Toward an Intelligent Bandwidth Broker Model for Resources Management in DiffServ Networks

Rabih Nassrallah (1) , Marc Lemercier (1) , Dominique Gaïti (1)

1 ERA - Environnement de Réseaux Autonomes

DiffServ model is known to be the most used model to handle QoS over IP networks. Moreover this model has the advantage to be appropriate for use on large network contrary to the IntServ model that suffers from scalability problem. However, the DiffServ model has two major difficulties: routers’ configuration and resources’ allocation problems. In this paper, we introduce a new approach based on customers’ Service Level Agreements (SLA) declaration. The resource allocation is done by a federal entity called Bandwidth Broker implemented using Web-Services. Our proposal avoids the use of signaling protocol between the Bandwidth Broker and the core routers when establishing a new flow. Thus, core routers do not have the responsibility to store the customers’ traffics information and therefore, we respect the DiffServ model philosophy. Our tool provides the admission control and resource allocation management using overbooking techniques which guarantees the performances of priority traffics.

Domains: Networking and Internet Architecture [cs.NI]

Rabih Nassrallah, Marc Lemercier, Dominique Gaïti. Toward an Intelligent Bandwidth Broker Model for Resources Management in DiffServ Networks. IFIP TC6 / WG6.2, 6.6, 6.7 and 6.8 Third International Conference on Network Control and Engineering for QoS, Security and Mobility, NetCon 2004, Nov 2004, Palma de Mallorca, Spain. pp.265-276, ⟨10.1007/0-387-23198-6_20⟩. ⟨hal-02622878⟩