From: Ahmed Mustafa (ahmed.mustafa@sbcglobal.net)
Date: Wed Mar 03 2004 - 04:06:39 GMT-3
Do you guys see any problem with the below output. R2 and R3 are connected
back to back. DCE end is attached to R2 and configured with clock rate 64000,
however I can't bring the layer 2 up. R3 keep flapping its interface up and
down every 30-40 seconds. What is the easiest way to findout whethere there
is a problem with the serial port itself or a problem with a cable.
Regards,
Ahmed
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Rack1R2#show int s1
Serial1 is up, line protocol is down
Hardware is HD64570
Internet address is 136.1.23.2/24
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 00:00:00, 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: 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 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
17 packets output, 374 bytes, 0 underruns
0 output errors, 0 collisions, 7 interface resets
0 output buffer failures, 0 output buffers swapped out
14 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
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*************************************
Rack1R3#show int s0
Serial0 is up, line protocol is down
Hardware is HD64570
Internet address is 136.1.23.3/24
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 00:00:05, output 00:00:19, output hang never
Last clearing of "show interface" counters 00:01:59
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 4/1000/64/0 (size/max total/threshold/drops)
Conversations 2/2/256 (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
12 packets input, 264 bytes, 0 no buffer
Received 12 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
9 packets output, 718 bytes, 0 underruns
0 output errors, 0 collisions, 6 interface resets
0 output buffer failures, 0 output buffers swapped out
8 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
This archive was generated by hypermail 2.1.4 : Thu Apr 01 2004 - 08:15:13 GMT-3