Packet Tracer 6.1 netflow collection software deployed on end devices (servers or PCs) uses UDP port 9996. Second step : Configure the ISR router to send the flow records to the netflow collector. It is recommended to configure the flow on ingress. The flow can be configured on either ingress or egress direction. Netflow configuration using Cisco 2811 ISR routers Network topology and configuration instructionsįirst step : Configure netflow collection on router interfaces using the 'ip flow' IOS command. A netflow collector software on PC, laptop and server devices.This feature is not available on Layer 3 switches. Netflow version 9 on Cisco ISR routers.The following Netflow components are available in Cisco Packet Tracer :