______________    7

 ........................................................................................ 215

   Ethernet 10 /........... 215

3.3.5.     Ethernet.................................. 216

 PDV................................................................................................. 217

 PVV................................................................................................. 219

 ........................................................................................................................... 220

3.4.  Token Ring (802.5).............................................................................. 221

3.4.1.    ................................................... 221

3.4.2.       ................................. 222

3.4.3.   Token Ring....................................................................... 224

.......................................................................................................... 224

    ...................... 224

    ......................................................... 226

3.4.4.    Token Ring....................................... 227

 ........................................................................................................................... 229

3.5.  FDDI........................................................................................................ 230

3.5.1.    ................................................... 230

3.5.2.    FDDI.......................................................... 232

3.5.3.   FDDI................................................... 233

3.5.4.    FDDI................................................. 235

3.5.5.  FDDI   Ethernet  Token Ring................ 236

 ........................................................................................................;.................. 237

3.6. Fast Ethernet  lOOVG-AnyLAN    Ethernet....... 238

3.6.1.    Fast Ethernet................................... 239

  lOOBase-FX  

,  .................................................................. 242

  lOOBase-TX    UTP Cat 5

 STP Type 1,  .................................................................. 243

  100Base-T4    UTP Cat 3,

  ............................................................................................244

3.6.2.    Fast Ethernet

   ............................................................ 245

   DTE-DTE......................................... 246

  Fast Ethernet, 
 .................................................................................... 246

3.6.3.   lOOVG-AnyLAN............................................. 249

 ........................................................................................................................... 251

3.7.   Gigabit Ethernet............................................. 252

3.7.1.    ............................................................. 252

3.7.2.      200 

  ..................................................................................... 255

3.7.3.     802.3z ......................... 256

 ............................................................................ 256

  .............................................................................. 256

 ......................................................................... 257

3.7.4. Gigabit Ethernet     5 ......................................... 257