This is a classic example of QoS
usage.
The VPN connection doesn't experience the problem because the
QoS settings for VPN would have a no throttling policy attached.
SSH would typically be non-throttled as well.
On 02/17/2013 08:02 PM, Derek Trotter wrote:
For several weeks I've had a problem
with my earthlink dsl service. Anytime I'm doing something
that uses all or most of my downstream bandwidth, all data
coming into or going out of my apartment stops. At the same
time I'm downloading something a series of updates for kubuntu
and listening to streaming audio, both stop. If I'm using my
windows box to download something else, that too stops. After
a pause lasting anywhere from a second or two to 15 or 20
seconds, the downloads resume. A few seconds later, there's
another pause. This cycle repeats itself until the download
is complete or I give up.
Each computer has two nics. The problem persists no matter
which one either machine is using for it's internet
connection. If I remove the router, connect the dsl modem
directly to either computer, the problem persists. I even
went to the closet and got the modem when I had dsl from
AT&T. I set it to work with the earthlink service and the
problem persists.
Saturday an AT&T technician was here, checked the line
from the cord that plugs into the dsl modem and says the line
is in excellent shape and noise levels are very low. This is
not surprising since I live less than 1/4 mile from AT&T's
local office where all their equipment is.
Since I've tried two computers, 4 nics, two dsl modems and
removed the router, and the problem still persists, I'm
guessing the problem is somewhere at earthlink's end.
Tonight at 21:30 EST, an earthlink
tech support person from somewhere in India called to tell me
they had fixed the problem. While he was on the phone I tried
downloading something else and guess what. The problem was
not fixed. As near as I can tell, the dsl connection does not
go down. The earthlink people say it stays up. The lights on
the modem that are on when the connection is up never go off
or blink.
The man asks me what dns settings I use. I tell him 8.8.8.8 and
8.8.4.4. He says I should try earthlink's dns servers. To
humor him I changed the settings on the windows box and guess
what. The problem did not go away.
Maybe I'm missing something, but it's my understanding that once
the download has begun, that dns has already done it's job and
has no further role to play. One more thing. If I use a VPN
connection, I have no problem with it.
Any idea what's going on? If you were to venture a guess, would
you say the problem is at my place, with AT&T or with
Earthlink?
Thanks
Derek
--
"I get my copy of the daily paper, look at the obituaries page, and if I’m not there, I carry on as usual."
Patrick Moore
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