Dynamic Core Provisioning for Quantitative Differentiated Service

— Efficient network provisioning mechanisms that support service differentiation and automatic capacity dimensioning are essential to the realization of the Differentiated Services (DiffServ) Internet. Building on our prior work on edge provisioning, we propose a set of efficient dynamic node and core provisioning algorithms for interior nodes and core networks, respectively. The node provisioning algorithm prevents transient violations of service level agreements by predicting the onset of service level violations based on a multi-class virtual queue measurement technique, and by automatically adjusting the service weights of weighted fair queueing schedulers at core routers. Persistent service level violations are reported to the core provisioning algorithm, which dimensions traffic aggregates at the network ingress edge. The core provisioning algorithm is designed to address the difficult problem of provisioning DiffServ traffic aggregates (i.e., rate-control can only be exer...

• Type: Conference
• Year: 2001
• Where: IWQOS
• Authors: Raymond R.-F. Liao, Andrew T. Campbell
• Keywords: Communications, Core Provisioning Algorithm, IWQOS 2001, Provisioning, Service Level Violations