Juniper ACX4000 Installation instructions

ACX4000 Universal Metro Router
Hardware Guide
Published
2022-01-27

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.
in the United States and other countries. All other trademarks, service marks, registered marks, or registered service
marks are the property of their respecve 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 publicaon without noce.
ACX4000 Universal Metro Router Hardware Guide
Copyright © 2022 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
soware, you agree to the terms and condions of that EULA.
ii

Table of Contents
About This Guide | ix
1
Overview
ACX4000 System Overview | 2
ACX4000 Universal Metro Router Overview | 2
ACX4000 Routers Hardware and CLI Terminology Mapping | 4
Packet Flow on ACX Series Routers | 7
Protocols and Applicaons Supported by ACX Series Routers | 8
ACX4000 Chassis | 42
ACX4000 Front Panel Overview | 42
ACX4000 Uplink Ports Overview | 44
ACX4000 Alarm Contact Port Overview | 48
ACX4000 Clocking Ports Overview | 50
ACX4000 Modular Interface Card (MIC) Overview | 51
ACX4000 LEDs Overview | 52
ACX4000 Cooling System | 56
ACX4000 Power System | 58
ACX4000 Power Overview | 58
ACX4000 Power Consumpon | 60
ACX4000 AC Power Specicaons | 61
ACX4000 AC Power Cord Specicaons | 62
ACX4000 DC Power Specicaons | 64
ACX4000 DC Power Cable and Lug Specicaons | 65
ACX4000 Router Grounding Specicaons | 67
iii

2
Site Planning, Preparaon, and Specicaons
Site Preparaon Checklist for ACX4000 Routers | 71
ACX4000 Site Guidelines and Requirements | 72
General Site Guidelines | 72
Site Electrical Wiring Guidelines | 73
Clearance Requirements for Airow and Hardware Maintenance on ACX4000 Routers | 74
Chassis Physical Specicaons for ACX4000 Routers | 75
ACX4000 Router Environmental Specicaons | 76
Cabinet Requirements for ACX4000 Routers | 78
Rack Requirements for ACX4000 Routers | 80
ACX4000 Network Cable and Transceiver Planning | 82
Determining Transceiver Support and Specicaons | 82
Calculang Power Budget and Power Margin for Fiber-Opc Cables | 83
How to Calculate Power Budget for Fiber-Opc Cables | 83
How to Calculate Power Margin for Fiber-Opc Cables | 84
Fiber-Opc Cable Signal Loss, Aenuaon, and Dispersion | 85
ACX4000 Alarm, Management, and Clocking Cable Specicaons and Pinouts | 87
Alarm Contact Port Pinouts for ACX4000 Routers | 87
Management Port Connector Pinout Informaon for ACX Series Routers | 89
Console or Auxiliary Port Connector Pinout on ACX Series Routers | 90
USB Port Specicaons for an ACX Series Router | 91
3
Inial Installaon and Conguraon
Installing and Connecng an ACX4000 Router Overview | 94
Unpacking and Mounng the ACX4000 Router | 95
Unpacking an ACX4000 Router | 95
Parts Inventory (Packing List) for an ACX4000 Router | 96
Installing the ACX4000 Mounng Brackets | 97
iv

Installing the ACX4000 Router in the Rack | 98
Connecng the ACX4000 to Power | 101
Connecng the ACX4000 Router to Earth Ground | 101
Connecng AC Power Cords to the ACX4000 Router | 102
Connecng DC Power Cables to the ACX4000 Router | 104
Connecng the ACX4000 to External Devices | 106
Connecng the ACX4000 Router to Management Devices | 107
Connecng the Router to a Network for Out-of-Band Management | 107
Connecng the Router to a Management Console or Auxiliary Device | 108
Connecng the ACX4000 Router to External Clocking Devices | 110
Connecng 1PPS and 10MHz Timing Devices to the ACX4000 Router | 110
Connecng a T1 or E1 External Clocking Device to the ACX4000 Router | 110
Connecng the ACX4000 Router to an External Alarm-Reporng Device | 111
Inially Conguring the ACX4000 Router | 112
4
Maintaining components
Maintaining ACX4000 Components | 118
Roune Maintenance Procedures for the ACX4000 Router | 118
Maintaining Cables That Connect to ACX4000 Network Ports | 119
Maintaining the ACX4000 Uplink Ports | 121
Replacing an ACX4000 MIC | 122
Removing an ACX4000 MIC | 122
Installing an ACX4000 MIC | 124
Replacing an ACX4000 Transceiver | 126
Removing an ACX4000 Transceiver | 126
Installing an ACX4000 Transceiver | 127
Replacing an ACX4000 Fiber-Opc Cable | 128
Disconnecng an ACX4000 Fiber-Opc Cable | 129
Connecng an ACX2000 Fiber-Opc Cable | 130
v

Replacing an ACX4000 Management Ethernet Cable | 131
Removing an ACX4000 Management Ethernet Cable | 131
Installing an ACX4000 Management Ethernet Cable | 132
Replacing an ACX4000 Console or Auxiliary Cable | 132
Removing an ACX4000 Console or Auxiliary Cable | 132
Installing an ACX4000 Console or Auxiliary Cable | 133
Replacing an ACX4000 Air Filter | 134
Removing an ACX4000 Air Filter | 134
Installing an ACX4000 Air Filter | 135
Replacing an ACX4000 Fan Tray | 137
Removing an ACX4000 Fan Tray | 137
Installing an ACX4000 Fan Tray | 138
Replacing an ACX4000 AC Power Supply | 139
Removing an ACX4000 AC Power Supply | 140
Installing an ACX4000 AC Power Supply | 142
Replacing an ACX4000 DC Power Supply | 143
Removing an ACX4000 DC Power Supply | 143
Installing an ACX4000 DC Power Supply | 146
5
Troubleshoong Hardware
Troubleshoong the ACX4000 Router | 151
Troubleshoong Resources for ACX4000 Routers | 151
Monitoring System Log Messages | 152
Alarm Types and Severity Classes on ACX Series Routers | 153
Verifying Acve Alarms | 154
6
Contacng Customer Support
Contacng Customer Support and Returning the Chassis or Components | 157
Displaying ACX4000 Components and Serial Numbers | 157
ACX4000 Chassis Serial Number Label | 158
How to Return a Hardware Component to Juniper Networks, Inc. | 159
vi

Guidelines for Packing Hardware Components for Shipment | 159
Packing the ACX Series Router for Shipment | 160
7
Safety and Compliance Informaon
General Safety Guidelines and Warnings | 163
Denions of Safety Warning Levels | 164
Qualied Personnel Warning | 166
Warning Statement for Norway and Sweden | 166
Fire Safety Requirements | 167
Installaon Instrucons Warning | 168
Chassis and Component Liing Guidelines | 169
Restricted Access Warning | 169
Ramp Warning | 171
Rack-Mounng and Cabinet-Mounng Warnings | 171
Grounded Equipment Warning | 175
Radiaon from Open Port Apertures Warning | 176
Laser and LED Safety Guidelines and Warnings | 177
Maintenance and Operaonal Safety Guidelines and Warnings | 180
General Electrical Safety Guidelines and Warnings | 186
Acon to Take Aer an Electrical Accident | 187
Prevenon of Electrostac Discharge Damage | 188
AC Power Electrical Safety Guidelines | 189
AC Power Disconnecon Warning | 190
ACX4000 DC Power Electrical Safety Guidelines | 191
DC Power Copper Conductors Warning | 193
DC Power Disconnecon Warning | 193
vii

DC Power Grounding Requirements and Warning | 195
DC Power Wiring Sequence Warning | 195
DC Power Wiring Terminaons Warning | 197
Midplane Energy Hazard Warning | 198
Mulple Power Supplies Disconnecon Warning | 199
TN Power Warning | 199
Agency Approvals for ACX4000 Routers | 200
Compliance Statements for NEBS | 202
Compliance Statements for EMC Requirements | 203
Compliance Statements for Environmental Requirements | 204
Compliance Statements for Acousc Noise for ACX4000 Routers | 205
viii

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 ACX4000 Universal Metro router. Aer compleng the installaon and basic
conguraon procedures covered in this guide, refer to the Junos OS documentaon for informaon
about further soware conguraon.
RELATED DOCUMENTATION
ACX4000 Router Quick Start
Junos OS for ACX Series Universal Metro Routers
ACX4000 Interface Module Reference
ix

1
CHAPTER
Overview
ACX4000 System Overview | 2
ACX4000 Chassis | 42
ACX4000 Cooling System | 56
ACX4000 Power System | 58

ACX4000 System Overview
IN THIS SECTION
ACX4000 Universal Metro Router Overview | 2
ACX4000 Routers Hardware and CLI Terminology Mapping | 4
Packet Flow on ACX Series Routers | 7
Protocols and Applicaons Supported by ACX Series Routers | 8
ACX4000 Universal Metro Router Overview
IN THIS SECTION
Benets of the ACX4000 Router | 2
Chassis Descripon | 3
The ACX4000 Universal Metro Router is principally designed to provide superior management for rapid
provisioning to the access network. The ACX Series routers support rich Gigabit Ethernet and 10-
Gigabit Ethernet capabilies for uplink, along with support for legacy interfaces and Gigabit Ethernet
interfaces for radio and NodeB connecvity in a compact form factor that is environmentally hardened
and passively cooled. Seamless, end-to-end MPLS can be used to address legacy and emerging
requirements to provide the foundaon for a converged network that ulizes the same mobile backhaul
infrastructure for business or residenal services.
Benets of the ACX4000 Router
•Improved operaonal eciency with zero-touch deployment (ZTD)—The ACX Series routers
support a zero-touch deployment (ZTD) model that signicantly reduces the me for any new
equipment installaon and provisioning, resulng in improved operaonal eciency.
2

•Installaon exibility with an environmentally hardened design—Most ACX Series routers are
temperature hardened and support passive cooling for outdoor deployments in extreme weather
condions.
Chassis Descripon
The ACX Series router is a single-board router with a built-in Roung Engine and one Packet Forwarding
Engine that has two Flexible PIC Concentrators (shown in the CLI as FPC 0 and FPC 1). Because there is no
switching fabric, the single Packet Forwarding Engine takes care of packet forwarding:
•Roung Engine—Provides Layer 3 roung services and network management.
• Packet Forwarding Engine—Performs Layer 2 and Layer 3 packet switching, route lookups, and
packet forwarding.
The ACX Series router is powered by Junos OS, supporng extensive L2 and L3 features, IP/MPLS with
trac engineering, rich network management, fault management, service monitoring and Operaon,
Administraon, and Maintenance (OAM) capabilies, and an open soware development kit (SDK)
system that allows providers to customize and integrate operaons with their own management
systems. For a list of related Junos OS documentaon, see hps://www.juniper.net/documentaon/
soware/junos/.
As part of the mobile backhaul, the ACX Series router at the cell site and the MX Series router at the
aggregaon layer provide comprehensive end-to-end Ethernet, MPLS, and OAM features with the one
Junos OS running on both plaorms.
The ACX4000 routers are 2.5 rack units (U; that is, 4.375 in., or 11.11 cm) tall. Several routers can be
stacked in a single oor-to-ceiling rack for increased port density per unit of oor space.
The chassis is a rigid sheet metal structure that houses all the other router components (see Figure 1 on
page 4, and Figure 2 on page 4). The chassis measures 4.375 in. (11.11 cm) high, 9.5 in. (24.13 cm)
deep, and 17.5 in. (44.5 cm) wide. The outer edges of the mounng brackets extend the width to
19 in. (48 cm) (from the front-mounng brackets to the rear of the chassis). The chassis installs in
standard 300-mm deep (or larger) enclosed cabinets, 19-in. equipment racks, or telco open-frame racks.
The ACX4000 router contains eight combinaon Gigabit Ethernet ports, either RJ-45 or SFP ports. Two
of the Gigabit Ethernet RJ-45 ports support PoE. The ACX4000 router also supports installaon of two
addional Gigabit Ethernet SFP transceivers and two 10-Gigabit Ethernet SFP+ transceivers. The router
3

also has two dedicated slots for MICs. For a list of the supported MICs, see the ACX4000 Universal
Metro Router Interface Module Reference.
Figure 1: Front Panel of the ACX4000 Router
Figure 2: Rear View of the ACX4000 Router
SEE ALSO
Chassis Physical Specicaons for ACX4000 Routers | 75
ACX4000 Routers Hardware and CLI Terminology Mapping
Table 1 on page 5 describes the hardware terms used in ACX4000 router documentaon and the
corresponding terms used in the Junos OS command line interface (CLI). Figure 3 on page 7 shows
the port locaons of the interfaces.
4

Table 1: CLI Equivalents of Terms Used in Documentaon for ACX4000 Routers
Hardware
Item (as
displayed in
the CLI)
Descripon (as
displayed in the
CLI)
Value (as displayed
in the CLI)
Item in Documentaon Addional Informaon
Chassis ACX4000 – Router chassis "Chassis Physical
Specicaons for
ACX4000 Routers" on
page 75
FPC ( n ) Abbreviated name
of the Flexible PIC
Concentrator
(FPC)
ACX4000
Value of n is a
value in the range
of 0–1.
The router does not have
actual FPC devices; see
entries for FPC 0 and
FPC 1 for the equivalent
item on the router.
Interface Naming
Convenons Used in
the Junos OS
Operaonal Commands
FPC BUILTIN FPC 0 Refers to the built-in FPC
that houses the built-in
network ports.
FPC BUILTIN FPC 1 Slots in which one or two
MICs are installed
PIC ( n ) Abbreviated name
of the Modular
Interface Cards
(MICs) or built-in
interfaces
n is a value in the
range of 0–2.
The router supports up to
two MICs and has built-in
interfaces, both
represented as PIC in the
CLI; see entries for PIC 0
through PIC 2 for the
equivalent item on the
router.
Interface Naming
Convenons Used in
the Junos OS
Operaonal Commands
8x 1GE(LAN) SFP,
RJ45
FPC 0, PIC 0 Built-in network ports on
the front panel of the
router
"ACX4000 Uplink Ports
Overview" on page 44
5

Table 1: CLI Equivalents of Terms Used in Documentaon for ACX4000 Routers (Connued)
Hardware
Item (as
displayed in
the CLI)
Descripon (as
displayed in the
CLI)
Value (as displayed
in the CLI)
Item in Documentaon Addional Informaon
2x 1GE(LAN) SFP FPC 0, PIC 1 Built-in network ports on
the front panel of the
router
"ACX4000 Uplink Ports
Overview" on page 44
2x 10GE(LAN)
SFP+
FPC 0, PIC 2 Built-in network ports on
the front panel of the
router
"ACX4000 Uplink Ports
Overview" on page 44
<MIC 0
descripon>
FPC 1, PIC 0 MIC installed in slot 0 "ACX4000 Modular
Interface Card (MIC)
Overview" on page 51
<MIC 1
descripon>
FPC 1, PIC 1 MIC installed in slot 1 "ACX4000 Modular
Interface Card (MIC)
Overview" on page 51
Xcvr ( n ) Abbreviated name
of the transceiver
n is a value
equivalent to the
number of the port
in which the
transceiver is
installed.
Opcal transceivers "ACX4000 Modular
Interface Card (MIC)
Overview" on page 51
PEM ( n ) Power supply Value of n is a
value in the range
of 0–1.
AC or DC power supply "ACX4000 Power
Overview" on page 58
Fan Tray ( n ) Fan Tray Value of n is
always 0.
Fan tray module "ACX4000 Cooling
System" on page 56
6

Figure 3: ACX4000 Interface Port Mapping
Packet Flow on ACX Series Routers
The class-of-service (CoS) architecture for ACX Series routers is in concept similar to that for MX Series
routers. The general architecture for ACX Series routers is shown in Figure 4 on page 7.
Figure 4: ACX Series Router Packet Forwarding and Data Flow
Based on the model, ACX Series routers contain a built-in Roung Engine and Packet Forwarding Engine
and can contain both T1/E1 and Gigabit Ethernet Ports.
The Packet Forwarding Engine has one or two “pseudo” Flexible PIC Concentrators. Because there is no
switching fabric, the single Packet Forwarding Engine takes care of both ingress and egress packet
forwarding.
Fixed classicaon places all packets in the same forwarding class, or the usual muleld (MF) or
behavior aggregate (BA) classicaons can be used to treat packets dierently. BA classicaon with
rewall lters can be used for classicaon based on IP precedence, DSCP, IEEE, or other bits in the
frame or packet header.
However, the ACX Series routers can also employ mulple BA classiers on the same physical interface.
The physical interfaces do not have to employ the same type of BA classier. For example, a single
physical interface can use classiers based on IP precedence as well as IEEE 802.1p. If the CoS bits of
7

interest are on the inner VLAN tag of a dual-tagged VLAN interface, the classier can examine either the
inner or outer bits. (By default, the classicaon is done based on the outer VLAN tag.)
Eight queues per egress port support scheduling using the weighted decit round- robin (WDRR)
mechanism, a form of round-robin queue servicing. The supported priority levels are strict-high and
default (low). The ACX Series router architecture supports both weighted random early detect (WRED)
and weighted tail drop (WTD).
All CoS features are supported at line rate.
The packet pipeline through an ACX Series router is shown in Figure 5 on page 8. Note that the rate
liming is done with an integrated architecture along with all other CoS funcons. Scheduling and
shaping are supported on the output side.
Figure 5: ACX Series Router Packet Handling
Protocols and Applicaons Supported by ACX Series Routers
Table 2 on page 9 contains the rst Junos OS Release support for protocols and applicaons on ACX
Series routers. A dash indicates that the protocol or applicaon is not supported.
NOTE:
8

• The [edit logical-systems logical-system-name ] hierarchy level is not supported on ACX Series
routers.
• The ACX Series routers does not support per-family maximum transmission unit (MTU)
conguraon. The MTU applied to family inet gets applied to other families as well, even
though it can be congured though CLI and visible in show interface extensive output. The only
way to use higher MTU for a family is to manipulate the MTU, apply at interface or family inet
levels, and let it calculate for each family automacally. MTU values are not limited to 1500
but can range between 256 to 9216.
For more informaon, see the Knowledge Base (KB) arcle KB28179 at: hps://
kb.juniper.net/InfoCenter/index?page=content&id=KB28179.
Table 2: Protocols and Applicaons Supported by ACX Series Routers
Protocol or Applicaon ACX1
000
ACX1
100
ACX2
000
ACX2
100
ACX2
200
ACX4
000
ACX5
048
ACX5
096
ACX5
00
ACX5
448
Interface and Encapsulaon Types
Ethernet interfaces—1G,
10G
12.2 12.2R
2
12.2 12.2R
2
12.3X
54
–D15
12.3x
51
-D10
15.1X
54
–D20
15.1X
54
–D20
12.3X
54
–D20
(Indoo
r)
12.3X
54
–D25
(Outd
oor)
18.2R
1
Ethernet interfaces—
40G
––––––15.1X
54
–D20
15.1X
54
–D20
– 18.2R
1
ATM interfaces (IMA
only)
12.2 – 12.2 12.2R
2
– – – – – –
9

Table 2: Protocols and Applicaons Supported by ACX Series Routers (Connued)
Protocol or Applicaon ACX1
000
ACX1
100
ACX2
000
ACX2
100
ACX2
200
ACX4
000
ACX5
048
ACX5
096
ACX5
00
ACX5
448
E1 interfaces 12.2 – 12.2 12.2R
2
– – – – – –
T1 interfaces 12.2 – 12.2 12.2R
2
– – – – – –
Circuit emulaon
interfaces (SAToP,
CESoP)
12.2 – 12.2 12.2R
2
- 12.3x
51
-D10
– – – –
SONET/SDH interfaces – – – – – 12.3x
51
-D10
(requi
res a
MIC)
– – – –
Layer 3
Stac routes 12.2 12.2R
2
12.2 12.2R
2
12.3X
54
–D15
12.3x
51
-D10
15.1X
54
–D20
15.1X
54
–D20
12.3X
54
–D20
(Indoo
r)
12.3X
54
–D25
(Outd
oor)
18.2R
1
10

Table 2: Protocols and Applicaons Supported by ACX Series Routers (Connued)
Protocol or Applicaon ACX1
000
ACX1
100
ACX2
000
ACX2
100
ACX2
200
ACX4
000
ACX5
048
ACX5
096
ACX5
00
ACX5
448
OSPF 12.2 12.2R
2
12.2 12.2R
2
12.3X
54
–D15
12.3x
51
-D10
15.1X
54
–D20
15.1X
54
–D20
12.3X
54
–D20
(Indoo
r)
12.3X
54
–D25
(Outd
oor)
18.2R
1
IS-IS 12.2 12.2R
2
12.2 12.2R
2
12.3X
54
–D15
12.3x
51
-D10
15.1X
54
–D20
15.1X
54
–D20
12.3X
54
–D20
(Indoo
r)
12.3X
54
–D25
(Outd
oor)
18.2R
1
BGP 12.2 12.2R
2
12.2 12.2R
2
12.3X
54
–D15
12.3x
51
-D10
15.1X
54
–D20
15.1X
54
–D20
12.3X
54
–D20
(Indoo
r)
12.3X
54
–D25
(Outd
oor)
18.2R
1
11