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8
Troubleshooting
This chapter explains how you can troubleshoot a specific problem at
system power-up, such as abnormal LED activity or no system power.
Diagnosing Problems
The information in this chapter can help you identify problems by
observing diagnostic signs. Your initial response to a system problem
should be to check power connections, observe the system’s LEDs
carefully, and check cable connections on the system modules.
If a problem is beyond the scope of this chapter, refer to Appendix F,
Customer Service for instructions.
Power Failure
When you power up the system and it does not respond normally, refer to
the troubleshooting suggestions in Table 8-1.
Topic Page
Diagnosing Problems 8-1
Troubleshooting Power Failures 8-2
Understanding Status LEDs 8-3
Monitoring Temperatures of Modules 8-10
Resetting Line Modules and SRP Modules 8-11
Double-Bit Errors on SRP Modules 8-11
- ERX Edge Routers 1
- Installation and User Guide 1
- EC Declaration of Conformity 4
- SOFTWARE LICENSE AGREEMENT 5
- Contents 10
- About This Guide 15
- Audience 16
- Conventions 16
- Documentation 17
- Abbreviations 18
- Contacting Customer Support 19
- ERX System Overview 21
- ERX-1400 Series 22
- The ERX System 23
- OC3 I/O module 25
- CT3/T3 I/O modules 25
- SRP I/O modulePower switches 25
- Power input module 25
- Where the ERX System Fits In 26
- ERX System Modules 27
- SRP Module 28
- Nonvolatile Storage 28
- SRP I/O Module 29
- Line Modules 30
- Packet Classification 30
- Network Management Tools 31
- Redundancy Features 31
- NVS Cards 32
- CHAPTER 1 34
- The Next Step 35
- Installing the ERX 37
- CHAPTER 2 38
- Installing the ERX System 38
- Unpacking the ERX-1400 Series 39
- Unpacking the ERX-700 Series 40
- ERX-1400 41
- Rack-Mounted Installation 42
- Installation 43
- ERX-1400 system 45
- ERX-700 system 45
- Installing ERX Modules 47
- ERX-700 seriesERX-1400 series 48
- Overview 49
- Protecting Modules and Slots 50
- Order of Installation 51
- Installing an SRP Module 54
- Ejector in open position 56
- Line Module I/O Module 58
- Removing a Module 59
- faceplate 60
- Installing the Line Modules 61
- Installing the I/O Modules 62
- CHAPTER 3 64
- Cabling the ERX 65
- Cabling Your ERX System 66
- Cabling the SRP I/O Module 71
- 26-AWG wire 72
- Wire-wrap connectors 72
- (North America, Japan) 72
- BNC (Europe) 72
- Console Ports 73
- Cabling I/O Modules 74
- Cabling RJ-45 Connectors 75
- Cabling RJ-48C Connectors 76
- Cabling LC Duplex Connectors 77
- Cabling SC Duplex Connectors 78
- Cabling SMB Connectors 79
- Cabling X.21/V.35 Connectors 80
- CHAPTER 4 82
- Cabling the ERX System 82
- Accessing the ERX 83
- Console Port Setup 84
- Assigning an IP Address 85
- Telnet Setup 86
- Powering Up the 89
- Powering Up 90
- Powering Down 91
- Maintaining the ERX 93
- 1 Enter the halt command 94
- Replacing an NVS Card 96
- Faceplate 97
- Release button 97
- NVS card 97
- Removing SFPs 98
- Installing SFPs 99
- Verifying the Installation 100
- Cleaning the System 101
- Replacing Fan Trays 101
- ERX-1400 series 102
- Removing the Fan Tray 103
- Installing the Fan Tray 103
- ERX-700 Series 104
- CHAPTER 7 106
- Maintaining the ERX System 106
- Troubleshooting 107
- LED Activity 108
- Module Cables 108
- Initialization Sequence 108
- Understanding Status LEDs 109
- • SRP module (Figure 8-1) 111
- Status LEDs 112
- Status LEDs 112
- LED Activity During Booting 113
- Abnormal LED Activity 114
- Redundancy Status 115
- Detecting Double-Bit Errors 117
- Fixing Double-Bit Errors 118
- System Specifications 119
- APPENDIX A 122
- Module Specifications 123
- Performance Specifications 126
- Connection Information 129
- › 0–68.5 m (0–225 feet) 132
- › 69–137 m (226–450 feet) 132
- › min: –9.5 dBm 133
- › max: –4 dBm 133
- › min: –17 dBm 133
- › max: –3 dBm 133
- APPENDIX B 144
- Cable Pinouts 145
- CT1 and CE1 I/O Modules 148
- 3456789 111213141516171819 150
- Preparing Your Site 153
- Environmental Requirements 154
- Safety Guidelines 154
- Rack Requirements 155
- Space Requirements 156
- APPENDIX D 158
- Cabling Recommendations 159
- Installing ERX System 161
- Software 161
- APPENDIX E 162
- Task 11: Reboot the System 166
- 5 Run the reload command 167
- Task 8: Reboot the System 171
- Task 2: Access the Boot Mode 172
- Task 3: Assign an IP Address 173
- Task 7: Reboot the System 174
- Declaration of 177
- Conformity 177
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