On Designing the Overlay Topology of ROMCA (Resilient Overlay for Mission Critical Applications)

Inadequate end-to-end Quality of Service (QoS) and resilience support still exists across the Internet as it is difficult to achieve cooperation between the Autonomous Systems (AS) that are operated independently by Internet Service Providers (ISP). The use of an Overlay Network (ON) deployed on top of the Internet is viewed as one of the effective strategies to provide some measure of service quality and requires little change to the existing operations of the wide-area Internet. An overlay network can be implemented with or without the network provider involvement. Currently, most research addresses network provider-dependent ONs. In this paper, we focus on analyzing and formulating the topological design problem in the context of a network-provider-independent overlay architecture named ROMCA (Resilient Overlay for Mission Critical Applications) based on previous work. Simulation results show that the overlay topology constructed exploiting underlying Internet path information can achieve good performance while maintaining low overhead.