Communication Protocol for Interdomain Resource Reservation

Abstract

The Resource Management Architecture is a Quality of Service (QoS) architecture running on top of the IP-layer that can be used together with service architectures like H.323 or SIP. It provides hard and soft QoS guarantees for real-time traffic in the context of enterprise networks. Resource-Managers (RMs) are special servers of the Resource Management Architecture, responsible for the management of the network resources. They operate on particular domains, named RM domains. In order to provide QoS guarantees, the RMs perform resource reservation on a per call basis, which requires an interdomain coordination for calls running over several domain. We propose in this paper a communication protocol to be used between the RMs allowing the resource reservation for multidomain calls. We give some concrete implementation details on a primary version of the RM-RM communication protocol, as well as a set of improvements meant to reduce the call setup delay for multidomain calls.