This table contains encryption method and key
rotation configurations for all VLANs on all
IEEE 802.11 radio interfaces. This table has an
expansion dependent relationship on the ifTable.
For each entry in this table, there exists at least
an entry in the ifTable of ifType ieee80211(71).
VLANs are identified by the cd11IfVlanSecurityVlanId,
and the actual VLAN does not have to exist or be
enabled for the encryption configuration to exist.