Disabling Cisco Discovery Protocol (CDP) on Cisco Router

Disable per interface:

Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config) #cdp run
Router(config) #interface FastEthernet0/0
Router(config-if) #no cdp enable
Router(config-if) #end
Router#

Disable globally:

Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config) #no cdp run
Router(config) #end
Router#