Abstract :
IT´S AN OLD story with a new twist. The big fret among users was once the idea that the Internet would run out of bandwidth before the end of the 2000s, or that its IP address space was soon to be exhausted. Not every techno-prophet subscribed to these notions, but most agreed that the somewhat haphazard fashion in which the Internet was built-out in the 1990s and 2000s did not take account of the traffic demands that it faces in the 2010s.