serial interface down

[greenhand]

Hi, I'm study for the CCNA exam and I bought a used 2503 router for some practise. Both serial interface are down and I tried to bring them up using "Router(config-if)# no shutdown" command, but it doesnt'n work. could any one give me a hint on this ?

I don't have a T1 line at home, if I already used AUI port connecting to a LAN, is there any way to connect a home DSL connection to the router serial interface?

sorry for the very elementary question, I'm really a newbie in cisco routers. thanks a lot for your help.

below is the output for serial0.

****************************

Serial0 is down, line protocol is down
Hardware is HD64570
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback 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)
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, 697 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=down DSR=down DTR=down RTS=down CTS=down
************************

 

[rburke]

No the only way you could use the 2503 to connect to your DSL would be if you got another 2501/2503 and connected them through a DCE/DTE serial cable. Or if you wanted to pick up another router to play with you could get a 2514 which has 2 Ethernet interfaces which would allow one to connect to the LAN and one to the DSL. (I've used a 2514 for that in the past and it works great).

Hope this helps.

Burke