Troubleshooting guide

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Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
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Chapter 2 Troubleshooting Overview
Troubleshooting Tools
Many analyzer vendors offer the capability to export the data from their analyzers into the
simulation/modeling tools, thus providing a source of real network data.
These simulation/modeling tools allow the network manager to see and test network performance before
committing to proposed designs or changes.
Cisco Supplied Tools
The following tools require user registration for access. The registered sites are noted beside the link.
To become a registered user, refer to http://www.cisco.com/register/ .
If you are accessing the tools from Cisco.com, go to the top of the Cisco.com page, and click Log In
before clicking the links below. Clicking Log In first will bring you to a login Screen. Clicking the links
on the Tools and Utilities page without clicking Log In will not bring up a login screen.
The Tools and Utilities index provides links to tools and utilities such as configuration, installation,
software download, troubleshooting, and assessment tools.
The Troubleshooting Tools index includes tools such as:
• Feature Navigator for Cisco IOS
• Cisco Error Message Decoder Tool
• Cisco IOS Upgrade Planner
• Command Lookup Tool
• Field Notice Alert Tool
• Output Interpreter Tool
• Software Advisor
• Software Bug Toolkit
The Output Interpreter can now also help you troubleshoot reloads on Catalyst 6500/6000, Catalyst
5500/5000, and Catalyst 4500/4000 Series switches, and on certain Catalyst 2900 models. Just paste the
output from the "show tech-support" command into the tool from a device running Catalyst OS, Cisco
IOS(R), or Integrated IOS(R). For a Catalyst 4500/4000 running Catalyst OS, also paste in the output
from the "show crashdump 1" command. Your customized analysis will identify the most likely bugs and
will show the OS version where these bugs have been fixed.
Other Troubleshooting Information Websites
These websites are provided to help you find the most current troubleshooting information:
• Search the Cisco TAC assistance website, at http://www.cisco.com/public/support/tac/home.shtml
• Use the troubleshooting tools at http://www.cisco.com/kobayashi/support/tac/tools_trouble.shtml
• Search cable products field notices at http://www.cisco.com/warp/public/770/61.html
• Find router and IOS architecture technical tips at
http://www.cisco.com/pcgi-bin/Support/browse/index.pl?i=Products
• If your system is still not responding, find help at
http://www.cisco.com/warp/public/63/why_hang.html