CCNA Discovery 2, Chapter 5
5.4.4: The commands listed in Table 21-1 allow you to verify the function and configuration of a switch.
Table 21-1. Switch Troubleshooting Commands
As outlined in Table 21-1, CDP can verify Layer 2 connectivity even when a Layer 3 IP address is not properly configured. You can also use CDP to learn about the hardware and software configuration of connected devices with CDP enabled. You can disable CDP globally on your switch with the following command from global configuration mode:
no cdp run
You can disable CDP on a specific interface with the following command in interface configuration mode:
no cdp enable
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