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Re: [OCLUG-Tech] DSL Packet Loss

On Tue, Oct 28, 2008 at 06:08:51PM +0100, Damian Gerow wrote:

> I took a closer look, and found that the problems actually started on Wednesday.
> I'm so glad I finally got cacti up and running, now I just need it to start 
> graphing retransmits and errors as well...

Ian! Allen sent me some interesting graphs from a SpeedTouch. He's on
NCF/TekSavvy and in my neighbourhood.
  
> > The remote host (first hop) can be 206.248.154.101 or 102, 103, 105,
> > or 120, which it is right now. It seems to have cleared up for the most
> > part over the weekend, although with all the rain Saturday my connection was
> >  extremely slow (not much better than dialup) with many many CRC errors
> > (an urelated problem?).
> 
> Right now, I'm actually suspecting that the backhaul from Ottawa into Toronto -- 
> where Bell hands off to TekSavvy -- is overloaded.  I'm not 100% confident this
> is the case, but it's the most plausible solution I've come across.  Too bad your
> problem seems to have cleared up, as mine's ongoing.

Too bad yours is ongoing. 
 
> On what layer were you seeing CRC errors?  Were they showing up on the modem, 
> on your gateway, on the client machines...?

On the modem. SpeedTouch, "adsl info". They show up clearly in Ian!'s
graphs. 
 
> > > However, when connected using Bell's test account,
> > > I'm seeing zero packet
> > > loss (and, unsurprisingly, slightly better latency).
> > 
> > How does one get one of those?
> 
> I'm not sure how kosher it is 
>
> username: ***** 
> password: *****

I'll keep this in mind for the next time.  

> NB: I doubt you'll have access to the Internet with this.

Too bad. I could save a few bucks (I'm on a fixed income). :-) 

Howard E.


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