Changing the IP address of a switch or router typically involves accessing the device's configuration interface via a web browser or command-line interface (CLI) and then modifying the network settings. Here are the general steps for changing the IP address of a switch or router:

1. Connect to the Device: Ensure that your computer is connected to the switch or router either directly via Ethernet cable or through the network.

2. Determine Current IP Address: If you don't already know the current IP address of the switch or router, you can check it by using the command prompt (Windows) or terminal (macOS/Linux) and typing the appropriate command. For example, you can use the ipconfig command on Windows or the ifconfig command on macOS/Linux.

3. Access the Configuration Interface: Open a web browser and enter the current IP address of the switch or router into the address bar. This will bring up the login page for the device's configuration interface. You may need to enter a username and password to log in. If you don't know the login credentials, you may need to consult the device's documentation or contact the manufacturer.

4. Navigate to Network Settings: Once logged in, navigate to the network settings or LAN settings section of the configuration interface. This may be labeled differently depending on the device manufacturer and model.

5. Change IP Address: Locate the field where the current IP address is displayed and modify it to the desired new IP address. Be sure to enter the correct subnet mask and default gateway as well. These settings may be required for the device to communicate properly on the network.

6. Save Changes: After entering the new IP address and any other necessary network settings, save the changes. This may involve clicking a "Save" or "Apply" button within the configuration interface.

7. Verify Connectivity: Once the changes are saved, verify that you can still access the device using the new IP address. Open a web browser and enter the new IP address into the address bar. If you can access the device's configuration interface, the new IP address has been successfully configured.

8. Update Network Settings: If the switch or router is providing network services (such as DHCP or DNS), you may need to update the network settings on other devices to reflect the new IP address.

It's important to note that the exact steps for changing the IP address may vary depending on the make and model of the switch or router. Always refer to the device's documentation or contact the manufacturer for specific instructions. Additionally, be cautious when making changes to network settings, as incorrect configurations can result in loss of connectivity or other network issues.