Today's a good day to remind you

Started by Rik, Jul 17, 2009, 11:45:42

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Rik

Jul 17, 2009, 11:45:42
... that thunderstorms and ADSL don't mix very well. Two things can happen. First, the electrical noise generated by the storm can force your line to re-sync at a lower speed, sometimes giving you a profile problem for a few days (in the worst case, it might also trigger an increase in target noise margin, which is much harder to resolve). Second, if there's a lightning strike near you or the exchange, it creates a situation where earth (ground) potential can differ, and that will cause excessive current to travel along the phone line. That current can destroy your router and, in the worst case scenario, your computer.

My advice, during storms, is to power down your router at the mains, then unplug it from the phone socket and wait for the storm to pass.

I always monitor noise margin during a storm, using RouterStats, and keep an eye on this site, which plots the lightning activity:

http://www.ukspeedtraps.co.uk/weather/light0900.htm
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

Simon

#1
Jul 17, 2009, 12:23:24
Thanks for the timely reminder, Rik.  That's exactly what I did yesterday evening, which is why I wasn't here till quite late.  :)
Simon.
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This post reflects my own views, opinions and experience, not those of IDNet.

Sebby

#2
Jul 17, 2009, 13:16:33
Thanks, Rik. Shouldn't it be thunderstorm's and BT's implementation of ADSL that don't work very well together? :evil:

Rik

#3
Jul 17, 2009, 13:17:14
This is also true.  ;D
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

john

#4
Jul 17, 2009, 13:25:15
Good advice Rik, and to make doubly sure I always climb up the the nearby telegraph pole and snip the cable that runs to my house (you've got to be careful to choose the correct one and not accidentally cut one's neighbours like I once did :whistle:). I then use a ladder to get to where it connects to my house and cut it there too. With the cable completely removed I think it's very unlikely that the lightning will jump the 50' gap between my house and the pole.  ;D

When the storm is over I find that there's just enough slack in the cable to lash it back together again using a tried and tested reef knot which doesn't appear to affect the connection too much ;)

coreservers

#5
Jul 17, 2009, 13:51:09
us at sky connect pray for a thunderstorm to blow up the router. for that moment you actually get somewhere near normal speed.  :eek4:
If you truly believe you need to pick a mobile phone that 'says something' about your personality, don't bother. You don't have a personality. A mental illness, maybe - but not a personality

JohnH

#6
Jul 17, 2009, 14:15:15
I think the storm last night must have blown up BT's DLM at my exchange:

Test1 comprises of Best Effort Test:  -provides background information.
    Your DSL connection rate: 4512 kbps(DOWN-STREAM),  448 kbps(UP-STREAM)
    IP profile for your line is - 4500 kbps
    Actual IP throughput achieved during the test was - 3728 kbps

I should have an IP profile of 3500 kbps for a connection rate of 4512 kbps

It's been like that since the power came back at midnight. Maybe another storm and power cut might get the profile up to 5500.  ;D

David

#7
Jul 17, 2009, 14:15:55
I too unplug and also unplug the sky if its really bad I will remove the tv Ariel from the wall socket.....

I will have to learn Johns method its rubbish but sounds great fun  ;D
Many hammer all over the wall and believe that with each blow they hit the nail on the head.

David

#8
Jul 17, 2009, 14:18:08
QuoteI always climb up the the nearby telegraph pole and snip the cable that runs to my house

Shocking John......steps need to be taken  ;) ;D
Many hammer all over the wall and believe that with each blow they hit the nail on the head.

Rik

#9
Jul 17, 2009, 14:47:38
Quote from: john on Jul 17, 2009, 13:25:15
When the storm is over I find that there's just enough slack in the cable to lash it back together again using a tried and tested reef knot which doesn't appear to affect the connection too much ;)

:lol:
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

David

#10
Jul 17, 2009, 14:52:22
Not off topic (makes a change) when I had a problem here with my line a very common thing was found to be causing speed issues which I havnt seen mentioned and that was the phone lines had actually rusted where they connect on the pole so just thought it may interest some !


Ok its not big news but hey ....it is raining again
Many hammer all over the wall and believe that with each blow they hit the nail on the head.

Rik

#11
Jul 17, 2009, 14:52:48
Oh no it's not. ;D
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

David

#12
Jul 17, 2009, 14:57:55
 :hehe: :lmao: :rofl2: Oh yes it is ..........its pouring here my poles getting soaked....



Nice girl  ;)
Many hammer all over the wall and believe that with each blow they hit the nail on the head.

Rik

#13
Jul 17, 2009, 14:59:08
Slippery, though. :)
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

David

#14
Jul 17, 2009, 15:04:46
 :zip: :zip: :no: Dont take me there Rik  ;D
Many hammer all over the wall and believe that with each blow they hit the nail on the head.

Rik

#15
Jul 17, 2009, 15:06:09
I'm at the 'elm, don't worry. ;D
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

David

#16
Jul 17, 2009, 15:45:35
 :hehe: :grn: :karmic:

Root and branch eh !
Many hammer all over the wall and believe that with each blow they hit the nail on the head.

Rik

#17
Jul 17, 2009, 15:48:34
Let's leaf it there. ;D
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

David

#18
Jul 17, 2009, 15:50:34
 :thumb: Atreed  ;D
Many hammer all over the wall and believe that with each blow they hit the nail on the head.

Rik

#19
Jul 17, 2009, 15:55:09
You've just twigged, haven't you. ;D
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

David

#20
Jul 17, 2009, 15:57:59
I had better log this thread  ;D


And its stopped raining so my thingies wont rust after all  >:D
Many hammer all over the wall and believe that with each blow they hit the nail on the head.

Rik

#21
Jul 17, 2009, 16:01:16
That's good. Rusty thingies can be painful. ;D
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

Sebby

#22
Jul 17, 2009, 16:18:23
Quote from: lodge on Jul 17, 2009, 14:15:15
I think the storm last night must have blown up BT's DLM at my exchange:

Test1 comprises of Best Effort Test:  -provides background information.
    Your DSL connection rate: 4512 kbps(DOWN-STREAM),  448 kbps(UP-STREAM)
    IP profile for your line is - 4500 kbps
    Actual IP throughput achieved during the test was - 3728 kbps

I should have an IP profile of 3500 kbps for a connection rate of 4512 kbps

Stuck high profiles do happen, but it's rare. :)

Rik

#23
Jul 17, 2009, 16:19:00
I did have one for a while, but BT noticed.  :'(
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

vitriol

#24
Jul 17, 2009, 19:41:18
Cheers Rik,

It's been raining heavily here in Durham all day, just logged on to find my sync has dropped from 8128 to 7648 ish, so thanks for the reminder.  How long will it take to recover do you think?
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