72     1      

   ,      
         
.

1 \				/  3
	1		3	
,\^^ 2 \		 => 13 123		\w^^CL-^B\^  4 >
					
	2			
					
^l)				

. 1.27.   

      (packets).  -
         .
             -
      .          
  ,         
,   :     ,  -
        .

      .    
 (routed protocols)      . 
     ,      .
         , 
       -
 (routing protocols).      -
     .   
    ,   -
    .

       ,   
  ,    ,   
.         Address
Resolution Protocol, ARP.       ,   ,
      .

       -
 IP  TCP/IP      IPX 
Novell.

 

           .
       , -