# topology file must start with keyword topology## topology {TOPOLOGY} [KEY=VAL [KEY=VAL [...]]]# failure_model {FAILURE_MODEL} [KEY=VAL [KEY=VAL [...]]]#         <--- empty line# node-id x,y# node-id x,y# ...# node-id can't be 0topology Euclidean 7failure_model ConstantFailureModel1 0,02 5,53 8,84 12,65 13,86 0,07 20,34