server 2008 dns server problem

November 30, 2011 at 18:46:05
Specs: Windows server 2008
Hello everyone. I have a windows Server Server 2k8 . It is behind a Motrola router that connects to our Cable Modem. I've got the server set up with AD, DNS, DHCP, I've got one laptop that is joined to the Domain, all the other computers in the house are not on the domain. And the modem i am useing it got builtin Dhcp . wht should i do? do i need to remove dhcp role from server 2008 or stop modem's dhcp services
need help i am a newbie

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#1
November 30, 2011 at 23:32:26
Stop the modem's DHCP service.

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#2
December 1, 2011 at 09:52:19
thanks for replay
bro the problem is when i stop modem's DHCP SERVICES .then internet dont work on my laptop well i am trying to install my server 2008 again if you could help me to configure it thanks in advance

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#3
December 1, 2011 at 09:57:42
Sounds like you didn't configure the server dns correctly concerning forwarders.

You don't reinstall 08 to solve that.

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Related Solutions

#4
December 1, 2011 at 11:59:41
Are you serving out the same range of addresses from 2008 as from the modem? If so, it should make no difference where the address is served from - except if served from 2008 it will also update the DNS records, and it will point clients to the DNS server on 2008 rather than the modem.

So either you are serving out the wrong address range or, more likely, you haven't configured the DNS server correctly. Can you access Internets by IP address; is it just the DNS lookup that is failing? What error messages do you get? As wanderer says, for starters you need to configure forwarders.


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#5
December 1, 2011 at 16:37:23
Once again thanks .I want to start from scratch again i have 1 route motorola its a cable modem
i have one extra linksys wireless router i have 1 win Server 2008 1 Win7 desktop
and 5 different laptops
The setup is like this now motorola cable modem -- linksys -- win server 2008
and all other computers are connect to motrola's builtin wifi
how should i design my network ?

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#6
December 2, 2011 at 08:11:54
set the motorola's dhcp server to give the AD server ip as dns
configure the forwarder in dns server by putting the isp dns server ips in.

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#7
December 2, 2011 at 09:45:33
Will the Motorola's DHCP server update the Windows DNS server if you do that? That's why I suggest using Windows for DHCP as well as DNS. I must admit that I'm not familiar with cable modems. Is it really the modem that is runing DHCP rather than the router?

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#8
December 2, 2011 at 11:15:26
The motorola dhcp will not dynamically update the ms dns server

"all other computers are connect to motrola's builtin wifi "

That's the issue I see. MS dhcp is not going to be able to give those wifi clients a dhcp ip. I have never seen dhcp passthru on a wireless router.

Now if he were using a AP attached to a switch the server was connected to that would be a different story.

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#9
December 2, 2011 at 11:40:06
Presumably the "modem" is a modem/router (or do plain cable modems also provide wireless connectivity?). So what's with the Linksys router? If all that's connected to it is the server computer, what's the point of it?

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#10
December 3, 2011 at 08:35:47
"It is behind a Motrola router that connects to our Cable Modem."
what linksys router?

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#11
December 3, 2011 at 11:39:44
My mistake! If the Motorola is a router and the server is plugged into it then why won't the clients pick up DHCP addresses from the server? (Trick question - I know that they will; that's how my home network is set up, and it works just fine.) Which brings me back to the question, why use DHCP from the Motorola router rather than the Windows server?

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