With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
crcSpanSessionEgressModeEntry
crc Span Session Egress Mode Entry
1.3.6.1.4.1.9.9.103.1.5.2.1
Describes a particular SPAN session that is capable of monitoring egress traffic.
Back to CISCO-RMON-CONFIG-MIB MIB page.
IPHost Network monitor allows you to monitor crcSpanSessionEgressModeEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.