Installation

First you have to install Telnet and PyQt4 library with :

natjohan# yum install telnet pyqt4

Then, install GNS3, download the tgz archive from the official website :

natjohan# tar -xvzf GNS3-0.8.3.1-src.tar.gz
natjohan# cd GNS3-0.8.3.1-src/
natjohan# python2.7 setup.py build
natjohan# python2.7 setup.py install

To emulate Cisco devices, you need dynamips. You can install dynamips from source or from RPM-Sphere repository, so, at first, add RPM-Sphere repo provided by Huaren Zhong. Create /etc/yum.repos.d/rpm-sphere.repo file and add

[rpm-sphere]
name=RPM Sphere
baseurl=http://download.opensuse.org/repositories/home:/zhonghuaren/Fedora_18/
gpgkey=http://download.opensuse.org/repositories/home:/zhonghuaren/Fedora_18/repodata/repomd.xml.key
enabled=1
gpgcheck=1

Then install dynamips package :

natjohan# yum install dynamips

Usage

Now you can launch GNS3 from a user prompt and follow the start instructions !

natjohan$ gns3

Go Further

GNS documentation