With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cwdsiMacAuthCacheAge
cwdsi Mac Authenticaton Cache Age
1.3.6.1.4.1.9.9.509.1.1.1.1.2
This object specifies the elapsed time since the MAC address has been cached. If the MAC address is not flushed within the specific time(default 30 minutes), the entry with cwdsiMacAuthCacheMacAddr is removed.
Back to CISCO-WDS-INFO-MIB MIB page.
IPHost Network monitor allows you to monitor cwdsiMacAuthCacheAge 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.