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The network devices being simulated are not real network devices, and are not capable of passing live network traffic the same way that a real network device could. What are Network Simulators?Ī simulator is a piece of software that, as the name implies, simulates a network topology composed of one or more network devices. Let's begin by diving into the first category of software - simulators. Our intent is to focus on the pros and cons of each particular software, leaving you to decide. We will not give a blanket recommendation as to which particular piece of software is 'best'. However, we will focus as much as possible on the certification exam use case.ĭisclaimer: We won't necessarily pick a winner. Many of these tools can also be used to test networking technologies for deployment in the real world. These are the most popular software for gaining hands-on Cisco lab experience for the routing and switching track certifications. Our analysis focuses on two simulators and three emulators: Let's take a step back and look at the software itself - and drop the horse race. 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. Editor’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.

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