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Cisco ME 3400 EthernetAccess Switch SoftwareConfiguration Guide
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Chapter22 Configuring CDP Configuring CDP
Use the no form of the CDP commands to return to the default settings.
This example shows how to configure CDP characteristics.
Switch# configure terminal
Switch(config)# cdp timer 50
Switch(config)# cdp holdtime 120
Switch(config)# cdp advertise-v2
Switch(config)# end
For additional CDP show commands, see the “Monitoring and Maintaining CDP” section on page 22-5.
Disabling and Enabling CDP
CDP is enabled by default on NNIs.
Note Cisco devices (such as Cisco IP Phones) regularly exchange CDP messages with co nnec ted devices.
Disabling CDP can interrupt device connectivity.
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
Step6 show cdp Verify your settings.
Step7 copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 no cdp run Disable CDP.
Step3 end Return to privileged EXEC mode.
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 cdp run Enable CDP after disabling it.
Step3 end Return to privileged EXEC mode.