Heterogeneous multi-agent architecture for ATM virtual path network resource configuration

Abstract

This paper illustrates a new approach to the problem of making a logical network resource configuration, adapt to customer utilisation. This is to be achieved through the use of distributed multi-agent based control techniques. The agents have goals derived from different quality metrics, which the network has to provide. In ATM networks a well designed Virtual Path Connection (VPC) overlay network tries to maximise the probability of being able to accommodate connection demand within the control plane for that particular time frame. We assume that there already exists a reasonable VPC route topology in operation. The distributed agent control architecture (Tele-MACS) describes how the coupling of planning agents with reactive agents can adapt the network resource configuration to comply with changes in user demand. The changes to the VPC route topology or capacity assignments are a requirement for the network to adapt to user behaviour and our control architecture demonstrates a mechanism for achieving the reconfigurations. The network scenario is considered a closed system, where the network operator has full control over the network elements, such as the routing tables and switching capabilities. We demonstrate our concepts with a focus on a core node ATM wide area network example, where the control system seeks to maintain network survivability and efficient use of bandwidth resources.