In case there are different security classes among end user devices of the same group, the L2 network access tier devices may sub divide the group or more assign {HEAD ~ the lowest security class} to {TAIL ~ the group} to which the most vulnerable end user device conforms 
to
In case there are different security classes among end user devices of the same group , the L2 network access tier devices may sub divide the group or more assign { HEAD ~ the lowest security class } to { TAIL ~ the group } to which the most vulnerable end user device conforms
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH