With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprSpanProtectionCount
rpr Span Protection Count
1.0.8802.17.1.1.1.1.4.1.6
The number of transitions from idle state to active protection state. The discontinued counter value is indicated by the ifCounterDiscontinuityTime value.
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprSpanProtectionCount on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.