I currently have a network of 10 NT Servers. Each server has 2 NIC's, 1 on a 172.17.x.x network for office connectivity and one on gigabit interfaces which sole function is to provide faster and more reliable connectivity between the servers, one of which is Oracle. The gigabit network will need at most 50 connections. This is a closed network with a simple gigabit switch linking the servers. I currently have this gigabit network setup as follows: address range should be between 10.10.10.1 and 10.10.10.50, I have currently have no DNS servers on this network, all addresses are static, all addresses are referenced in each server's host file, and my current IP Mask is set to 10.0.0.0. Is there a more efficient mask since I need only likely 25 addresses, 50 at most ever ? I may need to setup DNS on one of the servers and I assume that it'll be listening on both the 172 and 10 networks. Should I then list the DNS server statically, and register the 10.x addresses as well as the 172's. I aslo noticed on two machines (All of these are NT 2K Advanced), that internet connectivity was timing out most of the time on the 172 network, and after a route print, I saw that the first route in the list was 10.10.10.x network. I then executed a Route Delete and placed the 172 network as persistant and at the bigining of the list, but upon reboot, although the persistant route still shows as such, the 10.10.10.x route appears first, and Internet connectivity stalls once more. This is strange to me since only a couple of servers are experiencing this. Thoughts and suggestions are welcome. Basically, the 10.10.10.x closed network prevents Oracle from possibly losing data in any case that the 172 network or gateway goes down....