With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprClientCurrentInUcastClassBCirOctets
rpr Client Current In Ucast Class B Cir Octets
1.0.8802.17.1.1.1.4.1.1.5
The number of MAC to client classB CIR unicast octets in the current interval.
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprClientCurrentInUcastClassBCirOctets 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.