Annual global IP traffic will pass two-thirds of a zettabyte in four years according the Cisco's Visual Networking Index report. The economic downturn has only slightly tempered traffic growth and the global IP traffic is expected to quintuple from 2008 to 2013. Cisco predicts IP traffic to grow at a compound annual growth rate (CAGR) of 40%.
From the report: "In 2013, the Internet will be nearly four times larger than it is in 2009. By year-end 2013, the equivalent of 10 billion DVDs will cross the Internet each month. Peer-to-peer (P2P) is growing in volume, but declining as a percentage of overall IP traffic. P2P file-sharing networks are now carrying 3.3 exabytes per month and will continue to grow at a moderate pace with a CAGR of 18 percent from 2008 to 2013. Other means of file sharing, such as one-click file hosting, will grow rapidly at a CAGR of 58 percent and will reach 3.2 exabytes per month in 2013. Despite this growth, P2P as a percentage of consumer Internet traffic will drop to 20 percent of consumer Internet traffic by 2013, down from 50 percent at the end of 2008."
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