The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.
One of a set of tools we're offering as a way of saying thank you for being a part of the community.
2) otherwise use Application Assembly Tool (AAT) which ships and installs with WAS. NOTE: WAS 5.1 uses "Assembly Toolkit" which is really just a dumbed down version of WebSphere Studio.