[c-nsp] 827 noise margin

Peter Hicks peter.hicks at poggs.co.uk
Fri May 15 11:27:54 EDT 2009

Hi Dan

Dan Letkeman wrote:
> I have an 827 router that seems to have noise issue's after a while
> and i'm wondering if it is the device or the line? The noise margin
> drops down after a week or two of use. If I restart the router the
> noise margin is back up to about 7 dB.
What happens if you shut/no shut the ATM interface?  What does the DMT 
bin loading table (enable the training log on ATM0, show dsl int atm0) 
look like before and after retraining?  Are you getting noise on 
specific bins?

I have a script that you can run on a Linux system that will dump 
5-second readings for the US and DS SNR, speed, and number of ESes and 
present it graphically - I can make this available to you if you like.


More information about the cisco-nsp mailing list