Chapter 7: Troubleshooting a Switch Using Cisco IOS
Describing Cisco hardware and software products and their purposes
Gathering troubleshooting information about a Cisco switch
Inspecting Cisco switch memory contents
Using the show tech-support and the debug commands to inspect a Cisco switch
Troubleshooting switch connectivity
Gathering troubleshooting information about your network
Discovering your network using Cisco Discovery Protocol (CDP)
Troubleshooting the startup configuration
Troubleshooting the running configuration
Troubleshooting a Cisco switch is very similar to troubleshooting a Cisco router. Most IOS troubleshooting commands, such as the debug command, are the same for switches and routers, but the output differs in some cases. Most troubleshooting tools are available for both switches and routers, such as the ping and trace route tools, or the Cisco Network Assistant (CNA). Some troubleshooting tools are only available for routers, such as the Cisco Router and Security Device Manager (SDM) and SDM Express. Other troubleshooting tools are only available for switches, such as the Cisco Device Manager. You learn about switch troubleshooting tools and IOS commands in this chapter.
Troubleshooting Cisco Switches
Read this section to find out how to troubleshoot your Cisco switch using IOS commands and graphical user interface tools, such as the Cisco Device Manager and the Cisco Network Assistant (CNA).
Gathering information about the switch