Bandwidthd is a bandwidth trending tool. See http://bandwidthd.sf.net
You can gain access to the bandwidthd management page by selecting
NSTWUI > Networking > Monitors > bandwidthd.
Choose an interface to monitor, and start the process.
bandwidthd will not start
If you see that bandwidthd will not stay up, you should check your /var/log/messages log for any warnings.
PeteHoffswell has seen that running bandwidthd in it's default network of 0.0.0.0 can lead to a
bandwidthd IP_NUM is too low, dropping ip... kernel: Out of memory: Killed process 9183 (bandwidthd)</div>
followed by memory overflows and the killing of the bandwidthd process.
To fix, simply define the local networks with the -s directive in the NST bandwidthd page.