This read-create object selects the algorithm used to permute, or vary, the WEP encryption key between scheduled key renewal periods for client stations on this VLAN. It's an additional hardening measure that changes the effective key material more often than the base rotation interval alone would provide. For example, an admin trying to reduce the exposure window of a static WEP key on a given VLAN would configure cwvlWlanWepKeyPermuteAlgorithm to actively vary the key between the renewal intervals set by cwvlWlanNUcastKeyRotateInterval.