With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cefDistributedGroup
CISCO Express Forwarding Distributed Group
1.3.6.1.4.1.9.9.492.2.1.2
This group consists of all the Managed objects which are only applicable to CEF is the value of object cefDistributionOperState is 'up'.
Back to CISCO-CEF-MIB MIB page.
IPHost Network monitor allows you to monitor cefDistributedGroup 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.