I am trying to help a friend solve an unusual problem were the DSL signal drops
whenever a particular Win7 pc is booted up to join the network.

They have an ADB P.DG A4001N router/DSL modem. They use it with an adapter for
voip. It also feeds a smart wi-fi TV. They also have a small android tablet.
All devices work fine (simultaneously), no problem.

But when they boot up their Win7 pc... using wi-fi, the DSL (and access to the internet for all existing devices) just drops. The Win7 pc is able to join/login to the ADB router device fine, but fails to get internet access.

The DSL recovers after a few minutes after the Win7 pc has been turned off.

I tried connecting the Win7 pc directly via ethernet cable, and the same problem happens!

The Win7 pc TCP/IP is configured with "Obtain IP address automatically" and "Obtain DNS server automatically". The TV seems to prefer to always use 192.168.1.103. The gateway/router is 192.168.1.1.

When I introduce my modest XP Thinkpad T60 via wi-fi (which is also configured with "Obtain IP address.. Obtain DNS server.. automatically) I get a succesful connection to the network/internet and the TV and tablet have internet access fine.

But as soon as the Win7 pc is fired up and "connects" to the ADB, the whole DSL
feed drops for everyone.

Any ideas on what would be causing this problem?

Meanwhile, I configured the Win7 pc to use a specific IP address and the required gateway address.. but I haven't had a chance to test the pc on their home network.

...AA

--- Thunderbird 2.0.0.24 (Windows/20100228)
* Origin: - nntp://rbb.fidonet.fi - Lake Ylo - Finland - (2:221/360)

August Abolins : All wrote:

I am trying to help a friend solve an unusual problem were the DSL
signal drops whenever a particular Win7 pc is booted up to join the
network.

But as soon as the Win7 pc is fired up and "connects" to the ADB, the
whole DSL feed drops for everyone.

....and one more piece of info, the same Win7 pc connects and works fine on my own network at work/home. So.. it's not a defective network card/wifi hardware
problem.

--- Thunderbird 2.0.0.24 (Windows/20100228)
* Origin: - nntp://rbb.fidonet.fi - Lake Ylo - Finland - (2:221/360)

*
* On Monday 23 Jul 2018 204 at 01:09 AM,
* August Abolins said to All,
* about new wifi device crashes DSL ...
*

Man walks into a doctor's office, says "Doc, my arm hurts when I do this" {shakes arm vigorously}

Doc says "Well sir, don't do that!"

Thought you might want my 2 cents {chuckle} I have no idea :)


.- Keep the faith, --------------------------------------------------.
| |
| Ben aka cMech Web: http|ftp|binkp|telnet|ssh://cmech.dynip.com |
| ______ Email: fido4cmech(at)lusfiber.net |
| { O O } Home page: http://cmech.dynip.com/homepage/ |
| __m___oo___m__ |
`--| | | |- WildCat! BBS 24/7 +1-337-984-4794 any BAUD 8,N,1 -'

... A man with no destination is never lost.
--- GoldED+/W32-MSVC v1.1.5-g20180717 + Mystic BBS v1.12 A39
* Origin: FIDONet - The Positronium Repository (1:393/68)

*
* On Monday 23 Jul 2018 204 at 01:09 AM,
* August Abolins said to All,
* about new wifi device crashes DSL ...
*

Actually, if it were me, I would use Windows Easy Transfer to save all my data then re-install Windows 7 from scratch. Easy Transfer will restore your data.

2nd, if still having problems, download the current image of your router's firmware (exact same version) and re-burn it to the router. Of course, if you can find an update that fixes your woes, by all means burn it instead!

Good luck with all that ...


.- Keep the faith, --------------------------------------------------.
| |
| Ben aka cMech Web: http|ftp|binkp|telnet|ssh://cmech.dynip.com |
| ______ Email: fido4cmech(at)lusfiber.net |
| { O O } Home page: http://cmech.dynip.com/homepage/ |
| __m___oo___m__ |
`--| | | |- WildCat! BBS 24/7 +1-337-984-4794 any BAUD 8,N,1 -'

... Squirrels - Junk food for bears!
--- GoldED+/W32-MSVC v1.1.5-g20180717 + Mystic BBS v1.12 A39
* Origin: FIDONet - The Positronium Repository (1:393/68)

Ben Ritchey : August Abolins wrote:

Actually, if it were me, I would use Windows Easy Transfer to save all
my data
then re-install Windows 7 from scratch..

2nd, if still having problems, download the current image of your router's firmware (exact same version) and re-burn it to the router..

It turns out that hardcoding the TCP/IP4 setting to 192.168.1.111 and the gateway to 192.168.1.1 has helped.

But this experience seems to reveal some serious weaknesses in networking. It is too easy for anyone else with another wi-fi device to bring down the DSL!

I am going to assume there is a flaw in the ADB P.DG A4001N router/DSL modem that the internet provider gives its customers.

--- Thunderbird 2.0.0.24 (Windows/20100228)
* Origin: - nntp://rbb.fidonet.fi - Lake Ylo - Finland - (2:221/360)

Ben Ritchey said the following on 7/23/2018 6:25 AM:

Actually, if it were me, ..re-install Windows 7 from scratch.

2nd, if still having problems, download the current image of your router's firmware (exact same version) and re-burn it to the router.

Both, quite radical for me. The laptop was already "re-built"
with the built-in restore, so the problem can't be the PC.

Also.. the PC had no problems connecting to my own network that
apparently uses the same 192.168.1.1 starting point. Internet
was smooth, and no ill effects to my network of PCs.

The user was not given any login credentials to the router. I
was thinking of just doing a big fat button reset, but I was
afraid that might wipe out some particulars the provider
programmed it with.

Anyway.. all seems to be good since I simply forced the PC to use
a specific IP address and the gateway address.

Now, I seem to have other problems of my own: my regular laptop
is simply not starting up. No AC/power light at the laptop even
when the AC adaptor is plugged in. :(
--- Platinum Xpress/Win/WINServer v3.0pr5
* Origin: TECHWARE BBS - Since 1995 - www.techware.dynip.com/ (1:102/401)

* An ongoing debate between AUGUST ABOLINS and Ben Ritchey rages on ...

Anyway.. all seems to be good since I simply forced the PC to use
a specific IP address and the gateway address.

Great!

Now, I seem to have other problems of my own: my regular laptop
is simply not starting up. No AC/power light at the laptop even
when the AC adaptor is plugged in. :(

Must be Winserver screwing everything up {chuckle} just kidding! Check the output of the Laptop's AC adapter with a Voltmeter and replace if bad. If it reads good then I would guess the laptop is at fault.

Luck with all that :)


.- Keep the faith, --------------------------------------------------.
| |
| Ben aka cMech Web: http|ftp|binkp|telnet|ssh://cmech.dynip.com |
| ______ Email: fido4cmech(at)lusfiber.net |
| { O O } Home page: http://cmech.dynip.com/homepage/ |
| __m___oo___m__ |
`--| | | |- WildCat! BBS 24/7 +1-337-984-4794 any BAUD 8,N,1 -'

... Flabbergasted (adj.), appalled over how much weight you have gained.
--- GoldED+/W32-MSVC v1.1.5-g20180717 ... via Mystic BBS!
* Origin: FIDONet - The Positronium Remote (1:393/68.8)

On 2018 Jul 23 01:09:28, you wrote to All:

When I introduce my modest XP Thinkpad T60 via wi-fi (which is also configured with "Obtain IP address.. Obtain DNS server.. automatically) I get a succesful connection to the network/internet and the TV and tablet have internet access fine.

But as soon as the Win7 pc is fired up and "connects" to the ADB, the

whole

DSL feed drops for everyone.

Any ideas on what would be causing this problem?

no clue but i would use the "Repair networking" option on that W7 box to hopefully ensure that there's nothing being injected into the networking stack... i would also run bootup virus scans using several malware and AV scanners to make sure the machine is clean... i've seen similar stuff like this
but it was back in the day when the DNS Changer malware thing was active...

)\/(ark

Always Mount a Scratch Monkey
Do you manage your own servers? If you are not running an IDS/IPS yer doin' it wrong...
... Let him speak. I just want to get this over with.
---
* Origin: (1:3634/12.73)

On 2018 Jul 23 01:16:58, you wrote to you:

But as soon as the Win7 pc is fired up and "connects" to the ADB, the
whole DSL feed drops for everyone.

....and one more piece of info, the same Win7 pc connects and works
fine on my own network at work/home. So.. it's not a defective
network card/wifi hardware problem.

what protocol is it using on your network compared with the other one? have you
tried to re-add it to its home network by pushing that button many routers have that supposedly makes syncing the router login to the system easier?

)\/(ark

Always Mount a Scratch Monkey
Do you manage your own servers? If you are not running an IDS/IPS yer doin' it wrong...
... The North has green salads. The South has collard greens.
---
* Origin: (1:3634/12.73)

mark lewis : August Abolins wrote:

what protocol is it using on your network compared with the other one?
have you tried to re-add it to its home network by pushing that button
many routers have that supposedly makes syncing the router login to the system easier?

Hi Mark..

Good suggestion with WPS. I failed to try it.

The router/modem has a "wifi" button at the back which is supposed to work with
WPS. But since I was not able to login to the router, I could not see if the feature was activated.

But I did two other things which has solved the problem: [1] I configured the Win7 pc to use a specific local IP address, [2] I noticed TWO entries for the home router SSID in the wifi list/tables, and removed what appeared to be an older one that represented a previous router from the same provider.

It still surprises me how easily another device joining the network could bring
the whole DSL service down!

--- Thunderbird 2.0.0.24 (Windows/20100228)
* Origin: - nntp://rbb.fidonet.fi - Lake Ylo - Finland - (2:221/360)

On 2018 Aug 04 03:23:28, you wrote to me:

what protocol is it using on your network compared with the other one?
have you tried to re-add it to its home network by pushing that button
many routers have that supposedly makes syncing the router login to the
system easier?

Good suggestion with WPS. I failed to try it.

maybe too late, now, too...

The router/modem has a "wifi" button at the back which is supposed to
work with WPS. But since I was not able to login to the router, I
could not see if the feature was activated.

if they're using wifi off that router, it is probably active... it just makes a
simple negotiation between the router and systems looking for the access information...

But I did two other things which has solved the problem: [1] I
configured the Win7 pc to use a specific local IP address,

that's one way to work around the problem...

[2] I noticed TWO entries for the home router SSID in the wifi list/tables, and removed what appeared to be an older one that
represented a previous router from the same provider.

that would be a good thing, too... i'd have probably removed both of them and then gone ahead with a full router reset and dealt with the resulting setup problems on all the other devices... that way, i would know exactly what's up with the network and would not have to play the guessing game or cross my fingers and hope things work...

It still surprises me how easily another device joining the network
could bring the whole DSL service down!

it is unlikely that it brought down the whole DSL service... it is more likely that it simply overwhelmed the router with requests... decent logging on the router or even protocol sniffing the ether would show if that was the case...

glad you got it working for them! good job!

)\/(ark

Always Mount a Scratch Monkey
Do you manage your own servers? If you are not running an IDS/IPS yer doin' it wrong...
... I got lost in thought. It was unfamiliar territory.
---
* Origin: (1:3634/12.73)