Multi-layer survivability: routing schemes for GMPLS-based networks

• Autores: Anna Urra Fàbregas
• Directores de la Tesis: Josep Lluís Marzo i Lázaro (dir. tes.), Eusebi Calle Ortega (dir. tes.)
• Lectura: En la Universitat de Girona ( España ) en 2007
• Idioma: inglés
• ISBN: 978-84-690-4373-8
• Depósito Legal: Gi-283-2007
• Tribunal Calificador de la Tesis: Jordi Domingo i Pascual (presid.), Pere Vila Tudela (secret.), Tricha Anjali (voc.), Xavier Masip Bruin (voc.), A. Schupke Dominic (voc.)
• Materias:
  • Ciencias tecnológicas
• Enlaces
  • Tesis en acceso abierto en: TDX
• Resumen
  • English

    The use of optical technology in core networks combined with IP/Multi-Protocol Label Switching (MPLS) solution has been presented as a suitable choice for the next generation Internet architecture. The integration of both layers is facilitated by the development of Generalized MPLS (GMPLS). In this network architecture, a single fibre failure can result in potentially huge data losses as the effects propagate up and through the network causing disruptions in the service of many applications. This research provides and evaluates new QoSP routing schemes that consider both IP/MPLS and optical network layers to compute the paths and backup paths subject to the QoS requirements of the traffic. Although effort has been devoted in developing multi-layer routing algorithms that consider all switching layers, protection is not considered amongst them. This is considered in this thesis. Where electrical to optical signal conversions have been reduded as well as the avoidance of traffic duplications resulting in better use of the network resources.

  • English

    En les xarxes IP/MPLS sobre WDM on es transporta gran quantitat dinformacio, la capacitat de garantir que el trafic arriba al node de desti ha esdevingut un problema important, ja que la fallada dun element de la xarxa pot resultar en una gran quantitat dinformacio perduda. Per garantir que el trafic afectat per una fallada arribi al node desti, shan definit nous algoritmes dencaminament que incorporen el coneixement de la proteccio en els dues capes: loptica (WDM) i la basada en paquets (IP/MPLS). Daquesta manera sevita reservar recursos per protegir el trafic a les dues capes. Els nous algoritmes resulten en millor us dels recursos de la xarxa, ofereixen rapid temps de recuperacio, eviten la duplicacio de recursos i disminueixen el numero de conversions del trafic de senyal optica a electrica.