With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cieLocalTimeEstablished
Cisco IP Encryption Local Time Established
1.3.6.1.4.1.9.9.52.1.3.2.1.8
Value of sysUpTime at which the connection was established or re-established.
Back to CISCO-IP-ENCRYPTION-MIB MIB page.
IPHost Network monitor allows you to monitor cieLocalTimeEstablished 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.