Gmpls-based distribuited lightpath provisioning and protection schemes for metropolitan r-oadm dprings
- Autores: Raul Muñoz González
- Directores de la Tesis: Gabriel Junyent Giralt (dir. tes.)
- Lectura: En la Universitat Politècnica de Catalunya (UPC) ( España ) en 2005
- Idioma: inglés
- Tribunal Calificador de la Tesis: José Capmany (presid.), Jaume Comellas Colome (secret.), Josep Solé Pareta (voc.), Salvatore Spadaro (voc.), Javier Aracil Rico (voc.)
- Materias:
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- Resumen
The existing Metropolitan Area Networks (MANs), primarily made up of SONET/SDH technology, are quickly reaching its capability to grow with the fast-changing data-centric world. Built to reliably and efficiently transport voice traffic, the statically configured SONET (SDH) metro network is not optimized for demands of increased bandwidth and dynamic services, given the inherently bursty nature of Internet Protocol (IP). Most of current SONET (SDH) metropolitan area networks are based upon fiber-ring architectures, therefore it seems logical to plan for a migration to equivalent dynamic optical ring architectures based upon recent advances in optical networking technologies such as WDM, ROADMs, OXCs and tunable transceivers, capable of providing reconfigurable high-bandwidth end-to-end optical connections. The automation of all-optical networks can be achieved by means of a distributed optical control plane (i.e., routing and signaling), which can be based on the GMPLS protocol architecture.
However no GMPLS standard exists for R-OADM rings and most do not provide dynamic channel routing (add-drop) capabilities, relying instead upon proprietary static solutions. For example the provisioning of over metropolitan R-OADM DPrings using a distributed GMPLS-based control plane has not been considered in the existing literature. This work presents two experimental proposals of GMPLS-based signaling protocol for bidirectional lightpath provisioning based on RSVP-TE, named Whiting Reservation Protocol (WRP) and Salmon Reservation Protocol (SRP). First we evaluate SRP and WRP based on classical wavelength reservation protocols (i.e. FRP and BRP). SRP introduces a new concept of the label contention problem applied at wavelength sets. In this work we presents five strategies of label contention policies for wavelength sets.
