Network Disconnection Problems


M

Marts

A while ago I posted a note asking for advice on one of our PCs disconnecting
the ADSL modem when it was starting up. Unfortunately no-one was able to help me
track down the problem. Now I've discovered another problem.

If the PC is sitting there idle, say, with an email client open and Firefox
sitting there, if, after an hour or so (the time period is indeterminate) if you
go to say click on a link, then the modem is disconnected.

The last time that this occured, a few minutes ago, we'd been out. We got home
and the wife went to check her webmail. As she clicked on it she got the
"website not found" message. I then checked the modem. Sure enough it was
disconnected and trying to re-establish the connection.

In past discussions it was centred on the computer booting up and what processes
could be interupting the modem's connection to the ISP. Now, we can discount
this.

As far as the PC config goes, it has static IP addresses enabled. No DHCP.
Windows XP Pro SP2. I have 3 other PCs on the network and all of them are
configured identically, and also running XP SP2.

I do not have any power saver modes active, so hard disks, monitors, etc. do not
go into hibernation or standby modes.

The PCs all connect into the network via the ADSL modem's 4 port switch.

This problem is really frustrating me as I cannot pick out any discrepancies
between it and the other computers on the network.

So, any help WILL be appreciated.

Thanks
 
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S

student

A while ago I posted a note asking for advice on one of our PCs disconnecting
the ADSL modem when it was starting up. Unfortunately no-one was able to help me
track down the problem. Now I've discovered another problem.

If the PC is sitting there idle, say, with an email client open and Firefox
sitting there, if, after an hour or so (the time period is indeterminate) if you
go to say click on a link, then the modem is disconnected.

The last time that this occured, a few minutes ago, we'd been out. We got home
and the wife went to check her webmail. As she clicked on it she got the
"website not found" message. I then checked the modem. Sure enough it was
disconnected and trying to re-establish the connection.

In past discussions it was centred on the computer booting up and what processes
could be interupting the modem's connection to the ISP. Now, we can discount
this.

As far as the PC config goes, it has static IP addresses enabled. No DHCP.
Windows XP Pro SP2. I have 3 other PCs on the network and all of them are
configured identically, and also running XP SP2.

I do not have any power saver modes active, so hard disks, monitors, etc. do not
go into hibernation or standby modes.

The PCs all connect into the network via the ADSL modem's 4 port switch.

This problem is really frustrating me as I cannot pick out any discrepancies
between it and the other computers on the network.

So, any help WILL be appreciated.

Thanks


It looks like you have one those modem/router units. Check to see if you
can login to the router/switch part for setup/maintenance; if you cannot
then it is the ADSL/router that is crashing not the PCs killing the internet
connection. Also you can see if the internect connection if you reboot
the modem/router; if you can access the internet again it is time for a
new modem/router or separate units of modem & router, which I think
would be easier to determine problems. Of course the problem could be
the ADSL part.

I had a similar problem with my Netgear VPN router & thought the PC was
the problem as it had a new updated motherboard with gigabyte capability.
The only solution I found was to reboot the router by disconnecting the power
cable from the router, wait about 20 sec then reconnect; the computer was
able to continue to do whatever it was doing on the internet "as if nothing
happened" except for the winxp notification of network disconnection &
reconnection. The leds on the router claimed everything was ok even when
it wasn't.

My more permanent solution was just to get another router from another
company as Netgear "support" is non-effective like many companies & want
payment to help fix problems created by the company.
 
M

Marts

student wrote...
It looks like you have one those modem/router units. Check to see if you

It is. http://www.opennw.com/products/broadband/624.php
can login to the router/switch part for setup/maintenance; if you cannot

Yes. The modem works fine from that viewpoint.

If it was the modem, why is it only being kicked off the net by this one
specific computer? None of the others do it.

I have swapped cables, swapped ports (it has a built in 4 port switch), checked
and double checked hardware settings in ALL computers to ensure that they are
identical. Ditto for network config settings.
My more permanent solution was just to get another router from another
company as Netgear "support" is non-effective like many companies & want
payment to help fix problems created by the company.

That too is an option, but as the modem is ISP supplied I'd have to convince
them that the modem is faulty. They'll naturally say that it's at my end. I'm
reluctant to buy another modem if mine isn't faulty, or if it is, I cannot prove
it to effect a warranty replacement.
 
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S

student

student wrote...


It is. http://www.opennw.com/products/broadband/624.php


Yes. The modem works fine from that viewpoint.

If it was the modem, why is it only being kicked off the net by this one
specific computer? None of the others do it.

I have swapped cables, swapped ports (it has a built in 4 port switch), checked
and double checked hardware settings in ALL computers to ensure that they are
identical. Ditto for network config settings.


That too is an option, but as the modem is ISP supplied I'd have to convince
them that the modem is faulty. They'll naturally say that it's at my end. I'm
reluctant to buy another modem if mine isn't faulty, or if it is, I cannot prove
it to effect a warranty replacement.

The old standy is that there could be a virus on the bad computer as it
remains the bad computer even swapping it to another port. Or just
assigned the same IP by the router/switch.

Perhaps posting on an ADSL modem newsgroup may help; if no ADSL modem
newsgroup, check in on the comp.dcom.cable.modem (not sure of the exact
newsgroup name).
 

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