# Network Troubleshooting FAQ

Check these frequently asked questions before proceeding to the other networking topics.

Problem | Troubleshooting
The device does not appear in the In-Sight® Device Pane | Note: After completing each of the following steps, click the Refresh Devices button in the Menu Bar to repopulate the Device Pane. If each of the following steps fails, use the Network Settings dialog to reconfigure the network settings of the device, and the Network dialog to configure the subnet. Ensure that power and Ethernet cables are securely plugged into the device. Verify that the power and connection LEDs (if available) are properly lit up on the device. Ensure that the PC running the software is on the same network as the device. Ensure that the device's IP address is correctly configured for the network. Ensure that the device's subnet mask is correctly configured for the network.
Unable to connect to the device when connected to a hub or switch. | Note: A switch is the preferred networking method. Ensure that the network and power cables are properly connected to the switch and are in good working order. Check that the activity lights of the hub/switch are properly lit up. Verify that the power and connection LEDs of the device (if available) are properly lit up. Ensure that the switch does not have any additional functionality enabled, such as port blocking or filtering.
An IP address must be assigned to the device. | In-Sight vision systems are configured to use DHCP by default. If your network does not have a DHCP server, and you know the IP address of the device, use the Configure Manual Devices dialog to add the device. Note: The default setting for devices is to use DHCP. However, the devices can be given a static IP address, too. You should only use the default DHCP setting if you have a DHCP server on your network. When installing the device to an existing network, consult your network administrator to determine whether a DHCP server is available.
The device must be moved to a different network. | If you have set up your vision systems and need to change the IP addresses to a new network that does not have a DHCP server (this can occur, for example, during deployment to a production line), use the Network Settings utility to change the network settings of the affected devices. Note: The PC running the software must remain on the original network to identify the devices and let you modify their IP addresses.
The PC running the software is on a different subnet than the device. | If the device is configured to operate on a different subnet than the PC running the software, then the device appears in the In-Sight® Device Pane only if you define that subnet through the Network dialog.
Time set of the camera is not syncing while the server is succesfully up. | If the server is successfully up and running, but the time set of the camera is still not syncing, modify the host systems firewall settings for port 123 to allow UDP in and out.