With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
prtMarkerDefaultIndex
Printer Marker Default Index
1.3.6.1.2.1.43.5.1.1.8
The value of prtMarkerIndex corresponding to the default marker sub-unit; that is, this object selects the default marker.
Back to Printer-MIB MIB page.
IPHost Network monitor allows you to monitor prtMarkerDefaultIndex 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.