Cisco Systems UBR10012 manual Press Return. The user Exec prompt appears

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Chapter 5 Replacing or Recovering Passwords

Password Recovery Procedure

Step 2 Configure the terminal to operate at 9600 baud, 8 data bits, no parity, and 1 stop bit.

Step 3 If you can log in to the router as a nonprivileged user, enter the show version command to display the existing configuration register value, then go to Step 6. If you cannot log in to the router at all, go to the next step.

Step 4 Press the Break key or send a break signal from the console terminal.

If break is enabled, the router enters the ROM monitor, indicated by the ROM monitor prompt (rommon>). Go to Step 6.

If break is disabled, power cycle the router (turn off the router or unplug the power cord, and then restore power). Then go to Step 5.

Step 5 Within 60 seconds of restoring the power to the router, press the break key or send a break signal. This action causes the router to enter the ROM monitor and display the ROM monitor prompt (rommon>).

Step 6 Set the configuration register using the configuration register utility. Enter the confreg command at the ROM monitor prompt as follows:

rommon> confreg

Answer yes to the enable “ignore system config info?” Press the return key at all other prompts to accept the existing value.

Step 7 Reboot the router by entering the reset command:

rommon> reset

The router initializes, the configuration register is set to 0x142, and the router boots the system image from Flash memory and enters the system configuration dialog (setup):

--- System Configuration Dialog --

Step 8 Enter no in response to the system configuration dialog prompts until the following message appears:

Press RETURN to get started!

Step 9 Press Return. The user EXEC prompt appears:

Router>

Step 10 Enter the enable command to enter privileged EXEC mode. Then enter the show startup-configcommand to display the passwords in the configuration file as follows:

Router# show startup-config

Step 11 Scan the configuration file display, looking for the passwords (the enable passwords are usually located near the beginning of the file, and the console login or user EXEC password is near the end). The passwords displayed appear similar to the following:

enable secret 5 $1$ORPP$s9syZt4uKn3SnpuLDrhuei enable password 23skiddoo

.

.

line con 0

password onramp

The enable secret password is encrypted and cannot be recovered; it must be replaced. Go to the next step to replace an enable secret, console login, or enable password. If there is no enable secret password, note the enable and console login passwords. If the enable and console login passwords are not encrypted, go to Step 16.

Cisco uBR10012 Universal Broadband Router Troubleshooting Guide

5-2

OL-1237-01

 

 

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Contents Corporate Headquarters Text Part Number OL-1237-01Copyright 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 Purpose AudienceRelated Documentation Document OrganizationChapter Description Cisco.com Obtaining DocumentationDocumentation Feedback Ordering DocumentationCisco TAC Website Obtaining Technical AssistanceOpening a TAC Case Obtaining Additional Publications and Information TAC Case Priority DefinitionsXii Basic Troubleshooting Checklist Basic Troubleshooting Tasks and Startup IssuesConfirming the Hardware Installation Last reset from power-on Displaying the Cisco IOS Software VersionHardware Troubleshooting Flowchart Displaying System Environment InformationCisco uBR10012 System Startup Sequence TCC+Startup Event Event Description PEM Faults and Fan Assembly Failures AC PEM FaultsFault Symptom Corrective Action Color DescriptionDC PEM Faults DC PEM Front Panel original model, UBR10-PWR-DC 2400W AC-Input Power Shelf AC OK Other Electrical ProblemsFault DC OKFan Assembly Module Faults Fan Assembly ModuleFan 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 Intf Booting Up with Redundant PRE-1 ModulesIOS Prot IOS RUNPRE-1 Module Faults Fault Steps to Take LEDEthernet Connection Problems C10000config#interface fastethernet0/0/0Console Port Serial Connection Problems Troubleshooting Common System Problems Troubleshooting System CrashesHigh CPU Utilization Problems ARP TrafficRouterconfig-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 Memory Problems Alignment ErrorsLow Memory Errors Memory Parity ErrorsParticle Pool Fallbacks Spurious Interrupts Spurious Memory Accesses OL-1237-01 Troubleshooting Line Cards General Information for Troubleshooting Line Card Crashes Command DescriptionSIG 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 Enabled PASS-THROUGHPOS EnableFail SRPWrap SyncPass Thru Troubleshooting the Gigabit Ethernet Line Card Gigabit Ethernet Line Card Faceplate and LED DescriptionsGigabit Ethernet Line Card Faults and Recommended Responses OL-1237-01 Password Recovery Procedure Overview Password Recovery ProcedurePress Return. The user Exec prompt appears Change all three passwords using the following commands OL-1237-01 Unsupported Commands Unsupported Frame Relay CommandsHccp Commands Mlppp CommandsSpectrum Management Commands Unsupported Mpls VPN CommandsUnsupported PPP Commands Unsupported Telco-Return CommandsOL-1237-01 Testing with Digital Multimeters and Cable Testers Equipment DescriptionTesting with TDRs Testing with TDRs and OTDRsTesting with OTDRs Testing with Network Monitors Testing with Breakout Boxes, Fox Boxes, and BERTs/BLERTsTesting with Network Analyzers Bert Enable LEDActive LED BlertMAINTENANCE, TCC+ ENABLE, OC-48 DPT/POSMAINTENANCE, OC-12 SRP/DPT POWER, OC-12 DPT/SRP POWER, TCC+STATUS, OC-12 DPT/SRP STATUS, TCC+ SYNC, OC-48 DPT/POS Maintenance LEDPower LED TX, OC-48 DPT/POS WRAP, OC-48 DPT/POSRX Carrier LED RX LED OC-12 DPT/SRP TCC+Present LED TCC+ RX Pkts LEDTX LED OC-48 DPT/POS TDR B-2Wrap LED IN-6