Welcome to LQ.
So how did you install GNS3-0.6 ? ?
The commands for the later version : same as 0.6 .
: QUOTE :
"GNS3 is a graphical network simulator
that allows simulation of complex networks."
I.e. not to be used in CLI. No CLI commands.
QUOTE : "For an installation from the sources, GNS3
requires the following dependencies to be installed:
Qt, Python, Sip, and PyQt.
Please see the README for more information."
The file README says Python 2.5, Qt 4.5.1, Sip 4.5, PyQt 4.5 :
Non of the above are available for CentOS 5.x .
Suggest : Use Fedora or wait for the Fedora 11 based CentOS 6.
(( Source : tar xvf GNS3-0.7-src.tar.bz2
cd GNS3-0.7-src/ && su .....
python setup.py install ))