With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
smonExtensions8Group
smon Extensions8 Group
1.3.6.1.4.1.9.9.103.3.2.11
A collection of objects providing additional port copy configuration extensions for agent that supports ingress traffic at destination port for the SPAN session.
Back to CISCO-RMON-CONFIG-MIB MIB page.
IPHost Network monitor allows you to monitor smonExtensions8Group on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.