From RouterSim: RouterSim's CCNA Network Visualizer 8.0 is a CCNA router and network simulator that offers more features and flexibility than any product on the market. You can design, build and configure your own network. With a program that offers 500 supported commands and over 170 labs, you are empowered to build, test and preview a large variety of networks. Your network topology can display RouterSim or Cisco devices in creating/viewing networks. Self-contained, Individual labs that can be graded with our Net Assessment software engine. Create and share your labs with others via the Network Visualizer menu. This is ideal for instructors. Test and evaluate your problem solving and troubleshooting skills. You can view a packet real time as it travels through your network, along with active protocols.
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