Cisco Systems UBR10012

3-20

CiscouBR10012 Universal Broadband Router Troubleshooting Guide

OL-1237-01

Chapter3 Tr oubleshooting PRE-1 Modul es

Troubleshooting Common System Problems

Contents

Main Page CONTENTS Page Page Page Preface Purpose Audience Document Organization Related Documentation Obtaining Documentation Cisco.com Ordering Documentation Documentation Feedback Obtaining Technical Assistance Cisco TAC Website Opening a TAC Case TAC Case Priority Definitions Obtaining Additional Publications and Information Page Basic Troubleshooting Tasks and Startup Issues Basic Troubleshooting Checklist Confirming the Hardware Installation 1-3 Displaying the Cisco IOS Software Version Displaying System Environment Information Hardware Troubleshooting Flowchart 1-5 CiscouBR10012 Universal Broadband Router Troubleshooting Guide OL-1237-01 Chapter1 Basic Troubles hooting Tasks and Startup Issues Cisco uBR10012 System Startup Sequence Cisco uBR10012 System Startup Sequence Page PEM Faults and Fan Assembly Failures AC PEM Faults Page DC PEM Faults 2-4 Figure2-2 DC PEM Front Panel (original model, UBR10-PWR-DC) Figure2-3 DC PEM Front Panel (current model with alarm connector, UBR10-PWR-DC-M) 2400W AC-Input Power Shelf Other Electrical Problems Fan Assembly Module Faults 2-8 CiscouBR10012 Universal Broadband Router Troubleshooting Guide OL-1237-01 Chapter2 PEM Faults and Fan Assembly Failures Fan Assembly Module Faults ALARMS Figure2-6 Fan Assembly Air Circulation Pattern Page Page Troubleshooting PRE-1 Modules Information Required for Troubleshooting PRE-1 Modules PRE Module Not Supported PRE-1 Module Status Screen Booting Up with Redundant PRE-1 Modules PRE-1 Module Faults PRE is standby (secondary). System is booting. Flashing yellow Flashing green Ethernet Connection Problems Console Port Serial Connection Problems Troubleshooting Common System Problems Troubleshooting System Crashes High CPU Utilization Problems ARP Traffic Page CPUHOG Errors Debug and System Messages Exec and Virtual Exec Processes Interrupts are Consuming a Large Amount of Resources Invalid Scheduler Allocate Configuration IP Input Processing One or More Processes is Consuming an Excessive Amount of Resources Problems with Access Lists Bus Errors Page Memory Problems Alignment Errors Correctable Alignment Errors Fatal Alignment Errors Low Memory Errors Memory Parity Errors Particle Pool Fallbacks Spurious Interrupts Spurious Memory Accesses Page Troubleshooting Line Cards General Information for Troubleshooting Line Card Crashes Page Cache Parity Errors Bus Errors Software-Forced Crashes Page Troubleshooting the Timing, Communication, and Control Plus Card Page Page Page Troubleshooting the OC-12 Packet-Over-SONET Line Card Page Troubleshooting the OC-12 Dynamic Packet Transport Spatial Reuse Protocol WAN Card Page Troubleshooting the Cisco uBR10012 OC-48 DPT/POS Line Card Page Troubleshooting the Gigabit Ethernet Line Card Page Page Replacing or Recovering Passwords Password Recovery Procedure Overview Password Recovery Procedure Page Page Page APPENDIX A Unsupported Commands Unsupported Frame Relay Commands HCCP Commands MLPPP Commands Unsupported MPLS VPN Commands Unsupported PPP Commands Spectrum Management Commands Unsupported Telco-Return Commands Page APPENDIX B Recommended Tools and Test Equipment Testing with Digital Multimeters and Cable Testers Testing with TDRs and OTDRs Testing with TDRs Testing with OTDRs Testing with Breakout Boxes, Fox Boxes, and BERTs/BLERTs Testing with Network Monitors Testing with Network Analyzers INDEX A B C F G H I M N O P R S T U V W