A Procedure for Designing a Low Connected Survivable Fiber Network

A procedure for designing a survivable low connected fiber network, developed as part of the Dynamic Network Architecture^TM,¹is presented. There are two main steps for developing a survivable network, namely least cost network design and structural and operational survivability enhancements. In step 2, connectivity of the least cost all-fiber network may be increased bY adding new physical routes in the critical areas of the network. This will enhance the structural survivability of the network. Also in step 2, allocatable (spare) capacities are strategically located in the network. The allocatable capacities are designed to be utilized by the network intelligence to dynamicaily reconfigure the network in the case of failures. In addition to the description of the procedure, this paper presents the results of applying the method to a 43-node metropolitan test network.