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network goes down after a while

After ca 1 to 2 hour the network goes down and i can not go to internet??or se my workstation
I only have 1 network card in my server so it goes from router to hub and then to server and workstation


I have 1 server runs windows 2003 server
3 workstation runs win xp
Workstation runs auto ip

My server runs 192.168.1.252
subnet mask 255.255.255.o
Dhcp :192.168.1.1
Primary DNS Address:192.168.1.252

Router:
Gateway is 192.168.1.1

Best regard
MIchael
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Ottoes
Asked:
Ottoes
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1 Solution
 
Rob WilliamsCommented:
One thought; check to make sure that "allow this device to be turned of by the computer to save power" is not enabled on the power management tab, of the network adapter's properties.
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Jay_Jay70Commented:
Hi Ottoes,

hmm i would be leaning towards Rob' suggestion for sure, if no luck check your event viewers for me
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OttoesAuthor Commented:
Hmm i have try allow this device to be turned of by the computer to save power (not enabled)
But i still goes down after 30min this time i try

There are no error in the event viewer (strange)

What can be wrong!
the router restart the gateway and the internet goes down
the router is: The Gateway acts as DHCP Server   Enable
and dns is:     Primary DNS Address  192.168.1.252  (optional)
and i runs as dynamic ip address

Best regard
Michael.o.
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Jay_Jay70Commented:
what do you mean when you say the router restarts - is your router stuffed?
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OttoesAuthor Commented:
it disconnects from the internet
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Jay_Jay70Commented:
update to the latest firmware on your router and see if it makes any difference
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OttoesAuthor Commented:
I have opgrade the firmware

It still goes down this time olmost 3 hour

I do not get any log file from server still!

In the router it is the outgoing (ISP Gateway Address 87.49.71.241) there is disconnect
An the network goes down wery strage
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Rob WilliamsCommented:
If the router is disconnecting from the Internet do you have a PPPoE connection? If so check the routers WAN/Internet connection page. Below where you configure the PPPoE connection the is likely an "idle time" this is the length of time after which it will automatically disconnect. On a few routers you disable this by setting to '0', but on most, below that there is a "Keep alive option", if so enable that and set it to 30 seconds. You manual should have more details.
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OttoesAuthor Commented:
i cant do that on my router
and i am running dhcp from danish tdc internet
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Rob WilliamsCommented:
I have no other ideas. You mention you loose the Internet connection, and above you also say  you loose the local network connection. If both server and PC loose connectivity then there must be a problem with the router. Since you have already updated the firmware, is it possible to try another router? Or, you could install a switch between the computers and the router, if you then loose Internet activity but retain the ability to connect to the Internet , you would be sure the problem is the router.
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OttoesAuthor Commented:
I have i switch on now can it be because i dont use fast ip adressse

The router work perfekt when i dont have the server turn on

I disable the dhcp on router and have set it up so the server makes dhch
and it olso makes dns the server it is wery strange never try something like this before
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Rob WilliamsCommented:
>>" have i switch on now can it be because i don't use fast ip adressse I  have i switch on now can it be because i dont use fast ip adressse "
Sorry I don't understand this part.

You mentioned you disabled DHCP on the router and enabled on the server. That is the proper or better way to do it. Where they both enabled before, if so that can cause conflicts and problems.

If it works when the server is off, make sure that two devices, probably the server and the router, do not have the same IP address.  Are you familiar with assigning the IP addresses, subnet masks, and gateways, or would you like a hand with that?
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Rob WilliamsCommented:
Thanks Ottoes,
--Rob
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