I'm trying to turn up a point-to-point and ping across it to another Cisco 1720. The serial interface 0 has been going up and down on me. I've figured out enough of the syntax to start the serial interface, but still can't ping across. AT&T says the circuit is up.
IP of the router is 192.168.2.244 pinging to 192.168.3.105
ideal-1720-MG(config-if)#no shut
ideal-1720-MG(config-if)#show interface serial 0
^
% Invalid input detected at '^' marker.
ideal-1720-MG(config-if)#exit
ideal-1720-MG(config)#exit
ideal-1720-MG#show interface seri 0
Serial0 is up, line protocol is up
Hardware is PQUICC with Fractional T1 CSU/DSU
Internet address is 10.40.30.1/30
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 11/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: Class-based queueing
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/4/256 (active/max active/max total)
Reserved Conversations 1/1 (allocated/max allocated)
Available Bandwidth 649 kilobits/sec
5 minute input rate 71000 bits/sec, 141 packets/sec
5 minute output rate 2000 bits/sec, 1 packets/sec
122440 packets input, 7422647 bytes, 0 no buffer
Received 95 broadcasts, 0 runts, 3 giants, 0 throttles
349 input errors, 29 CRC, 275 frame, 0 overrun, 0 ignored, 44 abort
12510 packets output, 1509293 bytes, 0 underruns
0 output errors, 0 collisions, 72 interface resets
0 output buffer failures, 0 output buffers swapped out
7 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
ideal-1720-MG#ping 192.168.3.105
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.105, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
ideal-1720-MG#
When pinging from my laptop I get this:
Pinging 192.168.3.105 with 32 bytes of data:
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Request timed out.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
IP of the router is 192.168.2.244 pinging to 192.168.3.105
ideal-1720-MG(config-if)#no shut
ideal-1720-MG(config-if)#show interface serial 0
^
% Invalid input detected at '^' marker.
ideal-1720-MG(config-if)#exit
ideal-1720-MG(config)#exit
ideal-1720-MG#show interface seri 0
Serial0 is up, line protocol is up
Hardware is PQUICC with Fractional T1 CSU/DSU
Internet address is 10.40.30.1/30
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 11/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: Class-based queueing
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/4/256 (active/max active/max total)
Reserved Conversations 1/1 (allocated/max allocated)
Available Bandwidth 649 kilobits/sec
5 minute input rate 71000 bits/sec, 141 packets/sec
5 minute output rate 2000 bits/sec, 1 packets/sec
122440 packets input, 7422647 bytes, 0 no buffer
Received 95 broadcasts, 0 runts, 3 giants, 0 throttles
349 input errors, 29 CRC, 275 frame, 0 overrun, 0 ignored, 44 abort
12510 packets output, 1509293 bytes, 0 underruns
0 output errors, 0 collisions, 72 interface resets
0 output buffer failures, 0 output buffers swapped out
7 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
ideal-1720-MG#ping 192.168.3.105
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.3.105, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
ideal-1720-MG#
When pinging from my laptop I get this:
Pinging 192.168.3.105 with 32 bytes of data:
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Request timed out.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 192.168.2.244: TTL expired in transit.
Reply from 192.168.2.244: TTL expired in transit.