222     3     

3.4.2.      

      (  ,   Token Ring, 
 FDDI,   ,    802.4,  ArcNet,  -
  MAP)         
    .

  Token Ring    ,  -
 .  ,       
        
.          -
       .   Token Ring 
          ,
    .    
 ,     ()  Nearest Active Upstream
Neighbor, NAUN.        -
     .

 ,          
      . , 
   ,       , 
          .  
        
 .          
   .       .

	/^~\2	
1 /		
		( 3
L'		
)		\)4
	\/"5	

				\-/						
										
										
										
										
										

t1        t2        t3        t4

 1   
      3.
       
 

t7 t8 t9

 

  

   2

. 3.14.   