4.1.5 This page will show students how to disable CDP.
To disable CDP at the global level, use the no cdp run command in global configuration mode. If CDP is disabled globally, individual interfaces cannot be enabled for CDP.
On Cisco IOS Release 10.3 or higher, CDP is enabled by default on all supported interfaces to send and receive CDP information. However, on some interfaces, such as asynchronous interfaces, CDP is disabled by default. If CDP is disabled use the cdp enable command in interface configuration mode. To disable CDP on a specific interface after it has been enabled, use the no cdp enable command in interface configuration mode.
The next page will introduce some commands that can be used to troubleshoot CDP.Troubleshooting CDP
4.1.6
This page will introduce some commands that can be used to show the version and update CDP information, tables, and traffic:
- clear cdp table
- clear cdp counters
- show cdp traffic
- show debugging
- debug cdp adjacency
- debug cdp events
- debug cdp ip
- debug cdp packets
- cdp timer
- cdp holdtime
- show cdp
The Lab Activities on this page will require students to use CDP commands to learn about other devices.
This page concludes this lesson. The next lesson will explain how to test and obtain information from remote devices.
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