Cisco Analysis Agreement (CDP)
CDP is a Cisco proprietary agreement for accessory analysis (media and agreement independent) that runs over OSI Band 2 (the data
link layer) on best Cisco accessories (routers, bridges, admission and advice servers, and switches). CDP displays information
about added anon affiliated Cisco devices. Arrangement administration applications and intruders can map the arrangement and retrieve
valuable advice of adjoining Cisco accessories leveraging CDP.
CDP is enabled by absence at the all-around akin and on anniversary accurate interface to accelerate and accept CDP information. However, some interfaces, CDP is disabled by absence (for example, on async interfaces).
CDP can be disabled globally for the accessory or on called interfaces. The no cdp run command from the all-around configuration
mode can be acclimated to attenuate CDP for the absolute device, as apparent in Archetype 3-5 .
Example 3-5. Attenuate CDP Globally
Router# configure terminal
Router(config)# no cdp run
Alternatively, CDP can be disabled on a accurate interface. The no cdp accredit command from the interface agreement mode
can be acclimated to attenuate CDP per interface, as apparent in Archetype 3-6 .
Example 3-6. Attenuate CDP per Interface
Router# configure terminal
Router(config)# interface
Router(config-if)# no cdp enable
The appearance cdp neighbors [detail] command can be acclimated to affectation advice about anon affiliated Cisco devices