Help NetFlow Network Traffic

Site24x7 NetFlow Analyzer | Network Traffic Monitoring

Obtain complete visibility into your network traffic and bandwidth performance in real time. Identify traffic peaks, top applications, and conversations using different flow technologies so that you can analyze for what and by whom your bandwidth is being used.

In this doc, we'll cover:

Prerequisites

  • To perform network traffic analysis using Site24x7, you must install an On-Premise Poller (version: 4.6.0 or above) in the network being monitored.
  • The devices should be able to export flows to Site24x7.

System Requirements

To analyze your network traffic deeply using Site24x7 Network Traffic Monitoring, there are certain hardware and port requirements.

Hardware requirements based on rate of flow

Hardware requirements are susceptible to change based on the rate of flow. Here's the consolidated list based on the flow rate:

Maximum no. of devices per On-Premise PollerRate of flow/secondProcessorRAMDisk space for aggregate data
50 0 to 3,000 2.4 GHz Quad core 8 GB 200 GB
100 3,000 to 10,000 3.2 GHz Quad core 16 GB 250 GB
200 10,000 to 50,000 3.2 GHz Quad core 24 GB 300 GB

Server type: Only 64 bit OS is supported.

Aggregated data is calculated based on the top 100 records.

Port requirements

Port nameDefault port numbersUsage
NetFlow listener port 9996 (Learn more about On-Premise Poller-specific port number) The listener port on which NetFlow exports are received from routers.
SNMP 161 The default SNMP port to fetch the device information.

How it Works

You have to install an On-Premise Poller and configure your devices to export flows to it. Once the On-Premise Poller receives the flows, the list of all devices that export flows to Site24x7 will be displayed, from which you can pick the desired devices and interfaces and add them for analysis.

Site24x7 analyzes the traffic and bandwidth at the device, interface, application, and conversation level and provides you with different performance metrics that you can correlate to obtain insights. With numerous graphs and reports as well as the custom dashboard, Site24x7 simplifies your usage and performance monitoring.

Supported Flows

Adding a Device to Monitor Network Flows

Export your network traffic to Site24x7 to monitor the traffic flows and bandwidth performance in real time. You can set up a device to export flows for network traffic analysis by following the five steps below:

  1. Choose an On-Premise Poller.
  2. Export commands to configure flow exports. You can do this manually or automatically by providing your network credentials.
  3. Choose devices and interfaces.
  4. Organize your monitors and configure profiles.
  5. Verify your entries and export flows for monitoring.

NetFlow Templates

Site24x7 provides a list of predefined templates that contain preconfigured values. The different types of templates are:

  • Application templates: These templates are matched with the applications, protocols and ports and are associated with the template for simplified analysis.
  • DSCP templatesDifferentiated Services Code Point (DSCP) is a way of classifying and managing network traffic to obtain the quality of service stats on modern networks.

You can use the generic templates or create custom templates. 

Performance Metrics Monitored

Network Traffic Monitoring works by analyzing the traffic performance at different levels:

Threshold and Availability Profile

Configure threshold limits for different performance metrics, so that you can receive alerts and take necessary actions when they are breached. You can also do this at the child-level for interface metrics.

Health Dashboard

Obtain a complete picture of the top devices and interfaces that generate maximum traffic and use the network bandwidth using the NetFlow Health Dashboard. This will give you a thorough understanding of the traffic pattern in your network and the interfaces that carry maximum traffic.

Troubleshooting Tips

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Help NetFlow Network Traffic