[GNS3]

1. explain

- Graphical Network Simulator-3

- Real-time network simulation without network hardware

- run & test multiple network hardware vendors(ex : cisco)


2. Install


2.1 Download(URL : https://www.gns3.com)


2.2 create Account -> login(If you already have an account, click "Login".) 

2.3 setup

2.4 start GNS3

end.