With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rtsIfCellCount
rts If Cell Count
1.3.6.1.4.1.9.10.10.1.10.1.1.2
This object contains the count of cells queued to this interface in the traffic shaping hardware. This object is not instantiated for interfaces to which it cannot be applied.
Back to CISCO-ATM-RM-MIB MIB page.
IPHost Network monitor allows you to monitor rtsIfCellCount 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.