Bonded ADSL - Lots of CRC and header errors

Unanswered Question
Jul 21st, 2008

Hi All

Getting intermittent failures using a 1760 router with 2 adsl wics.

Looks to me line like one of the lines has a noise problem? Perhaps someone could confirm this for me?

sh dsl int atm 0/0

ATM0/0

Alcatel 20150 chipset information

ATU-R (DS) ATU-C (US)

Modem Status: Showtime (DMTDSL_SHOWTIME)

DSL Mode: ITU G.992.1 (G.DMT) Annex A

ITU STD NUM: 0x01 0x1

Vendor ID: 'ALCB' 'TSTC'

Vendor Specific: 0x0000 0x0000

Vendor Country: 0x00 0xB5

Capacity Used: 34% 93%

Noise Margin: 11.5 dB 5.0 dB

Output Power: 20.0 dBm 10.5 dBm

Attenuation: 62.0 dB 30.5 dB

Defect Status: None None

Last Fail Code: Handshake or init message invalid or had bad CRC

Selftest Result: 0x00

Subfunction: 0x15

Interrupts: 1370 (0 spurious)

PHY Access Err: 0

Activations: 6

LED Status: ON

LED On Time: 100

LED Off Time: 100

Init FW: embedded

Operation FW: embedded

SW Version: 3.8131

FW Version: 0x1A04

Interleave Fast Interleave Fast

Speed (kbps): 0 576 0 160

Cells: 0 3378 0 593597

Reed-Solomon EC: 0 0 28 31

CRC Errors: 0 2394 27 2183

Header Errors: 0 1235 39 517

Bit Errors: 0 0

BER Valid sec: 0 0

BER Invalid sec: 0 0

and ADSL 1/0

router#show dsl int atm 1/0

ATM1/0

Alcatel 20150 chipset information

ATU-R (DS) ATU-C (US)

Modem Status: Showtime (DMTDSL_SHOWTIME)

DSL Mode: ITU G.992.1 (G.DMT) Annex A

ITU STD NUM: 0x01 0x1

Vendor ID: 'ALCB' 'TSTC'

Vendor Specific: 0x0000 0x0000

Vendor Country: 0x00 0xB5

Capacity Used: 99% 61%

Noise Margin: 4.0 dB 21.0 dB

Output Power: 20.0 dBm 12.0 dBm

Attenuation: 20.0 dB 10.0 dB

Defect Status: None None

Last Fail Code: None

Selftest Result: 0x00

Subfunction: 0x15

Interrupts: 2658 (0 spurious)

PHY Access Err: 0

Activations: 2

LED Status: ON

LED On Time: 100

LED Off Time: 100

Init FW: embedded

Operation FW: embedded

SW Version: 3.8131

FW Version: 0x1A04

Interleave Fast Interleave Fast

Speed (kbps): 6848 0 448 0

Cells: 50919 0 2505436 0

Reed-Solomon EC: 346 0 0 0

CRC Errors: 4 0 0 0

Header Errors: 3 0 0 0

Bit Errors: 0 0

BER Valid sec: 0 0

BER Invalid sec: 0 0

Any ideas? Perhaps a filter problem?

Any help would be appreciated.

Anthony

I have this problem too.
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