We want to track available bandwidth, maximum rates and other network statistics, and display the results graphically. Where can I find software to determine available bandwidth between pairs of intranet and Internet network links?
The Cooperative Association for Internet Data Analysis (CAIDA) provides links to a number of commercial and open source software tools for monitoring, measuring and visualizing network performance information.
If you are polling from a large number of SNMP devices, take a look at the Real Traffic Grabber.
To measure performance statistics between endpoints from one end, you could use pchar.
If you can run probes with root privilege from a Linux system on one end, Sprobe offers an interesting alternative. If you control both endpoints, pathrate and pathload can be used to measure the capacity and load across Internet paths. Viznet is a stand-alone Java application that can be used to monitor a connection or to post process a log file. GTrace is a graphical version of traceroute.
CAIDA also provides links to a number of visualization and mapping tools such as GeoPlot, MapNet and Otter.
