A customer already has a 4 Gbps FICON cascade DWDM link between two sites 75 km apart. They want to increase this to 8 Gbps and have confirmed that this service is available from their DWDM…

A customer already has a 4 Gbps FICON cascade DWDM link between two sites 75 km apart. They want to increase this to 8 Gbps and have confirmed that this service is available from their DWDM supplier. The average frame size determined by RMF is 1024 bytes. What is the minimum distance setting in portcfglongdistance LS to match the increased link speed?