Comprehensive comparison between routers and vswitch Simulators

At present, vrouters and vswitches are widely used. Here we mainly introduce the comprehensive comparison between vrouters and vswitches. Cisco certification has always been regarded as a gold icon in the IT industry. In foreign countries, Cisco Junior network engineer certification-CCNA is called "high-paying express trains ", IT can be seen that the amount of gold and the degree of recognition in the industry, and the subsequent tiered professional certificate-CCNP-> CCIE is to enter the IT industry to obtain a high salary guarantee, therefore, many young talents in China have invested in the Cisco certification army.

However, Cisco's professional certificate exams are completely different from traditional exams in China. In addition to self-adaptation, there are also many operation questions, that is, a simulated environment and configuration conditions, you are required to perform correct command line operations on the simulated interface, which is the biggest headache for many Chinese candidates, because for them, there are not many such real vrouters and vswitches in the operating environment, so the hands-on capability is much inferior. However, Cisco certification requires a high level of hands-on capability, this is also a trend of international vocational qualification certification, because the requirements for these certificates are: after passing the exam, it proves that you have a considerable level of technical skills and hands-on ability, not just theory. From this point, if you can get the certificate, you can do it directly at work without having to spend a long time learning.

Even so, how can we increase the hands-on abilities of candidates? You can't spend a lot of money to rent a lab. Although you are using real vrouters and vswitches, after all, the funding problem is not so well solved, several foreign companies have come up with the "Simulator" approach.

The so-called simulator is to use software to create a virtual experiment environment, which includes the router and switch connection methods required for the experiment. Click to enter the relevant device to perform the operation, although the simulator is expensive, it is installed on a computer, so you don't have to worry about wasting time on the lab. Secondly, it can continue to play a role in the future, you can learn any knowledge that exceeds the scope of the teaching material as long as the simulator can support it, so that you can feel the value for money.

As a person who came through, Mr. berwolf told me a little bit about experience. In fact, the simulator that Mr. berwolf came into contact with, or there were only five kinds of simulators, respectively: routerSim4.0, Sybex Virtual Lab, Cisco Network college Flah Lab, CIM, Boson Netsim5.31.

There are five choices, but you cannot use them all. If you have money, I have nothing to say ......, The following is a rough comparison of the interfaces, experiment environments, total number of supported commands, total number of supported devices, and the scalability of the experiment topology of these five simulators :)