DNS Servers not Communicating

Wavmeister · 02-14-2008, 02:38 PM

Two of our win2000 dns servers stopped communicating with each other a while back, thus no longer replicating. We have a primary and a secondary. It used to be that on NS1 it would also be connected to NS2. We could click NS2 and see what was there.

Now, I try to add a connection to NS2, and it says it's not available. I open cmd and "ping ns2" and it pings just fine.

I have attached an image for you to see what I see. I appreciate any help. Thx.

**XtabbedoutX** · 02-16-2008, 09:26 PM

check the trust between the two servers on the domain. You can find this in AD sites and services.

Wavmeister · 02-17-2008, 08:03 AM

I'm not finding that anywhere. Could you be more specific? Thx.

**XtabbedoutX** · 02-17-2008, 10:01 AM

My Mis-Take. DNS has to be properly running before you can even set up a trust. Let me look at something else real quick.

**XtabbedoutX** · 02-17-2008, 10:13 AM

Can you ping the server by it's name? "ping -a ns2" And see if it resolves. Also check the AD to see how that server is listed.

Wavmeister · 02-18-2008, 06:39 AM

Just tested again, same as shown in first post image, I am able to ping each other by name from each machine. I'm not sure what you mean by AD. Bear in mind I recently acquired responsibility for these servers, so am not familiar with the DNS gui setup as I am a Linux guy. Long before this, I know they communicated properly with each other. However, at one point evidently something was changed, but I have no idea what that might be. Now I am attempting to fix it since it has become my responsibility to do so. However, I am typically in the learning stages of windows server related. I appreciate the help.

**XtabbedoutX** · 02-18-2008, 09:34 AM

No run this in the command prompt and see if it will resolve

Code:

ping -a ns2

Wavmeister · 02-18-2008, 10:19 AM

Yes, it does.

**XtabbedoutX** · 02-18-2008, 10:27 AM

Does NS2 Have any other function besides a DNS server?

Wavmeister · 02-18-2008, 10:30 AM

No, both operate as dns only.

RGV · 02-18-2008, 11:03 AM

Sorry to be obvious but is the 'DNS Server' service started ok on NS2?

If so, what happens when you use the IP address of NS2 in the DNS 'Select Target Computer" window rather than the name 'NS2'?

**XtabbedoutX** · 02-18-2008, 11:36 AM

That is the way I was think RGV. I was wandering if the service has disappeared or not or is not starting properly.

Wavmeister · 02-18-2008, 12:36 PM

NS is running on both in services, however, I ran into this... this is ON ns1 when getting to services. However, other image past that point shows it is running.

Wavmeister · 02-18-2008, 12:55 PM

My bad... IIS shouldnt be running on these. It was installed, but disabled, had the snap-in in that section, which was causing that error. I removed IIS and the error is now gone. Had nothing to do with the dns problem..

**XtabbedoutX** · 02-18-2008, 12:58 PM

So everything is good now?

Wavmeister · 02-18-2008, 01:23 PM

No, original problem is still there. All I did was find a different issue that I thought was related, and only the new issue was fixed. This seems to be unusual, I cant find much in Google on this particular problem.

RGV · 02-18-2008, 03:37 PM

It really looks as though DNS isn't running properly on NS2 from the description so far.

The screenshots you originally posted seem to sugest you're trying to open DNS remotely (From NS1?) - what happens when you try and open DNS at the console directly on NS2?

As an aside - Are these servers running as standalone DNS servers or are they in an Active Directory domain? If the latter are they both Domain Controllers?

Wavmeister · 02-19-2008, 07:29 AM

Yes I can access dns on ns2. Neither one can see the other. For each machine to trust each other, you have to have Active Directory, which isnt installed. So someone either uninstalled that, or they were NT4 and someone upgraded them to 2000. I know under NT4 you could create a trust without AD, but with 2000 AD is required. I know of no other way to do it... but I dont know what will happen with existing DNS if I install AD now.

**XtabbedoutX** · 02-19-2008, 06:12 PM

Are both joined to the AD as DNS. If they are both running DNS properly they should both be listed as DNS servers. Check that and let us know.

02-16-2008, 09:26 PM	#2 (permalink)
XtabbedoutX TSF Enthusiast Join Date: Sep 2007 Location: Oklahoma City Posts: 1,189 OS: Server 2K3 R2 SP 2, Server 2K SP4, XP PRO SP 3, Mac OS X 10.5, iPhone My System	Re: DNS Servers not Communicating check the trust between the two servers on the domain. You can find this in AD sites and services.

02-17-2008, 08:03 AM	#3 (permalink)
Wavmeister Registered User Join Date: Feb 2008 Posts: 9 OS: XP Pro	Re: DNS Servers not Communicating I'm not finding that anywhere. Could you be more specific? Thx.

02-17-2008, 10:01 AM	#4 (permalink)
XtabbedoutX TSF Enthusiast Join Date: Sep 2007 Location: Oklahoma City Posts: 1,189 OS: Server 2K3 R2 SP 2, Server 2K SP4, XP PRO SP 3, Mac OS X 10.5, iPhone My System	Re: DNS Servers not Communicating My Mis-Take. DNS has to be properly running before you can even set up a trust. Let me look at something else real quick.

02-17-2008, 10:13 AM	#5 (permalink)
XtabbedoutX TSF Enthusiast Join Date: Sep 2007 Location: Oklahoma City Posts: 1,189 OS: Server 2K3 R2 SP 2, Server 2K SP4, XP PRO SP 3, Mac OS X 10.5, iPhone My System	Re: DNS Servers not Communicating Can you ping the server by it's name? "ping -a ns2" And see if it resolves. Also check the AD to see how that server is listed.

02-18-2008, 06:39 AM	#6 (permalink)
Wavmeister Registered User Join Date: Feb 2008 Posts: 9 OS: XP Pro	Re: DNS Servers not Communicating Just tested again, same as shown in first post image, I am able to ping each other by name from each machine. I'm not sure what you mean by AD. Bear in mind I recently acquired responsibility for these servers, so am not familiar with the DNS gui setup as I am a Linux guy. Long before this, I know they communicated properly with each other. However, at one point evidently something was changed, but I have no idea what that might be. Now I am attempting to fix it since it has become my responsibility to do so. However, I am typically in the learning stages of windows server related. I appreciate the help.

02-18-2008, 09:34 AM	#7 (permalink)
XtabbedoutX TSF Enthusiast Join Date: Sep 2007 Location: Oklahoma City Posts: 1,189 OS: Server 2K3 R2 SP 2, Server 2K SP4, XP PRO SP 3, Mac OS X 10.5, iPhone My System	Re: DNS Servers not Communicating No run this in the command prompt and see if it will resolve Code: ping -a ns2

02-18-2008, 10:19 AM	#8 (permalink)
Wavmeister Registered User Join Date: Feb 2008 Posts: 9 OS: XP Pro	Re: DNS Servers not Communicating Yes, it does.

02-18-2008, 10:27 AM	#9 (permalink)
XtabbedoutX TSF Enthusiast Join Date: Sep 2007 Location: Oklahoma City Posts: 1,189 OS: Server 2K3 R2 SP 2, Server 2K SP4, XP PRO SP 3, Mac OS X 10.5, iPhone My System	Re: DNS Servers not Communicating Does NS2 Have any other function besides a DNS server?

02-18-2008, 10:30 AM	#10 (permalink)
Wavmeister Registered User Join Date: Feb 2008 Posts: 9 OS: XP Pro	Re: DNS Servers not Communicating No, both operate as dns only.

02-18-2008, 11:03 AM	#11 (permalink)
RGV Registered User Join Date: Nov 2004 Posts: 10 OS: Win98, Win XP, W2K Server	Re: DNS Servers not Communicating Sorry to be obvious but is the 'DNS Server' service started ok on NS2? If so, what happens when you use the IP address of NS2 in the DNS 'Select Target Computer" window rather than the name 'NS2'?

02-18-2008, 11:36 AM	#12 (permalink)
XtabbedoutX TSF Enthusiast Join Date: Sep 2007 Location: Oklahoma City Posts: 1,189 OS: Server 2K3 R2 SP 2, Server 2K SP4, XP PRO SP 3, Mac OS X 10.5, iPhone My System	Re: DNS Servers not Communicating That is the way I was think RGV. I was wandering if the service has disappeared or not or is not starting properly.

02-18-2008, 12:55 PM	#14 (permalink)
Wavmeister Registered User Join Date: Feb 2008 Posts: 9 OS: XP Pro	Re: DNS Servers not Communicating My bad... IIS shouldnt be running on these. It was installed, but disabled, had the snap-in in that section, which was causing that error. I removed IIS and the error is now gone. Had nothing to do with the dns problem..

02-18-2008, 12:58 PM	#15 (permalink)
XtabbedoutX TSF Enthusiast Join Date: Sep 2007 Location: Oklahoma City Posts: 1,189 OS: Server 2K3 R2 SP 2, Server 2K SP4, XP PRO SP 3, Mac OS X 10.5, iPhone My System	Re: DNS Servers not Communicating So everything is good now?

02-18-2008, 01:23 PM	#16 (permalink)
Wavmeister Registered User Join Date: Feb 2008 Posts: 9 OS: XP Pro	Re: DNS Servers not Communicating No, original problem is still there. All I did was find a different issue that I thought was related, and only the new issue was fixed. This seems to be unusual, I cant find much in Google on this particular problem.

02-18-2008, 03:37 PM	#17 (permalink)
RGV Registered User Join Date: Nov 2004 Posts: 10 OS: Win98, Win XP, W2K Server	Re: DNS Servers not Communicating It really looks as though DNS isn't running properly on NS2 from the description so far. The screenshots you originally posted seem to sugest you're trying to open DNS remotely (From NS1?) - what happens when you try and open DNS at the console directly on NS2? As an aside - Are these servers running as standalone DNS servers or are they in an Active Directory domain? If the latter are they both Domain Controllers? Last edited by RGV; 02-18-2008 at 04:05 PM.

02-19-2008, 07:29 AM	#18 (permalink)
Wavmeister Registered User Join Date: Feb 2008 Posts: 9 OS: XP Pro	Re: DNS Servers not Communicating Yes I can access dns on ns2. Neither one can see the other. For each machine to trust each other, you have to have Active Directory, which isnt installed. So someone either uninstalled that, or they were NT4 and someone upgraded them to 2000. I know under NT4 you could create a trust without AD, but with 2000 AD is required. I know of no other way to do it... but I dont know what will happen with existing DNS if I install AD now.

02-19-2008, 06:12 PM	#19 (permalink)
XtabbedoutX TSF Enthusiast Join Date: Sep 2007 Location: Oklahoma City Posts: 1,189 OS: Server 2K3 R2 SP 2, Server 2K SP4, XP PRO SP 3, Mac OS X 10.5, iPhone My System	Re: DNS Servers not Communicating Are both joined to the AD as DNS. If they are both running DNS properly they should both be listed as DNS servers. Check that and let us know.