With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
mplsInterfaceOutFragments
mpls Interface Out Fragments
1.3.6.1.3.96.1.2.1.8
This variable indicates the number of outgoing MPLS packets that required fragmentation before transmission on this interface.
Back to MPLS-LSR-MIB MIB page.
IPHost Network monitor allows you to monitor mplsInterfaceOutFragments 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.