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OT: Networking Dropping Out

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  OT: Networking Dropping Out rickman <gnuarm@gmail.com> - 2017-05-19 00:02 -0400
    Re: OT: Networking Dropping Out Martin Riddle <martin_ridd@verizon.net> - 2017-05-19 07:06 -0400
      Re: OT: Networking Dropping Out Martin Brown <'''newspam'''@nezumi.demon.co.uk> - 2017-05-19 12:38 +0100
        Re: OT: Networking Dropping Out makolber@yahoo.com - 2017-05-19 06:57 -0700
        Re: OT: Networking Dropping Out rickman <gnuarm@gmail.com> - 2017-05-19 14:51 -0400
          Re: OT: Networking Dropping Out Jon Elson <jmelson@wustl.edu> - 2017-05-19 15:02 -0500
            Re: OT: Networking Dropping Out rickman <gnuarm@gmail.com> - 2017-05-19 16:53 -0400
              Re: OT: Networking Dropping Out Przemek Klosowski <przemek@tux.dot.org> - 2017-05-19 23:30 +0000
                Re: OT: Networking Dropping Out rickman <gnuarm@gmail.com> - 2017-05-19 22:05 -0400
              Re: OT: Networking Dropping Out Jon Elson <elson@pico-systems.com> - 2017-05-19 21:26 -0500
                Re: OT: Networking Dropping Out rickman <gnuarm@gmail.com> - 2017-05-19 23:00 -0400
          Re: OT: Networking Dropping Out jrwalliker@gmail.com - 2017-05-19 14:59 -0700
          Re: OT: Networking Dropping Out Martin Brown <'''newspam'''@nezumi.demon.co.uk> - 2017-05-20 08:41 +0100
            Re: OT: Networking Dropping Out rickman <gnuarm@gmail.com> - 2017-05-20 04:11 -0400
      Re: OT: Networking Dropping Out Jon Elson <jmelson@wustl.edu> - 2017-05-19 14:55 -0500
    Re: OT: Networking Dropping Out Jasen Betts <jasen@xnet.co.nz> - 2017-05-25 04:54 +0000
      Re: OT: Networking Dropping Out rickman <gnuarm@gmail.com> - 2017-05-25 15:21 -0400
        Re: OT: Networking Dropping Out Jasen Betts <jasen@xnet.co.nz> - 2017-05-26 05:50 +0000
          Re: OT: Networking Dropping Out rickman <gnuarm@gmail.com> - 2017-05-26 03:46 -0400

#460899 — OT: Networking Dropping Out

I've been having a problem with my networking periodically.  But it only 
happens in one location.  When I am at other places I don't see it happen.

Because the Internet provider here is not so perfect, I keep a command 
window open with a 1 second ping running on 8.8.8.8 which is a major 
server that should never go down.  The symptom I see is this ping starts 
timing out or at least the times go way up from 20-40 ms range to quad 
digits.  This is concurrent with all the web apps losing access to the 
Internet, browser, email, newsreader...

I originally thought it was the ISP since I don't see the problem when I 
am at other locations.  But I opened browser tabs to the router and 
modem only to find I have no access to them either while this is 
happening.  So it must be something in my PC or possibly the router. 
When the connection is restored the router is in the same context it was 
before the disruption, so the router isn't rebooting.  The wifi 
connection is 5 of 5 bars.

This condition can last a few seconds to a few minutes.  Sometimes this 
seems to be triggered by clicking a link in a browser, but it often 
happens randomly.

I'm pretty much at a loss to figure out what is causing this.  Any 
suggestions?  Is there something in the PC that could cause this?

I guess I do have one idea, buy a new router and see if that is the 
problem.  This router is 15 years old, so a new one wouldn't be a total 
waste.  I'm really surprised to see some of the fancy dancy routers 
costing $200 and up.  I got this one for free, but I guess I'll have to 
buy one for $50 ballpark.

-- 

Rick C

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#460912

On Fri, 19 May 2017 00:02:35 -0400, rickman <gnuarm@gmail.com> wrote:

>I've been having a problem with my networking periodically.  But it only 
>happens in one location.  When I am at other places I don't see it happen.
>
>Because the Internet provider here is not so perfect, I keep a command 
>window open with a 1 second ping running on 8.8.8.8 which is a major 
>server that should never go down.  The symptom I see is this ping starts 
>timing out or at least the times go way up from 20-40 ms range to quad 
>digits.  This is concurrent with all the web apps losing access to the 
>Internet, browser, email, newsreader...
>
>I originally thought it was the ISP since I don't see the problem when I 
>am at other locations.  But I opened browser tabs to the router and 
>modem only to find I have no access to them either while this is 
>happening.  So it must be something in my PC or possibly the router. 
>When the connection is restored the router is in the same context it was 
>before the disruption, so the router isn't rebooting.  The wifi 
>connection is 5 of 5 bars.
>
>This condition can last a few seconds to a few minutes.  Sometimes this 
>seems to be triggered by clicking a link in a browser, but it often 
>happens randomly.
>
>I'm pretty much at a loss to figure out what is causing this.  Any 
>suggestions?  Is there something in the PC that could cause this?
>
>I guess I do have one idea, buy a new router and see if that is the 
>problem.  This router is 15 years old, so a new one wouldn't be a total 
>waste.  I'm really surprised to see some of the fancy dancy routers 
>costing $200 and up.  I got this one for free, but I guess I'll have to 
>buy one for $50 ballpark.

Might be a DNS problem.  Have you ran DNSBENCH to characterize the DNS
servers ?
Also try setting a DNS address in windows, so that the router does not
have to do the lookups.

Cheers

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#460914

On 19/05/2017 12:06, Martin Riddle wrote:
> On Fri, 19 May 2017 00:02:35 -0400, rickman <gnuarm@gmail.com> wrote:
>
>> I've been having a problem with my networking periodically.  But it only
>> happens in one location.  When I am at other places I don't see it happen.
>>
>> Because the Internet provider here is not so perfect, I keep a command
>> window open with a 1 second ping running on 8.8.8.8 which is a major
>> server that should never go down.  The symptom I see is this ping starts
>> timing out or at least the times go way up from 20-40 ms range to quad
>> digits.  This is concurrent with all the web apps losing access to the
>> Internet, browser, email, newsreader...

Assuming you ping that directly without DNS lookup then it seems most 
likely that you are running into a tapit cause by the doubling backoff 
rule when ethernet packets find themselves corrupted by contention.
>>
>> I originally thought it was the ISP since I don't see the problem when I
>> am at other locations.  But I opened browser tabs to the router and
>> modem only to find I have no access to them either while this is
>> happening.  So it must be something in my PC or possibly the router.
>> When the connection is restored the router is in the same context it was
>> before the disruption, so the router isn't rebooting.  The wifi
>> connection is 5 of 5 bars.

Try it with a wired connection to see if it goes away.
>>
>> This condition can last a few seconds to a few minutes.  Sometimes this
>> seems to be triggered by clicking a link in a browser, but it often
>> happens randomly.
>>
>> I'm pretty much at a loss to figure out what is causing this.  Any
>> suggestions?  Is there something in the PC that could cause this?

Ethernet packet timeout and exponential backoffs resulting from them.

>> I guess I do have one idea, buy a new router and see if that is the
>> problem.  This router is 15 years old, so a new one wouldn't be a total
>> waste.  I'm really surprised to see some of the fancy dancy routers
>> costing $200 and up.  I got this one for free, but I guess I'll have to
>> buy one for $50 ballpark.
>
> Might be a DNS problem.  Have you ran DNSBENCH to characterize the DNS
> servers ?

Seems unlikely. It is also suspicious that the router's and modem's own 
home pages cannot be reached. I'd suspect the router. Cheap fast ones 
can be had for about £10 these days. But if it is as old as you say then 
its Wifi is probably pretty dreadful and insecure so you might well be 
better off with a newer more capable all in one.

> Also try setting a DNS address in windows, so that the router does not
> have to do the lookups.

If the PC to router config webpage is inaccessible the chances are the 
problem is very local indeed. Bad cable or neighbouring RF interference.



-- 
Regards,
Martin Brown

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#460917

> 
> If the PC to router config webpage is inaccessible the chances are the 
> problem is very local indeed. Bad cable or neighbouring RF interference.
> 
> 
> 
> -- 
> Regards,
> Martin Brown

microwave oven in use nearby?

m

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#460968

On 5/19/2017 7:38 AM, Martin Brown wrote:
> On 19/05/2017 12:06, Martin Riddle wrote:
>> On Fri, 19 May 2017 00:02:35 -0400, rickman <gnuarm@gmail.com> wrote:
>>
>>> I've been having a problem with my networking periodically.  But it only
>>> happens in one location.  When I am at other places I don't see it
>>> happen.
>>>
>>> Because the Internet provider here is not so perfect, I keep a command
>>> window open with a 1 second ping running on 8.8.8.8 which is a major
>>> server that should never go down.  The symptom I see is this ping starts
>>> timing out or at least the times go way up from 20-40 ms range to quad
>>> digits.  This is concurrent with all the web apps losing access to the
>>> Internet, browser, email, newsreader...
>
> Assuming you ping that directly without DNS lookup then it seems most
> likely that you are running into a tapit cause by the doubling backoff
> rule when ethernet packets find themselves corrupted by contention.

Yes, IP address ping without DNS lookup.  "tapit cause"?  Not sure what 
that means.  Google doesn't know.

Contention would be hard to justify, 1 attached device.  I suppose 
corruption would do the same thing.


>>> I originally thought it was the ISP since I don't see the problem when I
>>> am at other locations.  But I opened browser tabs to the router and
>>> modem only to find I have no access to them either while this is
>>> happening.  So it must be something in my PC or possibly the router.
>>> When the connection is restored the router is in the same context it was
>>> before the disruption, so the router isn't rebooting.  The wifi
>>> connection is 5 of 5 bars.
>
> Try it with a wired connection to see if it goes away.

Not so easy to do.  I need a 40 foot cable.


>>> This condition can last a few seconds to a few minutes.  Sometimes this
>>> seems to be triggered by clicking a link in a browser, but it often
>>> happens randomly.
>>>
>>> I'm pretty much at a loss to figure out what is causing this.  Any
>>> suggestions?  Is there something in the PC that could cause this?
>
> Ethernet packet timeout and exponential backoffs resulting from them.
>
>>> I guess I do have one idea, buy a new router and see if that is the
>>> problem.  This router is 15 years old, so a new one wouldn't be a total
>>> waste.  I'm really surprised to see some of the fancy dancy routers
>>> costing $200 and up.  I got this one for free, but I guess I'll have to
>>> buy one for $50 ballpark.
>>
>> Might be a DNS problem.  Have you ran DNSBENCH to characterize the DNS
>> servers ?
>
> Seems unlikely. It is also suspicious that the router's and modem's own
> home pages cannot be reached. I'd suspect the router. Cheap fast ones
> can be had for about £10 these days. But if it is as old as you say then
> its Wifi is probably pretty dreadful and insecure so you might well be
> better off with a newer more capable all in one.
>
>> Also try setting a DNS address in windows, so that the router does not
>> have to do the lookups.
>
> If the PC to router config webpage is inaccessible the chances are the
> problem is very local indeed. Bad cable or neighbouring RF interference.

Not much here to interfere.  One house some 100 feet away with no one in 
it.  Everything else is multiple 100's of feet away.  I see their wifi 
SSIDs once in while, mostly I appear to be alone here.

-- 

Rick C

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#460973

rickman wrote:


> Not much here to interfere.  One house some 100 feet away with no one in
> it.  Everything else is multiple 100's of feet away.  I see their wifi
> SSIDs once in while, mostly I appear to be alone here.
> 
Well, just because there isn't much other wi-fi activity in the area doesn't 
mean there isn't anything else on that RF channel.  So much STUFF is now 
using the same bands, like remotely-read utility meters, cell phones, 
utility and public service (police and fire) communications, that it is a 
miracle any of this stuff works at all.  And, of course, a lot of gear 
radiates tons of interfering signals, some of which have harmonics that 
range up into the GHz.  I just avoid wi-fi completely if I possibly can.

Like at hotels, their wi-fi runs at 10 KBPS, but if I can find how to hook 
up a wired Ethernet, I get 50 MBPS.  If you have a fixed location where you 
use the computer, run a cable in the ceiling, under the carpet, whatever it 
takes.

Jon

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#460977

On 5/19/2017 4:02 PM, Jon Elson wrote:
> rickman wrote:
>
>
>> Not much here to interfere.  One house some 100 feet away with no one in
>> it.  Everything else is multiple 100's of feet away.  I see their wifi
>> SSIDs once in while, mostly I appear to be alone here.
>>
> Well, just because there isn't much other wi-fi activity in the area doesn't
> mean there isn't anything else on that RF channel.  So much STUFF is now
> using the same bands, like remotely-read utility meters, cell phones,
> utility and public service (police and fire) communications, that it is a
> miracle any of this stuff works at all.  And, of course, a lot of gear
> radiates tons of interfering signals, some of which have harmonics that
> range up into the GHz.  I just avoid wi-fi completely if I possibly can.
>
> Like at hotels, their wi-fi runs at 10 KBPS, but if I can find how to hook
> up a wired Ethernet, I get 50 MBPS.  If you have a fixed location where you
> use the computer, run a cable in the ceiling, under the carpet, whatever it
> takes.

You aren't getting the picture.  I'm nowhere near public service comms 
towers and the meter is an old one read by a person.  Think lands that 
the Navajo call the boonies!

Cell phone and public service don't share the band with wi-fi at 2.4 
MHz.  That would cause interference with the cell phones and public 
service comms in a big way.

-- 

Rick C

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#460994

On Fri, 19 May 2017 16:53:46 -0400, rickman wrote:

> You aren't getting the picture.  I'm nowhere near public service comms
> towers and the meter is an old one read by a person.  Think lands that
> the Navajo call the boonies!
> 
> Cell phone and public service don't share the band with wi-fi at 2.4
> MHz. That would cause interference with the cell phones and public
> service comms in a big way.

The microwave oven uses the same band, and a 1% leak from 1500W is still 
15W. Could it be that someone is cooking dinner?

Run wireshark on your computer and dump the traffic on your local 
interface---see if there is a rush of traffic, or error packets.

Do try wired connection, just for testing: even if it meant picking up 
your computer and moving over next to the router.

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#461000

On 5/19/2017 7:30 PM, Przemek Klosowski wrote:
> On Fri, 19 May 2017 16:53:46 -0400, rickman wrote:
>
>> You aren't getting the picture.  I'm nowhere near public service comms
>> towers and the meter is an old one read by a person.  Think lands that
>> the Navajo call the boonies!
>>
>> Cell phone and public service don't share the band with wi-fi at 2.4
>> MHz. That would cause interference with the cell phones and public
>> service comms in a big way.
>
> The microwave oven uses the same band, and a 1% leak from 1500W is still
> 15W. Could it be that someone is cooking dinner?

200 yards away at 2 AM?  If someone had a 15 W leak I think they would 
notice the cataracts.


> Run wireshark on your computer and dump the traffic on your local
> interface---see if there is a rush of traffic, or error packets.
>
> Do try wired connection, just for testing: even if it meant picking up
> your computer and moving over next to the router.

It doesn't happen all the time.  I'd have to let it sit there for hours.

I've ordered a new router and a 50 foot CAT-6 cable.  Someone was nice 
enough to send me an email offering an old router that he isn't using 
anymore.  That was generous.

The one I've ordered is a remanufactured Linksys WRT54GL-RM.  It is only 
old in the sense of not supporting blindingly fast rates.  I will do 
well to get 7 Mbps so it should work for me here just fine.  It that 
craps out as well, I'll start checking the horizon for EMP machines.

-- 

Rick C

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#461001

rickman wrote:


> 
> You aren't getting the picture.  I'm nowhere near public service comms
> towers and the meter is an old one read by a person.  Think lands that
> the Navajo call the boonies!
> 
> Cell phone and public service don't share the band with wi-fi at 2.4
> MHz.  That would cause interference with the cell phones and public
> service comms in a big way.
> 
Well, there may be systems in the area you are not aware of.  Any airports 
nearby with S-band radars?  Area 51, maybe?

Well, joking aside, it may be that the wi-fi modem is just getting ready to 
die, too.

As for cell phones, a guy driving by using a cell phone in the boonies might 
have his phone running at max transmitter output, and that could cause 
receiver overload at either your computer or modem.  But, of course, I'm 
totally guessing.

Jon

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#461005

On 5/19/2017 10:26 PM, Jon Elson wrote:
> rickman wrote:
>
>
>>
>> You aren't getting the picture.  I'm nowhere near public service comms
>> towers and the meter is an old one read by a person.  Think lands that
>> the Navajo call the boonies!
>>
>> Cell phone and public service don't share the band with wi-fi at 2.4
>> MHz.  That would cause interference with the cell phones and public
>> service comms in a big way.
>>
> Well, there may be systems in the area you are not aware of.  Any airports
> nearby with S-band radars?  Area 51, maybe?
>
> Well, joking aside, it may be that the wi-fi modem is just getting ready to
> die, too.
>
> As for cell phones, a guy driving by using a cell phone in the boonies might
> have his phone running at max transmitter output, and that could cause
> receiver overload at either your computer or modem.  But, of course, I'm
> totally guessing.

Good try, but driving by still means half a mile.  Cell phones aren't on 
the same frequency although they may be close.  At that distance the 
attenuation should be enough to prevent interference.  I suppose some of 
the closer houses could have cell phones or even cordless phones 
operating, but why wouldn't that affect every wifi device and not just 
mine?

ANY cell phone in this area will be running at max power.

-- 

Rick C

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#460982

On Friday, 19 May 2017 19:51:31 UTC+1, rickman  wrote:

> Yes, IP address ping without DNS lookup.  "tapit cause"?  Not sure what 
> that means.  Google doesn't know.

Try tarpit.

John

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#461023

On 19/05/2017 19:51, rickman wrote:
> On 5/19/2017 7:38 AM, Martin Brown wrote:
>> On 19/05/2017 12:06, Martin Riddle wrote:
>>> On Fri, 19 May 2017 00:02:35 -0400, rickman <gnuarm@gmail.com> wrote:
>>>
>>>> I've been having a problem with my networking periodically.  But it
>>>> only
>>>> happens in one location.  When I am at other places I don't see it
>>>> happen.
>>>>
>>>> Because the Internet provider here is not so perfect, I keep a command
>>>> window open with a 1 second ping running on 8.8.8.8 which is a major
>>>> server that should never go down.  The symptom I see is this ping
>>>> starts
>>>> timing out or at least the times go way up from 20-40 ms range to quad
>>>> digits.  This is concurrent with all the web apps losing access to the
>>>> Internet, browser, email, newsreader...
>>
>> Assuming you ping that directly without DNS lookup then it seems most
>> likely that you are running into a tapit cause by the doubling backoff
>> rule when ethernet packets find themselves corrupted by contention.
>
> Yes, IP address ping without DNS lookup.  "tapit cause"?  Not sure what
> that means.  Google doesn't know.

Typo for tarpit. Basically the exponential backoff really hurts if a 
burst of interference prevents the resend working many times.

> Contention would be hard to justify, 1 attached device.  I suppose
> corruption would do the same thing.

That is why you need to try a wired connection. It will be the first 
thing your ISP recommends when you report a fault.

>>>> I originally thought it was the ISP since I don't see the problem
>>>> when I
>>>> am at other locations.  But I opened browser tabs to the router and
>>>> modem only to find I have no access to them either while this is
>>>> happening.  So it must be something in my PC or possibly the router.
>>>> When the connection is restored the router is in the same context it
>>>> was
>>>> before the disruption, so the router isn't rebooting.  The wifi
>>>> connection is 5 of 5 bars.
>>
>> Try it with a wired connection to see if it goes away.
>
> Not so easy to do.  I need a 40 foot cable.

40' is nothing. You can do a trailing cat5 cable for a test.
It isn't rocket science.

>> If the PC to router config webpage is inaccessible the chances are the
>> problem is very local indeed. Bad cable or neighbouring RF interference.
>
> Not much here to interfere.  One house some 100 feet away with no one in
> it.  Everything else is multiple 100's of feet away.  I see their wifi
> SSIDs once in while, mostly I appear to be alone here.
>

Something is wrecking data transmission. The obvious diagnostic is to 
use another more reliable connection to the router.

-- 
Regards,
Martin Brown

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#461025

On 5/20/2017 3:41 AM, Martin Brown wrote:
> On 19/05/2017 19:51, rickman wrote:
>> On 5/19/2017 7:38 AM, Martin Brown wrote:
>>> On 19/05/2017 12:06, Martin Riddle wrote:
>>>> On Fri, 19 May 2017 00:02:35 -0400, rickman <gnuarm@gmail.com> wrote:
>>>>
>>>>> I've been having a problem with my networking periodically.  But it
>>>>> only
>>>>> happens in one location.  When I am at other places I don't see it
>>>>> happen.
>>>>>
>>>>> Because the Internet provider here is not so perfect, I keep a command
>>>>> window open with a 1 second ping running on 8.8.8.8 which is a major
>>>>> server that should never go down.  The symptom I see is this ping
>>>>> starts
>>>>> timing out or at least the times go way up from 20-40 ms range to quad
>>>>> digits.  This is concurrent with all the web apps losing access to the
>>>>> Internet, browser, email, newsreader...
>>>
>>> Assuming you ping that directly without DNS lookup then it seems most
>>> likely that you are running into a tapit cause by the doubling backoff
>>> rule when ethernet packets find themselves corrupted by contention.
>>
>> Yes, IP address ping without DNS lookup.  "tapit cause"?  Not sure what
>> that means.  Google doesn't know.
>
> Typo for tarpit. Basically the exponential backoff really hurts if a
> burst of interference prevents the resend working many times.
>
>> Contention would be hard to justify, 1 attached device.  I suppose
>> corruption would do the same thing.
>
> That is why you need to try a wired connection. It will be the first
> thing your ISP recommends when you report a fault.
>
>>>>> I originally thought it was the ISP since I don't see the problem
>>>>> when I
>>>>> am at other locations.  But I opened browser tabs to the router and
>>>>> modem only to find I have no access to them either while this is
>>>>> happening.  So it must be something in my PC or possibly the router.
>>>>> When the connection is restored the router is in the same context it
>>>>> was
>>>>> before the disruption, so the router isn't rebooting.  The wifi
>>>>> connection is 5 of 5 bars.
>>>
>>> Try it with a wired connection to see if it goes away.
>>
>> Not so easy to do.  I need a 40 foot cable.
>
> 40' is nothing. You can do a trailing cat5 cable for a test.
> It isn't rocket science.

It's not???  I'm floored!  I don't have a 40 foot cable.  As I have 
written, I have ordered one.


>>> If the PC to router config webpage is inaccessible the chances are the
>>> problem is very local indeed. Bad cable or neighbouring RF interference.
>>
>> Not much here to interfere.  One house some 100 feet away with no one in
>> it.  Everything else is multiple 100's of feet away.  I see their wifi
>> SSIDs once in while, mostly I appear to be alone here.
>>
>
> Something is wrecking data transmission. The obvious diagnostic is to
> use another more reliable connection to the router.
>


-- 

Rick C

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#460971

Martin Riddle wrote:


> 
> Might be a DNS problem.  Have you ran DNSBENCH to characterize the DNS
> servers ?
No, if he's pinging 8.8.8.8 he is not using domain lookup.  Also, if he 
can't ping the modem or router, it has to be the Wi-Fi connection.

Just because there are 5 bars of signal strength doesn't mean the wi-fi 
channel is clear of interference or other valid traffic.  Also, people 
moving around and other effects can cause the signal path between wi-fi 
access point and PC to be bad.

Jon

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#461636

On 2017-05-19, rickman <gnuarm@gmail.com> wrote:
> I've been having a problem with my networking periodically.  But it only 
> happens in one location.  When I am at other places I don't see it happen.
>
> Because the Internet provider here is not so perfect, I keep a command 
> window open with a 1 second ping running on 8.8.8.8 which is a major 
> server that should never go down.  The symptom I see is this ping starts 
> timing out or at least the times go way up from 20-40 ms range to quad 
> digits.  This is concurrent with all the web apps losing access to the 
> Internet, browser, email, newsreader...
>
> I originally thought it was the ISP since I don't see the problem when I 
> am at other locations.  But I opened browser tabs to the router and 
> modem only to find I have no access to them either while this is 
> happening.  So it must be something in my PC or possibly the router. 
> When the connection is restored the router is in the same context it was 
> before the disruption, so the router isn't rebooting.  The wifi 
> connection is 5 of 5 bars.

wifi access point is built into the router?

Microwave oven perhaps?  how stable is your 60Hz? 

Is the powersupply performing to the specs on the label?



-- 
This email has not been checked by half-arsed antivirus software 

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#461713

Jasen Betts wrote on 5/25/2017 12:54 AM:
> On 2017-05-19, rickman <gnuarm@gmail.com> wrote:
>> I've been having a problem with my networking periodically.  But it only
>> happens in one location.  When I am at other places I don't see it happen.
>>
>> Because the Internet provider here is not so perfect, I keep a command
>> window open with a 1 second ping running on 8.8.8.8 which is a major
>> server that should never go down.  The symptom I see is this ping starts
>> timing out or at least the times go way up from 20-40 ms range to quad
>> digits.  This is concurrent with all the web apps losing access to the
>> Internet, browser, email, newsreader...
>>
>> I originally thought it was the ISP since I don't see the problem when I
>> am at other locations.  But I opened browser tabs to the router and
>> modem only to find I have no access to them either while this is
>> happening.  So it must be something in my PC or possibly the router.
>> When the connection is restored the router is in the same context it was
>> before the disruption, so the router isn't rebooting.  The wifi
>> connection is 5 of 5 bars.
>
> wifi access point is built into the router?

Yes, isn't that why people use routers?  They don't know the router 
could be separate from the wifi access point.


> Microwave oven perhaps?  how stable is your 60Hz?

Huh?  I'm not on a diesel generator if that's what you mean.  I believe 
the grid is pretty stable no matter where you are.


> Is the powersupply performing to the specs on the label?

Which power supply?  The modem, the router or the PC?

-- 

Rick C

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#461769

On 2017-05-25, rickman <gnuarm@gmail.com> wrote:
> Jasen Betts wrote on 5/25/2017 12:54 AM:
>> On 2017-05-19, rickman <gnuarm@gmail.com> wrote:
>>> I've been having a problem with my networking periodically.  But it only
>>> happens in one location.  When I am at other places I don't see it happen.
>>>
>>> Because the Internet provider here is not so perfect, I keep a command
>>> window open with a 1 second ping running on 8.8.8.8 which is a major
>>> server that should never go down.  The symptom I see is this ping starts
>>> timing out or at least the times go way up from 20-40 ms range to quad
>>> digits.  This is concurrent with all the web apps losing access to the
>>> Internet, browser, email, newsreader...
>>>
>>> I originally thought it was the ISP since I don't see the problem when I
>>> am at other locations.  But I opened browser tabs to the router and
>>> modem only to find I have no access to them either while this is
>>> happening.  So it must be something in my PC or possibly the router.
>>> When the connection is restored the router is in the same context it was
>>> before the disruption, so the router isn't rebooting.  The wifi
>>> connection is 5 of 5 bars.
>>
>> wifi access point is built into the router?
>
> Yes, isn't that why people use routers?  They don't know the router 
> could be separate from the wifi access point.

>> Microwave oven perhaps?  how stable is your 60Hz?
>
> Huh?  I'm not on a diesel generator if that's what you mean.  I believe 
> the grid is pretty stable no matter where you are.

There's a thing where wifi tries to dodge the bursts of interferance
from microwave ovens, that requires guessing the future, not on a 
diesel generator is plenty good enough.

>> Is the powersupply performing to the specs on the label?
>
> Which power supply?  The modem, the router or the PC?

The router. we have a WRT54GL at work with a powersupply failure. now
running fine on an aftermarket 12W wall-wart. we have the router
features disabled (especially DHCP) and only the LAN ports connected

-- 
This email has not been checked by half-arsed antivirus software 

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#461776

Jasen Betts wrote on 5/26/2017 1:50 AM:
> On 2017-05-25, rickman <gnuarm@gmail.com> wrote:
>> Jasen Betts wrote on 5/25/2017 12:54 AM:
>>> On 2017-05-19, rickman <gnuarm@gmail.com> wrote:
>>>> I've been having a problem with my networking periodically.  But it only
>>>> happens in one location.  When I am at other places I don't see it happen.
>>>>
>>>> Because the Internet provider here is not so perfect, I keep a command
>>>> window open with a 1 second ping running on 8.8.8.8 which is a major
>>>> server that should never go down.  The symptom I see is this ping starts
>>>> timing out or at least the times go way up from 20-40 ms range to quad
>>>> digits.  This is concurrent with all the web apps losing access to the
>>>> Internet, browser, email, newsreader...
>>>>
>>>> I originally thought it was the ISP since I don't see the problem when I
>>>> am at other locations.  But I opened browser tabs to the router and
>>>> modem only to find I have no access to them either while this is
>>>> happening.  So it must be something in my PC or possibly the router.
>>>> When the connection is restored the router is in the same context it was
>>>> before the disruption, so the router isn't rebooting.  The wifi
>>>> connection is 5 of 5 bars.
>>>
>>> wifi access point is built into the router?
>>
>> Yes, isn't that why people use routers?  They don't know the router
>> could be separate from the wifi access point.
>
>>> Microwave oven perhaps?  how stable is your 60Hz?
>>
>> Huh?  I'm not on a diesel generator if that's what you mean.  I believe
>> the grid is pretty stable no matter where you are.
>
> There's a thing where wifi tries to dodge the bursts of interferance
> from microwave ovens, that requires guessing the future, not on a
> diesel generator is plenty good enough.
>
>>> Is the powersupply performing to the specs on the label?
>>
>> Which power supply?  The modem, the router or the PC?
>
> The router. we have a WRT54GL at work with a powersupply failure. now
> running fine on an aftermarket 12W wall-wart. we have the router
> features disabled (especially DHCP) and only the LAN ports connected

As it turns out the WRT54GL is what I bought to replace this one.  I had 
a little trouble installing it.  Rather than just give directions they 
provided a CD and I couldn't get it to work.  So I had to cable up to it 
and with a bunch of trial and error (more error than trial) I got it 
working.  So far it seems to be free of the problem(s) I was seeing. 
Heck, maybe it was a duff wall wart on the 15 year old Netgear unit. 
I'm glad to have a newer unit anyway.  The WRT54GL has one of those 
"press this button to setup your wifi" buttons.  It didn't seem to work 
with my PC though.  I wonder if it is an older protocol that isn't used 
anymore.

-- 

Rick C

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