เรียนรู้การใช้งาน network emulator เพื่อฝึกฝนการเป็น admin
I found a article in the Internet. It's amazing for me to know we can use some emulator for learning router configuration. This is better than using router simulator (netsim, ccna simulator), as it provides that you can use real IOS and run it on this emulator.
You can try it as follows,
Practice Cisco router configuration using a free emulator
http://blogs.techrepublic.com.com/networking/?p=419
