The WEP method uses keys of 40 (WEP64), 104 (WEP128) or 128 bits (WEP152) in length. Each WLAN interface has four WEP keys: a special key for each logical WLAN interface and three common group WEP keys for each physical WLAN interface.
Note: If 802.1x/EAP is in use and the 'dynamic key generation and transmission' is activated,
the group keys from 802.1x/EAP will be used and are consequently no longer available for WEP
encryption.
Rules of the entry of the keys can be found in the description of the WEP group key .
LANconfigWireless LAN / 802.11i/WEP / WEP group keys
WEBconfig: LCOS menu tree / Setup / Interfaces / WLAN / Group keys