With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
dot3adAggPortStatsMarkerPDUsTx
dot3ad Agg Port Stats Marker PD Us Tx
1.2.840.10006.300.43.1.2.2.1.7
The number of Marker PDUs transmitted on this Aggregation Port. This value is read-only.
Back to IEEE8023-LAG-MIB MIB page.
IPHost Network monitor allows you to monitor dot3adAggPortStatsMarkerPDUsTx 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.