irsim software package provides switch-level simulator, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install irsim
irsim is installed in your system.
Make ensure the irsim package were installed using the commands given below,
$ sudo dpkg-query -l | grep irsim *
You will get with irsim package name, version, architecture and description in a table
| Distro | Ubuntu 12 04 lts precise pangolin |
| Section | Electronics |
| Package | irsim |
| Version | 9.7.74-1 |
| Description | switch-level simulator |
| Sub Section | Electronics |