Understanding EX8208 Switch Component and Functionality Redundancy | 37

Hardware Components That Provide Redundancy | 37

Routing Engine and Control Redundancy | 38

Switch Fabric Redundancy | 39

Slot Numbering for an EX8208 Switch | 40

Slot Numbering for SRE and SF Module Slots and Line Card Slots | 40

Slot Numbering for the Power Supply Slots | 42

LCD Panel in an EX8200 Switch | 43

LCD Panel Modes | 44

LCD Panel Menus | 45

Backplane in an EX8208 Switch | 49

Chassis Status LEDs in an EX8200 Switch | 50

Network Port LEDs in an EX8200 Switch | 51

EX8208CoolingSystem | 53

Fan Tray | 54

Airflow Direction in the EX8208 Switch Chassis | 55

EX8200PowerSystem | 56

AC Power Supply in an EX8200 Switch | 56

AC Power Supply Description | 57

N+1 Redundancy Configuration of AC Power Supplies | 59

N+N Redundancy Configuration of AC Power Supplies | 60

AC Power Supply LEDs in an EX8200 Switch | 63

AC Power Specifications for EX8200 Switches | 65

AC Power Cord Specifications for an EX8200 Switch | 66

DC Power Supply in an EX8200 Switch | 70

DC Power Supply LEDs in an EX8200 Switch | 72

DC Power Specifications for EX8200 Switches | 75

Grounding Cable and Lug Specifications for EX8200 Switches | 76

EX8208HostSubsystem | 78

Switch Fabric and Routing Engine (SRE) Module in an EX8208 Switch | 78

SRE Module LEDs in an EX8208 Switch | 80

Switch Fabric (SF) Module in an EX8208 Switch | 81

SF Module LEDs in an EX8208 Switch | 82

EX8200LineCards | 83

Line Card Model and Version Compatibility in an EX8200 Switch | 84

8-port SFP+ Line Card in an EX8200 Switch | 86

Line Card Models | 87

Line Card Components | 87

40-port SFP+ Line Card in an EX8200 Switch | 88

Line Card Models | 89

Line Card Components | 90

Line Card Ports | 90

EX8200-2XS-40P Line Card | 92

Line Card Models | 92

Line Card Components | 93

Line Card Ports | 93

EX8200-2XS-40T Line Card | 94

Line Card Models | 95

Line Card Components | 95

Line Card Ports | 96

EX8200-48PL Line Card | 97

Line Card Models | 97

Line Card Components | 98

Line Card Ports | 98

EX8200-48TL Line Card | 99

Line Card Models | 100

Line Card Components | 100

Line Card Ports | 100

48-Port SFP Line Card in an EX8200 Switch | 101

Line Card Models | 102

Line Card Components | 102

48-Port RJ-45 Line Card in an EX8200 Switch | 103

Line Card Models | 104

Line Card Components | 104

Line Card LEDs in an EX8200 Switch | 105

2SitePlanning,Preparation,andSpecifications

SitePreparationChecklistforanEX8200Switch | 108

EX8208SiteGuidelinesandRequirements | 109

Environmental Requirements and Specifications for EX Series Switches | 110

General Site Guidelines | 115

Site Electrical Wiring Guidelines | 115

Clearance Requirements for Airflow and Hardware Maintenance for an EX8208 Switch | 116

Rack Requirements | 118

Cabinet Requirements | 119

Power Requirements for EX8208 Switch Components | 120

Calculating Power Requirements for an EX8208 Switch | 121

Calculating the Power Consumption of Your EX8208 Switch Configuration | 122

Calculating System Thermal Output for Your EX8208 Switch Configuration | 124

Calculating the Number of Power Supplies Required for Your EX8208 Switch

Configuration | 124

EX8200NetworkCableandTransceiverPlanning | 128

Pluggable Transceivers Supported on EX8200 Switches | 128

SFP+ Direct Attach Copper Cables for EX Series Switches | 129

Cable Specifications | 130

List of DAC Cables Supported on EX Series Switches | 130

Standards Supported by These Cables | 131

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

Dispersion | 131

Signal Loss in Multimode and Single-Mode Fiber-Optic Cable | 131

Attenuation and Dispersion in Fiber-Optic Cable | 132

Calculating the Fiber-Optic Cable Power Budget for EX Series Devices | 132

Calculating the Fiber-Optic Cable Power Margin for EX Series Devices | 133

EX8200ManagementCableSpecificationsandPinouts | 135

Management Cable Specifications | 135

Console Port Connector Pinout Information | 136

USB Port Specifications for an EX Series Switch | 136

RJ-45 Management Port Connector Pinout Information | 137

RJ-45 to DB-9 Serial Port Adapter Pinout Information | 138

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3InitialInstallationandConfiguration

UnpackingandMountingtheEX8208Switch | 140

Unpacking an EX8200 Switch | 140

Unpacking a Line Card Used in an EX8200 Switch | 143

Parts Inventory (Packing List) for an EX8208 Switch | 144

Installing and Connecting an EX8208 Switch | 147

Installing Adjustable Mounting Brackets in a Rack or Cabinet for an EX8200 Switch | 148

Installing the Power Cord Tray in a Rack or Cabinet for an EX8200 Switch | 151

Mounting an EX8208 Switch on a Rack or Cabinet | 154

Mounting an EX8208 Switch on a Rack or Cabinet Using a Mechanical Lift | 157

Mounting an EX8208 Switch on a Rack or Cabinet Without Using a Mechanical Lift | 159

ConnectingtheEX8200toPower | 164

Connect Earth Ground to an EX Series Switch | 164

Parts and Tools Required for Connecting an EX Series Switch to Earth Ground | 165

SpecialInstructionstoFollowBeforeConnectingEarthGroundtoanEXSeriesSwitch | 169

Connecting Earth Ground to an EX Series Switch | 170

Connecting AC Power to an EX8200 Switch | 171

Connecting DC Power to an EX8200 Switch | 174

Powering On an EX8200 Switch | 180

ConnectingtheEX8200toExternalDevices | 182

Connect a Device to a Network for Out-of-Band Management | 182

Connect a Device to a Management Console Using an RJ-45 Connector | 183

Connecting an EX8200 Switch to a Modem | 184

Setting the Serial Console Speed for the Switch | 185

Configuring the Modem | 186

Connecting the Modem to the Console Port | 187

ConnectingtheEX8200totheNetwork | 188

Install a Transceiver | 189

Connect a Fiber-Optic Cable | 191

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ConfiguringJunosOSontheEX8200 | 193

EX8200 Switch Default Configuration | 193

Connecting and Configuring an EX Series Switch (CLI Procedure) | 194

Connecting and Configuring an EX Series Switch (J-Web Procedure) | 198

Configuring the LCD Panel on EX Series Switches (CLI Procedure) | 202

Disabling or Enabling Menus and Menu Options on the LCD Panel | 203

Configuring a Custom Display Message | 204

DashboardforEXSeriesSwitches | 205

Graphical Chassis Viewer | 206

System Information Panel | 208

Health Status Panel | 211

Capacity Utilization Panel | 215

Alarms Panel | 216

File System Usage | 216

Chassis Viewer | 216

4MaintainingComponents

MaintainingtheEX8208CoolingSystem | 235

Removing a Fan Tray from an EX8208 Switch | 235

Installing a Fan Tray in an EX8208 Switch | 237

MaintainingtheEX8200PowerSystem | 238

Removing an AC Power Supply from an EX8200 Switch | 239

Installing an AC Power Supply in an EX8200 Switch | 240

Removing a DC Power Supply from an EX8200 Switch | 243

Installing a DC Power Supply in an EX8200 Switch | 245

MaintainingtheEX8200PowerCordTray | 247

Removing the Power Cord Tray from a Rack or Cabinet for an EX8200 Switch | 248

Installing the Power Cord Tray in a Rack or Cabinet for an EX8200 Switch | 248

MaintainingtheEX8208HostSubsystem | 251

Taking the SRE Module Offline in an EX8208 Switch | 251

Taking an SRE Module Offline in a Switch with Redundant SRE Modules | 251

Taking an SRE Module Offline in a Switch With One SRE Module | 252

Removing an SRE Module from an EX8208 Switch | 253

Installing an SRE Module in an EX8208 Switch | 255

Taking the SF Module Offline in an EX8208 Switch | 257

Removing an SF Module from an EX8208 Switch | 257

Installing an SF Module in an EX8208 Switch | 259

MaintainingtheEX8200LineCards | 261

Handling and Storing Line Cards | 262

Holding a Line Card | 262

Storing a Line Card | 266

Maintaining Line Card Cables | 267

Unpacking a Line Card Used in an EX8200 Switch | 267

Removing a Line Card from an EX8200 Switch | 268

Installing a Line Card in an EX8200 Switch | 271

MaintainTransceivers | 275

Remove a Transceiver | 275

Remove a QSFP28 Transceiver | 279

Install a Transceiver | 281

Install a QSFP28 Transceiver | 283

MaintainFiber-OpticCables | 285

Connect a Fiber-Optic Cable | 285

Disconnect a Fiber-Optic Cable | 286

How to Handle Fiber-Optic Cables | 287

RemovinganEX8208fromaRackorCabinet | 288

Powering Off an EX8200 Switch | 289

Removing an EX8208 Switch from a Rack or Cabinet | 290

Removing an EX8208 Switch from a Rack or Cabinet Using a Mechanical Lift | 292

Removing an EX8208 Switch from a Rack or Cabinet Without Using a Mechanical Lift | 294

RemovingaBatteryfromanEX8208SwitchforRecycling | 296

5TroubleshootingHardware

TroubleshootingEX8200Components | 299

Understand Alarm Types and Severity Levels on EX Series Switches | 299

Chassis Component Alarm Conditions on EX8200 Switches | 300

Check Active Alarms with the J-Web Interface | 311

Monitor System Log Messages | 312

Troubleshooting an EX8200 Line Card’s Failure to Power On | 317

Troubleshoot Temperature Alarms in EX Series Switches | 320

6ContactingCustomerSupportandReturningtheChassisorComponents

ReturninganEX8200ChassisorComponents | 326

Returning an EX8200 Switch or Component for Repair or Replacement | 326

Locating the Serial Number on an EX8200 Switch or Component | 327

Listing the Switch and Components Details with the CLI | 327

Locating the Serial Number ID Label on an EX8200 Switch Chassis | 330

Locating Serial Number ID Labels on FRU Components | 331

Contact Customer Support to Obtain Return Material Authorization | 339

Packing an EX8200 Switch or Component | 340

Packing an EX8200 Switch | 340

Packing EX8200 Switch Components for Shipping | 343

Packing a Line Card Used in an EX8200 Switch | 344

7SafetyandComplianceInformation

GeneralSafetyGuidelinesandWarnings | 347

DefinitionsofSafetyWarningLevels | 348

QualifiedPersonnelWarning | 351

WarningStatementforNorwayandSweden | 352

FireSafetyRequirements | 352

Fire Suppression | 352

Fire Suppression Equipment | 352

InstallationInstructionsWarning | 354

ChassisandComponentLiftingGuidelines | 354

RestrictedAccessWarning | 356

RampWarning | 358

Rack-MountingandCabinet-MountingWarnings | 359

GroundedEquipmentWarning | 365

RadiationfromOpenPortAperturesWarning | 366

LaserandLEDSafetyGuidelinesandWarnings | 367

General Laser Safety Guidelines | 367

Class 1 Laser Product Warning | 368

Class 1 LED Product Warning | 369

Laser Beam Warning | 370

MaintenanceandOperationalSafetyGuidelinesandWarnings | 370

Battery Handling Warning | 372

Jewelry Removal Warning | 373

Lightning Activity Warning | 375

Operating Temperature Warning | 376

Product Disposal Warning | 378

GeneralElectricalSafetyGuidelinesandWarnings | 379

ActiontoTakeAfteranElectricalAccident | 380

PreventionofElectrostaticDischargeDamage | 381

ACPowerElectricalSafetyGuidelines | 382

ACPowerDisconnectionWarning | 384

DCPowerElectricalSafetyGuidelines | 385

DCPowerDisconnectionWarning | 386

DCPowerGroundingRequirementsandWarning | 388

DCPowerWiringSequenceWarning | 390

DCPowerWiringTerminationsWarning | 393

MultiplePowerSuppliesDisconnectionWarning | 396

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TNPowerWarning | 397

AgencyApprovalsforEXSeriesSwitches | 397

BatteryComplianceStatementforEnvironmentalRequirementsforEXSeries

Switches | 398

ComplianceStatementsforEMCRequirementsforEXSeriesSwitches | 399

Canada | 399

Taiwan | 400

European Community | 400

Israel | 401

Japan | 401

Korea | 401

United States | 402

FCC Part 15 Statement | 402

Nonregulatory Environmental Standards | 402

ComplianceStatementsforAcousticNoiseforEXSeriesSwitches | 403

xiii

AbouttheDocumentation

INTHISSECTION

Documentation and Release Notes | xiii

Using the Examples in This Manual | xiii

Documentation Conventions | xv

Documentation Feedback | xviii

Requesting Technical Support | xviii

Use this guide to install hardware and perform initial software configuration, routine maintenance, and troubleshootingfortheEX8208switch.Aftercompletingtheinstallationandbasicconfigurationprocedures covered in this guide, refer to the Junos OS documentation for information about further software configuration.

DocumentationandReleaseNotes

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/.

Iftheinformationinthelatestreleasenotesdiffersfromtheinformationinthedocumentation,followthe 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.

UsingtheExamplesinThisManual

If you want to use the examples in this manual, you can use the loadmerge or the loadmergerelative command. These commands cause the software to merge the incoming configuration into the current candidateconfiguration.Theexampledoesnotbecomeactiveuntilyoucommitthecandidateconfiguration.

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

If the example configuration does not start at the top level of the hierarchy, the example is a snippet. In thiscase,usetheloadmergerelative command.Theseproceduresaredescribedinthefollowingsections.

MergingaFullExample

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 loadmerge configuration mode command:

[edit]

user@host# loadmerge/var/tmp/ex-script.conf load complete

MergingaSnippet

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.Movetothehierarchylevelthatisrelevantforthissnippetbyissuingthefollowingconfigurationmode command:

[edit]

user@host# editsystemscripts

[edit system scripts]

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

[edit system scripts]

user@host# loadmergerelative/var/tmp/ex-script-snippet.conf load complete

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

DocumentationConventions

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

xvi

Table1:NoticeIcons
Icon	Meaning	Description
	Informational note	Indicates important features or instructions.
	Caution	Indicates a situation that might result in loss of data or hardware
		damage.
	Warning	Alerts you to the risk of personal injury or death.
	Laser warning	Alerts you to the risk of personal injury from a laser.
	Tip	Indicates helpful information.
	Best practice	Alerts you to a recommended use or implementation.

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

Table2:TextandSyntaxConventions

Convention	Description	Examples
Boldtextlikethis	Represents text that you type.	To enter configuration mode, type
		the configure command:
		user@host> configure

Fixed-width text like this

Italictextlikethis

Represents output that appears on the terminal screen.

•Introducesoremphasizesimportant new terms.

•Identifies guide names.

•Identifies RFC and Internet draft titles.

user@host> showchassisalarms

No alarms currently active

•A policy term is a named structure that defines match conditions and actions.

•JunosOSCLIUserGuide

•RFC 1997, BGPCommunities Attribute

xvii

Table2:TextandSyntaxConventions (continued)

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

Examples

Configure the machine’s domain name:

[edit]

root@# setsystemdomain-name domain-name

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

•To configure a stub area, include the stub statement at the [edit protocolsospfareaarea-id] hierarchy level.

•The console port is labeled

CONSOLE.

< > (angle brackets)	Encloses optional keywords or
	variables.
\| (pipe symbol)	Indicates a choice between the
	mutually exclusive keywords or
	variablesoneithersideofthesymbol.
	The set of choices is often enclosed
	in parentheses for clarity.

stub<default-metric metric>;

broadcast|multicast

(string1 | string2 | string3)

# (pound sign)

[ ] (square brackets)

Indention and braces ( { } )

; (semicolon)

Indicatesacommentspecifiedonthe	rsvp{#RequiredfordynamicMPLS
same line as the configuration	only
statement to which it applies.
Enclosesavariableforwhichyoucan	communitynamemembers[
substitute one or more values.	community-ids ]
Identifies a level in the configuration	[edit]
hierarchy.	routing-options {
	static {
Identifies a leaf statement at a	route default {
configuration hierarchy level.	nexthop address;
	retain;
	}
	}
	}

GUIConventions

xviii

Table2:TextandSyntaxConventions (continued)
Convention	Description	Examples
Boldtextlikethis	Represents graphical user interface	• IntheLogicalInterfacesbox,select
	(GUI) items you click or select.	AllInterfaces.
		• To cancel the configuration, click
		Cancel.
> (bold right angle bracket)	Separates levels in a hierarchy of	Intheconfigurationeditorhierarchy,
	menu selections.	select Protocols>Ospf.

DocumentationFeedback

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—Sendyourcommentstotechpubs-comments@juniper.net.Includethedocumentortopicname, URL or page number, and software version (if applicable).

RequestingTechnicalSupport

TechnicalproductsupportisavailablethroughtheJuniperNetworksTechnicalAssistanceCenter(JTAC). If you are a customer with an active Juniper Care or Partner Support Services support contract, or are

xix

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

•JTACpolicies—ForacompleteunderstandingofourJTACproceduresandpolicies,reviewtheJTACUser Guide located at https://www.juniper.net/us/en/local/pdf/resource-guides/7100059-en.pdf.

•Productwarranties—Forproductwarrantyinformation,visithttps://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-HelpOnlineToolsandResources

Forquickandeasyproblemresolution,JuniperNetworkshasdesignedanonlineself-serviceportalcalled 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/

•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/

CreatingaServiceRequestwithJTAC

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

EX8208 System Overview

EX8208 System Overview | 21

EX8208 Chassis | 37

EX8208 Cooling System | 53

EX8200 Power System | 56

EX8208 Host Subsystem | 78

EX8200 Line Cards | 83

EX8208SystemOverview

INTHISSECTION

EX8208 Switch Hardware Overview | 21

EX8208 Switch Configurations | 27

EX8208 Switch Hardware and CLI Terminology Mapping | 29

Chassis Physical Specifications of an EX8208 Switch | 33

Field-Replaceable Units in an EX8208 Switch | 35

EX8208SwitchHardwareOverview

INTHISSECTION

Benefits of the EX8208 Switch | 22

Software | 22

Chassis Physical Specifications, LCD Panel, and Backplane | 22

Routing Engines and Switch Fabric | 23

Line Cards | 24

Cooling System | 25

Power Supplies | 26

Juniper Networks EX8208 Ethernet Switches provide high performance, scalable connectivity, and carrier-classreliabilityforhigh-densityenvironmentssuchascampus-aggregationanddata-centernetworks. TheEX8208switchisamodularsystemthatprovideshighavailabilityandredundancyforallmajorhardware components, including Routing Engines, switch fabric, fan tray (redundant fans), and power supplies.

YoucanformanEX8200VirtualChassisbyconnectingindividualEX8200switchestoanXRE200External RoutingEngine.AVirtualChassisismultipleswitchesconnectedtogetherthatoperateasasinglenetwork entity.

You can manage EX8208 switches using the same interfaces that you use for managing other devices running the Juniper Networks Junos operating system (Junos OS)—the command-line interface (CLI), the J-Web graphical interface, and the Network and Security Manager (NSM).

BenefitsoftheEX8208Switch

Support for Virtual Chassis—EX8208 switches support Virtual Chassis technology. You can configure EX8200 switches in a Virtual Chassis and manage and operate them as a single network entity by using the XRE200 External Routing Engine.

Highcapacity—Withatotalcapacityofupto6.2Terabitspersecond(Tbps),EX8208isapowerfulmodular platform that delivers the performance, scalability, and high availability required for high-density data center, campus aggregation, and core switching environments.

Support for Juniper Networks Service Now solution—EX8200 switches support the Juniper Networks ServiceNowsolution,acomprehensivesetoftoolsthatenableJuniperNetworksJ-CareTechnicalService offerings to automate the delivery of tailored, proactive network intelligence and support services.

Software

The 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.

ChassisPhysicalSpecifications,LCDPanel,andBackplane

The EX8208 switch is 14 rack units (14 U) in size (1/3 rack). Three EX8208 switches can fit in a standard 42 U rack. Each EX8208 switch is designed to optimize rack space and cabling. See Figure 1 on page 23.

Figure1:EX8208Switch

LCD	Chassis	ESD	Front-mounting
panel	status LEDs	point	bracket

Line cards

SRE0 module

SF module

SRE1 module

Line cards

Fan tray

AC power supplies

<![if ! IE]>

<![endif]>g020500

Lift handle

TheEX8208switchhasachassis-levelLCDpanelthatdisplaysRoutingEngineandswitchfabricstatusas well as chassis components’ alarm information for rapid problem identification. The LCD panel provides auser-friendlyinterfaceforperforminginitialswitchconfiguration,rollingbackaconfiguration,orrestoring the switch to its default settings. See LCDPanelinanEX8200Switch.

The EX8208 chassis backplane distributes the data, control, and management signals to various system components along with distributing power throughout the system.

See “Chassis Physical Specifications of an EX8208 Switch” on page 33.

RoutingEnginesandSwitchFabric

Switching functionality, system management, and system control functions of an EX8208 switch are performed by a Switch Fabric and Routing Engine (SRE) module. See “Switch Fabric and Routing Engine (SRE) Module in an EX8208 Switch” on page 78. An SRE module contains a Routing Engine and switch fabric. The SRE modules are field-replaceable units (FRUs) that are installed in the front of the chassis in

the slots labeled SRE0 and SRE1. See “Slot Numbering for an EX8208 Switch” on page 40. A base configurationEX8208switchhasoneSREmodule.AredundantconfigurationEX8208switchhasasecond SRE module. See “EX8208 Switch Configurations” on page 27.

TheSwitchFabric(SF)module,workingwiththeSREmodule,providesthenecessaryswitchingfunctionality to a base configuration EX8208 switch. The SF module is installed in the front of the chassis in the slot labeledSF. Inaredundantconfiguration,theSFmoduleprovidesfull2+1switchfabricredundancytothe switch. See “Switch Fabric (SF) Module in an EX8208 Switch” on page 81.

The EX8208 switch can also be connected to an XRE200 External Routing Engine. An XRE200 External Routing Engine is used to connect multiple EX8200 switches into a Virtual Chassis. See XRE200External RoutingEngineHardwareOverview.

LineCards

The EX8208 switch features eight horizontal line card slots and supports line rate for each line card. The line cards in EX8200 switches combine a Packet Forwarding Engine and Ethernet interfaces on a single assembly. Line cards are FRUs that can be installed in the line card slots labeled 0 through 7 on the front of the switch chassis. See “Slot Numbering for an EX8208 Switch” on page 40. All line cards are hot-removable and hot-insertable.

Twelve line cards are available for EX8200 switches. The extra-scale line card models provide larger IPv4 and IPv6 route table sizes than the non-extra-scale models to store more unicast routes.

Table 3 on page 24 shows the model numbers and descriptions of the line cards available for EX8200 switches.

Table3:LineCardsAvailableforEX8200Switches

Model	Description	Additional Information
EX8200-8XS	8-port SFP+ line card	“8-portSFP+LineCardinanEX8200Switch”
		on page 86
EX8200-8XS-ES	8-port SFP+ line card, extra-scale	“8-portSFP+LineCardinanEX8200Switch”
		on page 86
EX8200-40XS	40-port SFP+ line card	“40-port SFP+ Line Card in an EX8200
		Switch” on page 88
EX8200-40XS-ES	40-port SFP+ line card, extra-scale	“40-port SFP+ Line Card in an EX8200
		Switch” on page 88
EX8200-2XS-40P	40-port PoE+ with 4-port SFP and	“EX8200-2XS-40P Line Card” on page 92
	2-port SFP+ line card

Table3:LineCardsAvailableforEX8200Switches (continued)
Model	Description	Additional Information
EX8200-2XS-40T	40-port RJ-45 with 4-port SFP and	“EX8200-2XS-40T Line Card” on page 94
	2-port SFP+ line card
EX8200-48PL	48-port PoE+ 20 Gbps line card	“EX8200-48PL Line Card” on page 97
EX8200-48TL	48-port RJ-45 20 Gbps line card	“EX8200-48TL Line Card” on page 99
EX8200-48T	48-port RJ-45 line card	“48-Port RJ-45 Line Card in an EX8200
		Switch” on page 103
EX8200-48T-ES	48-port RJ-45 line card, extra-scale	“48-Port RJ-45 Line Card in an EX8200
		Switch” on page 103
EX8200-48F	48-port SFP line card	“48-PortSFPLineCardinanEX8200Switch”
		on page 101
EX8200-48F-ES	48-port SFP line card, extra-scale	“48-PortSFPLineCardinanEX8200Switch”
		on page 101

NOTE: Werecommendthatyoudonotinstallextra-scalelinecardmodelsandnon-extra-scale models in the same switch or Virtual Chassis. If you install extra-scale line cards in a switch or Virtual Chassis that has non-extra-scale models installed, the IPv4 and IPv6 route table sizes defaulttothoseofthenon-extra-scalemodelsandyouwillnotgetthebenefitoftheincreased table sizes of the extra-scale models.

You will experience these decreased route table sizes in a Virtual Chassis even when the non-extra-scale line cards are installed in one member switch and the extra-scale line cards are installed in another member switch.

CoolingSystem

ThecoolingsysteminanEX8208switchconsistsofahot-removableandhot-insertableFRUfantray.The fan tray contains 12 fans. The fan tray installs vertically on the left front of the chassis and provides side-to-side chassis cooling. See “EX8208 Cooling System” on page 53.

PowerSupplies

Power supplies for the EX8208 switch are fully redundant, load-sharing, and hot-removable and hot-insertable (FRUs. Each EX8208 switch chassis can hold up to six AC or DC power supplies.

Table 4 on page 26 shows the details of the power supplies available for EX8208 switches.

Table4:PowerSuppliesSupportedonEX8208Switches

Power Supply	Input Voltage	Output Power
2000 W AC	Low-voltage line (100-120 VAC)	1200 W
	High-voltage line (200-240 VAC)	2000 W
3000 W AC	Low-voltage line (100-120 VAC)	Not supported
	High-voltage line (200-240 VAC)	3000 W
2000 W DC	-40 VDC through -72VDC	2000 W

Only two AC power supplies (provided) are required to power on the base AC configuration switch. The redundantACconfigurationshipswithsixACpowersuppliestoprovidethecapacitytopowerthesystem using N+1 or N+N power redundancy. See “AC Power Supply in an EX8200 Switch” on page 56 and “EX8208 Switch Configurations” on page 27.

The redundant DC configuration ships with four DC power supplies. The dual inputs of the DC supplies provide direct support for N+N power redundancy. The redundant configuration also provides sufficient capacity for N+1 redundancy in most configurations; if necessary, up to two additional DC supplies can be added to the system. See “DC Power Supply in an EX8200 Switch” on page 70 and “EX8208 Switch Configurations” on page 27.

CAUTION: Mixingdifferenttypesofpowersupplies(ACandDC)inthesamechassis is not supported.

Table5:EX8208SwitchHardwareConfigurations
Switch Configuration	Configuration Components
Baseconfiguration(ACwith2000WACpowersupplies)	• Chassis with backplane
	• One fan tray
	• One Switch Fabric and Routing Engine (SRE) module
	• One Switch Fabric (SF) module
	• Two 2000 W AC power supplies
	• Two power cords
	• Eight line card cover panels
	• Four power supply cover panels

Hardware			Item In
Item (CLI)	Description(CLI)	Value (CLI)	Documentation	AdditionalInformation
Chassis	EX8208	–	Switch chassis	“Chassis Physical
				Specifications of an
				EX8208 Switch” on
				page 33
Backplane	EX8208-BP-S	–	Backplane	“BackplaneinanEX8208
				Switch” on page 49

Hardware		Item In
Item (CLI)	Description(CLI) Value (CLI)	Documentation	AdditionalInformation

CB (n)	One of the	n is a value in the range
	following:	of 0–2.
	• EX8208-SRE320	Multiplelineitemsappear
	• EX8208-SF320	in the CLI if more than
		one control board (CB) is
		installed in the chassis.
		CB0 and CB1 are always
		SRE modules.

Switch Fabric and	“Switch Fabric and
Routing Engine (SRE)	Routing Engine (SRE)
module	Module in an EX8208
	Switch” on page 78
Switch Fabric (SF)	“Switch Fabric (SF)
module	Module in an EX8208
	Switch” on page 81

Juniper EX8208 Hardware Guide

Table of Contents

Documentation and Release Notes | xiii

Using the Examples in This Manual | xiii

EX8208 System Overview

EX8208 Switch Hardware Overview | 21

Software