Juniper ACX7348 Istruzioni per l'installazione
ACX7348 Cloud Metro Router Hardware
Guide
Published
2023-12-18
Juniper Networks, Inc.
1133 Innovaon 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 respecve 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 publicaon without noce.
ACX7348 Cloud Metro Router Hardware Guide
Copyright © 2023 Juniper Networks, Inc. All rights reserved.
The informaon in this document is current as of the date on the tle page.
YEAR 2000 NOTICE
Juniper Networks hardware and soware products are Year 2000 compliant. Junos OS has no known me-related
limitaons through the year 2038. However, the NTP applicaon is known to have some diculty in the year 2036.
END USER LICENSE AGREEMENT
The Juniper Networks product that is the subject of this technical documentaon consists of (or is intended for use
with) Juniper Networks soware. Use of such soware is subject to the terms and condions of the End User License
Agreement ("EULA") posted at hps://support.juniper.net/support/eula/. By downloading, installing or using such
soware, you agree to the terms and condions of that EULA.
ii
Table of Contents
About This Guide | viii
1
Fast Track: Inial Installaon
Fast Track to Rack Installaon and Power | 2
Install the ACX7348 in a Rack | 2
Connect to Power | 3
2
Overview
ACX7348 System Overview | 7
ACX7348 Router Descripon | 7
Benets of ACX7348 Routers | 8
ACX7348 Field-Replaceable Units | 8
ACX7348 Router Component Redundancy | 9
ACX7348 System Soware Overview | 10
ACX7348 Chassis | 10
ACX7348 Chassis Descripon | 10
ACX7348 Physical Specicaons | 15
Cooling System and Airow in ACX7348 Routers | 16
Fan Trays | 17
Fan Status LEDs | 17
Airow | 19
Air Filter Unit | 20
Power Supply Cooling System | 21
ACX7348 Power System | 21
ACX7348 AC Power Supply Module Descripon | 22
ACX7348 DC Power Supply Module Descripon | 27
iii
ACX7348 Roung Engine | 31
ACX7300 Flexible PIC Concentrators | 36
ACX7K3-FPC-2CD4C | 37
FPC LEDs | 40
3
Site Planning, Preparaon, and Specicaons
ACX7348 Site Guidelines and Requirements | 43
Environmental Requirements and Specicaons for ACX7348 Routers | 43
General Site Guidelines | 44
Site Electrical Wiring Guidelines | 44
ACX7348 Grounding Cable and Lug Specicaons | 46
Clearance Requirements for Airow 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 Specicaons for ACX7348 | 55
Calculang Power Budget and Power Margin for Fiber-Opc Cables | 63
How to Calculate Power Budget for Fiber-Opc Cables | 63
How to Calculate Power Margin for Fiber-Opc Cables | 64
ACX7348 Management and Console Port Specicaons and Pinouts | 66
Management Cable Specicaons for ACX7348 Routers | 66
Management Port Connector Pinout Informaon for ACX7348 Routers | 67
Console Port Connector Pinout on ACX7348 Routers | 67
4
Inial Installaon and Conguraon
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 Inial Soware Conguraon 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 Roung Engine Maintenance | 118
Remove the Roung Engine from the ACX7348 Router | 118
Install the Roung 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
Troubleshoong Hardware
Troubleshoong the ACX7348 Router | 126
Alarm Types and Severity Classes on ACX7348 Routers | 126
7
Contacng 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 Roung Engine | 133
Locate the Serial Number ID Label on an ACX7348 Flexible PIC Concentrator | 134
Contact Customer Support to Obtain Return Material Authorizaon | 135
Guidelines for Packing and Shipping Hardware Components | 136
8
Safety and Compliance Informaon
Safety Informaon | 138
Compliance Statements for NEBS | 138
Compliance Statements for EMC Requirements | 138
vi
About This Guide
Use this guide to install hardware and perform inial soware conguraon, roune maintenance, and
troubleshoong for the ACX7348 Cloud Metro Router.
Aer compleng the installaon and basic conguraon procedures covered in this guide, refer to the
Junos OS Evolved documentaon for informaon about further soware conguraon.
viii
Fast Track to Rack Installaon and Power
SUMMARY
This procedure guides you through the simplest
steps for the most common installaon to get your
ACX7348 router in a rack and connect it to power.
Have more complex installaon 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 posion it in the rack, aligning the holes of the
mounng brackets with the holes in the front post of the rack. Align the boom hole in both the
mounng brackets with a hole in each rack post, making sure that the chassis is level.
3. Secure the mounng brackets to the rack by using four screws appropriate for your rack. Tighten the
screws.
2
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