untuk praktek ccna dgn simulator,selain dgn dynamips atau packet tracer,kita juga bisa praktek dgn routersim ini.Walaupun tidak semua command di ios di support,tapi lumayanlah untuk belajar dasar2 cisco dan praktek lab untuk sertifikasi ccna.
untuk lebih jelasnya bisa diikuti keterangasn berikut :

RouterSim’s CCNA Network Visualizer 6.0 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 thatoffers 500 supported commands and over 190 labs, you are empowered to build, test and preview a large variety of networks!
CCNA Network Visualizer 6.0 is ideal for:
- Anyone studying for the Cisco CCNA 640-802 exam.
- Deployment over a LAN network.
- Distance education and deployment on a Citrix server or Microsoft
Terminal Services.
- Corporate trainers and employees.
- Students at colleges, universities, and technical institutes.

Program Features:
- Added the 2811 router with four serial interfaces.
- Added the 2960 switch.
- Added the 3560 switch.
- Added practice scenarios based on Cisco 640-802 test objectives that can be graded with our Net Assessment software engine.
- Added IPv6 labs.
- Added labs on the SDM.
- Added labs on the SSH.
- Revamped labs that include more educational material.
- Added the option of using RouterSim or Cisco devices in creating and
viewing networks.
Custom Labs, create and share your labs with others via the Network
Visualizer menu. This is ideal for instructors.Net Assessment for instructors and all other users. Test and evaluate your problem solving and troubleshooting skills.
Net Packet Monitor, you can view a packet real time as it travels
through your network.
You can Download ini here,. DOWNLOAD Network Visualizer 6.0

Tags: Cisco Simulator