Juniper ACX7348 Installation instructions

ACX7348 Cloud Metro Router Hardware
Guide
Published
2023-12-18

Juniper Networks, Inc.
1133 Innovaon 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.
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Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper Networks reserves the right
to change, modify, transfer, or otherwise revise this publicaon without noce.
ACX7348 Cloud Metro Router Hardware Guide
Copyright © 2023 Juniper Networks, Inc. All rights reserved.
The informaon in this document is current as of the date on the tle page.
YEAR 2000 NOTICE
Juniper Networks hardware and soware products are Year 2000 compliant. Junos OS has no known me-related
limitaons through the year 2038. However, the NTP applicaon is known to have some diculty in the year 2036.
END USER LICENSE AGREEMENT
The Juniper Networks product that is the subject of this technical documentaon consists of (or is intended for use
with) Juniper Networks soware. Use of such soware is subject to the terms and condions of the End User License
Agreement ("EULA") posted at hps://support.juniper.net/support/eula/. By downloading, installing or using such
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ii

Table of Contents
About This Guide | viii
1
Fast Track: Inial Installaon
Fast Track to Rack Installaon and Power | 2
Install the ACX7348 in a Rack | 2
Connect to Power | 3
2
Overview
ACX7348 System Overview | 7
ACX7348 Router Descripon | 7
Benets of ACX7348 Routers | 8
ACX7348 Field-Replaceable Units | 8
ACX7348 Router Component Redundancy | 9
ACX7348 System Soware Overview | 10
ACX7348 Chassis | 10
ACX7348 Chassis Descripon | 10
ACX7348 Physical Specicaons | 15
Cooling System and Airow in ACX7348 Routers | 16
Fan Trays | 17
Fan Status LEDs | 17
Airow | 19
Air Filter Unit | 20
Power Supply Cooling System | 21
ACX7348 Power System | 21
ACX7348 AC Power Supply Module Descripon | 22
ACX7348 DC Power Supply Module Descripon | 27
iii

ACX7348 Roung Engine | 31
ACX7300 Flexible PIC Concentrators | 36
ACX7K3-FPC-2CD4C | 37
FPC LEDs | 40
3
Site Planning, Preparaon, and Specicaons
ACX7348 Site Guidelines and Requirements | 43
Environmental Requirements and Specicaons for ACX7348 Routers | 43
General Site Guidelines | 44
Site Electrical Wiring Guidelines | 44
ACX7348 Grounding Cable and Lug Specicaons | 46
Clearance Requirements for Airow and Hardware Maintenance of ACX7348 Routers | 47
ACX7348 Rack and Cabinet Requirements | 48
Rack Requirements for ACX7348 Routers | 48
Cabinet Requirements for ACX7348 Routers | 49
ACX7348 Network Cable and Transceiver Planning | 51
Determining Transceiver Support for ACX7348 | 51
Cable and Connector Specicaons for ACX7348 | 55
Calculang Power Budget and Power Margin for Fiber-Opc Cables | 63
How to Calculate Power Budget for Fiber-Opc Cables | 63
How to Calculate Power Margin for Fiber-Opc Cables | 64
ACX7348 Management and Console Port Specicaons and Pinouts | 66
Management Cable Specicaons for ACX7348 Routers | 66
Management Port Connector Pinout Informaon for ACX7348 Routers | 67
Console Port Connector Pinout on ACX7348 Routers | 67
4
Inial Installaon and Conguraon
Unpack an ACX7348 Router | 70
Unpack the ACX7348 Shipping Pallet | 70
iv

Compare the ACX7348 Order to the Packing List | 71
Install the ACX7348 in a Rack | 72
Mount an ACX7348 in a Two-Post Rack | 72
Mount an ACX7348 in a Four-Post Rack | 74
Connect ACX7348 to Power | 79
Connect Earth Ground to ACX7348 Routers | 79
Connect AC Power to an ACX7348 Router | 81
Connect DC Power to an ACX7348 Router | 83
Connect ACX7348 to External Devices | 87
Connect an ACX7348 Router to a Management Console | 87
Connect an ACX7348 Router to a Network for Out-of-Band Management | 88
Connect to 1-PPS and 10-MHz Timing Devices | 89
Connect an ACX7348 Router to a GNSS Antenna | 90
Perform Inial Soware Conguraon for ACX7348 Routers | 93
5
Maintaining Components
ACX7348 Fan Tray Maintenance | 99
Remove a Fan Tray from the ACX7348 Router | 99
Remove a Fan Tray from the Rear of the Chassis | 100
Remove a Fan Tray from the Front of the Chassis | 100
Install a Fan Tray in the ACX7348 Router | 101
ACX7348 Air Filter Unit Maintenance | 102
Install Air Filter Unit in a Two-Post Rack | 103
Install Air Filter Unit in a Four-Post Rack | 105
Replace the Air Filter | 108
Remove the Air Filter | 108
Install the Air Filter | 109
ACX7348 Power Supply Module Maintenance | 110
Remove an ACX7348 AC Power Supply Module | 110
v

Install an ACX7348 AC Power Supply Module | 111
Remove an ACX7348 DC Power Supply Module | 113
Install an ACX7348 DC Power Supply Module | 115
ACX7348 Roung Engine Maintenance | 118
Remove the Roung Engine from the ACX7348 Router | 118
Install the Roung Engine in the ACX7348 Router | 119
ACX7348 Flexible PIC Concentrator Maintenance | 120
Remove a Flexible PIC Concentrator from the ACX7348 Router | 121
Install a Flexible PIC Concentrator in the ACX7348 Router | 123
6
Troubleshoong Hardware
Troubleshoong the ACX7348 Router | 126
Alarm Types and Severity Classes on ACX7348 Routers | 126
7
Contacng Customer Support and Returning the Chassis or Components
Returning an ACX7348 Chassis or Components | 129
How to Return a Hardware Component to Juniper Networks, Inc. | 129
How to Locate the Serial Number on an ACX7348 Router or Component | 130
List the Chassis and Component Details Using the CLI | 131
Locate the Chassis Serial Number ID Label on an ACX7348 Router | 131
Locate the Serial Number ID Label on an ACX7348 Fan Tray | 132
Locate the Serial Number ID Label on an ACX7348 Power Supply Module | 132
Locate the Serial Number ID Label on an ACX7348 Roung Engine | 133
Locate the Serial Number ID Label on an ACX7348 Flexible PIC Concentrator | 134
Contact Customer Support to Obtain Return Material Authorizaon | 135
Guidelines for Packing and Shipping Hardware Components | 136
8
Safety and Compliance Informaon
Safety Informaon | 138
Compliance Statements for NEBS | 138
Compliance Statements for EMC Requirements | 138
vi

Compliance Standards for ACX7348 Routers | 140
vii

About This Guide
Use this guide to install hardware and perform inial soware conguraon, roune maintenance, and
troubleshoong for the ACX7348 Cloud Metro Router.
Aer compleng the installaon and basic conguraon procedures covered in this guide, refer to the
Junos OS Evolved documentaon for informaon about further soware conguraon.
viii

1
CHAPTER
Fast Track: Inial Installaon
Fast Track to Rack Installaon and Power | 2

Fast Track to Rack Installaon and Power
SUMMARY
This procedure guides you through the simplest
steps for the most common installaon to get your
ACX7348 router in a rack and connect it to power.
Have more complex installaon needs? See "Install
the ACX7348 in a Rack" on page 72.
IN THIS SECTION
Install the ACX7348 in a Rack | 2
Connect to Power | 3
Install the ACX7348 in a Rack
You can install an ACX7348 router into a two-post rack, four-post rack, or a cabinet. We’ll walk you
through the steps to install an AC-powered ACX7348 router in a two-post rack.
Before you install, review the following:
•"ACX7348 Site Guidelines and Requirements" on page 43
•General Safety Guidelines and Warnings
1. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end
of the strap to the ESD point on the device.
2. Grasp both sides of the router, li the router, and posion it in the rack, aligning the holes of the
mounng brackets with the holes in the front post of the rack. Align the boom hole in both the
mounng brackets with a hole in each rack post, making sure that the chassis is level.
3. Secure the mounng brackets to the rack by using four screws appropriate for your rack. Tighten the
screws.
2

4. Ensure that the chassis is level by verifying that all screws on one side of the rack align with the
screws on the other side.
Connect to Power
IN THIS SECTION
Ground the ACX7348 Router | 4
Connect the Power Cord and Power On the Router | 4
3

To connect the ACX7348 router to AC power, you must do the following:
Ground the ACX7348 Router
To connect AC power to an ACX7348 router:
1. Verify that a licensed electrician has aached the cable lug that is provided with the router to the
grounding cable.
2. Ensure that all grounding surfaces are clean and brought to a bright nish before you make grounding
connecons.
3. Connect the grounding cable to a proper earth ground.
4. Place the grounding cable lug over the two-hole protecve grounding terminal on the rear side of the
chassis.
5. Secure the grounding cable lug with the screws.
6. Dress the grounding cable and verify that it does not touch or block access to router components,
and that it does not drape where people could trip over it.
Connect the Power Cord and Power On the Router
For informaon about the supported AC power cord specicaons, see "ACX7348 AC Power Cord
Specicaons" on page 25.
To connect an AC power cord to the ACX7348 router:
1. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the
other end of the strap to the ESD point on the chassis.
2. Power o the AC input appliance inlet on the source power supply.
4

3. Connect the power cord to the power source outlet.
NOTE: Each power supply module (PSM) must be connected to a dedicated AC power feed
and a dedicated customer-site 2-pole circuit breaker. We recommend that you use a
dedicated customer-site circuit breaker rated for 16 A, 250 VAC or as required by local
code.
4. Press the small tab on the power cord retainer strip to loosen the loop. Slide the loop unl you have
enough space to insert the power cord coupler into the inlet.
5. Insert the power cord coupler rmly into the inlet.
6. Slide the loop toward the PSM unl it is snug against the base of the coupler.
7. Press the tab on the loop and draw out the loop into a ght circle.
8. Route the power cord appropriately. Verify that the power cord does not block the air exhaust and
access to router components, or drape where people could trip over it.
9. Power on the source power supply.
10. Repeat Step "2" on page 4 through Step "9" on page 5 for connecng the other PSM to power.
5

2
CHAPTER
Overview
ACX7348 System Overview | 7
ACX7348 Chassis | 10
Cooling System and Airow in ACX7348 Routers | 16
ACX7348 Power System | 21
ACX7348 Roung Engine | 31
ACX7300 Flexible PIC Concentrators | 36

ACX7348 System Overview
SUMMARY
Learn about the ACX7348 cloud metro router, its
hardware components, and the Junos OS Evolved
soware that runs the ACX7348 router.
IN THIS SECTION
ACX7348 Router Descripon | 7
Benets of ACX7348 Routers | 8
ACX7348 Field-Replaceable Units | 8
ACX7348 Router Component
Redundancy | 9
ACX7348 System Soware Overview | 10
ACX7348 Router Descripon
The Juniper Networks® ACX7348 Cloud Metro Router is a mulservice plaorm from the ACX7300
series that addresses the growing demands of metro applicaons. With a compact 3-U semi-xed form
factor, this industrial-rated router oers an aggregaon soluon that gives cloud providers and service
providers the performance and scalability needed as networks grow.
The ACX7348 router provides 1-Gigabit Ethernet (GbE) through 400GbE port exibility and a
throughput of 2.4 Tbps. It has a xed Flexible PIC Concentrator (FPC), dual Roung Engines, three bays
for pluggable modules, redundant power supply modules (AC or DC), and four fan trays (two fans per
tray).
The ACX7348 router runs the Junos OS Evolved cloud-opmized operang system. It provides several
capabilies that include support for the latest protocol and trac engineering technologies, enhanced
security, and precision ming for mobile backhaul applicaons. You can use these capabilies and
features to create converged, virtualized, and automated architectures to address the rapid growth of
5G, IoT, and the cloud.
7

Figure 1: AC-Powered ACX7348 Router
Benets of ACX7348 Routers
•Compact and hardened cloud-era plaorm—Has a temperature-hardened and compact 3-U form
factor that enables you to address a broad range of industrial applicaons.
•Always-on infrastructure—Provides full hardware redundancy for the Roung Engines and power
supply modules (PSMs) to enable you to meet stringent service-level agreements (SLAs).
•Ease of deployment—Features a toolless setup and telescopic rails for a user-friendly installaon,
operaon, and maintenance of the chassis.
•Next-generaon capabilies—Supports next-generaon protocols including segment roung,
segment roung for IPv6 (SRv6), MPLS, and Ethernet VPN--Virtual Extensible LAN (EVPN-VXLAN).
•Media Access Control Security (MACsec) capabilies—Provides data plane security with inline
MACsec support. MACsec is supported on all ports except the eight QSFP28 ports on the xed FPC.
•High-power ZR/ZR+ transceiver support—Leverages an ecient thermal design to enable you to use
unrestricted high-power ZR/ZR+ transceivers across all supporng ports.
ACX7348 Field-Replaceable Units
Field-replaceable units (FRUs) are router components you can replace at the customer site. Replacing
most FRUs requires minimal router downme. The ACX7348 router uses the following types of FRUs:
• Hot-insertable and hot-removable—You can remove and replace these components without powering
o the router or disrupng the roung funcon.
• Hot-pluggable—You can remove and replace these components without powering o the router, but
the roung funcon is interrupted unl you replace the component.
8

Table 1: FRUs in an ACX7348 Router
FRU Type
Power supply modules (PSMs) Hot-insertable and hot-removable
Fan trays Hot-insertable and hot-removable
Air lter Hot-insertable and hot-removable
Roung Engines Hot-pluggable
Flexible PIC Concentrators (FPCs) Hot-pluggable
We recommend that you take the FPCs oine before
removing them. You can take FPCs oine by using the
request chassis fpc slot slot-number oine command.
Opcal transceivers Hot-pluggable
ACX7348 Router Component Redundancy
The following hardware components provide redundancy on ACX7348 routers:
•Roung Engines—A redundant system on an ACX7348 consists of two Roung Engines that are
available as eld-replaceable units (FRUs). One Roung Engine funcons as the primary and the
other funcons as the backup.
•Power supply modules (PSMs)—You can install up to two PSMs on ACX7348 routers to provide full
power, 1+1 redundancy to the device. Each PSM provides power to all components in the router. If
one PSM fails, or if you remove one PSM, the second PSM balances the electrical load without
interrupon.
9

ACX7348 System Soware Overview
The ACX7348 router runs Junos OS Evolved, which provides Layer 2 and Layer 3 switching, roung, and
security services. Junos OS Evolved runs navely on Linux and has direct access to all Linux ulies and
operaons. It has a modular design that supports upgrades on a component-by-component basis
without a system reboot. Only those components that are changed are restarted. Junos OS Evolved is
easily portable, and it requires minimal eort to make it work on any plaorm. Junos OS Evolved has a
modernized infrastructure, which ensures high availability, portability, faster innovaon, and simplied
upgrades.
For informaon about features supported on ACX Series routers, see Feature Explorer.
ACX7348 Chassis
SUMMARY
Learn about the ACX7348 router chassis, the eld
replaceable units (FRUs), and their physical
specicaons.
IN THIS SECTION
ACX7348 Chassis Descripon | 10
ACX7348 Physical Specicaons | 15
ACX7348 Chassis Descripon
IN THIS SECTION
Fixed FPC | 12
Timing Interface Ports | 13
The router chassis is a rigid sheet metal structure that houses all the router components. The ACX7348
router has a xed Flexible PIC Concentrator (FPC), dual Roung Engines, three bays for pluggable
modules, redundant power supply modules (AC or DC), and four fan trays (two fans per tray).
10

Figure 2 on page 11 shows the front of the chassis congured with two Roung Engines. The chassis
measures 5.21 in. (13.23 cm) high, 16.92 in. (42.97 cm) wide, and 11.41 in. (28.98 cm) deep. The chassis
installs in a standard 800 mm deep open rack, 19 in. equipment racks, or telco open-frame racks. For
more informaon about the physical specicaons of the router and its components, see Table 5 on
page 15.
Figure 2: Front View of an AC-Powered ACX7348 Router
1—ACX7300-FPC-2CD4C FPC 3—Roung Engine
2—AC PSMs 4—Fixed FPC
Figure 3: Rear View of an ACX7348 Router
1—Fan Tray 3—Protecve Grounding Terminal
11

2—Fan Tray LEDs
Fixed FPC
The ACX7348 router has a xed exible PIC concentrators (FPC) that has 48 SFP28 ports with MACsec
capabilies and 8 QSFP28 ports. Table 2 on page 12 shows the port speeds supported on the xed
FPC.
Figure 4: Fixed FPC
1—Forty-eight 1GbE/10GbE/25GbE SFP28
ports
2—Eight 40GbE/100GbE QSFP28 ports
Table 2: Ethernet Port Rates on the Fixed FPC
Nave Port Speed Port Number Total number of ports
1GbE 0-23 and 32-55 48
10GbE 0-23 and 32-55 48
25GbE 0-23 and 32-55 48
40GbE 24-31
NOTE: Each 40GbE port supports
4x10GbE breakout opon
8
12