Types:
1. unicast			one to one comm.
2. broadcast		one to all comm.		FFFF.FFFF.FFFF
3. multicast		one to many comm.		0180.C200.0000 to 0180.C2FF.FFFF


<<<<Most Significant<<<<			>>>>Least Significant>>>>

    6	    5	     4	 	3	2	1_________Bytes	=6

		Universally/Globally bit	=0	2nd bit, 1st Octet, 6th Byte
		Locally Adminned bit	=1	2nd bit, 1st Octet, 6th Byte
	     Î
	     Î
87654321-87654321-87654321-87654321-87654321-87654321_____Bits	=48
00000000-00001100-00000101-00001101-00010100-00111000_____Binary
	       Î
	       Î
		Unicast addr bit	=0	1st bit, 1st octet, 6th Byte
		Multicast addr bit	=1	1st bit, 1st octet, 6th Byte


   00        0C	     05	       0D	15	38________Hex

----------OUI------------ 	 ------------NIC-----------






00-0C-05-0D-15-38	LAN3
00-0C-05-0D-16-11	LAN4
00-0C-0B-0B-3A-32	LAN5
00-0C-02-0C-03-05	LAN2


000C050D1538
000C020C0305

00-0C-05-0D-15-38	MAC__USB to Ethernet adaptor


00-1D-92-56-48-8B	MAC__Gigabit Ethernet adaptor





0	0000
1	0001
2	0010
3	0011
4	0100
5	0101
6	0110
7	0111
8	1000
9	1001
10-A	1010
11-B	1011
12-C	1100
13-D	1101
14-E	1110
15-F	1111