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How to interpret these error/warning messages

Posted on 2008-06-09
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Last Modified: 2008-06-18
I was having both event id 1053 and 1054 in my logs  and also my workstations mentioned dc-problems so I decided to do run dcdiag /test:dns. This gave the following results

Warning adapter 00 50  fc  f8  e0  57 has dynamic ip address (can be a misconfiguration)

Error: Missing A record at DNS server 192.168.0.21: superserver5.richel.local

Warning: record registration not found in some network adapters.

I have no idea what to do next. You probably do.

Many thanks
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Question by:TheoRichel
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by:strongline
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DC should have static IP address configured.
If your DC doesn't have an A record in DNS, it will be a big problem.
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by:TheoRichel
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That computer has a static ip address and also the dns-server address (which is the same) is given in the network properties.I suppose that is what should be, but now I suddenly realise that the dhcp has excludes  numbers 1-10 whereas this server has nr 21 . However when I check DHCP it apparently has excluded that nr 21 as well.

Th TCP-properties of my outbound card also point to the local dns server. I suppose that is because of the forwarders there.

How do I put an A record in DNS?
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by:alikaz3
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You are getting: Warning adapter 00 50  fc  f8  e0  57 has dynamic ip address (can be a misconfiguration)

Do this:
open run: cmd
type ipconfig /all
look and see which adapter is 00 50  fc  f8  e0  57
Change that card to static Ip.

You mentioned your outbound card, could it be that card is on dynamic?
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by:TheoRichel
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@alikaz3 yes it is indeed my outbound card which is dynamic and I suppose that is what it should be? I wouldnt know which ip-nr to change it in.
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by:alikaz3
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Your outbound card should also have a static lan IP address. Is 192.168.1.2 taken? If it is, just go up to the next one available (you stated 1 - 10 are reserved in DHCP). Once you have done that reboot the server and see if you get the errors. DNS should start up after that.

Then again I may be confused as to what kind of setup you are using there. If this does not fix the problem, post back with more information (all servers and IP addresses used, router LAN IP used, etc.)
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by:TheoRichel
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??? Alikaz3: According to my ISP we do not have to configure our outbound nic I do not have a fixed IP addres, their DHCP-server gives me one, and I was told that I cannot use the range 192.168 outside, on ht einternet, it is reserved for lans.
My internal NIC (inbound) has a fixed ip: 192.168.0.21

What have I misunderstood?
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by:strongline
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Even though putting your DC facing internet is a very bad idea, you can ignore that "dynamic IP" warning as you know where it's coming from. As long as your internal NIC is static and able to register records in DNS.

what you can do:
 - disable DNS registration on external NIC
 - make sure your DNs is accepting Dynamic Updates
 - Make sure you are not using external DNS directly, you should use conditional forwarder
 - ipconfig /registerdns will register A record
 - restart netlogon service will register SRV records.
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by:alikaz3
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Ok so by "outbound card" you are talking about a LAN card, in your server, that is hooked directly into your broadband modem?


But I doubt you have it set up that way.... If it isn't connected that way (e.g. you are using a router), you don't have to worry about what they said. Your router is the DHCP client to the broadband network, then your computers/servers negotiate traffic via your LAN IP addresses, in which case you want both LAN cards to be on static IPs. If you are in fact using your server as a router, then you are going to follow strongline's suggestion, but I agree with him that it is a bad idea.... Let us know!
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by:alikaz3
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Sorry one sentence wasn't very clear:

**you don't have to worry about what they said.

they= your broadband company

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by:TheoRichel
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Alikaz3: No I dont have a router, my outbound nic is connected directly to my cablemodem. So that computer, my sbs server is the dhcp-client. I do not think strongline suggests to give my outbound nic a static ip address.The problem is apparently the fact that DCDIAG cannot find a A record for that server. I am running registerdns now to hopefully fix that.
Thanks
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by:TheoRichel
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RegisterDNS finished without errors.
DCDiag however still gives the same report about the missing A record, but I may have misread something. The sentence before talks about the outbound NIC and ends with a semicolon after which the remark about the A record is made. Could it be that it asks for an A record for my outbound NIC (which points to my internal dns at 192.168.0.21 where there are two forwarders).

How do I disable dns regsitration on my external nic? Simply remove the reference to my internal dns there?

Where do I make sure that dns accepots dynamic updates? Couldnt find it in the properties
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by:alikaz3
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Yes, I would say you are on the right track. Your outbound card should not be DNS-registering.
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by:alikaz3
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Take a look through this:
http://support.microsoft.com/kb/246804
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by:TheoRichel
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I removed that reference and ran dcdiag again and got a lot of errors. The domain failed the test and a lot of complains about forwarders. Should I run registerdns again?

Thanks
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by:TheoRichel
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Well registerdns didnt solve anything. The removal of the reference on my outbound nic to my internal dns server only produced complaints about the forwarders so I put it back and hope to hear from you.
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by:strongline
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To disable DNS registration:
NIC properties\TCP/IP Properties\DNS\clear the option at the bottom "register..."

In order to make "ipconfig /registerdns" work, the prerequisites is your DNS server accepts dynamic registering, which I stated already.
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by:TheoRichel
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Yes you stated already that my dns server ought to accept dynamic updates, but in the reference to KB 246804 I can only conclude that I must do something with the adaptor tab on the properties of my dns server, byt I do not have an adaptor tab.

Meanwhile I got rid of eventid 1053 through a correction of the pop3 server, but I am flooded with 1054 event id's.
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TheoRichel earned 0 total points
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Lo and behold, no more 1054 messages in my event log. It was a known problem happening with Opteron 64 processors. I downloaded the driver from here: http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_871_9033,00.html and presto!

Another thing seems to be that this can happen on workstations when the firewall for that station is up. I'll check into that.

DC Diag tells me that the domain passes the test so we'll leave it there. I am not a sysadmin and have more to do. Thanks for your time.
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