Yankee Group – Evolution of Virtual Private Networks
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Enterprise Computing & Networking White Paper— October 2002 by Zeus Kerrav ala Executive Summary For years enterprises have used Internet protocol virtual private networks (IP VPNs) to augment their corporate networks to connect remote users or branch of fices. In the year 2000 only about 20% of corporate traffic was carried by IP VPNs, but we expect that number to increase to 46% by 2006 (Exhibit 1). Much of the future growth of IP VPNs will come from e nterprises that extend the use of IP VPNs from augmenting their current network to replacing traditional access methods such as frame-relay and A TM services. There is currently a myriad of dif ferent types of equipment used to support customer premise based IP VPNs including routers, firewalls and VPN appliances and for companies that decide to build their own IP VPN infrastructure it is critical that they understand the strengths and weaknesses of each platform in order to make the right decision for their business. This report will provide an overv iew IP VPNs, describe the underlying business value behind a VPN infrastructure and provide a look into the infrastructure requirements needed to build a next generation network. Exhibit 1. Data Traffic Mix for North American Multinational Corporations Source: the Y ankee Group, 2002 0 20 40 60 80 100 52 50 47 43 38 31 10 10 10 10 9 9 15 14 14 13 12 11 3 3 3 3 3 3 20 23 26 31 38 46 IP VPN Other Private Networks PSTN/ISDN Frame/ATM 2006 2005 2004 2003 2002 2001 Copyright 2002, the Yankee Group The Evolution of Virtual Private Networks T H E G R O U P YANKEE T H E Y A N K E E G R O U P R E P O R T The Y ankee Group Report is published f or the sole use of Yankee Gr oup Planning Service subscribers. It may not be duplicated, reproduced, in whole or in part, or retran smitted witho ut the express permis sion of the Y ankee Gro up, 31 St. James A ve., Boston , MA 02116. Phone: (61 7) 956-500 0. Fax: (617) 956-50 05. The Y ankee Group can be reached by e-mail at: info@yan keegrou p.com. For more informatio n, contact the Ya nkee Group. All rights reserved. All opinions and estimates herein constitute our judgment as of this date an d are subject to change without notice.
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