Sun Microsystems concept of virtual enterprise networks as opposed to physical enterprise networks. Part of the Public Utility Computing ideas.

The supernet is a virtual enterprise network with the networking, file storage and such all provided by regular ISPs.

One of the nicest ideas is the elimination of remote access.

(http://www.upside.com)
(http://www.sun.com/research/features/puc/)

Some companies require a lot of IP addresses, but they were too late to get a class B IP address. By supernetting, you can combine several class C addresses into one fat virtual class B address.

InterNIC assigns eight class C addresses that have the same high-order bit, and the subnet mask is shortened to add hosts and reduce the network portion of the address.

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