
Global IP traffic will increase at a combined annual growth rate (CAGR) of 46 percent from 2007 to 2012, nearly doubling every two years. This will result in an annual bandwidth demand on the world's IP networks of approximately 522 exabytes, or more than half a zettabyte, according to a newly published "Visual Networking Index (VNI) Forecast" friom Cisco. A zettabyte is equal to 1 trillion gigabytes, or 1,000 exabytes, which corresponds to 250...