Title :
Restoration Mechanism and Maximum Dual Failure Restorability of Span-restorable Optical Networks
Author_Institution :
Swiss Fed. Lab. for Mater. Testing & Res., Duebendorf
Abstract :
A survivable network is commonly designed to be 100% restorable to any single span failure. The restoration mechanism of networks with span restoration is not as straightforward as that of networks with dedicated path protection. The restoration of span-restorable networks can be conducted in real time or preplanned and cross-connected immediately when any failures occur. The disadvantages and advantages of these two mechanisms are discussed. Two linear programming formulations to maximize average dual-failure restorability of a network are developed. A case study shows the flaw of the k-shortest path routing in real-time routing
Keywords :
linear programming; optical fibre networks; telecommunication network reliability; telecommunication network routing; telecommunication network topology; dual failure restorability; k-shortest path routing; linear programming formulations; real-time routing; span-restorable optical networks; survivable network; Costs; Integer linear programming; Laboratories; Lead; Linear programming; Materials testing; Optical design; Optical fiber networks; Protection; Routing; Dual failure restorability; integer linear programming; k-shortest path; optimization; span restoration;
Conference_Titel :
Optical Fiber Communication & Optoelectronic Exposition & Conference, 2006. AOE 2006. Asian
Conference_Location :
Shanghai
Print_ISBN :
978-0-9789217-0-5
DOI :
10.1109/AOE.2006.307319
