With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdpInterfaceEntry
Cisco Discovery Protocol Interface Entry
1.3.6.1.4.1.9.9.23.1.1.1.1
An entry (conceptual row) in the cdpInterfaceTable, containing the status of CDP on an interface.
Back to CISCO-CDP-MIB MIB page.
IPHost Network monitor allows you to monitor cdpInterfaceEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.