With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdpCacheCapabilities
Cisco Discovery Protocol Cache Capabilities
1.3.6.1.4.1.9.9.23.1.2.1.1.9
The Device's Functional Capabilities as reported in the most recent CDP message. For latest set of specific values, see the latest version of the CDP specification. The zero-length string indicates no Capabilities field (TLV) was reported in the most recent CDP message.
Back to CISCO-CDP-MIB MIB page.
IPHost Network monitor allows you to monitor cdpCacheCapabilities 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.