With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
tn3270eTcpConnResourceElement
tn3270e Tcp Connection Resource Element
1.3.6.1.2.1.34.8.1.9.1.10
LU/Print secondary name for connecting an client into an SNA network.
Back to TN3270E-MIB MIB page.
IPHost Network monitor allows you to monitor tn3270eTcpConnResourceElement 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.