With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cftIfTcpRxDupAcks
Cisco Fiber Channel Tunnel If Tcp Rx Dup Acks
1.3.6.1.4.1.9.9.9999.1.1.5.1.28
Number of duplicated TCP acknowledge packets received.
Back to CISCO-FC-TUNNEL-MIB MIB page.
IPHost Network monitor allows you to monitor cftIfTcpRxDupAcks 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.
