With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoDlswTConnOperEntryTime
cisco Data Link Switching T Connection Operation Entry Time
1.3.6.1.4.1.9.10.9.1.2.3.1.4
The value of ciscoDlswUpTime when this transport connection conceptual row was created.
Back to CISCO-DLSW-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoDlswTConnOperEntryTime on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.