# IP address and port conflicts

All IP addresses and ports used for connections must be available for both receiving and sending data. Using the same IP address and port for two or more devices will cause a conflict between devices, and systems will fail to communicate with each other.

Do the following to check the network:

1. Try to `ping` the relevant IP addresses, and check the computer's DNS settings, if required.

2. Run the `netstat` command. This command will display both incoming and outgoing network connections for a number of network interfaces. It is typically preinstalled on Windows 8, Windows 10, and Windows 11.

If a repeat IP address is identified, contact the site system administrator for assistance.

If no duplicate IP address is found, contact the site system administrator to see if a firewall is blocking the access to the IP addresses and ports you have configured for your hardware both in Smart AMS and in the device controllers.

## Applies to: