Juniper MX204 Manuale utente

MX204 Universal Routing Platform

Hardware Guide

Published

2019-10-14

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.

MX204 Universal Routing Platform 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.

ii

Table of Contents

About the Documentation | xi

Documentation and Release Notes | xi

Using the Examples in This Manual | xi

Merging a Full Example | xii

Merging a Snippet | xiii

Documentation Conventions | xiii

Documentation Feedback | xvi

Requesting Technical Support | xvi

Self-Help Online Tools and Resources | xvii

Creating a Service Request with JTAC | xvii

Overview

1

MX204 Router Overview | 21

Benefits of MX204 Router | 21

System Overview | 22

MX204 Chassis | 23

MX204 Chassis Description | 23

MX204 Component Redundancy | 25

MX204 Field-Replaceable Units | 26

MX204 Hardware Components and CLI Terminology | 26

MX204 Front and Rear Panel Components | 27

Front Panel Components | 27

Rear Panel Components | 28

Alarm LEDs on the MX204 Front Panel | 28

MX204 Cooling System | 29

MX204 Cooling System Description | 29

Fan Trays | 29

Airflow | 30

Power Supply Cooling System | 31

MX204 Fan Status LED | 31

iii

MX204 AC Power System | 32

MX204 Power System Description | 33

AC Power Supply Description | 34

DC Power Supply Description | 34

MX204 Power Supply Module LEDs | 35

AC Power Supply Module LEDs | 35

DC Power Supply Module LEDs | 37

MX204 Router AC Power Specifications | 38

AC Power Circuit Breaker Requirements for the MX204 Router | 39

AC Power Cord Specifications for MX204 Routers | 40

MX204 DC Power System | 42

MX204 Router DC Power Specifications | 42

DC Power Circuit Breaker Requirements for the MX204 Router | 43

DC Power Source Cabling for MX204 Router | 44

DC Power Cable Specifications for MX204 Router | 45

DC Power Cable Lug Specifications | 45

DC Power Cable Specifications | 45

MX204 Host Subsystem | 46

MX204 Routing Engine Description | 46

Routing Engine Functions | 46

Routing Engine Components | 47

Routing Engine Front Panel | 47

Routing Engine Interface Ports | 48

MX204 Routing Engine LEDs | 49

Site Planning, Preparation, and Specifications

2

MX204 Site Preparation Checklist | 53

MX204 Site Guidelines and Requirements | 54

MX204 Router Physical Specifications | 55

MX204 Router Environmental Specifications | 55

MX204 Router Grounding Specifications | 57

Grounding Points Specifications | 57

Grounding Cable Lug Specifications | 57

iv

Grounding Cable Specifications | 58

MX204 Router Cabinet Requirements and Specifications | 58

MX204 Router Clearance Requirements for Airflow and Hardware Maintenance | 60

MX204 Router Rack Requirements | 61

MX204 Network Cable and Transceiver Planning | 63

Calculating Power Budget and Power Margin for Fiber-Optic Cables | 63

Calculating Power Budget for Fiber-Optic Cable | 63

Calculating Power Margin for Fiber-Optic Cable | 64

CB-RE and RCB Interface Cable and Wire Specifications for MX Series Routers | 65

Understanding Fiber-Optic Cable Signal Loss, Attenuation, and Dispersion | 66

Signal Loss in Multimode and Single-Mode Fiber-Optic Cable | 66

Attenuation and Dispersion in Fiber-Optic Cable | 67

MX204 Management and Console Port Specifications and Pinouts | 68

RJ-45 Connector Pinouts for MX Series CB-RE or RCB Auxillary and Console Ports | 68

RJ-45 Connector Pinouts for an MX Series CB-RE or RCB Management Port | 69

MX204 Power Planning | 70

Power Consumption for an AC-Powered MX204 Router | 70

Power Requirements for MX204 Components | 70

Calculating System Thermal Output | 71

Power Consumption for a DC-Powered MX204 Router | 72

Power Requirements for MX204 Components | 72

Calculating System Thermal Output | 73

v

Initial Installation and Configuration

3

MX204 Installation Overview | 77

Unpacking the MX204 | 78

Tools and Parts Required to Unpack the MX204 Router | 78

Unpacking MX204 Router | 79

Verifying the MX204 Router Parts Received | 80

Installing the MX204 | 81

Tools Required to Install the MX204 Chassis in Rack | 82

Installing the MX204 Chassis in a Rack | 82

Installing the MX204 Chassis in a 19-in. Rack | 83

Installing the MX204 in a 21-in. ETSI Rack | 85

Connecting the MX204 to Power | 89

Tools and Parts Required for MX204 Router Grounding and Power Connections | 89

Grounding the MX204 Router | 90

Connecting Power to an AC-Powered MX204 Router | 91

Powering On an AC-Powered MX204 Router | 94

Connecting Power to a DC-Powered MX204 Router | 95

Powering On a DC-Powered MX204 Router | 98

Powering Off the MX204 Router | 99

Connecting the MX204 to the Network | 101

Tools and Parts Required to Connect the MX204 Router to External Devices | 101

Connecting the MX204 Router to External Devices and Cables | 102

Connecting the Router to a Network for Out-of-Band Management | 103

Connecting the Router to a Console Device | 103

Connecting the Router to External Clocking and Timing Devices | 105

Performing the Initial Software Configuration for the MX204 Router | 108

vi

Maintaining Components

4

Maintaining MX204 Components | 115

Routine Maintenance Procedures for MX204 Routers | 115

Maintaining the MX204 Routing Engine | 115

Replace an SFP+ Transceiver | 117

Remove an SFP+ Transceiver | 117

Install an SFP+ Transceiver | 119

Replace a QSFP28 Transceiver | 119

Remove a QSFP28 Transceiver | 120

Install a QSFP28 Transceiver | 121

Maintaining MX204 Cooling System Components | 122

Maintaining the MX204 Fan Module | 122

Replacing an MX204 Fan Module | 124

Removing an MX204 Fan Module | 124

Installing an MX204 Fan Module | 125

Maintaining MX204 Power System Components | 126

Maintaining the MX204 Power Supplies | 126

Replacing an MX204 AC Power Supply | 128

Removing an MX204 AC Power Supply | 128

Installing an MX204 AC Power Supply | 129

Replacing an MX204 DC Power Supply | 130

Removing an MX204 DC Power Supply | 130

Installing an MX204 DC Power Supply | 132

Contacting Customer Support and Returning the Chassis or Components

5

Contacting Customer Support and Returning the Chassis or Components | 137

Contacting Customer Support | 137

Contacting Customer Support to Obtain Return Material Authorization | 138

Locating the Serial Number on an MX204 Router or Component | 139

Listing the Chassis and Component Details Using the CLI | 139

Locating the Chassis Serial Number ID Label on an MX204 | 140

Locating the Serial Number ID Labels on MX204 Power Supplies | 140

vii

Locating the Serial Number ID Label on an MX204 Fan Module | 141

Guidelines for Packing Hardware Components for Shipment | 142

Safety and Compliance Information

6

Definitions of Safety Warning Levels | 145

General Safety Guidelines and Warnings | 147

General Safety Warnings for Juniper Networks Devices | 148

Qualified Personnel Warning | 149

Restricted-Access Area Warning | 150

Fire Safety Requirements | 152

Fire Suppression | 152

Fire Suppression Equipment | 153

Installation Instructions Warning | 154

Chassis and Component Lifting Guidelines | 154

Ramp Warning | 155

Rack-Mounting and Cabinet-Mounting Warnings | 155

Laser and LED Safety Guidelines and Warnings | 159

General Laser Safety Guidelines | 159

Class 1 Laser Product Warning | 160

Class 1 LED Product Warning | 161

Laser Beam Warning | 162

Radiation from Open Port Apertures Warning | 163

Maintenance and Operational Safety Guidelines and Warnings | 164

Battery Handling Warning | 165

Jewelry Removal Warning | 166

Lightning Activity Warning | 168

Operating Temperature Warning | 169

Product Disposal Warning | 171

General Electrical Safety Guidelines and Warnings | 172

viii

Prevention of Electrostatic Discharge Damage | 173

Site Electrical Wiring Guidelines | 174

AC Power Electrical Safety Guidelines | 175

AC Power Disconnection Warning | 177

DC Power Disconnection Warning | 178

DC Power Grounding Requirements and Warning | 180

DC Power Wiring Sequence Warning | 182

DC Power Wiring Terminations Warning | 185

Multiple Power Supplies Disconnection Warning | 188

TN Power Warning | 189

Action to Take After an Electrical Accident | 189

Agency Approvals for MX204 Router | 190

Compliance Statements for NEBS | 191

Compliance Statements for EMC Requirements | 192

Canada | 192

European Community | 192

Israel | 193

Japan | 193

United States | 193

Compliance Statements for Environmental Requirements | 194

Compliance Statements for Acoustic Noise for MX204 Router | 194

ix

About the Documentation

IN THIS SECTION

Documentation and Release Notes | xi

Using the Examples in This Manual | xi

Documentation Conventions | xiii

Documentation Feedback | xvi

Requesting Technical Support | xvi

Use this guide to install hardware and perform initial software configuration, routine maintenance, and

troubleshooting for the MX204 Universal Routing Platform. 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.

xi

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

xii

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]

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

relative configuration mode command:

[edit system scripts]

user@host# load merge relative /var/tmp/ex-script-snippet.conf

load complete

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

Documentation Conventions

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

xiii

Table 1: Notice Icons

DescriptionMeaningIcon

Indicates important features or instructions.Informational note

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

damage.

Caution

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

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

Indicates helpful information.Tip

Alerts you to a recommended use or implementation.Best practice

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

Table 2: Text and Syntax Conventions

ExamplesDescriptionConvention

To enter configuration mode, type

the configure command:

user@host> configure

Represents text that you type.Bold text like this

user@host> show chassis alarms

No alarms currently active

Represents output that appears on

the terminal screen.

Fixed-width text like this

•

A policy term is a named structure

that defines match conditions and

actions.

•

Junos OS CLI User Guide

•

RFC 1997, BGP Communities

Attribute

•

Introduces or emphasizes important

new terms.

•

Identifies guide names.

•

Identifies RFC and Internet draft

titles.

Italic text like this

xiv

Table 2: Text and Syntax Conventions (continued)

ExamplesDescriptionConvention

Configure the machine’s domain

name:

[edit]

root@# set system domain-name

domain-name

Represents variables (options for

which you substitute a value) in

commands or configuration

statements.

Italic text like this

•

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.

Represents names of configuration

statements, commands, files, and

directories; configuration hierarchy

levels; or labels on routing platform

components.

Text like this

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

variables.

< > (angle brackets)

broadcast | multicast

(string1 | string2 | string3)

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.

| (pipe symbol)

rsvp { # Required for dynamic MPLS

only

Indicates a comment specified on the

same line as the configuration

statement to which it applies.

# (pound sign)

community name members [

community-ids ]

Encloses a variable for which you can

substitute one or more values.

[ ] (square brackets)

[edit]

routing-options {

static {

route default {

nexthop address;

retain;

}

Identifies a level in the configuration

hierarchy.

Indention and braces ( { } )

Identifies a leaf statement at a

configuration hierarchy level.

; (semicolon)

GUI Conventions

xv

Table 2: Text and Syntax Conventions (continued)

ExamplesDescriptionConvention

•

In the Logical Interfaces box, select

All Interfaces.

•

To cancel the configuration, click

Cancel.

Represents graphical user interface

(GUI) items you click or select.

Bold text like this

In the configuration editor hierarchy,

select Protocols>Ospf.

Separates levels in a hierarchy of

menu selections.

> (bold right angle bracket)

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 [email protected]. 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

xvi

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/

•

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/.

xvii

1

CHAPTER

Overview

MX204 Router Overview | 21

MX204 Chassis | 23

MX204 Cooling System | 29

MX204 AC Power System | 32

MX204 DC Power System | 42

MX204 Host Subsystem | 46

MX204 Router Overview

The Juniper Networks MX204 Universal Routing Platform is an Ethernet-optimized edge router with

400-Gbps capacity that provides both switching and carrier-class Ethernet routing. The MX204 router

runs Junos operating system (Junos OS), enabling a wide range of business and residential applications

and services, including high-speed transport and virtual private network (VPN) services, next-generation

broadband multiplay services, and high-volume Internet data center internetworking. Each router provides

full duplex, high-density Ethernet interfaces and high-capacity switching throughput and uses the Junos

Trio chipset for increased scalability of Layer 2 and Layer 3 packet forwarding, buffering, and queuing.

Benefits of MX204 Router

•

System Capacity—MX204 provides 400 Gbps of throughput and supports high-density 100-Gigabit

Ethernet interfaces, and also discrete and breakout 10-Gigabit Ethernet and 1-Gigabit Ethernet

interfaces—all in a single rack unit while consuming only 0.9 W/Gb.

•

The Programmable Chipset—The chipset implemented in the MX Series routers has a programmable

forwarding data structure that allows fast microcode changes in the hardware itself, and a programmable

lookup engine that allows inline service processing. the chip’s programmable QoS engine supports coarse

and fine-grained queuing to address the requirements of core, edge, and aggregation use cases.

•

Always-on infrastructure base—MX Series routers ensure network and service availability with a broad

set of multilayered physical, logical, and protocol-level resiliency aspects. Junos OS Virtual Chassis

technology on MX Series routers supports chassis-level redundancy and enables you to manage two

routers as a single element. Multichassis link aggregation group (MC-LAG) implementation supports

stateful chassis, card, and port redundancy.

•

Application-Aware Networking—On MX Series routers you can use deep packet inspection to detect

applications, and by using the user-defined policies, you can determine traffic treatment for each

application. This feature enables highly customized and differentiated services at scale.

•

Junos Telemetry Interface—Using the Junos telemetry interface data, you can stream component-level

data to monitor, analyze, and enhance the performance of the network. Analytics derived from this

streaming telemetry can identify current and trending congestion, resource utilization, traffic volume,

and buffer occupancy.

•

Integrated Hardware-Based Timing— You do not need to use external clocks because MX Series routers

support highly scalable and reliable hardware-based timing, including Synchronous Ethernet for frequency,

and the Precision Time Protocol (PTP) for frequency and phase synchronization. Synchronous Ethernet

and PTP can be combined in a hybrid mode to achieve a high level of frequency (10 ppb) and phase (<1.5

uS) accuracy.

21

System Overview

The MX204 router is compact and one rack unit (1 U) tall. Several routers can be stacked in a single

floor-to-ceiling rack for increased port density per unit of floor space.

The MX204 router is a fixed-configuration router, and supports one built-in Routing Engine. The router

runs on AC or DC power, with two dedicated power supply modules on each device. Cooling is handled

by three fan modules.

The MX204 has four rate-selectable ports that can be configured as 100-Gigabit Ethernet ports or 40-Gigabit

Ethernet ports, or each port can be configured as four 10-Gigabit Ethernet ports (by using a breakout

cable). The MX204 also has eight 10-Gigabit Ethernet ports. The four rate-selectable ports support QSFP28

and QSFP+ transceivers, whereas the eight 10-Gigabit Ethernet ports support SFP+ transceivers.

Figure 1 on page 22 shows the front view of the MX204 router.

Figure 1: Front View of the MX204 Router

g009860

g0 0 9861

The MX204 router is a fixed-configuration router, and supports one built-in Routing Engine. The router

runs on AC or DC power, with two dedicated power supply modules on each device. Cooling is handled

by three fan modules. Table 3 on page 22 shows the components supported on the router.

Table 3: MX204 Router Components

DescriptionComponent

2Power supply module

3Fan module

22

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