Is AT&T Screwing With Me Again?

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On practically every website I go to, there is short burst of network
activity, then it drops down to zilch for 3-5 seconds at a time.  Then
the rest of the page loads in one swoop without any further delays.
I'm watching this happen on the Network Meter Gadget and through a
couple of the Windows 7 built-in's.

Another oddity is that a torrent will be downloading at 66% of my max
speed, but as soon as I go to a web site using my browser, all network
activity ceases for 4-5 seconds right after the browser contacts the
website (after DNS resolution) and downloading that.  

Which makes me think that AT&T (DSL) is definitely squelching my
network connection when it sees HTTP activity afetr a lull.  FTP,
Torrent, and NNTP traffic does not seem affected.  But as soon
something up the line sees HTTP traffic... it inserts an artificial
annoying delay (to try and get me to upgrade speeds again).  At least
that's my theory.  And it's not like they haven't played games like
this before.

Does this sound plausible, or could there be another valid
explanation?

Windows 7, Firefox 12.0 (Ghostery, Adblock), WRT54G, Siemens 4100B,
AT&T DSL 3Mbps.

TIA.

-sw

Re: Is AT&T Screwing With Me Again?
wrote:

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IPv6 day was Weds.  I'm getting calls for slow or erratic web browsing
on a few specific sites.  All of them seem to be getting things fixed.
<http://www.linkyourhouse.com/networking/world-ipv6-day-begins-today-websites-start-your-engines.html
I'm also having problems with old firmware on some routers.  Ancient
firmware on Netgear WGR614 is the only one that I'm sure was a
problem.


--
Jeff Liebermann     jeffl@cruzio.com
150 Felker St #D    http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann     AE6KS    831-336-2558

Re: Is AT&T Screwing With Me Again?
Jeff Liebermann (for it is he) wrote:

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A packet capture demonstrating the problem would be useful. About 15 seconds
worth should do.

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I can't think how an IPv6 misconfiguration would cause the symptoms
described. Then again, I can't think what failure mode would cause the
symptoms described, either. Misconfigured traffic shaping could be one
cause.

--
 <http://ale.cx/ (AIM:troffasky) (UnSoEsNpEaTm@ale.cx)
 20:01:38 up 148 days, 22:34,  6 users,  load average: 0.72, 1.74, 1.02
 Qua illic est reprehendit, illic est a vindicatum


Re: Is AT&T Screwing With Me Again?
wrote:

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I haven't seen this issue myself, but it sort of sounds like an IPv6
address is being attempted and has to time out before the requesting
systems falls back to IPv4. If so, I don't know if the delay is
happening at the DNS level or at the host level, but a packet cap
should help.


Re: Is AT&T Screwing With Me Again?
On Fri, 08 Jun 2012 15:10:28 -0500, Char Jackson wrote:

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Packet Capture...  No habla English.  What tool would I use for that?

-sw

Re: Is AT&T Screwing With Me Again?
wrote:

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Wireshark is the usual tool. <http://www.wireshark.org/

Some background info: <http://en.wikipedia.org/wiki/Wireshark


Re: Is AT&T Screwing With Me Again?

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Be careful not to run wireshark while you are parked on a wifi channel
in Kismet. You might accidentally decode wifi traffic, AKA "pulling a
google".


Re: Is AT&T Screwing With Me Again?
wrote:

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Neither can I, but it won't hurt to check for a router or client
machine problem by substituting another router or computer.  I managed
to create a mess on own machine because of residue from the last IPv6
test day that I forgot to clean out.  The IPv6 proxy/gateway that I
was using went comatose.  My client was set to first try IPv6 before
IPv4.  The result was a long (about 20 second) delay every time it had
to lookup any address.

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I'm still getting calls for home router issues, most of which I solve
with a reboot, but some that appear to need new firmware, or if I'm
greedy, a new router.

For the conspiracy buffs:
<http://www.gigo.com/wiki/Apple_Is_Sabotaging_IPv6

--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558
# http://802.11junk.com jeffl@cruzio.com
# http://www.LearnByDestroying.com               AE6KS

Re: Is AT&T Screwing With Me Again?
On Fri, 08 Jun 2012 09:05:54 -0700, Jeff Liebermann wrote:

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<http://www.linkyourhouse.com/networking/world-ipv6-day-begins-today-websites-start-your-engines.html
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I've been having this problem for about a month, but it has been
getting more consistent.  At first I thought it was my browser, but I
can replicate it with IE as well.  I suppose it could be something in
my router as well.  I'll try it without the router.

-sw

Re: Is AT&T Screwing With Me Again?
wrote:

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Good idea.

Are you still on the Comcast 1Mbit/sec cheapo service?  I've had
problems with that service.  Until maybe a month ago, they were
sending bursts of high speed data, followed by long periods of
nothing, and then another burst.  The average throughput was about
1Mbits/sec.  That caused fatal problems for VoIP and streaming, so
they apparently (my guess) evened out the bursts into something that
resembles a flow.  Now, VoIP and even Netflix works.  I just noticed
that Comcast no longer offers their 1Mbit/sec plan.

If you call Comcast to complain, you might ask them about their
$10/month plan:
<http://www.internetessentials.com

--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558
# http://802.11junk.com jeffl@cruzio.com
# http://www.LearnByDestroying.com               AE6KS

Re: Is AT&T Screwing With Me Again?
On Fri, 08 Jun 2012 20:15:35 -0700, Jeff Liebermann wrote:

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AT&T 3Mbps.  When I complained about the last issue they upgraded me
to 3.0 for the same price as 756Kbps.

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That's interesting.  Not available to me in Central Texas unless I
borrow some kids.  Yeah, right!

-sw

Re: Is AT&T Screwing With Me Again?

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A while back ATT, Verizon, TW Comcast and perhaps some others had a PR party
about that.  Seems Comcast is the only one that is moving forward and has
limited the availability to folk with kids on the school lunch program
(original announcement - as I recall- had broader and less restrictive
qualifications)




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