With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcmPortSerialNumber
fcm Port Serial Number
1.3.6.1.2.1.10.56.1.3.1.10
The serial number associated with the port (e.g., for a GBIC). If not applicable, the object's value is a zero- length string.
Back to FC-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor fcmPortSerialNumber on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.
