With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
crcSpanDstPermitListEntry
crc Span Dst Permit List Entry
1.3.6.1.4.1.9.9.103.1.2.8.1
Describes a particular entry that can be set as SPAN destination.
Back to CISCO-RMON-CONFIG-MIB MIB page.
IPHost Network monitor allows you to monitor crcSpanDstPermitListEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.