Network Management

NTA not collecting data - Unable to start listening on configured port 2055

NTA is not collecting data and the following message appears in the NTA.BusinessLayer.log file: [Flow Listener on port 2055] WARN SolarWinds.Netflow.Processing.PacketListener - Unable to start listening on configured port 2055. Waiting for 10sec for the port

First published date

10/9/2018 7:37 PM

Last published date

10/9/2018 7:37 PM

Overview

NTA is not collecting data and the following message appears in the NTA.BusinessLayer.log file:

[Flow Listener on port 2055] WARN SolarWinds.Netflow.Processing.PacketListener - Unable to start listening on configured port 2055. Waiting for 10sec for the port

 

Product section

Netflow Traffic Analyzer

Cause

This is caused by another process using port 2055 and therefore NTA cannot use the port for listening.

Resolution

  1. Determine what application is using the port by running the following command from Administrator CMD prompt on the poller:
netstat -ano | find ":2055"
  1. Take note the Process ID.
  2. Stop the service using the port:
    1. Open Windows Task Manager and go to the Services tab.
    2. Sort by PID [Process ID].
    3. Locate the service with the PID from Step 3b and stop the service.

Note: If you cannot find a process in Task manager that matches the PID from the netstat command, it is likely that there is a service that did not stop properly that is still using the port. In this instance a reboot of the server will clear the service.