Re: ATM interface troubleshooting question. [7:2249]

[[EMAIL PROTECTED] (Katson Yeung)]

I put that router connected back-to-back with another router and
discover no cell loss... Only two things are diff from the lab.

1. It is now switched thru telco. (not back-to-back)
2. It is not the same MM fibre at both router to the telco ATM port.


On 27 Apr 2001 17:09:00 -0400, [EMAIL PROTECTED] ("Daniel Cotts")
wrote:

>If you can take the link down it might be useful to do some loopbacks to see
>if you can isolate a link or equipment failure. I seem to remember seeing a
>procedure for that in the CCIE All-in One lab book.
>
>> -----Original Message-----
>> From: [EMAIL PROTECTED] (Katson Yeung) 
>> [mailto:[EMAIL PROTECTED]]
>> Sent: Friday, April 27, 2001 8:54 AM
>> To: [EMAIL PROTECTED]
>> Subject: ATM interface troubleshooting question. [7:2249]
>> 
>> 
>> Dear all,
>> 
>> My old 7507 is having a minor problem.... it is 12.0.16GD, RSP2 with
>> 64M ram and the ATM card is an AIP. I have only one VC associate with
>> this ATM port.
>> 
>> I found quite a number of input errors (CRC and Frames)... how can I
>> know the source of that problem?? Is it the cell level, or the frame
>> level problem?
>> 
>> 
>> See below show interface output:
>> 
>> 
>> ATM0/0 is up, line protocol is up 
>>   Hardware is cxBus ATM
>>   MTU 4470 bytes, sub MTU 4470, BW 155520 Kbit, DLY 80 usec, rely
>> 255/255, load 8/255
>>   Encapsulation ATM, loopback not set, keepalive not supported 
>>   Encapsulation(s): AAL5, PVC mode
>>   256 TX buffers, 256 RX buffers,
>>   2048 maximum active VCs, 1024 VCs per VP, 1 current VCCs
>>   VC idle disconnect time: 300 seconds
>>   Last input 00:00:00, output 00:00:00, output hang never
>>   Last clearing of "show interface" counters 3d10h
>>   Queueing strategy: fifo
>>   Output queue 0/40, 0 drops; input queue 1/75, 40 drops
>>   5 minute input rate 34782000 bits/sec, 4564 packets/sec
>>   5 minute output rate 5307000 bits/sec, 3372 packets/sec
>>      1174284787 packets input, 1013959162 bytes, 0 no buffer
>>      Received 0 broadcasts, 0 runts, 0 giants, 11 throttles
>>      13076769 input errors, 13054514 CRC, 22255 frame, 0 overrun, 0
>> ignored, 0 abort
>>      893230791 packets output, 346650156 bytes, 0 underruns
>>      0 output errors, 0 collisions, 0 interface resets
>>      0 output buffer failures, 0 output buffers swapped out
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