Network Control and Engineering for QoS, Security and Mobility, V : IFIP 19th World Computer Congress,TC-6, 5th IFIP International Conference on Network Control and Engineering for QoS, Security, and Mobility, August 20-25, 2006, Santiago, Chile : Springer : 9781441941930 : 1441941932 : 23 Nov 2010 : The increasing demand for sophisticated network applications, allied to the growth of the Internet traffic, has lead to great efforts in the search of improvements in data transmission technologies with the intention of satisfying the increasing demand for bandwidth. So far as optical networking is concerned, WDM (Wavelength Division Multiplexing) appears as the main advance in the transmission area, because it allows transmission rates near to the theoretical limit of optical fibers, of the order of dozens of terabits a second [1]. An essential issue in optical network design is defining how the network will be controlled, that is, what type of signalling will be responsible for resource