Command
CDP Enable
Use
This command is used to enable CDP on interfaces. By default it is enabled on most interfaces except for frame-relay interfaces.
Syntax
Router(config-if)#cdp enable
Example
In this example R1’s S1/1 interface is configured to authenticate R3 using PAP.
R1(config)#int fa0/0 |
Here we check the show cdp neighbor output to verify that it is working.
R2#show cdp neighbor Device ID Local Intrfce Holdtme Capability Platform Port ID |