Sorry, need clarification on what to use and enter if the Windows 2008 Server has only one IP address and runs IIS7 to host multiple web sites. Not sure if I use Class C network detection or something else. For sake of argument, say IP is 12.34.567.89. Doesn't seem like Class C is appropriate and entering only the first three octets.
From help: "This field is only visible if Class C network detection is selected above. Enter a class C network as IP base for the auto-discovery. Enter the first three octets of an IPv4 IP address, for example, 192.168.0".