Conference Paper

A new recovery scheme with reverse shared risk link group in GMPLS-based WDM networks

DOI: 10.1007/978-3-540-24707-4_121 Conference: Computational Science and Its Applications - ICCSA 2004, International Conference, Assisi, Italy, May 14-17, 2004, Proceedings, Part I
Source: DBLP


In this study, we present a eccentric end-to-end path selection and recovery scheme that guarantees fast and efficient recovery
of individual and groomed paths in Generalized Multiprotocol Label Switching (GMPLS) based Wavelength Division Multiplexing
(WDM) networks. To this, we propose a novel allocation and restoration strategy called ”Reverse Shared Risk Link Group (RSRLG)”
and demonstrate how this concept can be applied to minimize network reconfiguration in GMPLS networks and to minimize network
recovery time. It is found that only a additional open shortest path first-traffic engineering (OSPF-TE) message is needed
to support the RSRLG scheme and a very fast restorability can be accomplished for a single failure. This paper also has developed
an analytical model and performed analysis for the proposed scheme in terms of two performance factors: mean number of recovery
requests in the system and recovery blocking probability.

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