With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
tn3270sStatsTN3270ConnectsFailed
tn3270s Stats TN3270 Connects Failed
1.3.6.1.4.1.9.9.54.1.2.1.1.7
Total number of attempted sessions which failed to negotiate TN3270/E or were rejected by control point.
Back to CISCO-TN3270SERVER-MIB MIB page.
IPHost Network monitor allows you to monitor tn3270sStatsTN3270ConnectsFailed on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.