A Multi-layer Disjoint Path Selection Algorithm for Highly Reliable Backbone Service

摘要

In this paper, we consider a mechanism for providing path protection in multi-region networks. Here a region includes an IGP area, an AS and a layer network. Many path protection schemes have been proposed, but most of them were focused on a protection mechanism within a region network. We thus propose a mechanism for providing inter-region protection, which is used for highly reliable carrier services. We also point out inter-region protection schemes are remarkably effective to improve end-to-end reliablity.