Internet Down:DNS having some issue
I hve one 2008 server also ADDS. my problem is am not getting internet. following error occurd in event logs. just check the errors."DNS server is waiting for Active Directory Domain Services (AD DS) to signal that the initial synchronization of the directory has been completed. The DNS server service cannot start until the initial synchronization is complete because critical DNS data might not yet be replicated onto this domain controller. If events in the AD DS event log indicate that there is a problem with DNS name resolution, consider adding the IP address of another DNS server for this domain to the DNS server list in the Internet Protocol properties of this computer. This event will be logged every two minutes until AD DS has signaled that the initial synchronization has successfully completed."this is the error i got in event log.if i restart the dns then vl get internet for 2mints. after that vl not get. its a huge issue. any body having any idea??Please give the reply..
July 14th, 2009 3:51pm
This event is normal if you jus recently promoted the domain controller. It sounds like the 2008 Domain controller is also a DNS server and it sounds like your AD domain is using integrated DNS. If so, this is a normal scenario.The problem is that DNS is not replicating from your other domain controllers to this one. We need to figure out why. I would suggest temporarily changing your IP settings on the affected DC to use another DC for DNS. You can then restart the netlogon service. This will register itself in the other DNS servers database and also start the inbound replication procedure over again.If that does not work, I would check OTHER domain controllers to see if they have replication problems. This wuld be logged in the event log of each affected server.If none of that helps, please post information regarding what other domain controllers you have in the domain and what their IP settings are.oh, and BTW rule out any firewall/blocked ports...
Mike Crowley A+, Network+, Security+,
MCT, MCSE, MCTS, MCITP: Enterprise Administrator / Messaging Administrator
Free Windows Admin Tool Kit Click here and download it now
July 17th, 2009 1:30am
Oh, and the fact that you cannot get to the internet also screams DNS. please elaborate on who can and who cannot access the internet on your network. even if it has incomplete AD data, default DNS server settings allow for internet name resolution via root hints, so we would need to examine the DNS forwarding configuration as well.
Mike Crowley A+, Network+, Security+,
MCT, MCSE, MCTS, MCITP: Enterprise Administrator / Messaging Administrator
July 17th, 2009 1:32am
I agree with Mike, just point your preferred DNS to some other domain controller and check if you have replication issue.Check if your zone is set for domain wide replication or forest wide replication.
Free Windows Admin Tool Kit Click here and download it now
July 21st, 2009 9:35pm