With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cagwPathCurrentFlowsRev1
Cisco's ASN Gateway Path Current Flows Rev1
1.3.6.1.4.1.9.9.638.1.3.5.2.1.7
Number of Flows over the path.
Back to CISCO-ASN-GATEWAY-MIB MIB page.
IPHost Network monitor allows you to monitor cagwPathCurrentFlowsRev1 on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.