A Unified Framework for Simulating Markovian Models of Highly Dependable Systems
IEEE Transactions on Computers
Fast simulation of wavelength continuous WDM networks
IEEE/ACM Transactions on Networking (TON)
Theory, Volume 1, Queueing Systems
Theory, Volume 1, Queueing Systems
Availability aware cost modeling of mesh architectures for long-haul networks
ISCC '04 Proceedings of the Ninth International Symposium on Computers and Communications 2004 Volume 2 (ISCC"04) - Volume 02
Availability analysis and simulation of mesh restoration networks
ISCC '04 Proceedings of the Ninth International Symposium on Computers and Communications 2004 Volume 2 (ISCC"04) - Volume 02
IEEE/ACM Transactions on Networking (TON)
Simulation of rare events in communications networks
IEEE Communications Magazine
Issues for routing in the optical layer
IEEE Communications Magazine
IEEE Journal on Selected Areas in Communications - Part Supplement
IEEE Journal on Selected Areas in Communications - Part Supplement
Packet-level traffic measurements from the Sprint IP backbone
IEEE Network: The Magazine of Global Internetworking
Failure protection in layered networks with shared risk link groups
IEEE Network: The Magazine of Global Internetworking
Routing Metrics and Protocols for Wireless Mesh Networks
IEEE Network: The Magazine of Global Internetworking
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A fast simulation technique based on importance sampling is developed for the analysis of path service availability in mesh networks with dynamic path restoration. The method combines the simulation of the path rerouting algorithm with a "dynamic path failure importance sampling" (DPFS) scheme to estimate path availabilities efficiently. In DPFS, the failure rates of network elements are biased at increased rates until path failures are observed under rerouting. The simulated model uses "failure equivalence groups," with finite/infinite sources of failure events and finite/infinite pools of repair personnel, to facilitate the modeling of bidirectional link failures, multiple in-series link cuts, optical amplifier failures along links, node failures, and more general geographically distributed failure scenarios. The analysis of a large mesh network example demonstrates the practicality of the technique.