DNS question
Hi, I am from Spain, excuse my English have 3 DC 2008 r2 with DNS integrated AD and as say this link: http://technet.microsoft.com/es-es/library/dd378900(v=ws.10).aspx: "Add the loopback IP address to the list of DNS servers on all active interfaces. The loopback IP address should not be the first server in the list." Is this in case DNS members or DNS integrated AD? In my case (DNS integrated AD) can i add the loopbackp IP the first to he list of DNS servers? Thanks for all
September 12th, 2012 6:57am

instead of loop back address give the direct address of your own server. Example if your server ip address is 192.168.0.1 give 192.168.0.1 in the dns.http://www.arabitpro.com
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September 12th, 2012 7:11am

The Microsoft KB say loopback address http://technet.microsoft.com/es-es/library/ff807362(v=ws.10).aspx "DNS: DNS servers on <adapter name> should include the loopback address, but not as the first entry" Why i configure my own IP instead loopback? Is not the same? Thank for all for you reply
September 12th, 2012 7:37am

have no Idea why BPA says that personally I never ever use the loopback address on NIC as loop back is the machine itself. If you have multiple DNS servers I suggest to configure the other DNS server as preferred and itself as secondary DNS on the NIC, this will speed up booting and starting netlogon service/AD if a reboot of ONE DC/DNS is required.http://www.arabitpro.com
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September 12th, 2012 7:48am

Thanks for your information, i test first this configuration before apply Sorry, what is BPA?
September 12th, 2012 7:52am

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September 12th, 2012 7:53am

Hi, Based on the article: The inclusion of its own IP address in the list of DNS servers improves performance and increases availability of DNS servers. However, if the DNS server is also a domain controller and it points only to itself for name resolution, it can become an island and fail to replicate with other domain controllers. For this reason, use caution when configuring the loopback address on an adapter if the server is also a domain controller. The loopback address should be configured only as a secondary or tertiary DNS server on a domain controller. Resolution Add the loopback IP address to the list of DNS servers on all active interfaces. The loopback IP address should not be the first server in the list. So it is said that a DNS server should have its own IP as the secondary DNS server. For a DC, it is the same. Loopback IP is 127.0.0.1, it is point to the local machine itself. So set the loopback IP address as the second server in the DNS server list, it is same as set itself as its DNS server. Regards, Yan LiYan Li TechNet Community Support
September 17th, 2012 3:39am

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