Bandwidth adaptation for traffic flow in connectionless service over ATM networks

Increasing traffic on the Internet and intranets has raised demands for hig h-speed, large-scale and cost-effective computer networking techniques. ATM connectionless service provides high-speed, highly scalable, and flexible services because connectionless networks are constructed logically over hig h-speed ATM networks. This paper described the self-sizing operation for hi gh-speed, large-scale connectionless service over an ATM network. Self-sizi ng is an autonomous adjustment mechanism for virtual path (VP) bandwidths b ased on traffic conditions observed in real time. We confirmed its feasibil ity on a test-bed network. The self-sizing operation caused the VP bandwidt h to approach the necessary value while satisfying the target cell loss rat io (CLR). We developed an operations system (OpS) that achieves self-sizing in an ATM connectionless network. The OpS suggests necessary bandwidth for VP that may exceed the target CLR. The algorithm utilized in the OpS does not require observation or logical processes, which would be a heavy load o n each node. Self-sizing operation will provide easy and cost-effective man agement because it adjusts VP bandwidth flexibly depending on the current t raffic demand.