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tonyjob

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DHCP detected on router

Hello,

On SBS 2008 the "connect to internet wizard" is detecting an existing network with DHCP enabled on the router. I've disabled the DHCP on the router but it still detects it.

I've checked with BT (its a BT router) and they say what i've done to disable it is correct. and i've also tried restarting the router/server.

can anyone help?
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mekhet30
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Refresh the IP on the machine that got the IP from the Router.  

ipconfig /renew

I'm asuming that you have another DHCP on your network.  

Cheers
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tonyjob

ASKER

I tried the renew on the server and i get a message saying "the operation failed as no adapter is in the state permissible for this operation" and on the only workstation connected it says "an error occured while renewing interface local area connection. request has timed out. an error occured while releasing interface loopback pseudo-interface 1 : the system cannot find the file specified".

i have dhcp running on the server (i think, i've not done this before) and if i check the dhcp leases it does have the workstation there so it seems like its coming from there. it doesnt have the server in the leases tho, should it be?
Ok - your server should have a static IP in the range that you have set-up.  I'm guessing your server has a static IP that is why it will not renew.  As for the workstation - not sure why you are getting the "interface loopback pseudo-interface 1 : the system cannot find the file specified".

Have you set-up your gateway and DNS servers on the DHCP and it the gateway your router?  

Lets take this from the beginning.

You DHCP range e.g.
Range:  10.0.0.1 - 10.0.0.254
Sub:  255.255.255.0
Gateway: 10.0.0.1 (router)
P DNS 10.0.0.1 (router) or your local DNS server if you have one.

Your server network IP config should look as  e.g
IP: 10.0.0.10
Sub: 255.255.255.0
Gateway: 10.0.0.1
P DNS: 10.0.0.1 or the local DNS server

Check if you can access the internet once you have configured it as above


Cheers

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ASKER

the only differences i can see are that my range is from 192.168.1.100 -> 198.168.1.199 and my server was at 192.168.1.2. does the static server address need to be within the range? I've changed it anyway.

i've noticed when i run the connect to internet wizard it stops the dhcp service, should that happen?

and i should have been more specific in my original question. i can currently connect the the internet using the current setup its just that when i try to run other wizards such as "setup your internet address" they say i need to run the "connect to internet wizard" first.
As long as your range is within the subnet specified then it should work.  

ie.  Server IP 192.168.1.2 will work in your range.  The DHCP range is the IP that is leases to the client machine.  It does not restrict the IPs from 1 to 99

The connect to Internet wizard should not stop the DHCP service.  

Let the connect to the internet wizzard complete.  Once completed, then set-up your DHCP etc.

Cheers


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ASKER

the wizard wont complete. it detects the existing network and asks me to either "manage router" to switch it off, "postpone" to cancel the setup, or "continue" to retry.

i've not had much to do with server setup before but it all seems fine except this wizard wont run. i can connect to internet from both server and workstation, and the server seems to be assigning the IP to the workstation. everything seems wo work, it just wont let me run other wizards until this one has ran....
wierd - sorry dude.

Maybe one of the other guys have more experience with this problem u are having

Cheers
Right, turn the router off completely, at the wall and run it again. If it still detects it then you have another device giving out DHCP. Try that and post back.
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plug1
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Greetings tonyjob

If you've powercycled the router and your SBS is still shutting down DHCP, then you just might have another router on your network.  Perhaps someone put it on the network to work as a switch, and forgot to turn off DHCP on it.  On a workstation that is using DHCP, open a Command Window (Start>Run>cmd) and issue an ipconfig /all.  The output will disclose the address of the DHCP server.  If it is not your SBS, then open a web browser to that IP address and turn off DHCP on that unit.

Good luck
Eric
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ASKER

Thanks for the help everyone. switching the router off whie the wizard ran has worked. i've also did a restart of both workstation and router just to make sure and everythings working fine.