This is the association identification number of
clients or multicast addresses associating with this
device. For a multicast address with clients, the
cDot11ClientAid is '0'. For the uplink association
from this device to its parent access point, the
cDot11ClientAid is always '1'. For any multicast
address with no client currently known to be
associated with this device, the cDot11ClientAid is
'2008'.