[mdlug] Network Slowdown Troubleshooting/Netgear WNDR3700 Free To Good Home

[Stan Green]

I don't think you have a latency issue ( See for more on latency: 
http://en.wikipedia.org/wiki/Latency_(engineering)

Also, I'm not clear on what you mean by "my router would stop the downloads". 
The router only knows packets, it does not know what is a download and what is 
an email. (Other than they are on different ports.) It is the client program 
that is performing the download. It may timeout if it is not getting a response 
from the server.

Since all is fine when you plug into the modem directly, this would suggest the 
DSL is fine. You stated you have a router and a switch, so did you try plugging 
directly into the router? If that works fine, then the issue may be your 
switch.  If plugging directly into the router show the same download issue, I 
would suspect the router is the issue.  You can test the switch my pluggin it 
directly into the modem.  If plugging directly into the router show the same 
download issue, I would suspect the router is the issue. 

The bottom line is good troubleshooting is about isolating to smaller components 
in order to find the one that is not working.

HTH
Stan

On Saturday 26 November 2011 11:26:06 am Peter Bart wrote:
> Good Morning Everyone,
> 	I have a small home network made up of an AT&T Uverse modem, a
> 	router, and a switch. What I found after much trial and error;
> 	by accident; is that my router would stop downloads after about
> 	5-8 minutes and just hang. I found that out trying to get
> 	openSUSE 12.1 downloaded. Up to that point I would get
> 	complaints about youtube videos not being able to be played w/o
> 	reloading and a general sense something wasn't quite right. My
> 	download went lickety split when I plugged into the ethernet
> 	port on the modem, bypassing the router. What I found was the
> 	the download started and quickly spooled up to 11-12Mbs; my
> 	connection speed; then around 5-8 minutes in sagged to 5-8Mbs
> 	and then back up to 11-12Mbs. About the same time frame my
> 	router would stop the download. Of course when I check my
> 	bandwidth speed it was allways good for those few seconds the
> 	test was running.
>
> 	I have several questions. Is what I'm experiencing called
> 	latency? Or am I having a throughput issue? Am I completely
> 	off? Is there some relatively easy method for detecting this
> 	type of issue besides trial and error?