The Temporal Key Integrity Protocol (TKIP) was a temporary solution for use until the introduction of a stronger encryption method, but it at least dealt with the problems of the then popular WEP. Employing TKIP is only recommended for operating older WLAN clients which do not support AES.
Note: If an SSID uses only WEP or WPA with TKIP for encryption, the WLAN clients connected to it achieve a maximum gross data rate of 54 Mbps.
