With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swEtherCableDiagPair2Status
Switch Ether Cable Diag Pair2 Status
1.3.6.1.4.1.171.12.58.1.1.1.5
This object indicates the status of pair 2 of the cable.
Back to CABLE-DIAG-MIB MIB page.
IPHost Network monitor allows you to monitor swEtherCableDiagPair2Status 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 VPN routers right now.