I'm looking for a windows command line utility (it should be command line based because I want to call it from another application) that can control network bandwidth(I mean the download and upload speed)
Windows Command Line – Control Network Bandwidth
bandwidthcommand linetraffic-shaping
Related Solutions
If your router doesn't support traffic shaping, you can install this on each computer:
Traffic Shaper XP is a free bandwidth limiter for Windows 2000, XP and 2003 Server. It combines high performance traffic shaping with the ease of use and flexibility to keep your network free of congestion.
Use iptraf - http://www.linuxcommand.org/man_pages/iptraf8.html
It's an ncurses based commandline utility which is able to give you statistics on all interfaces on the machine - including bandwidth usage.
Best Answer
Netlimiter can control the bandwidth and has an API which I think you could call from a command line script, see: http://netlimiter.com/devzone.php