Cisco Systems UBR10012 manual Corporate Headquarters, Text Part Number OL-1237-01

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Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

October 2004

Corporate Headquarters

Cisco Systems, Inc.

170 West Tasman Drive San Jose, CA 95134-1706

USA http://www.cisco.com Tel: 408 526-4000

800553-NETS (6387)

Fax: 408 526-4100

Text Part Number: OL-1237-01

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Contents Text Part Number OL-1237-01 Corporate HeadquartersCopyright 2001-2004, Cisco Systems, Inc All rights reserved N T E N T S ARP Traffic Testing with Digital Multimeters and Cable Testers B-1 OL-1237-01 Audience PurposeRelated Documentation Document OrganizationChapter Description Documentation Feedback Obtaining DocumentationCisco.com Ordering DocumentationCisco TAC Website Obtaining Technical AssistanceOpening a TAC Case TAC Case Priority Definitions Obtaining Additional Publications and InformationXii Basic Troubleshooting Tasks and Startup Issues Basic Troubleshooting ChecklistConfirming the Hardware Installation Displaying the Cisco IOS Software Version Last reset from power-onDisplaying System Environment Information Hardware Troubleshooting FlowchartTCC+ Cisco uBR10012 System Startup SequenceStartup Event Event Description AC PEM Faults PEM Faults and Fan Assembly FailuresColor Description Fault Symptom Corrective ActionDC PEM Faults DC PEM Front Panel original model, UBR10-PWR-DC 2400W AC-Input Power Shelf Fault Other Electrical ProblemsAC OK DC OKFan Assembly Module Fan Assembly Module FaultsFan Assembly Air Circulation Pattern Single FAN Failure Symptom Steps to TakeMULTI-FAN Failure LED OL-1237-01 Troubleshooting PRE-1 Modules PRE-1 Module Status Screen PRE Module Not SupportedMessage Description IOS Prot Booting Up with Redundant PRE-1 ModulesIOS Intf IOS RUNPRE-1 Module Faults LED Fault Steps to TakeC10000config#interface fastethernet0/0/0 Ethernet Connection ProblemsConsole Port Serial Connection Problems Troubleshooting System Crashes Troubleshooting Common System ProblemsARP Traffic High CPU Utilization ProblemsRouterconfig-if# ip access-groupnumber Debug and System Messages Cpuhog ErrorsExec and Virtual Exec Processes Interrupts are Consuming a Large Amount of Resources Invalid Scheduler Allocate ConfigurationIP Input Processing Problems with Access Lists Bus ErrorsSnmp Traffic Region Manager Start End Sizeb Class Media Name 0x0A000000 Alignment Errors Memory ProblemsMemory Parity Errors Low Memory ErrorsParticle Pool Fallbacks Spurious Interrupts Spurious Memory Accesses OL-1237-01 Troubleshooting Line Cards Command Description General Information for Troubleshooting Line Card CrashesSIG Value SIG Name Error Reason Sigerror Cache Parity ErrorsSigreload Bus Errors Software-Forced Crashes Troubleshooting Line Cards TCC+ Front Panel Maintenance PowerStatus Description Fault Type Response Show controllers clock-reference command Troubleshooting the OC-12 Packet-Over-SONET Line Card Fault Corrective Action Active RX CARRIER-BRX CARRIER-A PASS-THROUGH EnabledFail EnablePOS SRPWrap SyncPass Thru Gigabit Ethernet Line Card Faceplate and LED Descriptions Troubleshooting the Gigabit Ethernet Line CardGigabit Ethernet Line Card Faults and Recommended Responses OL-1237-01 Password Recovery Procedure Password Recovery Procedure OverviewPress Return. The user Exec prompt appears Change all three passwords using the following commands OL-1237-01 Unsupported Frame Relay Commands Unsupported CommandsMlppp Commands Hccp CommandsUnsupported PPP Commands Unsupported Mpls VPN CommandsSpectrum Management Commands Unsupported Telco-Return CommandsOL-1237-01 Equipment Description Testing with Digital Multimeters and Cable TestersTesting with TDRs Testing with TDRs and OTDRsTesting with OTDRs Testing with Breakout Boxes, Fox Boxes, and BERTs/BLERTs Testing with Network MonitorsTesting with Network Analyzers Active LED Enable LEDBert BlertMAINTENANCE, OC-12 SRP/DPT ENABLE, OC-48 DPT/POSMAINTENANCE, TCC+ POWER, OC-12 DPT/SRP POWER, TCC+Power LED Maintenance LEDSTATUS, OC-12 DPT/SRP STATUS, TCC+ SYNC, OC-48 DPT/POS TX, OC-48 DPT/POS WRAP, OC-48 DPT/POSPresent LED TCC+ OC-12 DPT/SRP TCC+RX Carrier LED RX LED RX Pkts LEDTX LED OC-48 DPT/POS TDR B-2Wrap LED IN-6