With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
dot1xGuestVlanName
dot1x Guest Vlan Name
1.3.6.1.4.1.171.12.30.1.1
The VLAN name of guest VLAN.
Back to Dot1xMGMT-MIB MIB page.
IPHost Network monitor allows you to monitor dot1xGuestVlanName 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.