With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swRSPANState
Switch RSPAN State
1.3.6.1.4.1.171.12.68.1.1
This object indicates the RSPAN state. enabled (1) - This entry resides in the table. disabled (2) - Writes this value to the object and then removes the corresponding entry from the table.
Back to RSPAN-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swRSPANState 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 routers right now.