Serial0/1 is up, line protocol is down (looped)

Selamlar,

Aşağıdaki ekranı alıyorum.TT kendisinden kaynaklana bir sorun olmadığını belirtiyor.  Encapsulation moe u HDLC ye çektik  modem değiştirdik  ama bir sonuç olmadı.TT ye kendilerinden kaynaklandığı konusunda ısrarcı mı olmalıyım ? 
Teşekkürler.

Gürkan
Serial0/1 is up, line protocol is down (looped)
  Hardware is PowerQUICC Serial
  Description: Villa'nin hatti
  MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, LCP Listen, multilink Closed
  Closed: BACP, loopback not set
  Last input 00:00:23, output 00:00:23, output hang never
  Last clearing of "show interface" counters 00:12:27
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 1536 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     300 packets input, 7050 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     16 input errors, 0 CRC, 16 frame, 0 overrun, 0 ignored, 0 abort
     300 packets output, 7050 bytes, 0 underruns
     0 output errors, 0 collisions, 41 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions
     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up

Serial1/0 is up, line protocol is down (looped)
  Hardware is DSCC4 Serial
  Description: NEWLINE for DATA
  Internet address is 172.25.0.1/16
  MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, LCP Listen, loopback not set
  Last input 00:00:24, output 00:00:24, output hang never
  Last clearing of "show interface" counters 00:12:28
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 1536 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     300 packets input, 4200 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     300 packets output, 4200 bytes, 0 underruns
     0 output errors, 0 collisions, 40 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions
     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up


      

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