_____________________________..802.3)      203

   0 (       Ethernet),
   ,    IEEE.  IEEE
      -
   (Organizationally Unique Identifier, OUI).
    3    (, -
 000081   Bay Networks).   
3-     .   ,
      , 
 16      .
     
      Ethernet, Token Ring, FDDI  . .

      IEEE Ethernet         ,    -
  .          
      Ethernet.    ,  RFC IETF,
ITU-T, ISO,    ,      
 ,   -  .       .
   ,   ,    , 
      ,     Ethernet
  ,        
     IEEE. ,  ,    IEEE 
1000 0000 0000 0000 1010 0111 1111 0000 0000 0000 0000 0000    
80-00-A7-FO-00-00, ,  ,       
01-00-5E-OF-00-00._____________________________________

   (Source Address, SA)   2-  6- , 
    .       0.

  (Length, L)  2- ,      
.

   (Data)    0  1500 .    
 46 ,       ,  
       46 .

   (Padding)      ,
       46 .  -
     .   
 ,       .

    (Frame Check Sequence, FCS)   4 , -
  .      CRC-32.
       
    ,     -
    ,  , ,   
 .

 802.3   -,     -
 802.2        LLC  
    .   LLC   .   
LLC    3 (  LLC1)  4  (  LLC2), 
      1497  1496 .