With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cwsControllerStatus
Cisco WAN Service Controller Status
1.3.6.1.4.1.351.140.1.1.6
The administrative status for the pnni active controller.
Back to CISCO-WAN-SVC-MIB MIB page.
IPHost Network monitor allows you to monitor cwsControllerStatus 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.