Network management and control contribute to at least half of the operating cost of current optical networks. All optical networks with end-to-end transparent lightpaths promise significant cost savings using optical switching at network nodes. However, this cost saving cannot be realized unless the cost of network management is also reduced. In this paper we explore some technique towards that goal. We consider the fault diagnosis problem in all optical networks, focusing on probing schemes to detect faults. Our work concentrates cost deduction on single link failure and multiple link failure in order to meet the stringent time requirements for fault recovery. The efficiency of often depends on the network topology.

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Network Cost link Failure Detection Optical Networks