Abstract: An apparatus and method to dynamically discover and visually map computer networks comprising plurality of devices, physically and logically, is disclosed. The apparatus comprises a server including a processor and memory. The server is configured to implement a connection-oriented network protocol to issue command line interface (CLI) commands for more efficient and reliable data collection of a plurality of networked devices of a network. The server is further configured to extract information via a parser from a command output retrieved in response to the issued command. The server is further configured to store the extracted information in a database for retrieval. Then the stored information is utilized to create network topology map including a physical topology map, a virtual physical topology map and a virtual logical topology map.