That's exactly what we're going to look at. Objectively, each piece of software has its own set of advantages and disadvantages. That doesn't make the decision any easier. Similarly, there are camps staked out on the simulator side, too. Someone who primarily uses GNS3 will always claim that it's superior to VIRL, and vice-versa.
Whether you've been advised by a coworker, supervisor, or a thread on Reddit, everyone has their favorite simulator or emulator. So, you'll probably rely on recommendations - and everyone has an opinion. Realistically, it's not feasible to test each program individually. (Yes, despite the title, we'll cover both.) And there's no best way to go about making your selection. When studying for the CCNA, CCNP, or CCIE, choosing the right network simulator or emulator can be a tough decision. J| career | career progression - Christopher Hart 5 Best Network Simulators for Cisco Exams: CCNA, CCNP, CCIEĮditor’s note: On April 8, 2020, Cisco announced that VIRL is being renamed Cisco Modeling Labs – Personal (CML-Personal) - and that the latest version will be released on May 12, 2020.