With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprSpanErrorDayErroredSeconds
rpr Span Error Day Errored Seconds
1.0.8802.17.1.1.1.5.3.1.14
The number of errored seconds.
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprSpanErrorDayErroredSeconds 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.