mrtg software package provides multi router traffic grapher, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install mrtg
mrtg is installed in your system.
Make ensure the mrtg package were installed using the commands given below,
$ sudo dpkg-query -l | grep mrtg *
You will get with mrtg package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Network |
| Package | mrtg |
| Version | 2.17.4-2ubuntu2 |
| Description | multi router traffic grapher |
| Sub Section | Net |