The thrust of this study is to construct an MPLS test-bed using open hardware and software and later use this test-bed for experimenting with various traffic engineering options available with MPLS. We have constructed a test-bed using Pentium PCs and Linux and used this testbed to try a well-known MPLS traffic engineering feature of separating flows into multiple trunks. The purpose of this separation is to experimentally assess the quality of service benefits we can expect from MPLS networks.
Abstruct-Guaranteed levels of network resilience are essential for many emerging and future Internet services. Currently, the only network model that can support stringent resilience requirements is a provider-based overlay network. In such an environment, resilience can be implemented either in the overlay networks or in the physical network. In this paper we look at how the network provider revenue is affected by where resilience is implemented. The idea is to measure the revenue in the two implementation scenarios and compare the generated revenues to find out if the network provider has something to gain by implementing resilience in the physical network and if so under what circmstances. The results of our linear programming based experiments show that network providers can potentially double its revenue when resilience is implemented in the physical network. The customers benefit as well since the overlay networks are significantly less complex and can be built at the same or lower cost than when resilience is implemented in the overlay networks.
This paper identifies and corrects two flaws in the paper "Dynamic routing of restorable bandwidth-guaranteed tunnels using aggregate network resource usage information", Kodialam and Lakshman, IEEE/ACM Trans. Networking, 2003.
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