A very high performance backbone network service. An Internet2 backbone network.
The vBNS (very high speed Backbone Network Service) is a network that interconnects a number of supercomputer center in the United States and is reserved for science applications requiring the massive computing that supercomputers can provide.
very-high-speed backbone network service. a spine or backbone that allows very-high-speed interaction for the next-generation Internet. (p. 63)