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Aug 3rd, 2009
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Ummm, Don't know what's going on !!

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Hello everyone, i am a newbie so please bare with me cause it's been only 4 days since i started working with windows server 2003,
I've made a DHCP server and the clients are getting their IPs correctly and the Internet service is working on the server computer, the only problem i am having is that the client still can't surf which seems it's something about DNS, the following is the statics i have:

1- Incoming Internet Service (from the ISP):-
IP (DHCPed): 192.168.0.111
Subnetmask: 255.255.255.0
Gateway : 192.168.0.1
DNS1 : 208.67.222.222
DNS2 : 208.67.220.220
----------------------------------------------

2- Router (is used to avoide the 255.255.255.0 mask problem from the ISP):-
IP (DHCPed) : 192.168.0.111
Scope(DHCP) : 10.0.0.3 - 10.0.0.254
subnet mask : 255.255.255.0
----------------------------------------------

3- Windows Server:-
A- WAN (DHCPed)
B- LAN:-
IP : 192.168.0.1
Subnet: 255.255.255.0
Scope: 192.168.0.3 - 192.168.0.254


PS: I've tried several DNS's, the origion DNS(208.67.222.222, 208.67.220220), as well as 10.0.0.1, 10.0.0.50 (the WAN DHCPed IP) but nothing happened.


any help will be very appreciated, Thanks in advance
Last edited by JEESco; Aug 3rd, 2009 at 1:05 pm.
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Re: Ummm, Don't know what's going on !!

Is the information listed under "1 - ISP" the information they sent you on paper to configure your device or is it the ISP's router and you have another router of your own behind theirs?
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Re: Ummm, Don't know what's going on !!

I get these information when I put their connection on another independent PC, and then i called them to make sure of it and was correct.
BTW they're using mikrotik as their own server
Last edited by JEESco; Aug 3rd, 2009 at 1:12 pm.
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Re: Ummm, Don't know what's going on !!

So does the ISP have a router in your facility?
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Re: Ummm, Don't know what's going on !!

yup, as i think, they are routing using mikrotik but i can't reconfigure anything
Last edited by JEESco; Aug 3rd, 2009 at 1:16 pm.
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Re: Ummm, Don't know what's going on !!

Oh i forgot to mention that if i disattach the windows server pc, and connect clients directly to the router everything works like charm.
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Re: Ummm, Don't know what's going on !!

You have two DHCP servers on your network. Your Windows 2003 server and your ISP's router. Can you log into the router? If so log in and turn DHCP off. If you can't contact your ISP and have them do it.

All 10.x.x.x addresses are private class A addresses not public internet addresses.
Last edited by Freaktech; Aug 3rd, 2009 at 1:27 pm.
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Re: Ummm, Don't know what's going on !!

Click to Expand / Collapse  Quote originally posted by Freaktech ...
You have two DHCP servers on your network. Your Windows 2003 server and your ISP's router. Can you log into the router? If so log in and turn DHCP off. If you can't contact your ISP and have them do it.

All 10.x.x.x addresses are private class A addresses not public internet addresses.
Thanks Freaktech for replying but actually i have 3 DCP routers, the ISP router, the windoes server router and the router in between them cause of their subnet mask.

The problem is not with the 10.0.0.x class, because at my home i have connection from another ISP which its IPs are from this class ( the A class), and i didn't have problems with making a small network at my home.

But i am going to change it and see if it works
Last edited by JEESco; Aug 3rd, 2009 at 1:40 pm.
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Re: Ummm, Don't know what's going on !!

Click to Expand / Collapse  Quote originally posted by JEESco ...
Thanks Freaktech for replying but actually i have 3 DCP routers, the ISP router, the windoes server router and the router in between them cause of their subnet mask.

The problem is not with the 10.0.0.x class, because at my home i have connection from another ISP which its IPs are from this class ( the A class), and i didn't have problems with making a small network at my home.

But i am going to change it and see if it works
I wasn't saying there was a problem with it 10.x.x.x. if that's the class you want to use. But you are trying to use a Class A address that has a submask of 255.0.0.0 with a Class C that has submask of 255.255.255.0. What is your third DHCP server handing out? What is your Gateway? Do you have routes from each scope on the routers to communicate? How many systems are on your network? Is it necessary to subnet?
Last edited by Freaktech; Aug 3rd, 2009 at 1:45 pm.
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Re: Ummm, Don't know what's going on !!

now the mid router (which is in between my server and their server) is giving 172.20.0.x DHCP and subnet 255.255.255.0, and the windows DHCP server is 10.10.10.x subnet 255.255.255.0 and i am still getting the same thing, just like before.

about your questions, there's only one PC which is the windows server PC behind the mid-router between the windows server and the ISP router, then the cliens those would connect to the windows server (the end users) may reach up to 200 - 250 client.

and i am using the third DHCP server (windows server) to control bandwith and also to have multi roles , 3 roles for each group.
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