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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 Configuring CDP
Configuring CDP
Beginning in privileged EXEC mode, follow these steps to disable the CDP device discovery capability:
Beginning in privileged EXEC mode, follow these steps to enable CDP when it has been disabled:
This example shows how to enable CDP if it has been disabled.
Switch# configure terminal
Switch(config)# cdp run
Switch(config)# end
Disabling and Enabling CDP on an Interface
CDP is enabled by default on all supported interfaces to send and to receive CDP information.
Note CDP bypass is not supported and may cause a port go into err-disabled state.
Beginning in privileged EXEC mode, follow these steps to disable CDP on a port:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
no cdp run Disable CDP.
Step 3
end Return to privileged EXEC mode.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
cdp run Enable CDP after disabling it.
Step 3
end Return to privileged EXEC mode.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Specify the interface on which you are disabling CDP, and enter
interface configuration mode.
Step 3
no cdp enable Disable CDP on the interface.
Step 4
end Return to privileged EXEC mode.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.
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