NAT and NetFlow

Products

• CA Network Flow Analysis (NetQos / NFA)

Issue/Introduction

Issue/Problem/Symptoms:

On a router running Network Address Translation (NAT), NFA does not show private addresses on an Interface. It only shows the translated public IP address.

Environment:

NFA and Cisco NetFlow.

Cause:

NAT and NetFlow configuration.

Resolution/Workaround:

NFA is designed to report based on what it receives from the NetFlow Packets. Upgrading the router to Cisco's release of NetFlow Egress on IOS 12.3(11)T provides post-NAT NetFlow statistics, giving accurate NetFlow data for NAT traffic.

Additional Information:

Cisco IOS NetFlow

Environment

Release: RAIB1H99000-9.3-Network Flow Analysis-Interface Bundle-Hardware
Component: