CDP spoofing is a network security threat that can be mitigated by taking precautionary measures.
[1] CDP may be used between Cisco routers, switches and other network equipment to advertise their software version, capabilities and IP address.
[1] These packets sent through CDP are not encrypted, creating the messages between devices to be easily read through plain-text.
[7] CDP spoofing is the creation of forged packets to impersonate other devices, either real or arbitrary.
The device's command line interface may also become unresponsive making it difficult to disable CDP during an ongoing attack.