# , #Cisco? Telegram!

3

, serial , DCE DTE. .

Serial WAN (Wide Area Network) . - CSU/DSU (Channel Service Unit/Data Service Unit) .

   DTE  DCE

CSU/DSU DCE (Data Communication Equipment) , , . DTE (Data Terminal Equipment) , .

, DTE, DCE.

. serial , DCE, DTE. , , show controllers [].

Router1>en
Router1#show controllers serial 2/0
Interface Serial2/0
Hardware is PowerQUICC MPC860
DCE V.35, no clock
idb at 0x81081AC4, driver data structure at 0x81084AC0

, DCE . , DCE, DTE.

, , , , DCE, DCE , CSU/DSU, .

clock rate [ /]

Router1#conf t
Router1(config)#int se 2/0
Router1(config-if)#clock rate ? 
Speed (bits per second
  1200           
  2400           
  4800           
  9600           
  19200          
  38400          
  56000          
  64000          
  72000          
  125000         
  128000         
  148000         
  250000         
  500000         
  800000         
  1000000        
  1300000        
  2000000        
  4000000        
  <300-4000000>  Choose clockrate from list above
Router(config-if)#clock rate 64000

. , clock rate DTE .

Router2(config)#int se2/0
Router2(config-if)#clock rate 64000
This command applies only to DCE interfaces

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