Performance evaluation of hose bandwidth allocation method using feedback control and class-based queueing for VPNs

Abstract

A strong demand for quality of service (QoS) to subscribers of VPNs has emerged. Weighted proportional fair rate allocation (WPFRA) provides a QoS method for one VPN model, the customer-pipe model. However, constructing large-scale VPNs with the customer-pipe model is difficult because of an exponential increase in required bandwidth. In future VPNs, a new model, the hose model, is useful to improve the scalability. We present an adaptive bandwidth allocation method for providing QoS in the hose model. Our method is evaluated quantitatively through simulations.