One, can be downloaded from www.gns3.com This website, can run in Windows, Linux, MacOS, is learning Cisco routers and switches a powerful simulation tool. The download good name is:
Gns3-1.4.0-all-in-one.exe
First double-click to install,
Here is a brief description of the series of options in the installation dialog box:
WinPCAP: This is a foundation for GNS3 to run and grab a bag, so this is a must-have check;
Wireshark:gns3 default use of the Capture tool, it is not integrated in the GNS3 installation package, when installed, the program will automatically on the Wireshark site download, if installed, do not tick, but also save time;
"SolarWinds: This is a network management tool, that is, an advertisement, you can not check the installation, if the latter is useful to be able to download and install;
"Dynamips: It is a hardware basis for simulating GNS3;
QEMU: This is in the SA Firewall, IPS Road detection equipment used in conjunction with;
"VPCS: This is a Virtual PC machine;
"CPULimit: Firewall, IPS road detection equipment used to control the CPU of a thing;
"GNS3: This is the main program;
"Puty: This is the terminal used to connect the device.
Then click Next to start the installation on the line.
Second, use
GNS3 actually just simulates the hardware part, and it doesn't simulate the software part. So we also have to prepare the software section. This is called in Cisco Internet Operating system, abbreviation IOS. We're using c3660-ik9o3s-mz.124-25d.bin here.
Learning Summary of GNS3 Simulator