Dynamic edge provisioning for core IP networks

Abstract

Effective edge capacity provisioning is an important architectural component of the emerging differentiated service Internet. We propose a set of dynamic provisioning algorithms, which are operational at the edge routers of a differentiated services core network. These edge mechanisms include: (i) ingress dynamic link sharing, which augments class based queueing techniques with bandwidth utility functions so that dynamic link sharing can be used to distribute bandwidth among traffic conditioners located at edge routers; and (ii) egress dynamic capacity dimensioning, which formulates bandwidth dimensioning at egress links to peering/transit networks taking into account measured core network traffic conditions. We demonstrate through analysis and simulation that the proposed edge provisioning architecture is efficient and effective at supporting user link sharing policies while taking into account the dynamics of traffic load measured in the core network.