I recently discovered Feedgnuplot. Feedgnuplot is basically a wrapper around Gnuplot, that makes Gnuplot able to plot data fed through a pipe in realtime.  Feedgnuplot is thus able to plot realtime performance counters from headless sytems like routers, firewalls and storage systems. In this short article I will give a few examples on how to use Feedgnuplot for various purposes.

Sure: There are a lot of graphing tools and network monitoring tools available for free. But for quick and dirty troubleshooting, feedgnuplot has quite some advantages, which I will get back to.