With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
tn3270sRunningTime
tn3270s Running Time
1.3.6.1.4.1.9.9.54.1.1.1.1.12
Total time elapsed since start of tn3270 server.
Back to CISCO-TN3270SERVER-MIB MIB page.
IPHost Network monitor allows you to monitor tn3270sRunningTime on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.