58                                                                  Internet

Control (1 ).  .     -
 00000011,      
 .       -
.

Protocol (2 ).  .    ,
     . ,  IP
    00021 (33).

Information.  .       ;  
  ,    .  -
     
""      FCS.  
    1500 .    -
,       -
    .

FCS (2 ).   .     -
    .     -
,      32- (-
)  FCS,     .

(^)

 LCP      -  -
 .

   , LCP  IPCP    RFC-1134,
RFC-1171, RFC-1172, RFC-1331, RFC-1332, RFC-1548.

 TCP, UDP  1

 TCP

TCP (Transmission Control Protocol,   ) 
       -
   . TCP    -
      ,  
 . TCP,   ,    -
  ,   ,  , -
 "" :    ,
,  ,  IP.

    TCP   
  (),  ,  ,   -
  .      TCP
   ,     -