116                               ___________________ Internet

   CIDR

     Internet    ,  -
       -
:

   .    ,   -
        
 .  ,   254 , 
'  ,   ,  65534    -
     (500  5000 ).

D    .    -
  Internet-   ,   
  ,     -
    .

   1992  IETF (Internet Engineering Task Force)  -
      -
 CIDR (Classless Inter-Domain Routing)    -
. CIDR       Internet,
   IPv4,    IPv6     -
  .

  CIDR       -
 (VLSM  variable length subnet masks)     Internet  
 ,   .   ,   Internet,
      ,    
 . ,  Internet "ABC",  NIC 
  198.24.0.0  198.31.255.255 ( 255.248.0.0)  
  ""    198.24.8.0  198.24.11.255 (
255.255.252.0). ,   ""      , ,
  ,     Internet.

,       -
     ,   
,     .     
    Internet,    <, >, 
  . ,  ,     Internet
999 ,           ,
    ,    -
 ,  < 198.24.8.0, 255.255.252.0>  1024 .

 , -,       
  , -,    
      , -
  ,  ,    -
 .