With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcFeModuleFxPortCapacity
fc Fe Module Fx Port Capacity
1.3.6.1.2.1.75.1.1.4.1.6
The number of FxPort that can be contained within the module. Within each module, the ports are uniquely numbered in the range from 1 to fcFeModuleFxPortCapacity inclusive. However, the numbers are not required to be contiguous.
Back to FIBRE-CHANNEL-FE-MIB MIB page.
IPHost Network monitor allows you to monitor fcFeModuleFxPortCapacity on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.