With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdpInterfaceName
Cisco Discovery Protocol Interface Name
1.3.6.1.4.1.9.9.23.1.1.1.1.6
The name of the local interface as advertised by CDP in the Port-ID TLV
Back to CISCO-CDP-MIB MIB page.
IPHost Network monitor allows you to monitor cdpInterfaceName on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.