With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alCertStatsServerCertTimeouts
ALTIGA Certificate Statistics Server Certificate Timeouts
1.3.6.1.4.1.3076.2.1.2.27.2.1.8
The total number of certificate timeouts to this server since client startup.
Back to ALTIGA-CERT-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alCertStatsServerCertTimeouts 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.