With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cfcOc192FabFrFabPktLenErrs
Cisco Fabric C12000 Oc192 Fab Fr Fab Packet Len Errs
1.3.6.1.4.1.9.9.281.1.3.1.2.1.1
Count of the packets (after reassembly from Cisco cells) which exceed the maximum permitted packet length of FrFabFIA. These packets will be dropped.
Back to CISCO-FABRIC-C12K-MIB MIB page.
IPHost Network monitor allows you to monitor cfcOc192FabFrFabPktLenErrs on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.