Submit a ticketCall us

AnnouncementsChange Is Inevitable

Get valuable help when it comes to tracking and monitoring changes. SolarWinds® Server Configuration Monitor (SCM) is designed to help you: detect, track, and receive alerts when changes occur, correlate system performance against configuration changes, compare server and application configuration against custom baselines, and verify application and system changes.

Learn more.

Home > Success Center > Network Performance Monitor (NPM) > NPM - Knowledgebase Articles > Amount of network traffic generated by NetFlow

Amount of network traffic generated by NetFlow

Table of contents

Updated August 23, 2016

Overview

This is a brief overview of how much additional network traffic is generated by NetFlow.

Environment

  • All NPM versions
  • All NetFlow versions

Detail

NetFlow can be enabled on one of the routers, view the amount of NetFlow packets exported (flow-export show counters), then extrapolate from there.

The way NetFlow works, all packets with the same source/destination IP address, source/destination ports, protocol interface and class of service are grouped into a flow and then packets and bytes are summed. 

So, the amount of flows generated will depend on the targets of the traffic generated by the clients in each site. If there is a wide range of IPs being contacted by clients in a particular site, you may see more flows being created by that router. NetFlow can also be enabled at remote branch locations with the understanding that the export data will utilize bandwidth. About 1-5% of the switched traffic is used for export to the collection server.

 

Last modified

Tags

Classifications

Public