How do you give ip address in serial port?

To assign an IP address to a device connected via a serial port, you typically use a terminal emulation program (like PuTTY or Tera Term) to access the device's command-line interface. Once connected, you can enter configuration commands specific to the device's operating system, such as ip address [IP_ADDRESS] [SUBNET_MASK] in Cisco iOS. Be sure to save the configuration after making changes. The exact commands may vary depending on the device and its firmware.