Information About Flexible Netflow Application Visibility
The Flexible NetFlow (FNF) provides statistics on packets flowing through the device. The FNF on WAN or LAN interfaces provide visibility for all the traffic (both ingress and egress) hitting the WAN or LAN interfaces on Cisco SD-Routing devices by using the Application Intelligence Engine (SAIE). The Application Intelligence Engine flow provides the ability to look into the packet past the basic header information. The SAIE flow determines the contents of a particular packet, and then either records that information for statistical purposes or performs an action on the packet.
Note |
You can apply FNF only on WAN or LAN interfaces. You should not apply on both WAN and LAN interfaces. |
To enable t he Flexible Netflow Application Visibility on the device, you must enable the flow data aggregation using Cisco SD-WAN Manager in the following ways:
-
Performance monitor context profile (recommended method)
-
Flow exporter to local controller
Note |
If you have a existed FNF monitors, to avoid performance impact by adding a new performance monitor, add the flow exporter to local controller as flow exporter of existed FNF monitor. Otherwise, you can use the performance monitor context profile. |