Cisco Systems UBR10012 manual Console Port Serial Connection Problems

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Chapter 3 Troubleshooting PRE-1 Modules

Console Port Serial Connection Problems

Step 2 Check that the Ethernet port in question is assigned a valid IP address.

For more information about configuring Ethernet ports, refer to the Cisco uBR10012 Universal Broadband Router Software Configuration Guide.

If the cable, connections, power, and configuration all check out, and you still cannot connect to the Ethernet port on the module, replace the module in question. If the problem persists, contact the Cisco TAC for further assistance. Refer to the “Obtaining Technical Assistance” section on page x for instructions on contacting the Cisco TAC.

Console Port Serial Connection Problems

If the console screen connected to a Cisco uBR10012 console port appears frozen or fails to work properly, check the following steps:

Step 1 Refer to the “Cisco uBR10012 System Startup Sequence” section on page 1-5. If the display stops responding during this process, there is no console output.

Step 2 Check the console cable and make sure it is properly connected to the console port on the active PRE-1 module at one end and to your terminal equipment or terminal server at the other end.

Note You cannot connect to the console port on the standby PRE-1 module. You must connect to the console port on the currently active PRE-1 module. If a switchover occurs, you must switch the serial cable to the new active PRE-1 module to maintain the console connection.

Step 3 Verify that you are using the right type of cable and adapter. For information about pin-out connections and installation instructions, refer to the Cisco uBR10012 Universal Broadband Router Hardware Installation Guide.

Step 4 Make sure the cable is not defective or broken. Replace the cable with another high quality cable if possible, and check to see if the console port starts working.

Step 5 Check that the terminal equipment is configured with the correct settings for the console port. The default console port settings are:

9600 baud

8 data bits

1 stop bit

No parity

No flow control

Step 6 Check the LEDs on the PRE-1 faceplate to make sure it has powered up properly. If necessary, remove and reinsert both PRE-1 modules to power them up again. Also, make sure the terminal equipment is working properly.

Step 7 The console can appear frozen if the PRE-1 processor is busy performing other tasks, such as parsing a large configuration file or passing a large burst of traffic. These periods are usually only temporary, and normal reaction resumes after a few moments.

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

 

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 PurposeChapter Description Document OrganizationRelated Documentation Ordering Documentation Obtaining DocumentationDocumentation Feedback Cisco.comOpening a TAC Case Obtaining Technical AssistanceCisco TAC Website 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 DC OK Other Electrical ProblemsFault AC OKFan Assembly Module Fan Assembly Module FaultsFan Assembly Air Circulation Pattern MULTI-FAN Failure LED Symptom Steps to TakeSingle FAN Failure OL-1237-01 Troubleshooting PRE-1 Modules Message Description PRE Module Not SupportedPRE-1 Module Status Screen IOS RUN Booting Up with Redundant PRE-1 ModulesIOS Prot IOS IntfPRE-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 Exec and Virtual Exec Processes Cpuhog ErrorsDebug and System Messages IP Input Processing Invalid Scheduler Allocate ConfigurationInterrupts are Consuming a Large Amount of Resources Snmp Traffic Bus ErrorsProblems with Access Lists 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 Sigreload Cache Parity ErrorsSigerror Bus Errors Software-Forced Crashes Troubleshooting Line Cards TCC+ Front Panel Status Description PowerMaintenance Fault Type Response Show controllers clock-reference command Troubleshooting the OC-12 Packet-Over-SONET Line Card Fault Corrective Action RX CARRIER-A RX CARRIER-BActive PASS-THROUGH EnabledSRP EnableFail POSPass Thru SyncWrap 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 Telco-Return Commands Unsupported Mpls VPN CommandsUnsupported PPP Commands Spectrum Management CommandsOL-1237-01 Equipment Description Testing with Digital Multimeters and Cable TestersTesting with OTDRs Testing with TDRs and OTDRsTesting with TDRs Testing with Breakout Boxes, Fox Boxes, and BERTs/BLERTs Testing with Network MonitorsTesting with Network Analyzers Blert Enable LEDActive LED BertPOWER, OC-12 DPT/SRP POWER, TCC+ ENABLE, OC-48 DPT/POSMAINTENANCE, OC-12 SRP/DPT MAINTENANCE, TCC+TX, OC-48 DPT/POS WRAP, OC-48 DPT/POS Maintenance LEDPower LED STATUS, OC-12 DPT/SRP STATUS, TCC+ SYNC, OC-48 DPT/POSRX Pkts LED OC-12 DPT/SRP TCC+Present LED TCC+ RX Carrier LED RX LEDWrap LED TDR B-2TX LED OC-48 DPT/POS IN-6