MRTG: Monitors Traffic Loads

Multi Router Traffic Grapher (MRTG) is an open-source application that graphs statistics available through SNMP (Simple Network Management Protocol). SNMP information is available on all high-end routers and switches, as well as on some other networked equipment, such as printers and wireless access points. You can use the net-snmp and net-snmp-utils packages supplied by Red Hat to install SNMP on a system. You also need to install the mrtg package.

Once MRTG and SNMP are installed and running, you can view the reports at http://server/mrtg, where server is the FQDN of the server. For more information see the mrtg man page and the sites listed under "More Information" on page 787.