3.2.  LLC     (802.2)      189

       LLC1  -
       .   
.     ,   ,  -
      ,  -
  ,        LLC.

      LLC2  -
       
   ,   ,   
         
.  LLC2      HDLC
(LAP-B, LAP-D, LAP-M),       -
      .  LLC2 
   .

   (,      -
 ,   ),   -
       , 
      , 
        . 
    ,  
  ,    LLC3.

       LLC   -
    . ,   TCP/IP -
 LLC     LLC1,     
       IP, ARP, RARP.
   LLC  IPX/SPX.

   Microsoft/IBM,    NetBIOS/NetBEUI, 
  LLC2.   ,    NetBIOS/Net-
BEUI         
.        LLC2.   
NetBIOS/NetBEUI    ,   LLC  
 LLC1.

 LLC2     SNA   ,  
    Token Ring.

3.2.2.   LLC.   
 LLC2

      LLC (   802.2 -
   Protocol Data Unit, PDU)      -
,   .

   (Information)    -
       LLC2  
   .    -
        .

   (Supervisory)      -
       LLC2,  