188     3     

3.2.  LLC  
  (802.2)

 LLC        -
  ,      ,
         .
 LLC       
 MAC.       -
    LLC    (,  IP, IPX 
NetBEUI),     ,     -
  ,   LLC  .  LLC
       ,   -
  .     -
 LLC          
   MAC,    LLC  
 (,  Ethernet).

 Ethernet                         LLC

V
 Ethernet

   LLC   HDLC (High-level Data Link Control
Procedure),   ISO.   HDLC -
     ,   
:  LAP-B  .25 (,   
 ), LAP-D,    ISDN, LAP-M, -
   .   IEEE 802.2   -
     HDLC.

     LLC    -
 ,        
  . -     
 ,      LLC,   LLC
    .     
    .

3.2.1.     LLC

    802.2     LLC
     :

 LLC1 -^       ;

 LLC2       ;

 LLC3     ,   .

          , -
  802.3 - 802.5,    FDDI   802.12
  lOOVG-AnyLAN.