Comment Re:OPNET (Score 1) 138
Actually OPNET is available on Linux as well. Its officially supported on redhat, but you can get it running on other distros. The OPNET version for teaching use is called IT Guru Academic Edition.
http://www.opnet.com/solutions/system_requirements/itguru_networkplanner/
http://www.opnet.com/university_program/itguru_academic_edition/
http://www.opnet.com/solutions/system_requirements/itguru_networkplanner/
http://www.opnet.com/university_program/itguru_academic_edition/