ATM virtual private networks for the Internet data traffic.pdfVIP

ATM Virtual Private Networks for the Internet Data Trac Carlos M D Pazos and Mario Gerla UCLA Computer Science Department Hilgard Ave Los Angeles CA USA Phone Fax fp azosgerlag csuclaedu Abstract The ecient utilization and management of bandwidth in broadband net works is of paramount imp ortance since bandwidth costs are likely to domi nate network op erational costs esp ecially in the wide area scenario However relatively little attention has b een given to this issue in developing the current schemes for the transp ort of Internet data trac over ATM In this pap er we describ e a bandwidth allo cation and management approach for the transp ort of Internet trac over ATM that uses Virtual Private Networks exploits the ABR service and implements bandwidth guarantees We also address the ef cient sharing of bandwidth b etween Internet data trac and other media trac using ATM Keywords Multimedia networks bandwidth management Internet over ATM INTR ODUCTION We all have noticed the unprecedented growth of the Internet over the last few years esp ecially after the World Wide Web b ecame so widely p opular As a result there is an ever increasing volume of data trac injected into the Internet which is continuously pushing the installed capacity of the Internet to its limits This installed capacity must b e upgraded regularly if the Internet is to continue providing the users with acceptable quality service In order to meet such growing capacity demands the use of Asynchronous Transfer Mo de ATM technology is currently considered since ATM can de liver high bandwidth and it is b ecoming a ubiquitous infrastructure widely accepted by the public carrier companies In fact A