Canon LBP7210Cdn Manual page 557

The IP address is set for the printer.
The subnet mask and gateway address are set to [0.0.0.0].
Enter "exit", then press the [ENTER] key on your keyboard.
Command Prompt closes.
NOTE
If you changed the IP address after installing the printer driver
Specify the port to be used again in the printer driver.
After Changing the IP Address (Changing the Port)
Setting the IP Address Using the Printer Status Window
Display the Printer Status Window.
Click [ ] in the Windows task tray, and then select the printer name.
NOTE
When displaying the Printer Status Window from the printer driver
Click [ ] (Display Printer Status Window) in locations such as in the [Page Setup] sheet.
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Set the IP address.
(1) Specify each setting.
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