With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprClientStatsOutUcastClassBEirOctets
rpr Client Stats Out Ucast Class B Eir Octets
1.0.8802.17.1.1.1.4.4.1.24
The number of client to MAC classB EIR unicast octets
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprClientStatsOutUcastClassBEirOctets 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.