27 Apr, 2019

Cisco Discovery Protocol (CDP)

CDP (Cisco Discovery Protocol) is a proprietary designed by Cisco System for Cisco devices. CDP helps admins in collecting information about Cisco devices like : IOS version number, hardware platform, hardware capabilities, Layer 3 address (IP address) of device , interface that generate CDP message, port ID, number of seconds for CDP advertisement is valid, device type, name of device configured with hostname.
R3# show cdp neighbors
R3# show cdp neighbors detail
To disable CDP globally
R1(config)# no cdp run
To disable CDP particular port
R1(config)# int fa0/0
R1(config-if)# no cdp enable

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