With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdsmClfrNextFreeElement
Cisco DIFFSERV Classifier Next Free Element
1.3.6.1.4.1.9.9.381.1.1.2.1.2
This object contains an unused value for diffServClfrElementId for this value of diffServClfrId, or a value of zero if none exist.
Back to CISCO-DIFFSERV-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cdsmClfrNextFreeElement on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.