PROBLEM TO BE SOLVED: To reduce the number of logical paths.SOLUTION: A logical path control system 1 includes: a plurality of optical line terminals (OLT) 40-1, ..., 40-X; a plurality of redundant edges 50-2, ..., 50-Y, and a logical path management controller 10 for controlling logical paths between the plurality of optical line terminals 40-1, ..., 40-X and the plurality of redundant edges 50-2, ..., 50-Y. The logical path management controller 10 determines, for each of the optical line terminals 40-1, ..., 40-X, the number of logical paths to be set by the plurality of optical line terminals 40-1, ..., 40-X and sets logical paths, the number of which is the determined number, between the plurality of optical line terminals 40-1, ..., 40-X and the plurality of redundant edges 50-2, ..., 50-Y.SELECTED DRAWING: Figure 1
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