This object specifies key index for the EAP dynamic Wired Equivalent Privacy security policy. It applies to Static WEP key index of WLAN which has layer 2 security of type Static WEP. According to 802.11 standard 4 keys are supported for informing Mobile Station (clients) which key it should use for Static WEP Authentication The default value of 0 works for all devices, but for some old devices/clients which uses the unicast key as 3, the key index has to be configured to 3 to match the client side setting.