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
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.
EX8208 Switch Hardware Guide
Copyright © 2020 Juniper Networks, Inc. All rights reserved.
The information in this document is current as of the date on the title page.
ii
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.
Table of Contents
1
About the Documentation | 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
iii
EX8208 System Overview
EX8208 System Overview | 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
EX8208 Chassis | 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
EX8208 Cooling System | 53
Fan Tray | 54
Airflow Direction in the EX8208 Switch Chassis | 55
iv
EX8200 Power System | 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
EX8208 Host Subsystem | 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
EX8200 Line Cards | 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
v
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
Site Planning, Preparation, and Specifications
2
Site Preparation Checklist for an EX8200 Switch | 108
EX8208 Site Guidelines and Requirements | 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
vi
Calculating the Number of Power Supplies Required for Your EX8208 Switch
Configuration | 124
EX8200 Network Cable and Transceiver Planning | 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
EX8200 Management Cable Specifications and Pinouts | 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
Initial Installation and Configuration
3
Unpacking and Mounting the EX8208 Switch | 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
Register Products—Mandatory to Validate SLAs | 147
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
Connecting the EX8200 to Power | 164
vii
Connect Earth Ground to an EX Series Switch | 164
Parts and Tools Required for Connecting an EX Series Switch to Earth Ground | 165
Special Instructions to Follow Before Connecting Earth Ground to an EX Series Switch | 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
Connecting the EX8200 to External Devices | 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
Connecting the EX8200 to the Network | 188
Install a Transceiver | 189
Connect a Fiber-Optic Cable | 191
Configuring Junos OS on the EX8200 | 193
4
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
Dashboard for EX Series Switches | 205
Graphical Chassis Viewer | 206
System Information Panel | 208
Health Status Panel | 211
Capacity Utilization Panel | 215
Alarms Panel | 216
viii
File System Usage | 216
Chassis Viewer | 216
Maintaining Components
Maintaining the EX8208 Cooling System | 235
Removing a Fan Tray from an EX8208 Switch | 235
Installing a Fan Tray in an EX8208 Switch | 237
Maintaining the EX8200 Power System | 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
Maintaining the EX8200 Power Cord Tray | 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
Maintaining the EX8208 Host Subsystem | 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
Maintaining the EX8200 Line Cards | 261
Handling and Storing Line Cards | 262
Holding a Line Card | 262
Storing a Line Card | 266
ix
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
Maintain Transceivers | 275
Remove a Transceiver | 275
Remove a QSFP28 Transceiver | 279
Install a Transceiver | 281
Install a QSFP28 Transceiver | 283
Maintain Fiber-Optic Cables | 285
Connect a Fiber-Optic Cable | 285
Disconnect a Fiber-Optic Cable | 286
How to Handle Fiber-Optic Cables | 287
Removing an EX8208 from a Rack or Cabinet | 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
Removing a Battery from an EX8208 Switch for Recycling | 296
Troubleshooting Hardware
5
6
7
Troubleshooting EX8200 Components | 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
Contacting Customer Support and Returning the Chassis or Components
Returning an EX8200 Chassis or Components | 326
Returning an EX8200 Switch or Component for Repair or Replacement | 326
Locating the Serial Number on an EX8200 Switch or Component | 327
x
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
Safety and Compliance Information
General Safety Guidelines and Warnings | 347
Definitions of Safety Warning Levels | 348
Qualified Personnel Warning | 351
Warning Statement for Norway and Sweden | 352
Fire Safety Requirements | 352
Fire Suppression | 352
Fire Suppression Equipment | 352
Installation Instructions Warning | 354
Chassis and Component Lifting Guidelines | 354
Restricted Access Warning | 356
Ramp Warning | 358
Rack-Mounting and Cabinet-Mounting Warnings | 359
Grounded Equipment Warning | 365
Radiation from Open Port Apertures Warning | 366
Laser and LED Safety Guidelines and Warnings | 367
General Laser Safety Guidelines | 367
Class 1 Laser Product Warning | 368
Class 1 LED Product Warning | 369
Laser Beam Warning | 370
Maintenance and Operational Safety Guidelines and Warnings | 370
xi
Battery Handling Warning | 372
Jewelry Removal Warning | 373
Lightning Activity Warning | 375
Operating Temperature Warning | 376
Product Disposal Warning | 378
General Electrical Safety Guidelines and Warnings | 379
Action to Take After an Electrical Accident | 380
Prevention of Electrostatic Discharge Damage | 381
AC Power Electrical Safety Guidelines | 382
AC Power Disconnection Warning | 384
DC Power Electrical Safety Guidelines | 385
DC Power Disconnection Warning | 386
DC Power Grounding Requirements and Warning | 388
DC Power Wiring Sequence Warning | 390
DC Power Wiring Terminations Warning | 393
Multiple Power Supplies Disconnection Warning | 396
TN Power Warning | 397
Agency Approvals for EX Series Switches | 397
Battery Compliance Statement for Environmental Requirements for EX Series
Switches | 398
Compliance Statements for EMC Requirements for EX Series Switches | 399
Canada | 399
Taiwan | 400
European Community | 400
Israel | 401
Japan | 401
Korea | 401
United States | 402
FCC Part 15 Statement | 402
xii
Nonregulatory Environmental Standards | 402
Compliance Statements for Acoustic Noise for EX Series Switches | 403
About the Documentation
IN THIS SECTION
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
troubleshooting for the EX8208 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.
xiii
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;
}
}
}
}
xiv
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]
xv
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 xvi defines notice icons used in this guide.
Table 1: Notice Icons
xvi
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 xvi 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)
xvii
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)
xviii
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/
•
xix
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/.
1
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
EX8208 System Overview
IN THIS SECTION
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
EX8208 Switch Hardware Overview
21
IN THIS SECTION
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-class reliability for high-density environments such as campus-aggregation and data-center networks.
The EX8208 switch is a modular system that provides high availability and redundancy for all major hardware
components, including Routing Engines, switch fabric, fan tray (redundant fans), and power supplies.
You can form an EX8200 Virtual Chassis by connecting individual EX8200 switches to an XRE200 External
Routing Engine. A Virtual Chassis is multiple switches connected together that operate as a single network
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).
Benefits of the EX8208 Switch
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.
High capacity—With a total capacity of up to 6.2 Terabits per second (Tbps), EX8208 is a powerful modular
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
Service Now solution, a comprehensive set of tools that enable Juniper Networks J-Care Technical Service
offerings to automate the delivery of tailored, proactive network intelligence and support services.
22
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.
Chassis Physical Specifications, LCD Panel, and Backplane
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.
Figure 1: EX8208 Switch
g020500
Fan tray
Line cards
SRE1 module
SF module
SRE0 module
AC power
supplies
Lift handle
Line cards
ESD
point
Front-mounting
bracket
Chassis
status LEDs
LCD
panel
23
The EX8208 switch has a chassis-level LCD panel that displays Routing Engine and switch fabric status as
well as chassis components’ alarm information for rapid problem identification. The LCD panel provides
a user-friendly interface for performing initial switch configuration, rolling back a configuration, or restoring
the switch to its default settings. See LCD Panel in an EX8200 Switch.
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.
Routing Engines and Switch Fabric
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
configuration EX8208 switch has one SRE module. A redundant configuration EX8208 switch has a second
SRE module. See “EX8208 Switch Configurations” on page 27.
The Switch Fabric (SF) module, working with the SRE module, provides the necessary switching functionality
to a base configuration EX8208 switch. The SF module is installed in the front of the chassis in the slot
labeled SF. In a redundant configuration, the SF module provides full 2+1 switch fabric redundancy to the
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 XRE200 External
Routing Engine Hardware Overview.
Line Cards
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.
24
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.
Table 3: Line Cards Available for EX8200 Switches
Additional InformationDescriptionModel
8-port SFP+ line cardEX8200-8XS
8-port SFP+ line card, extra-scaleEX8200-8XS-ES
40-port SFP+ line cardEX8200-40XS
40-port SFP+ line card, extra-scaleEX8200-40XS-ES
“8-port SFP+ Line Card in an EX8200 Switch”
on page 86
“8-port SFP+ Line Card in an EX8200 Switch”
on page 86
“40-port SFP+ Line Card in an EX8200
Switch” on page 88
“40-port SFP+ Line Card in an EX8200
Switch” on page 88
EX8200-2XS-40P
“EX8200-2XS-40P Line Card” on page 9240-port PoE+ with 4-port SFP and
2-port SFP+ line card
Table 3: Line Cards Available for EX8200 Switches (continued)
25
Additional InformationDescriptionModel
EX8200-2XS-40T
2-port SFP+ line card
48-port RJ-45 line cardEX8200-48T
48-port RJ-45 line card, extra-scaleEX8200-48T-ES
48-port SFP line cardEX8200-48F
48-port SFP line card, extra-scaleEX8200-48F-ES
“EX8200-2XS-40T Line Card” on page 9440-port RJ-45 with 4-port SFP and
“EX8200-48PL Line Card” on page 9748-port PoE+ 20 Gbps line cardEX8200-48PL
“EX8200-48TL Line Card” on page 9948-port RJ-45 20 Gbps line cardEX8200-48TL
“48-Port RJ-45 Line Card in an EX8200
Switch” on page 103
“48-Port RJ-45 Line Card in an EX8200
Switch” on page 103
“48-Port SFP Line Card in an EX8200 Switch”
on page 101
“48-Port SFP Line Card in an EX8200 Switch”
on page 101
NOTE: We recommend that you do not install extra-scale line card models and non-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
default to those of the non-extra-scale models and you will not get the benefit of the increased
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.
Cooling System
The cooling system in an EX8208 switch consists of a hot-removable and hot-insertable FRU fan tray. 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.
Power Supplies
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.
Table 4: Power Supplies Supported on EX8208 Switches
Output PowerInput VoltagePower Supply
1200 WLow-voltage line (100-120 VAC)2000 W AC
2000 WHigh-voltage line (200-240 VAC)
Not supportedLow-voltage line (100-120 VAC)3000 W AC
3000 WHigh-voltage line (200-240 VAC)
26
2000 W-40 VDC through -72VDC2000 W DC
Only two AC power supplies (provided) are required to power on the base AC configuration switch. The
redundant AC configuration ships with six AC power supplies to provide the capacity to power the system
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: Mixing different types of power supplies (AC and DC) in the same chassis
is not supported.
SEE ALSO
EX8200 Virtual Chassis Overview
EX8208 Switch Configurations
Table 5 on page 27 lists the seven sample hardware configurations for an EX8208 switch—base (AC),
redundant (AC and DC versions), and fully loaded chassis (AC and DC versions)—and the components
included in each configuration.
The switch is shipped in only four of these seven configurations: base (AC with 2000 W AC power supplies),
base (AC with 3000 W AC power supplies), redundant (AC with 2000 W AC power supplies), and redundant
(DC).
Table 5: EX8208 Switch Hardware Configurations
Configuration ComponentsSwitch Configuration
27
Base configuration (AC with 2000 W AC power supplies)
Base configuration (AC with 3000 W AC power supplies)
Redundant configuration (AC with 2000 W AC power
supplies)
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
•
Chassis with backplane
•
One fan tray
•
One Switch Fabric and Routing Engine (SRE) module
•
One Switch Fabric (SF) module
•
Two 3000 W AC power supplies
•
Two power cords
•
Eight line card cover panels
•
Four power supply cover panels
•
Chassis with backplane
•
One fan tray
•
Two SRE modules
•
One SF module
•
Six 2000 W AC power supplies
•
Six power cords
•
Eight line card cover panels
•
Table 5: EX8208 Switch Hardware Configurations (continued)
Configuration ComponentsSwitch Configuration
28
Redundant configuration (DC)
Fully loaded chassis configuration (AC with 2000 W AC
power supplies)
Fully loaded chassis configuration (AC with 3000 W AC
power supplies)
Chassis with backplane
•
One fan tray
•
Two SRE modules
•
One SF module
•
Four 2000 W DC power supplies
•
16 DC power cable lugs
•
Eight line card cover panels
•
Chassis with backplane
•
One fan tray
•
Two SRE modules
•
One SF module
•
Six 2000 W AC power supplies
•
Six power cords
•
Eight line cards
•
Chassis with backplane
•
One fan tray
•
Two SRE modules
•
One SF module
•
Six 3000 W AC power supplies
•
Six power cords
•
Eight line cards
•
Fully loaded chassis configuration (DC)
Chassis with backplane
•
One fan tray
•
Two SRE modules
•
One SF module
•
Six 2000 W DC power supplies
•
24 DC power cable lugs
•
Eight line cards
•
NOTE: You can install up to eight line cards (any combination of line cards) in the switch.
NOTE: Line cards are not part of the base or redundant configuration. You must order them
separately.
NOTE: If you want to purchase additional power supplies (AC or DC) for your switch
configuration, you must order them separately.
EX8208 Switch Hardware and CLI Terminology Mapping
This topic describes the hardware terms used in EX8208 switch documentation and the corresponding
terms used in the Junos OS command line interface (CLI). See Table 6 on page 29.
29
Table 6: CLI Equivalents of Terms Used in Documentation for EX8208 Switches
Hardware
Item (CLI)
Item In
DocumentationValue (CLI)Description (CLI)
Switch chassis–EX8208Chassis
Backplane–EX8208-BP-SBackplane
Additional Information
“Chassis Physical
Specifications of an
EX8208 Switch” on
page 33
“Backplane in an EX8208
Switch” on page 49
Table 6: CLI Equivalents of Terms Used in Documentation for EX8208 Switches (continued)
30
Hardware
Item (CLI)
CB (n)
One of the
following:
EX8208-SRE320
•
EX8208-SF320
•
n is a value in the range
of 0–2.
Multiple line items appear
in the CLI if more than
one control board (CB) is
installed in the chassis.
CB0 and CB1 are always
SRE modules.
CB2 is always the SF
module.
Item In
DocumentationValue (CLI)Description (CLI)
The switch does not
have actual control
boards; see the
following entries for the
equivalent item on the
switch:
Switch Fabric and
Routing Engine (SRE)
module
Switch Fabric (SF)
module
Additional Information
“Switch Fabric and
Routing Engine (SRE)
Module in an EX8208
Switch” on page 78
“Switch Fabric (SF)
Module in an EX8208
Switch” on page 81
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