We are expanding the internet access to the entire school body and we will need 800+ ip addresses to accommodate them all. the existing DHCP range is 192.168.1.0 with a Mask of 255.255.255.0 the default Gateway is at 192.168.1.254. if i open the mask to 255.255.248.0 it moves it to a class B network, so does that mean i have to change my existing ip address range from 192.168.x.x to a class B range? If i set the range from 192.168.1.0 to 192.168.7.255 using subnet mask of 255.255.248.0 I will have to move the Default Gateway from 192.168.1.254 to something outside the range. i tried to start the rang at 192.168.2.1 to keep the DFGW at 192.168.1.254 but i get an error saying the gateway is not on the correct subnet? Is there a better way to do this?