What can GNS3 and Packet Tracer be used for besides simulations?

I am new to GNS3 and Cisco's Packet Tracer. Besides using GNS3 to simulate complex networks, practice using it for the CCNA exam, and using Dynamips emulation software to simulate Cisco IOS, how is it used in the real world by big companies and corporations? Thanks.

Solution

It can also be used for documentation of the networks topology,Top Level Structure, IP address distribution and much more.

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