Title :
Enhancing Bandwidth on Demand Service Based on Virtual Network Topology Control
Author :
Miyamura, Takashi ; Oki, Eiji ; Inoue, Ichiro ; Shiomoto, Kohei
Author_Institution :
NTT Network Service Syst. Labs., NTT Corp., Tokyo
Abstract :
This paper presents multilayer IP optical traffic engineering technologies based on VNT (virtual network topology) control and studies their application to BoD (bandwidth on demand) services to improve flexibility and efficiency. Multilayer TE (traffic engineering) optimizes network-resource utilization considering all layers, rather than performing optimization independently for each layer, by performing traffic control in cooperation with IP routes and optical cross-connects (OXCs) in multilayer IP optical networks. Hence, we can accommodate unexpected traffic- demand fluctuations and network failures by dynamically reconfiguring VNT so that it consists of several optical paths among IP routers. The key to achieving multilayer TE lies in the optimal design of VNT based on measured traffic demand. Thus, by introducing multilayer TE into a BoD service, we can enhance flexibility of the service regarding unexpected traffic- demand changes without adding operational overhead that affects customers of the service.
Keywords :
IP networks; optical fibre networks; telecommunication control; telecommunication traffic; virtual private networks; IP routes; bandwidth on demand services; demand service; multilayer IP optical traffic engineering technologies; network-resource utilization; optical cross-connects; virtual network topology control; Bandwidth; Board of Directors; Communication system traffic control; Fluctuations; Network topology; Nonhomogeneous media; Optical control; Optical fiber networks; Tellurium; Traffic control;
Conference_Titel :
Network Operations and Management Symposium Workshops, 2008. NOMS Workshops 2008. IEEE
Conference_Location :
Salvador da Bahia
Print_ISBN :
978-1-4244-2067-4
DOI :
10.1109/NOMSW.2007.34
