5.6.          441

  ,     33,6 / 
  64 /.        10 /,
     100 /.   3- 
  CoreBuilder 3500  3Com, Accelar 1200 
Nortel Networks, Waveswitch 9000  Plaintree, Turboiron Switching Router
 Foudry Networks.

       
    .

   

      ,   -
         . 
        
   .

   .  
        -
,       
  (    ,     -
,     legacy),   , 
      .   
    Internet,    
    ,   EGP  BGP. -
       -
 ,       
  ,   .

       IP,
CONS  CLNS OSI, IPX, AppleTalk, DECnet, Banyan VINES, Xerox XNS.

     IP RIP, IPX RIP,
NLSP, OSPF, IS-IS OSI, EGP, BGP, VINES RTP, AppleTalk RTMP.

      .  -
    ,     -
  Ethernet, Token Ring, FDDI, Fast Ethernet, Gigabit Ethernet, lOOVG-AnyLAN
.

           -
  ,       ,
          -
.

    (serial lines) RS-232,
RS-449/422, V.35 (      2-6 /), -
  HSSI,    52 /,   -
    1/1, /   BRI  PRI 
 ISDN.       
 ,      -
    .

       
.25, frame relay, ISDN     ,  ,
      .