With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
protocolDistControlDataSource
protocol Dist Control Data Source
1.3.6.1.2.1.16.12.1.1.2
The source of data for the this protocol distribution. The statistics in this group reflect all packets on the local network segment attached to the identified interface. This object may not be modified if the associated protocolDistControlStatus object is equal to active(1).
Back to RMON2-MIB MIB page.
IPHost Network monitor allows you to monitor protocolDistControlDataSource 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.