An advanced network simulator to design and configure virtual networks
Build, Design and Test your network in a risk-free virtual environment and access the largest networking community to help. Whether you are studying for your first networking exam or building out a state-wide telecommunications network, GNS3 offers an easy way to design and build networks of any size without the need for hardware.
Distributed Network emulation tool for high rate packet
...This project is based on the following projects and libraries:
LightweighIP of the TCP/IP stack
pthread
libpcap for communication with virtual machines
dynamips
Linux MicroCore