With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
addressMapTable
address Map Table
1.3.6.1.2.1.16.13.5
A table of network layer address to physical address to interface mappings. The probe will add entries to this table based on the source MAC and network addresses seen in packets without MAC-level errors. The probe will populate this table for all protocols in the protocol directory table whose value of protocolDirAddressMapConfig is equal to supportedOn(3), and will delete any entries whose protocolDirEntry is deleted or has a protocolDirAddressMapConfig value of supportedOff(2).
Back to RMON2-MIB MIB page.
IPHost Network monitor allows you to monitor addressMapTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.
