From: Sam Meftahi (SAF@sonofon.dk)
Date: Wed Mar 03 2004 - 04:10:53 GMT-3
1-Try changing cable.
2-Change port and obviously move the config to new port.
This should highlight the culprit
Good luck
Sam
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Ahmed Mustafa
Sent: 3. March 2004 08:07
To: ccielab@groupstudy.com
Subject: Layer 2 problem !!!
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
****************************************************************************
*
*************************************
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