Juniper ACX4000 Hardware Guide

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

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.

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

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