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Verification of Initial Data Flow

After configuring the collectors in NFO and the exporters on your network devices, verify that NFO is receiving flow data:

  • NFO Status Page: Navigate to the Status in the NFO web interface. Look for increasing counters, such as total input messages or input rate, msg/sec. If these counters remain at zero, it indicates a problem with data flow.
  • Basic Troubleshooting (Refer to the [Troubleshooting Guide](link to troubleshooting guide) for more detailed steps):
    • Connectivity Check: Use ping or traceroute from the flow exporting devices to the NFO server to ensure basic network connectivity.
    • Firewall Verification: Re-check firewall rules on both the network and the NFO server to confirm that UDP traffic on the collector port is allowed.
    • Exporter Configuration Review: Double-check the destination IP address and port configured on your flow exporting devices.
    • NFO Listener Configuration: Verify that NFO is indeed listening on the expected IP address and UDP port (using netstat or similar commands on the NFO server, as shown in the [Troubleshooting Guide](link to troubleshooting guide)).