Networking

A Collaborative PCE-Based Mechanism for E2E Recovery Within MPLS-Networks

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Executive Summary

This paper suggests a new mechanism for inter domain recovery purpose within MPLS-based networks. This mechanism is based on efficient collaboration between several entities called PCE (Path Computation Element). The authors denote a PCE per domain. All PCEs should communicate in order to ensure propitious End-to-End failure handling, recovery and restoration. Based on normative instructions described in the and a novel approach presented in, known as the BRPC approach (Backward Recursive PCE-based Computation), the new mechanism offers an opportunity to achieve E2E recovery using up-to-date information and giving a way to maintain optimal network states as well in intra-domain scope as in inter domain scope, in order to generate a global visibility of the entire network without care about heterogeneity neither autonomy of crossed domains.

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