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23-4
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
Chapter 23 Configuring CDP
Configuring CDP
Disabling and Enabling CDP on an Interface
CDP is enabled by default on NNIs to send and to receive CDP information. You can enable CDP on
ENIs, but it is not supported on UNIs. Beginning in privileged EXEC mode, follow these steps to disable
CDP on a port:
Beginning in privileged EXEC mode, follow these steps to enable CDP on a port when it has been
disabled:
This example shows how to enable CDP on a port when it has been disabled.
Switch# configure terminal
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# cdp enable
Switch(config-if)# end
This example shows how to change a UNI to an ENI and enable CDP on the port.
Switch# configure terminal
Switch(config)# interface fastethernet0/1
Switch(config-if)# port-type eni
Switch(config-if)# cdp enable
Switch(config-if)# end
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.
Note If the interface is a UNI, you must enter the port-type nni or
port-type eni interface configuration command before
configuring CDP. By default, CDP is enabled on NNIs and
disabled on ENIs.
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.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Specify the interface on which you are enabling CDP, and enter
interface configuration mode.
Note If the interface is a UNI, you must enter the port-type nni or
port-type eni interface configuration command before
configuring CDP. By default, CDP is enabled on NNIs and
disabled on ENIs.
Step 3
cdp enable Enable CDP on the interface after disabling it.
Step 4
end Return to privileged EXEC mode.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.