Tools, Maintenance, and Troubleshooting Tips for Cisco IOS Software

Tools:

• IOS Command Lookup Tool (available to registered CCO users)

Search for commands in configuration guides and command references
• Cisco IOS DocGen (available to registered CCO users)

Generate customized command reference documents
• Error Message Decoder Tool (available to registered CCO users)
Research and resolve error messages
• Output Interpreter (available to registered CCO users)

Generate output analysis of 'show' commands
• Software Advisor (available to registered CCO users)

Compare Cisco IOS releases and determine which release supports your hardware
• Software Bug Toolkit (available to registered CCO users)

Search for known bugs by software version, feature set, and keyword
• Stack Decoder for IOS (available to registered CCO users)

Decode the stack trace generated by a router during a hardware failure
• MIB Locator (available to registered CCO users)

Obtain a list of MIBs included in a specific Cisco IOS release

Router and IOS Maintenance:

• How to Choose a Cisco IOS Software Release
• How To Copy a System Image from One Device to Another
• How to Protect Your System Against the Nimda Virus
• Capturing Text Output from Hyperterminal
• Xmodem Console Download Procedure Using ROMmon
• Configuring Basic System Parameters
• Initial Configuration Procedures
• Applying Correct Terminal Emulator Settings for Console Connections
• Software Installation and Upgrade Procedures
• Password Recovery Procedures
• Standard Break Key Sequence Combinations During Password Recovery

Understanding Error Messages:

• Troubleshooting Cisco IOS Software Scheduler-Related Error Messages
• What Causes %SYS-3-CPUHOG Messages?
• Spurious Accesses and Alignment Errors

Troubleshooting:

• Hardware Troubleshooting Index Page
• Troubleshooting Bus Error Exceptions
• Why Does My Router Lose Its Configuration During Reboot?
• Troubleshooting Router Hangs
• Troubleshooting Memory Problems - SYS-2-MALLOCFAIL
• Troubleshooting High CPU Utilization on Cisco Routers
• Troubleshooting Router Crashes
• Using CAR During DOS Attacks
• Boot Failure Recovery Procedures