With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cwdsiMnLifetime
cwdsi Mn Lifetime
1.3.6.1.4.1.9.9.509.1.3.1.1.15
This object specifies the maximum time after which the registration of the Mobile Node with its WDS expires. The Mobile Node must re-register before the time expires, otherwise it will be deleted from the table.
Back to CISCO-WDS-INFO-MIB MIB page.
IPHost Network monitor allows you to monitor cwdsiMnLifetime on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.