Tesis doctoral de Fernando Solano Donado
Traffic engineering (te) deals with improving the performance of operational networks, usually considering quality of service (qos) requirements. Its main objective is to avoid hot spots, improve resource utilization and provide adequate qos for final users. These objectives can be achieved by setting up explicit routes through the physical network in such a way that the traffic distribution is balanced across several traffic trunks, giving the best possible service. however, few efforts have been focused on reducing network resources different to traffic-dependent resources . We focus on reducing two types of resources: states in mpls networks, and wavelengths in wavelength-switched multiplexing (wdm) networks. each time a connection is made in an mpls network, a soft state is created in every network node supporting this connection. Soft states store a label identifier needed to identify the flow in transit. Soft states are stored in memory and need often refreshing from network adjacent nodes. The reduction in the number of these soft states could relieve the refreshment processing overhead in every network caused by an excessive number of connections. The approach proposed for reducing soft states in mpls networks is named asymmetric merged tunneling (amt). Depending on how amts are placed, the number of network states can be reduced. different aspects are considered in the problem analysis. Initially, an np-completeness treatment of the problem is made in order to identify the decision problem involved. On the other hand, bounds for the optimal soft state reduction are estimated as well. Considering the decision problem, heuristics are proposed aiming at near-optimal values given by the computed bounds. as mentioned before, flows are identified by a label in mpls networks. Similarly, in wdm networks, a groom of flows can be identified by the wavelengths carrying them. The problem of reducing the number of wavelengths, while preserving traffic qos, have bee
Datos académicos de la tesis doctoral «Label space reduction in gmpls and all-optical label swapping networks«
- Título de la tesis: Label space reduction in gmpls and all-optical label swapping networks
- Autor: Fernando Solano Donado
- Universidad: Girona
- Fecha de lectura de la tesis: 04/12/2007
Dirección y tribunal
- Director de la tesis
- Marzo Lázaro José Luís
- Tribunal
- Presidente del tribunal: Josep Sole Pareta
- Didier Colle (vocal)
- Cavalcante De Oliveira Jaudelice (vocal)
- Juan García Haro (vocal)