The data packets that are being transferred must be fragmented to accommodate the other networking device with the smaller MTU value. The user must be careful while giving the MTU value to the router through the
routerlogin.net window as an incorrect MTU value could bring communication problems within the device that connected to the same network. A perfect reason for changing the MTU value is that if the user is unable to access the secure login page, certain websites, POP, or FTP servers.