Tesis doctoral de Eusebi Calle Ortega
New network technology enables increasingly higher volumes of information to be carried. Various types of mission-critical, higher-priority traffic are now transported over these networks. In this scenario, when offering better quality of service, the consequences of a fault in a link or node become more pronounced. However, ip based networks still do not have the same degree of reliability offered by traditional telecommunication networks (for instance telephone networks). In our opinion, achieving such reliability will be crucial in the success or failure of a wide range of services that should eventually substitute current telecommunication networks. multiprotocol label switching (mpls) and the extended generalized mpls (gmpls) provide fast mechanisms for recovery from failures by establishing redundant label switch paths as backup paths. With these backups, traffic can always be redirected in case of failure. The main objective of this thesis is to improve some of the current mpls/gmpls fault recovery methods, in order to support the protection requirements of the new internet services. therefore, the definition and evaluation of the quality of protection provided by each fault recovery model is a main objective of this work. Some parameters, such as fault recovery time, packet loss or resource consumption, all within the scope of this quality of protection, are considered. Throughout this work, different analyses and experimental results supporting these decisions are presented. in this thesis a review and detailed comparison of the mpls fault recovery methods are presented. Path protection methods (global backups, reverse backups and 1+1 methods), as well as segment protection and local methods are included in this analysis. The fault recovery process is also analyzed, differentiating how path protection methods are created and managed in case of a failure. The extension of these mechanisms to optical networks using gmpls control
Datos académicos de la tesis doctoral «Enhanced fault management methods for protected traffic services in gmpls networks«
- Título de la tesis: Enhanced fault management methods for protected traffic services in gmpls networks
- Autor: Eusebi Calle Ortega
- Universidad: Girona
- Fecha de lectura de la tesis: 07/05/2004
Dirección y tribunal
- Director de la tesis
- Marzo Lazaro José Luis
- Tribunal
- Presidente del tribunal: jordi Domingo pascual
- m. Scoglio caterina (vocal)
- boleslaw Szimanski (vocal)
- xavier Masip bruin (vocal)