It is important to pay close attention to aspects of the WLAN design that impact range, performance, and roaming. Bear in mind that sometimes range and performance indirectly proportional. As a result, have a good idea of whether range or performance is more essential before getting too far with the design. If focusing on maximizing range, consider signal coverage requirements, radio frequency bands, transmit power settings, transmission channel settings, data rate, antennas, amplifiers, repeaters, physical obstacles, and radio signal interference. If performance is important, consider radio frequency bands, transmit power settings, transmission channel settings, data rate settings, antennas, amplifiers, physical obstacles, radio signal interference, channel width settings, signal coverage, fragmentation settings, RTS/CTS settings, multicasting mechanisms, and microcell deployment strategies. To optimize roaming in cases where mobility is imperative, think about the various levels of roaming, special considerations for wireless IP phones, and mobility settings.