Date Added: Aug 2011
Current practices for managing resources in fixed networks rely on off-line approaches, which can be sub-optimal in the face of changing or unpredicted traffic demand. To cope with the limitations of these off-line configurations new Traffic Engineering (TE) schemes that can adapt to network and traffic dynamics are required. In this paper, the authors propose an intra-domain dynamic TE system for IP networks. Their approach uses multi-topology routing as the underlying routing protocol to provide path diversity and supports adaptive resource management operations that dynamically adjust the volume of traffic sent across each topology. Re-configuration actions are performed in a coordinated fashion based on an in-network overlay of network entities without relying on a centralized management system.