CDP: Cisco Discovery Protocol
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**CDP:** Cisco Discovery Protocol is a Cisco proprietary protocol that allows you discover directly connected Cisco devices. It is a data link layer (layer 2) network protocol and it send announcements to the multicast destination address 01-00-0c-cc-cc-cc.

Public domain
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### Checking all neighbors

    show cdp neighbors
    show cdp neighbors detail
    show cdp entry * 

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### Checking specific neighbor

    show cdp entry <Device ID> 

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### Disabling CDP per interface

    configure terminal 
    interface gigabitEthernet 1/0/1
    no cdp enable 
    exit
    exit

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### Disabling CDP globaly


    configure terminal 
    no cdp run
    exit
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_BY: Pejman Moghadam_  
_TAG: cdp_  
_DATE: 2012-02-01 18:33:00_