Domain Controllers relies on one another

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i inherited server system , told server domain controller. for years added accounts, servers, etc on domain controller. made changes , took other servers out of production. when doing noticed when what thought main server rebooted not load dns or ad. after doing commands found pdc, master, etc roles were on server turned off. transferred roles. after rebooting again it still not working without old server. decided fire old server , had same issues loading dns, ad, etc. we fired old server , then server thought main(and since transferred roles it). @ first both servers unable access dns , ad after few minutes running on both. appears rely on 1 another. we ran dcdiag on both , see no issues. 1 thing odd neither server has same items within netlogon. on old server folder within sysvol looks , actual folder other server looks shortcut. should mention old server windows 2003 , other 2008 r2.

my question why 1 rely on each other , how make old server no longer required? ensured tcp properties/primary dns set itself. ran dcdiag /fix fine along checking items nslookup. @ complete loss.

i have errors within event viewer not directing me possible solutions. heck of tried creating domain on windows 2012 server , select 1 server replication each time adds old server dns. thought maybe old server main dns when @ each server dns point if 1 off dns inaccessible. odd part once have can shut old server off , works fine until reboot server. both servers gc too.

any advice?

dns registration on dcs should enabled. can run ipconfig /registerdns to enable or manually.

also, not enable nic teaming on dcs. thing dcs should not multihomed.

i recommend make these corrections , then:

  • remove wrong dns records dcs dns servers
  • force registration of dcs using ipconfig /registerdns , restarting netlogon

to check dns records registered, can use nslookup to check , srv records:
http://social.technet.microsoft.com/wiki/contents/articles/29184.nslookup-for-beginners.aspx
http://support.microsoft.com/kb/241515

this posting provided no warranties or guarantees , , confers no rights.

ahmed malek

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Windows Server  >  Directory Services



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