Title :
Design of fault-tolerant logical topologies in wavelength-routed optical IP networks
Author :
Nucci, A. ; Sans?², B. ; Crainic, T.G. ; Leonardi, E. ; Marsan, M. Ajmone
Author_Institution :
Dipt. di Elettronica, Politecnico di Torino, Italy
fDate :
6/23/1905 12:00:00 AM
Abstract :
In this paper we illustrate a new methodology for the design of fault-tolerant logical topologies in wavelength-routed optical networks exploiting wavelength division multiplexing, and supporting both unicast and multicast IP datagram flows. Our approach to protection and restoration generalizes the "design protection" concepts, and relies on the dynamic capabilities of IP routing to re-route IP datagrams when faults occur, thus leading to high-performance cost-effective fault-tolerant logical topologies. Our design methodology for the first time considers the resilience properties or the topology during the logical topology optimization process, thus extending the optimization of the network resilience performance also on the space of the logical topologies. Numerical results clearly show that our approach is able to obtain very good logical topologies with limited complexity
Keywords :
fault tolerance; multicast communication; network topology; optical fibre networks; optimisation; telecommunication network reliability; telecommunication network routing; wavelength division multiplexing; IP networks; IP routing; WDM; design methodology; design protection concepts; fault-tolerant logical topologies; logical topology optimization process; multicast datagram flows; network resilience performance; survivable network; unicast datagram flows; wavelength division multiplexing; wavelength-routed optical networks; Design methodology; Design optimization; Fault tolerance; Network topology; Optical design; Optical fiber networks; Protection; Resilience; Unicast; Wavelength division multiplexing;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.966151