01-26-2009 09:02 AM
Hello
I have had this on going problem with a Cisco 1801. It loses its connection to the ISP about 4-5 times a day. I have looked at other posts and tried the recommendations but it still happens.
Can you help?
1801#sh dsl int atm 0
ATM0
Alcatel 20190 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: 0x03 0x2
Vendor ID: 'STMI' 'TSTC'
Vendor Specific: 0x0000 0x0000
Vendor Country: 0x0F 0xB5
Chip ID: C196 (0)
DFE BOM: DFE3.0 Annex A (1)
Capacity Used: 100% 53%
Noise Margin: 3.0 dB 23.0 dB
Output Power: 19.5 dBm 12.5 dBm
Attenuation: 48.0 dB 24.0 dB
FEC ES Errors: 0 0
ES Errors: 2883 42
SES Errors: 0 0
LOSES Errors: 0 0
UES Errors: 0 0
Defect Status: None None
Last Fail Code: None
Watchdog Counter: 0xCF
Watchdog Resets: 0
Selftest Result: 0x00
Subfunction: 0x00
Interrupts: 4207 (0 spurious)
PHY Access Err: 0
Activations: 16
LED Status: ON
LED On Time: 100
LED Off Time: 100
Init FW: init_3.0.33_nobist.bin
Operation FW: AMR-3.0.033.bin
FW Source: external
FW Version: 3.0.33
Interleave Fast Interleave Fast
Speed (kbps): 3968 0 448 0
Cells: 19357 0 16389003 0
Reed-Solomon EC: 43465 0 26 0
CRC Errors: 0 0 5 0
Header Errors: 0 0 5 0
Total BER: 0E-0 0E-0
Leakage Average BER: 0E-0 0E-0
ATU-R (DS) ATU-C (US)
Bitswap: enabled enabled
Bitswap success: 0 0
Bitswap failure: 0 0
LOM Monitoring : Disabled
DMT Bits Per Bin
000: 0 0 0 0 0 0 2 5 6 7 7 7 8 8 8 8
010: 8 8 7 7 7 7 7 6 6 6 5 5 4 3 0 0
020: 0 0 0 0 0 A A B B B B B B B 8 B
030: B B B B B B B B B B B A B B A A
040: 0 A A A A 2 A A A A A A A A A A
050: A A A A 9 9 9 9 9 A A 9 9 9 9 9
060: A A A A A A A A A 9 A A 9 9 9 9
070: 9 9 9 9 9 9 9 9 9 9 9 7 9 7 8 7
080: 7 4 4 6 7 5 5 5 4 7 5 8 6 8 6 8
090: 5 8 4 7 6 7 6 7 6 7 6 6 6 5 5 4
0A0: 0 0 3 4 5 5 6 0 6 5 5 2 5 4 5 4
0B0: 3 2 2 2 3 4 4 2 2 3 2 2 2 3 3 4
0C0: 0 4 2 4 4 3 2 2 2 2 2 2 2 2 2 2
0D0: 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0E0: 0 0 0 0 0 0 0 0 0 2 2 2 2 2 2 0
0F0: 0 0 2 2 0 0 0 0 0 0 0 0 0 0 0 0
DSL: Training log buffer capability is not enabled
sh log
000230: Jan 25 13:13:15.378 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0, changed state to down
000231: Jan 25 13:13:37.998 UTC: %LINK-3-UPDOWN: Interface ATM0, changed state to up
02-01-2009 10:20 AM
This is bug a bug.
Tracebacks on show dsl int atm0 when ADSL line is flapping.
c1801 show dsl int atm 0 has FW version = 0x0000
Show dsl int atm0 is not updated when atm interface is shut down
02-01-2009 11:09 AM
First of all it seems the line is severely attenuated:
Capacity Used: 100% 53%
Noise Margin: 3.0 dB 23.0 dB
Attenuation: 48.0 dB 24.0 dB
FEC ES Errors: 0 0
ES Errors: 2883 42
If you could have telco select a better pair that would probably help. If you have a support contract, there is newer FW that the one you're using via ftp, under /cisco/access/800. I'm not sure if that would help anyway.
02-04-2009 01:55 AM
Hello and ty for the reply
I have downloaded and using the latest modem FW.
FW Version: 3.0.33
but this has not helped with the number of drops.
I will contact the telco to see if there is anything they can do to help.
i did try using a basic netgear adsl router between the 10th and 16th and as you can see there were no drops. As soon as i put the cisco back on, it started dropping again. This graph was supplied to me from the ISP.
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