With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
sdlcPortStatsIFramesOut
sdlc Port Stats I Frames Out
1.3.6.1.2.1.41.1.1.3.1.11
This object reflects the total number of I-Frames that have been transmitted by SDLC link stations on this port. This object is initialized to zero when the port is created.
Back to SNA-SDLC-MIB MIB page.
IPHost Network monitor allows you to monitor sdlcPortStatsIFramesOut 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.