Juniper MX204 User manual

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
1Copyright © 2018, Juniper Networks, Inc.

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
Copyright © 2018, Juniper Networks, Inc.2
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.
3Copyright © 2018, Juniper Networks, Inc.
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
11
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
Copyright © 2018, Juniper Networks, Inc.4
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
5Copyright © 2018, Juniper Networks, Inc.
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.
Copyright © 2018, Juniper Networks, Inc.6
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
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7Copyright © 2018, Juniper Networks, Inc.
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.
Copyright © 2018, Juniper Networks, Inc.8
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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9Copyright © 2018, Juniper Networks, Inc.
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).
Copyright © 2018, Juniper Networks, Inc.10
MX204 3D Universal Edge Router Quick Start