Forum Moderators: phranque
If the traffic stays within the datacenter, I cannot understand why the host would not provide a 100mbps connection.
If the machines are right next to each other, ask for a crossover cable between them. Then you can use private addresses in the range 192.168.nnn.nnn to communicate. This presumes that these are not cheapo white boxes that only have one nic. (The nnn was exexex until the nanny filter here turned it into #*$!).
The side benefit is that this takes the database server right off the public network. It is only reachable through a connection from the web server.