I have a problem working with packet tracer the serial interface is down down , why ? I am trying to connect 2 routers, the one end has DCE attached and other is DTE. What did I do wrong here is the display of the interface.
thanks for the help
R1#show inter ser 0/0/0
Serial0/0/0 is administratively down, line protocol is down (disabled)
Hardware is HD64570
Description: Link to R2
Internet address is 192.168.10.1/30
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set, keepalive set (10 sec)
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/0/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 1158 kilobits/sec
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 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
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=down DSR=down DTR=down RTS=down CTS=down
The show controllers that you attached is the DCE, look at the line in the output:
DCE V.35, clock rate 64000
Have you tried ''no shut'' on both ends of the serial connection?
Have you done a ''no shut'' on both sides of the serial connection?
Is the cable connected to that interface?
Do a ''sh controllers'' to check which interface is the DCE so you can set the clock rate.
The interface shows as administratively down (you need to bring it up with no shut)