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CCNP Practical Studies: Troubleshooting by Donna L. Harrington

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IOS Troubleshooting Tools

Cisco is more than just a hardware company. Cisco IOS provides you with powerful diagnostic programs such as show, ping, trace, log, and debug commands. Mastering them is important because some of these can be simple tools that can still save you a great deal of time.

Table 2-1 and the following sections review some basic IOS troubleshooting tools. The objectives here are to review the output and summarize the importance of the commands so that you can put them to practical use. Many times it is advantageous if you can physically inspect the hardware, such as the equipment, cables, and connectors; but maybe you can't. Lots of times you are remote to the problem, depending on your scenario, so it is critical to know the ...

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