Network Management

NetFlow and CBQoS Data Not Available for Node ‘xxx’

The Cisco ISR4451-X/K9 router is not sending NetFlow or CBQoS data to SolarWinds NetFlow Traffic Analyzer (NTA), resulting in the message: "Details for the node 'xxx' are not available because NetFlow and CBQoS data are not available."

First published date

4/24/2025 10:14 PM

Last published date

9/6/2025 2:09 AM

Overview

In NTA, the NetFlow and CBQoS data are not available to a node Cisco Router (Cisco ISR4451-X/K9), that it is not sending the flow to SolarWinds NTA.

The issue may still occur even after the router configuration matches that of other routers. (If having similar routers and issue is with 1 device).

Product section

Netflow Traffic Analyzer

Resolution

Troubleshooting steps to check

  • Is this device newly configured?
  • Have you made any recent changes?
  • Have you checked if the device is properly configured?
  • Are you able to ping & test the device?
  • Are the NetFlow traffic ports enabled? Port 2055 (TCP&UDP) 
  • Has the NetFlow traffic been flowing into the SolarWinds? Have you checked it?
  • Gather diagnostics

 

To verify if the NetFlow traffic port is enabled in 2055, refer to the following article. 

Verify Netflow traffic is received in NTA port 2055

 

Resolution

Please note that if you are not seeing expected flow‑ or CBQoS-enabled devices in the Flow and CBQoS Sources widget, confirm that the following is true for your flow‑ and CBQoS-enabled devices:

  • Confirm that the automatic addition of NetFlow sources option is enabled on the NetFlow Traffic Analysis Settings view. For more information, see Enable the automatic addition of flow sources.
  • Flow‑enabled nodes and interfaces must be monitored by NPM before they can be recognized in as flow sources in NTA. For more information about adding devices for monitoring by NPM, see Add flow-enabled devices and interfaces to the SolarWinds Platform database.
  • Flow-enabled devices must be configured to send flow data to the NPM server on which you have installed NTA. For more information about configuring devices to send flows to NTA, see Device configuration examples for NTA.
  • Confirm that the SolarWinds NetFlow Service has been started in the Windows Services listing. To view a list of services, log on to your NTA server as an administrator, and then open Control Panel > Administrative Tools > Services.

Time stamp "never" or not up to date

If the time stamp of the last received NetFlow or CBQoS data is not as expected, click Manage Flow Sources to confirm that flow monitoring is enabled for the

appropriate device and interfaces. For more information, see Flow sources and CBQoS polling.

For more information, refer to the following guide. Flow and CBQoS Sources