Sorry for the delay. Low end (29xx) and "mid-low" end switches (up to 3750 and 3560) are not designed for this kind of application. My suggestion is for you to mirror traffic to a fast PC and run something like NTOP. The main problem is the PC's spee...
Netflow is not supported on the smaller switches. The reason is that NetFlow is very demanding, and requires either a fast processor or dedicated silicon to the task. For instance, even on higher end switches there are some supervisors that do not su...