Ramon is a network monitoring agent, based on the proposed standard RFC-2021. To the authors' knowledge, it is the first open-source and free RMON2 MIB implementation available.
It is a software-based network monitoring agent, which captures (sniffs) packets from the network and accounts statistics as proposed in RFC-2021. It can only capture packets which crosses the network segment it is installed (its collision domain).
There isn't yet a released tarball, so fetch the sources from the CVS repository. The following CVS tags are available:
HEAD — contains the latest stable code rmon2_0_3_0_pre9 — branch for the 0.3.0 release, where work happens
You should use HEAD unless you want to help debugging.
Learn more about RMON2 :)
Our research group has published some papers about it: