With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rprIfChangeSummarySpanLastChange
rpr If Change Summary Span Last Change
1.0.8802.17.1.1.1.1.5.4
Latest timestamp when any instance of rprSpanLastChange changed.
Back to IEEE-802DOT17-RPR-MIB MIB page.
IPHost Network monitor allows you to monitor rprIfChangeSummarySpanLastChange on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.