These variables include the number of {TAIL ~ tables}, {HEAD ~ the size} of the tables, the source index, i.e., port, MAC address, IP address, etc 
These variables include the number of { TAIL ~ tables } , { HEAD ~ the size } of the tables , the source index , i.e. , port , MAC address , IP address , etc
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH