i m working in ISP as network assistant. we have our wimax network and more then 150 clients. we run a range of 192.168.185.0/24 as DHCP for wimax clients. my question is that i want only one IP to be used for one client. but when any connects hub or

i m working in ISP as network assistant. we have our wimax network and more then 150 clients. we run a range of 192.168.185.0/24 as DHCP for wimax clients. my question is that i want only one IP to be used for one client. but when any connects hub or switch to his network he uses more IP's from 192.168.185.0/24 pool which creates a conflict with other clients. now i want to restrict the user to use only single IP address 192.168.185.0/24 pool to avoid conflict. can some body reply me as soon as possible. thanks.