With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swRSPANSourceIngress
Switch RSPAN Source Ingress
1.3.6.1.4.1.171.12.68.3.1.1.2
This object indicates the packets received on source ports will be mirrored to target ports in the source switch.
Back to RSPAN-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swRSPANSourceIngress 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.