Dynamically Adaptive Mulitipoint to Point LSPs

Multi-Protocol Label Switching provides a flexible forwarding mechanism within communication networks. Since its inception at the end of the last century it has been recognised that multipoint-to-point label switched paths offer a valuable way of further simplifying the forwarding process particularly within IP networks. Whilst work has been carried out into schemes for the formulation of such multipoint-to-point LSPs, only a couple of schemes have been proposed. Furthermore resilience in such configurations has only been partially addressed. This paper describes an improved method for the formulation of multipoint-to-point LSPs. In addition, the new notion of Dynamically Adaptive Mulitipoint to Point LSPs is presented in order to address the issue of resilience.