Traffic matrix estimation: existing techniques and new directions
Proceedings of the 2002 conference on Applications, technologies, architectures, and protocols for computer communications
Analysis of link failures in an IP backbone
Proceedings of the 2nd ACM SIGCOMM Workshop on Internet measurment
Characterization of failures in an operational IP backbone network
IEEE/ACM Transactions on Networking (TON)
Resilience analysis of packet-witched communication networks
IEEE/ACM Transactions on Networking (TON)
Endurance: A new robustness measure for complex networks under multiple failure scenarios
Computer Networks: The International Journal of Computer and Telecommunications Networking
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Numerous approaches have been proposed to manage Quality of Service in the Internet. However, none of them was successfully deployed in a commercial IP backbone, mostly because of their complexity. In this paper, we take advantage of the excess network bandwidth to offer a degraded class of traffic. We identify and analyze the impact of link failures on such a service and show that under certain circumstances they provide the main vector to service differentiation. We simulate our QoS scheme on a real IP backbone topology and derive Service Level Agreements for the new degraded service. We find that by adding a degraded class of traffic in the network, we can at least double the link utilization with no impact on the current backbone traffic.