Juniper MX204 Manuale utente

MX204 3D Universal Edge Router Quick

Start

January 2018

Part Number: 530-083413

Revision 04

This document describes how to install the Juniper Networks®MX204 3D Universal Edge

Router.

Contents MX204QuickStartDescription.........................................3

Step 1: Prepare the Site for MX204 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

MX204RouterRackRequirements..................................5

RouterClearanceRequirements....................................6

Router Cooling and Airflow Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Tools Required to Prepare the MX204 Router for Installation . . . . . . . . . . . . . . 7

Step 2: Install the MX204 Chassis in the Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Step3:ConnecttheGroundingCable...................................10

Step 4: Connect External Devices and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Connect the Router to a Network for Out-of-Band Management . . . . . . . . . . 12

Connect the Router to a Console Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Connect the Router to External Clocking and Timing Devices . . . . . . . . . . . . . 14

Connect 1-PPS and 10-MHz Timing Devices to the Router . . . . . . . . . . . . 14

Connect a Time-of-Day Device to the Router . . . . . . . . . . . . . . . . . . . . . . 14

Connect a BITS External Clocking Device to the Router . . . . . . . . . . . . . . 15

Step5:ConnectPowerCables.........................................15

ConnectPowertoanACRouter....................................16

ConnectPowertoaDCRouter.....................................17

Step 6: Perform Initial Software Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

EnterConfigurationMode.........................................19

Configure User Accounts and Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

ConfigureSystemAttributes......................................20

CommittheConfiguration.........................................21

SafetyWarnings....................................................22

ComplianceStatementsforNEBS.....................................24

Compliance Statements for EMC Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Canada .......................................................24

EuropeanCommunity............................................24

Israel .........................................................24

Japan .........................................................25

UnitedStates...................................................25

Junos OS Documentation and Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

RequestingTechnicalSupport.........................................25

Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

OpeningaCasewithJTAC........................................26

RevisionHistory....................................................26

MX204 3D Universal Edge Router Quick Start

MX204 Quick Start Description

This Quick Start contains information you need to install and configure the router quickly.

For complete installation instructions, see the MX204 3D Universal Edge Router Hardware

Guide at http://www.juniper.net/techpubs/.

WARNING: This Quick Start contains a summary of safety warnings in “Safety

Warnings” on page 22. For a complete list of warnings for this router, including

translations, see the MX204 3D Universal Edge Router Hardware Guide at

http://www.juniper.net/techpubs/.

The Juniper Networks MX204 3D Universal Edge Router 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.

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 3 shows the front of the MX204 router.

Figure 1: Front View of the MX204 Router

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Figure 2 on page 4 and Figure 3 on page 4 shows the rear of the fully configured routers.

MX204 Quick Start Description

Figure 2: Rear View of the AC-Powered MX204 Router

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1 2

2—1— Power supply modules (AC)Fan modules

Figure 3: Rear View of the DC-Powered MX204 Router

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1 2

2—1— Power supply modules (DC)Fan modules

The electrostatic discharge (ESD) points on the router are located both on the front and

on the rear of the chassis. Figure 4 on page 4 shows the electrostatic discharge (ESD)

point on the router.

CAUTION: Before removing or installing components, attach an ESD strap

to an ESD point, and attach the other end of the strap to your bare wrist.

Failure to use an ESD strap can result in damage to the hardware components.

Figure 4: ESD Points on the MX204 Router

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Front panel Rear panel

1— ESD point

Step 1: Prepare the Site for MX204 Installation

•MX204 Router Rack Requirements on page 5

•Router Clearance Requirements on page 6

•Router Cooling and Airflow Requirements on page 6

•Tools Required to Prepare the MX204 Router for Installation on page 7

MX204 3D Universal Edge Router Quick Start

MX204 Router Rack Requirements

The MX204 router can be installed in a standard 19-in. rack. Many types of racks are

acceptable, including four-post (telco) racks and open-frame racks. Table 1 on page 5

summarizes rack requirements and specifications for the router.

Table 1: Rack Requirements and Specifications for an MX204 Router

GuidelinesRack Requirement

Use a four-post rack. You can mount the router on any four-post rack that provides

bracket holes or hole patterns spaced at 1 U (1.75-in./4.44-cm) increments and that

meets the size and strength requirements specified in this table.

A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated

Equipment (document number EIA-310–D) published by the Electronics Components

Industry Association (http://www.ecianow.org/).

Rack type and mounting bracket hole

spacing

•Ensure that the rack is a 19-in. rack as defined in Cabinets, Racks, Panels, and

Associated Equipment (document number EIA-310–D) published by the Electronics

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

•Ensure that the rack is one of the following standard lengths:

•23.6 in. (600 mm)

•30.0 in. (762 mm)

•31.5 in. (800 mm)

•The rack rails must be spaced widely enough to accommodate the router chassis's

external dimensions (see MX204 Router Physical Specifications). The outer edges

of the mounting brackets extend the width to 19 in. (48.3 cm). The spacing of rails

and adjacent racks must also allow for the clearances around the router and rack.

•The router ships with the front-mounting brackets fixed in the front-mount position

on the chassis. You can move the rear-mounting brackets based on the depth of

the rack.

•The chassis height of 1.72 in. (4.37 cm) is approximately 1 U (rack unit).

•The rack must be strong enough to support the weight of the fully configured router,

up to 22.7 lb (10.3 kg).

•Either end of the router must be mounted flush with the rack and still be adjustable

for racks with different depths. The front and rear rack rails must be spaced between

23.62 in. (600 mm) and 31.5 in. (800 mm) front to back.

•Ensure that the spacing of rails and adjacent racks allows for the proper clearance

around the router and rack.

Rack size and strength

•Secure the rack to the building structure.

•If earthquakes are a possibility in your geographic area, secure the rack to the floor.

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

stability.

Rack connection to the building

structure

See Also MX204 Site Preparation Checklist•

•MX204 Installation Summary

•MX204 Router Physical Specifications

MX204 Router Rack Requirements

Router Clearance Requirements

For the cooling system to function properly, the airflow around the chassis must be

unrestricted. You must allow sufficient clearance around the installed chassis for cooling

and maintenance.

If you are mounting an MX204 in a rack with other equipment, ensure that the exhaust

from the other equipment does not blow into the intake vents of the MX204 chassis.

For service personnel to remove and install hardware components, and to accommodate

the interface and power cable bend radius, there must be adequate space at the front

and rear of the router. Allow at least 24 in. (61 cm) space in the front and rear of the

router. See Figure 5 on page 6.

Figure 5: Clearance Requirements for Airflow and Hardware Maintenance

for the MX204

Router Cooling and Airflow Requirements

•The router has front-to-back or airflow out (AFO) cooling system. Air is pulled through

the front of the chassis toward the fan tray, from where it is exhausted out of the

system. The power supplies are self-cooling and are located in the rear of the router.

•For the cooling system to function properly, the airflow around the chassis must be

unrestricted. Allow at least 6 in. (15.2 cm) of clearance between side-cooled routers.

Allow 2.8 in. (7 cm) between the side of the chassis and any non-heat-producing

surface such as a wall.

•The power supplies are self-cooling and are located in the rear of the router. The

exhaust for the power supplies are also located on the rear of the chassis.

•The rack or cabinet must have an adequate supply of cooling air. See

Figure 6 on page 7.

MX204 3D Universal Edge Router Quick Start

Figure 6: Airflow Through the MX204 Router

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Ports FRUs

Tools Required to Prepare the MX204 Router for Installation

•Blank panels to cover any slots not occupied by a component

•Mounting brackets, supplied with the router

•Sixteen screws for securing the mounting brackets to the chassis, supplied with the

router

•Phillips (+) screwdriver, number 2, not supplied

•Four mounting screws, supplied with the router

Step 2: Install the MX204 Chassis in the Rack

To install the router in a rack or cabinet:

1. Position the router in front of the rack or cabinet.

2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and to a

site ESD point.

3. Align the holes in the front mounting brackets with the holes on the side of the chassis

(see Figure 7 on page 7).

Figure 7: Attaching the Mounting Brackets

g100049

Tools Required to Prepare the MX204 Router for Installation

4. Using a Phillips (+) number 2 screwdriver, secure the mounting brackets to the router

using the mounting screws.

5. With one person on each side, hold on to the bottom of the chassis and carefully lift

it so that the mounting brackets contact the rack rails.

6. Carefully slide the router onto the mounting brackets until the front-mounting brackets

attached to the chassis contact the rack rails (see Figure 8 on page 8).

Figure 8: Installing the Router in a Four-Post Rack

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7. Install mounting screws into each of the open front-mounting holes aligned with the

rack, starting from the bottom, and secure them tightly. Figure 9 on page 8 shows

the router fully secured to the front rails of the four-post rack.

Figure 9: Router Secured by Front-Mounting Brackets

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8. On the rear of the chassis, slide the rear-mounting brackets on either side of the chassis

until the rear-mounting brackets contact the rack rails (see Figure 10 on page 9).

The rear-mounting brackets on each side of the chassis are movable. You can adjust

the brackets according to the depth of the rack.

MX204 3D Universal Edge Router Quick Start

Figure 10: Installing the Rear-Mounting Brackets

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9. Install mounting screws into each of the open rear-mounting holes aligned with the

rack, starting from the bottom, and secure them tightly.

10. Visually inspect the alignment of the chassis. If the chassis is installed properly in the

rack, all the mounting screws on one side of the rack are aligned with the mounting

screws on the opposite side and the router is level. Figure 11 on page 9 shows the

router fully secured and installed in a four-post rack.

Figure 11: Router Installed in the Rack

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Step 2: Install the MX204 Chassis in the Rack

Step 3: Connect the Grounding Cable

To meet safety and electromagnetic interference (EMI) requirements and to ensure

proper operation, the router must be adequately grounded before power is connected.

A protective earthing terminal bracket is required for connecting the chassis to earth

ground. This two-holed bracket attaches on the side of the chassis through the mounting

rail and provides a protective earthing terminal for the router. The grounding points are

in the form of studs sized for M5 Pan Head screws. The M5 Pan Head screws with

integrated washers are provided in the accessory kit. The grounding points are spaced

at 0.75-in. (19.1-mm) centers.

You ground the router by connecting a grounding cable to earth ground and then attaching

it to the chassis grounding points by using two M5 Pan Head screws. You must provide

the grounding cables (the cable lugs are supplied with the router).

NOTE: The grounding lug required is a Panduit LCD10-10A-L or equivalent

(not provided). The grounding lug accommodates 14–10 AWG (2–5.3 mm²)

stranded wire. The grounding cable that you provide for the chassis must be

the same size or heavier than the input wire of each power supply. Minimum

recommendations are 14–10 AWG (2–5.3 mm²) stranded wire, 60° C wire,

or as permitted by local code.

To ground the MX204 router:

1. Verify that a licensed electrician has attached the cable lug provided with the router

to the grounding cable.

2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect

the other end of the strap to an approved site ESD grounding point. See the instructions

for your site.

3. Ensure that all grounding surfaces are clean and brought to a bright finish before

grounding connections are made.

4. Connect the grounding cable to a proper earth ground.

5. Detach the ESD grounding strap from the site ESD grounding point.

6. Connect the grounding strap to one of the ESD points on the chassis.

Figure 4 on page 4 shows the ESD point on the router.

7. Place the grounding cable lug over the grounding point on the side of the chassis (see

Figure 12 on page 11).

MX204 3D Universal Edge Router Quick Start

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