On 2009-10-11, at 19:22 , Joe Greco wrote:
(*) In the late 1990's, I heard the most astonishing claims made by
a new
entrant into the Milwaukee ISP market, about how some of the other
ISP's
shared lines between customers and this decreased your speeds.
They had
no clue who I was, so I
On 2009-10-11, at 19:22 , Joe Greco wrote:
(*) In the late 1990's, I heard the most astonishing claims made by
a new
entrant into the Milwaukee ISP market, about how some of the other
ISP's
shared lines between customers and this decreased your speeds.
They had
no clue who I
Maybe I'm way off.. Maybe its view of KISS but as engineers we should
all be looking for the simplest answer. To me they key in Dragos'
post was usage. All physics aside, the warm weather (seasonal) people
go out more, use the internet less. In cold months, we stay in, use
the net more.
On 10-Oct-09, at 10:23 PM, Lorell Hathcock wrote:
Could you point to the documentation?
Well, a friend at one particular large internet exchange says he can
predict
semi-accurately the ambient temperature/ weather in the local city
from the MRTG stats. :-)
The stats he showed me backed
On Oct 9, 2009, at 5:38 PM, Dragos Ruiu wrote:
Well, since it's been documented that internet speed / usage varies
with
the weather (it gets faster when it's sunny, slower when it rains)
I'm sure some
seasonal correlation could be found.
Could you point to the documentation?
I having
jgr...@ns.sol.net
Subject: Re: Does Internet Speed Vary by Season?
Date: Sat, 10 Oct 2009 14:27:07 -0700
On Oct 9, 2009, at 5:38 PM, Dragos Ruiu wrote:
Well, since it's been documented that internet speed / usage varies
with
the weather (it gets faster when it's sunny, slower
-Original Message-
From: Frank A. Coluccio fr...@fttx.org
Date: Sat, 10 Oct 2009 17:32:36
To: Fred Bakerf...@cisco.com
Cc: nanog@nanog.org; jgr...@ns.sol.net
Subject: Re: Does Internet Speed Vary by Season?
Hi Fred.
I think you are referring, in the case of hierarchical synchronous
On Sat, Oct 10, 2009, Fred Baker wrote:
Are we talking about bit rate, which one might expect to be modified
by environmental characteristics and is in fact very tightly
controlled to prevent that, or traffic volume?
Not true with modem type technologies, where the available transmission
Having worked in Operations at various ISPs in rain-riddled Houston for 1.5
decades, I can say that when it rains, water gets into the copper lines in
the ground and caused increased copper-based local loop failures.
That experience leaves me open to believe that where the internet backbone
is
On 7-Oct-09, at 11:22 AM, Scott Morris wrote:
I may be having my wires a little crossed (I'm not an electrical
engineer) but I was always under the impression that manipulation of
the
physical characteristics like that from heat/dampness didn't reduce
the
speed but the quality (like line
.
Just my .02, I'll shut up now.
-Original Message-
From: Dragos Ruiu [mailto:d...@kyx.net]
Sent: Friday, October 09, 2009 8:38 PM
To: s...@emanon.com
Cc: nanog@nanog.org; Joe Greco
Subject: Re: Does Internet Speed Vary by Season?
On 7-Oct-09, at 11:22 AM, Scott Morris wrote:
I may
Hank Nussbacher wrote:
http://www.wired.com/gadgets/miscellaneous/magazine/17-10/ts_burningquestion
It's an interesting theory, that temperature affects overall throughput.
Their assumptions on other conditions that affect bandwidth
consumption are off IMHO. Our own data directly refutes
On Oct 7, 2009, at 6:44 AM, Hank Nussbacher wrote:
http://www.wired.com/gadgets/miscellaneous/magazine/17-10/ts_burningquestion
I'm not sure the effects are so big compared to the actual speed that
they are noticable for the average user. We also don't have any proper
data available but
:- Hank == Hank Nussbacher h...@efes.iucc.ac.il writes:
http://www.wired.com/gadgets/miscellaneous/magazine/17-10/ts_burningquestion
-Hank
There are TXCOs and OXCOs inside equipment for a reason. And rubidium
lamps as well, sometimes.
Seasonal variations in usage from the end
On Oct 7, 2009, at 9:26 AM, Pierfrancesco Caci wrote:
:- Hank == Hank Nussbacher h...@efes.iucc.ac.il writes:
http://www.wired.com/gadgets/miscellaneous/magazine/17-10/ts_burningquestion
-Hank
There are TXCOs and OXCOs inside equipment for a reason. And rubidium
lamps as well, sometimes.
I read the article and the follow up posts and I wonder if we are all
using the same definition for speed here. The article seems to
imply you don't get 6 Mbps on your DSL line in summer because the
copper is hotter and it's harder to push electrons down the link.
That is clearly BS,
http://www.wired.com/gadgets/miscellaneous/magazine/17-10/ts_burningquestion
It used to be that we would notice this, except that it had everything to
do with temperature *and* dampness. In the '90's, it was still quite
common for a lot of older outside plant to be really only voice grade
and
...@hq.speakeasy.net
http://www.speakeasy.net
-Original Message-
From: Joe Greco [mailto:jgr...@ns.sol.net]
Sent: Wednesday, October 07, 2009 9:49 AM
To: Hank Nussbacher
Cc: nanog@nanog.org
Subject: Re: Does Internet Speed Vary by Season?
http://www.wired.com/gadgets/miscellaneous
On Oct 7, 2009, at 10:52 AM, Scott Howard wrote:
On Wed, Oct 7, 2009 at 7:16 AM, Patrick W. Gilmore
patr...@ianai.net wrote:
I read the article and the follow up posts and I wonder if we are
all using the same definition for speed here. The article seems
to imply you don't get 6 Mbps on
No, I did not read the article . . . But, . . .
Yes, DSL speed varies by season . . . or rather, temperature.
But, this is really only the case for _aerial_copper_plant. Buried
plant is nearly the same temperature year round.
Copper pair resistance changes with temperature. And,
Scott Howard wrote:
snip
So you're saying that if I put in an 8Mbps ADSL1 connection, then I'm going
to get a guaranteed 8Mbps point-to-point back to the exchange, regardless of
the quality of my phone line, or the distance from the exchange?
snip
(I'm not saying that the article is
No, I did not read the article . . . But, . . .
Yes, DSL speed varies by season . . . or rather, temperature.
But, this is really only the case for _aerial_copper_plant. Buried
plant is nearly the same temperature year round.
Yes, but it is more susceptible to long-term water
joel jaeggli expunged (joe...@bogus.com):
ADSL systems will retrain to a lower rate as line conditions (SNR)
change for the worse. The attentuation characteristics of a given pair
will change of time due to a number of factor, including but not
certainly limited to physical wear, moisture
I may be having my wires a little crossed (I'm not an electrical
engineer) but I was always under the impression that manipulation of the
physical characteristics like that from heat/dampness didn't reduce the
speed but the quality (like line noise/errors/etc) of the line.
Whether old telco lines
On Wed, 7 Oct 2009 23:12:44 +0800
Adrian Chadd adr...@creative.net.au wrote:
Please don't forget moisture content. DSL speeds may drop during
wet winters because cable pits fill with water. :)
Those with real statistics, please stand up. I know ISPs who run
large DSL infrastructures have these
Quoting Joe Greco (jgr...@ns.sol.net):
http://www.wired.com/gadgets/miscellaneous/magazine/17-10/ts_burningquestion
If I recall correctly, the worst was usually a long, hard cold rain
(hey we're in Wisconsin) after which people who had been getting
solidly high speed modem connects would see
Ignoring the little distractions, and taking a 30,000 ft view on this
topic, my thoughts were always that backbone capacity gets behind,
and backbone takes time to provision. Then it catches up, or leap
frogs demand just in time for a wane in traffic. Try as we may, you
can only predict
I may be having my wires a little crossed (I'm not an electrical
engineer) but I was always under the impression that manipulation of the
physical characteristics like that from heat/dampness didn't reduce the
speed but the quality (like line noise/errors/etc) of the line.
Whether old telco
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