Juniper Networks ERX-1410, ERX-1440, ERX-700, ERX-705 manual

xii

Contents

Chapter 8 Troubleshooting

Diagnosing Problems	. 8-1
Power Failure	. 8-1
LED Activity	. 8-2
Module Cables	. 8-2
Initialization Sequence	. 8-2
Troubleshooting Power Failures	. 8-2
Understanding Status LEDs	. 8-3
LED Identification	. 8-3
LED Activity During Booting	. 8-7
Abnormal LED Activity	. 8-8
Redundancy Status	. 8-9
Monitoring Temperatures of Modules	8-10
Resetting Line Modules and SRP Modules	8-11
Double-Bit Errors on SRP Modules	8-11
Detecting Double-Bit Errors	8-11
Fixing Double-Bit Errors	8-12

Appendix A System Specifications

Appendix B Module Specifications

Module Assemblies and Model Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Connection Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Cable Lengths for X.21/V.35 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-21

Appendix C Cable Pinouts

SRP I/O Module	C-1
CT1 and CE1 I/O Modules	C-4

Appendix D Preparing Your Site

Your Preinstallation Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

Rack Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3

Mechanical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3

Space Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4

Cabling Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-7