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CDP was designed and implemented as a
simple, low-overhead protocol. Though a CDP frame can be small, it can
retrieve a great deal of useful information about connected
neighboring Cisco devices.
This information can be used to create
a network map of the connected devices. Devices connected to
neighboring devices can be discovered by using Telnet to connect to
the neighbors, and using the
show cdp neighbors command to discover
what devices are connected to those neighbors.
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Lab Activity
Lab Exercise: Creating a Network Map using CDP
In this lab, the students will use CDP commands to get
information about neighboring network devices .
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