DNS Problem

  • Thread starter Thread starter Andy Sheley
  • Start date Start date
A

Andy Sheley

I changed the IP address of the domain controller, and
then all the client machines couldn't find the server
unless I used its actual IP address instead of the servers
name. I ended up changing the IP address back to what it
was, and my internal network is working okay, but if I
type the URL of something on the Internet, it gets a DNS
error in internet explorer. I assume their is some DNS
server error not forwarding IP request. I noticed on the
client machines when i type IPCONFIG the connection
specific DNS suffix is blank. I seem to remember before
it would list the name of the server where DNS is
running. Any ideas??????

Thanks,
Andy
 
Your post is one big paragraph. Let's see if we can sort out these mutliple
issues below...

Andy Sheley said:
I changed the IP address of the domain controller, and
then all the client machines couldn't find the server
unless I used its actual IP address instead of the servers
name. I ended up changing the IP address back to what it
was, and my internal network is working okay
Click to expand...

After you changed the IP address of the DC, did you also run an:
ipconfig /registerdns so it will update the new IP address you just changed
it to? Then you would also want to clear the DNS serer cache. (Rt-click DNS
server name in the DNS console, click "Clear-cache").

If the client machine was already up and running, it would probably have had
the old IP address cached on the local macine. We would probably needed to
clear the cache on the client side as well by typing in a cmd prompt,
ipconfig /flushdns.

but if I
type the URL of something on the Internet, it gets a DNS
error in internet explorer. I assume their is some DNS
server error not forwarding IP request.
Click to expand...

Possibly. The only thing I can think of is if the DC is also your DNS server
and the clients were "pointing" to the old IP address so therefore it can't
get to the new IP address because you didn't change it in DHCP (Option 006).
I noticed on the
client machines when i type IPCONFIG the connection
specific DNS suffix is blank.
Click to expand...

Weel, depends, did you have Option 015 set to your domain suffix? If so, and
yhou didn't get an IP address this time, (IP shows as all zeros or as a
169.254.x.x number).
I seem to remember before
it would list the name of the server where DNS is
running. Any ideas??????
Click to expand...

As I'm thinking that the DC, DNS and DHCP server are all the same machine
and is what's probably causing all your problems. Carefully plan any IP
changes with any servers since they can disrupt productivity.
Thanks,
Andy
Click to expand...


--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS IS" with no warranties.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
Thank you very much, its working now! I did
ipconfig /registerdns set the option 006 in DHCP to
point to my DC which is also running DNS & DHCP, did
ipconfig /flushdns on client and everythings working.
Thanks again for your help.

Andy Sheley
 
In
Andy Sheley said:
Thank you very much, its working now! I did
ipconfig /registerdns set the option 006 in DHCP to
point to my DC which is also running DNS & DHCP, did
ipconfig /flushdns on client and everythings working.
Thanks again for your help.

Andy Sheley
Click to expand...

Sounds good Andy!
Have a great weekend!

--
Regards,
Ace

Please direct all replies to the newsgroup so all can benefit.
This posting is provided "AS IS" with no warranties.

Ace Fekay, MCSE 2000, MCSE+I, MCSA, MCT, MVP
Microsoft Windows MVP - Active Directory
 
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