With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcmPortFullInputBuffers
fcm Port Full Input Buffers
1.3.6.1.2.1.10.56.1.4.1.2
The number of occurrences when all input buffers of a port were full and outbound buffer-to-buffer credit transitioned to zero, i.e., there became no credit to provide to other side.
Back to FC-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor fcmPortFullInputBuffers on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.