Banjar support both upload and download bandwidth now. No bandwidth wasted anymore :)
I also add priority support when adding or editing clients. Priority is a level that tells the traffic control to prioritize particular clients to get early left-over bandwidth. Level 0 for the lowest priority clients, 5 for the highest ( pay more ? ) and 2 is the default, normal.
Another interesting stuff I add is contribs folder on docs, that folder contains cacti templates and scripts needed to add banjar support on cacti. Tested on cacti 0.8.7a. Now you can monitor, view upload and download usage graphics on each client !
Im happy, now I can go to bed yey !