338     4          

    100 /,   
   10-30      -
  .

. 4.43.    

      , -
     100 /,  Fast Ethernet.
            -
    ,    
 .

,        
  .      -
          -
 .        
     ,      
,        
  .

          -
        2500  
210 ,        -
 Ethernet  Fast Ethernet.

       -
,     1996 ,    
  Data Communications    -
    .

     

     ,   ,
            -
 .        -
   .

    (collapsed, backbone)   ,  -
  ,       -
 .        
. 4.44.

      -
.         -