With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cseFlowMcastResultGrp
CISCO SWITCH ENGINE Flow Mcast Result Group
1.3.6.1.4.1.9.9.97.1.2.13.1.2
The multicast group IP address of the multicast layer 3 flow. This object is deprecated and replaced by cseFlowMcastResultAddrType and cseFlowMcastResultGroup.
Back to CISCO-SWITCH-ENGINE-MIB MIB page.
IPHost Network monitor allows you to monitor cseFlowMcastResultGrp 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.