NISCA (Network Interface Statistics Collection Agent) is a more flexible PHP4-based MRTG replacement. It supports both SNMP and reading localhost's /proc/net/dev device file directly for statistics gathering. It uses MySQL to store collected data in, and stores statistics for bytes transferred, packets transferred, transfer errors, and dropped packets separated into a per interface incoming and outgoing set. It generates both graphs and a textual report table using the data from any timeframe contained in the database. The entire package runs using PHP4; it uses the CGI binary version of PHP for stats collection (running in the background as a "daemon") and either the CGI or Apache module versions to generate the GUI form and reports. It can also import existing MRTG logfiles.
