With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprSpanStatsOutTopoTpFrames
rpr Span Stats Out Topo Tp Frames
1.0.8802.17.1.1.1.3.4.1.48
The number of transmitted (MAC to PHY) topology TP frames generated by this MAC.
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprSpanStatsOutTopoTpFrames on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.