Adaptive routing based on summary information mitigates the adverse impact of outdated control messages
2011 (English)In: Transparent Optical Networks (ICTON), 2011 13th International Conference on, Stockholm, 2011, 1-4 p.Conference paper (Refereed)
Adaptive routing is considered as a promising solution to support flexible resource allocation in wavelength division multiplexing network. Resource advertisement protocols, such as link state advertisement (LSA), are essential to enable routing algorithms to efficiently carry out the required path computation. The LSA nonnegligible convergence time may lead to outdated link information, which in turns may adversely affect the efficiency of the computed path. As a result, traffic engineering is suboptimal and some services may be unnecessarily blocked. This study investigates the impact of outdated information on the blocking probability of adaptive routing schemes focusing on two LSA protocols: one advertising specific resource information and one advertising only a summary of the same. Our simulation results show that compared with the routing scheme requiring specific information LSA, the approach based on LSA with summary information is by its nature not precise and hence able to mitigate the adverse impact of the LSA convergence time on blocking performance.
Place, publisher, year, edition, pages
Stockholm, 2011. 1-4 p.
, 2011 13th International Conference on Transparent Optical Networks, ICTON 2011, ISSN 2161-2056
adaptive routing, information summary, link state advertisement LSA, outdated control information, AS-links, Blocking performance, Control messages, Convergence time, Link State Advertisement, Outdated information, Path computation, Resource information, Routing scheme, Simulation result, Specific information, Traffic Engineering, Wavelength division multiplexing networks, Blocking probability, Computational efficiency, Fiber optic networks, Marketing, Multiplexing, Multiplexing equipment, Routers, Routing protocols, Transparent optical networks, Adaptive control systems
IdentifiersURN: urn:nbn:se:kth:diva-52734DOI: 10.1109/ICTON.2011.5970929ISI: 000297859300166ScopusID: 2-s2.0-80155131620ISBN: 978-145770880-0OAI: oai:DiVA.org:kth-52734DiVA: diva2:467577
International Conference on Transparent Optical Networks, 26-30 June 2011
FunderICT - The Next Generation
QC 201112192011-12-192011-12-192012-04-04Bibliographically approved