With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ipMRouteInterfaceOutMcastOctets
ip M Route Interface Out Mcast Octets
1.3.6.1.2.1.83.1.1.4.1.6
The number of octets of multicast packets that have been sent on the interface.
Back to IPMROUTE-STD-MIB MIB page.
IPHost Network monitor allows you to monitor ipMRouteInterfaceOutMcastOctets 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.