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Cisco Modeling Labs (CML) - Cisco's Network Simulator ($200/yr).Press (on the smartphone) button with this pin code Wait a few seconds, everything else will happen automatically. Today I was using Boson Netsim 11 to do an OSPF lab from Paul Brownings 101 Labs for The Cisco CCNA Exam and I ran into somethig a. In the opened window (on the smartphone), select the pin code that you see (-). In the longer term, GNS3 is more complex but also has a lot of flexibility and is multivendor. There are some limitations but it will get you going on the certification process.
In the short term, Packet Tracer is fine for ICND1 and ICND2, you get up and running quickly and it's free. EVE-NG - Another network simulator (FREE & Paid Options) Use your mobile phone (smartphone) to scan the QR code that you see here. Have a short term and long term strategy.GNS3 - The network simulator that every network person should have *FREE.Free Packet Tracer Download - *FREE WITH SIGNUP.Networking Fundamentals - Learn the very core of Networking.Cisco's Learning Network - Look here no matter what you do.