With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cslbxFtDuplPackets
Cisco Server Load Balancing Ft Dupl Packets
1.3.6.1.4.1.9.9.254.1.10.1.1.21
The total number of duplicate Fault Tolerance messages ever received by this SLB device.
Back to CISCO-SLB-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cslbxFtDuplPackets on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.