With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
sdlcLSStatsDMOut
sdlc LS Stats DM Out
1.3.6.1.2.1.41.1.2.3.1.32
This object reflects the total number of disconnect mode (DM) requests transmitted to an adjacent SDLC link station since link station startup. At link station startup time, this object must be initialized to zero.
Back to SNA-SDLC-MIB MIB page.
IPHost Network monitor allows you to monitor sdlcLSStatsDMOut 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.