Our office network has been experiencing some congestion lately because of the downloads of large files. Can anyone recommend an effective (although not extremely expensive) traffic shaper that could help us regulate some of these downloads? We don't mind if employees use our bandwidth (much of the use is wireless so they're using personal and office computers at times), but we need to keep it from affecting normal business functions when usage is high. There are about 80-100 people working in the office at a time.