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New Member

Are these layer 1 or layer 2 error?

I entered the following 2 commands, there is no input error on atm 0/0/0, only 92 crc, but there are lot of crc error on sh dsl atm 0/0/0, are these layer 1 or layer 2 error?

router#sh int atm 0/0/0

ATM0/0/0 is up, line protocol is up

Queueing strategy: Per VC Queueing

30 second input rate 0 bits/sec, 0 packets/sec

30 second output rate 0 bits/sec, 0 packets/sec

431559 packets input, 167730219 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 92 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

395828 packets output, 63240991 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

======

router#sh dsl int atm 0/0/0

Interleave Fast Interleave Fast

Speed (kbps): 0 3008 0 512

Cells: 0 22134693 0 1794469949

Reed-Solomon EC: 0 0 136 75

CRC Errors: 0 10692 175 80

Header Errors: 0 26306 192 138

Total BER: 0E-0 4129E-8

Leakage Average BER: 0E-0 1908E-8

3 REPLIES
Hall of Fame Super Gold

Re: Are these layer 1 or layer 2 error?

Layer 1 errors. The circuit is not very clean, but probably acceptable. Which DSL FW are you running, from show dsl interface ?

New Member

Re: Are these layer 1 or layer 2 error?

What is that header error? I thought it was the layer 2 header.

Init FW: init_AMR-R-2.5.042_no_bist.bin

Operation FW: AMR-R-2.5.042.bin

FW Source: embedded

FW Version: 2.5.42

Hall of Fame Super Gold

Re: Are these layer 1 or layer 2 error?

Try upgrading to FW 3-0-33 from

ftp://ftp.cisco.com/pub/access/800

check docfile for instructions.

T

here is CRC in Adls encapsulation, low level.

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