With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
caclInValidRMCells
Cisco ATM cell layer In Valid RM Cells
1.3.6.1.4.1.9.9.133.1.2.1.1.11
The number of Valid RM cells received from the interface.
Back to CISCO-ATM-CELL-LAYER-MIB MIB page.
IPHost Network monitor allows you to monitor caclInValidRMCells 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.