877 Adsl Interface up/down

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May 20th, 2008
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Hi, I have an ADSL Cisco 877. Intially I have the usual problem with needing to update the firmware due to dslam inter op issues. I have applied firmware 3.010 and it now works fine. Only issues is that since swapping in the router it looks like it changing sync rate every 2 hours - which is a pain because I use dynamic dns. I used to use a 3Com which was quite stable. Do you just think this is an DSlam re training? Is there anyway I can see from my 877 whats happening. Sys log just says atm0 up/down and virtual access up/down. Seems strange it's happening every two hours during the day.

Correct Answer by paolo bevilacqua about 9 years 6 days ago

Check this out to see what is included in what:


Hope this helps, please rate post if it does!

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Overall Rating: 5 (1 ratings)
rasoftware Tue, 05/20/2008 - 10:07
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Many thanks - don't know how I missed that one. I have applied the update - will let you know if things settle down.

I thought I read somewhere that the firmware was included in the IOS version? Not sure if thats corrent. I am running (C870-ADVIPSERVICESK9-M), Version 12.4(4)T8


rasoftware Tue, 05/20/2008 - 10:17
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thanks thats a very useful link.

Fingers crossed the later firmware settles things down.

paolo bevilacqua Tue, 05/20/2008 - 10:21
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It should. Thanks for the nice rating and good luck!

rasoftware Wed, 05/28/2008 - 06:08
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Hi again. Being running 3.0.33 for last 7 days but have had 27 activations during that time. I am running IOS Version 12.4(4)T8 which isn't an officially supported with firmware 3.0.33 I think.

The ISP says it is my router which is casuing this.

Output of sh dsl int atm0


Alcatel 20190 chipset information


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

Capacity Used: 99% 53%

Noise Margin: 12.0 dB 23.0 dB

Output Power: 20.0 dBm 12.5 dBm

Attenuation: 37.0 dB 17.5 dB

Defect Status: None None

Last Fail Code: None

Watchdog Counter: 0xEB

Watchdog Resets: 0

Selftest Result: 0x00

Subfunction: 0x00

Interrupts: 8370 (0 spurious)

PHY Access Err: 0

Activations: 27

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 Version: 3.033

Interleave Fast Interleave Fast

Speed (kbps): 4480 0 448 0

Cells: 37951 0 8140186 0

Reed-Solomon EC: 1519 0 42 1

CRC Errors: 145 0 94 5

Header Errors: 52 0 1 1

paolo bevilacqua Wed, 05/28/2008 - 06:24
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There is a newer FW, but requires download access to CCO. If you have that, is the under /cisco/access/800 via ftp.

rasoftware Wed, 05/28/2008 - 06:47
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Thanks for the reply. What verion is that - i have a cco but can't see any firmware just IOS updates?

Do you think its the router rather than the ISP? The sync rate changes each time - but only by a few 100 kbs.

paolo bevilacqua Wed, 05/28/2008 - 10:09
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Try 3-0-39. You might have a longer / marginal circuit.


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