Hi,
Abing is a tool using the packet pairs dispersion technique to estimate
the available Bandwidth/bitrate (unused capacity) for a path in the network.
See details in _README file in subdirectories.

Currently, there are 3  versions vers. 2.2.0 vers.2.1.4 and older vers. 1.1.1.

The difference between both versions is in port allocation concepts. 
Version abing_1.1.1 contains options with independent sending and receiving
ports. Version 2.1.4 respects reflective ports rules.
From user point of view the both versions are NOT COMPATIBLE. (It means that 
you cannot use different versions of client and server.)
The latest version 2.2.0 is simmilar to 2.1.4 it collects more variables (RTT)
and it has sluightly different output format

However, all versions are using same algorithms for bandwidth estimations 
and so they give same estimation results. 

Monitoring with Abing is run via scripts called ABWS. 
Scripts creates all results in /tmp dir and making all the graphs 
published in http://www-iepm.slac.stanford.edu/abing

Just download ABWS and you can start monitoring for your sites in 15 minutes
(ABWS.tar.gz contains also abing)
 
*JN*