As far I know, should Windows 2000 Server support the DSCP/DiffServ tags in IP packets. well the tagged packets should be routeted over a wan link which is attached to a windows 2000 server. but the windows server doesn't care about the dscp flags tagged on the packets. equal if best-effort or expidited-forward, no prioritization is given by the 2000 server. so what am I have to do, that the server will consider the tagged packets? thanks, wean