With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swL2PortSecurityMode
Switch L2 Port Security Mode
1.3.6.1.4.1.171.11.70.5.2.7.1.1.3
Indicates the mode of locking address. In deleteOnTimeout(3) mode - the locked addresses can be aged out after the aging timer expires. In this mode, when the locked address is aged out, the number of addresses that can be learned has to be increased by one. In deleteOnReset(4) mode - Locked addresses never age out unless the system restarts which will prevent port movement or intrusion.
Back to DES3552-L2MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swL2PortSecurityMode on D-Link device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring D-Link WiFi routers right now.