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my setup &nbsp;look like this .<br />
<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Domain exmaple.com<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 10.2.1.1 &nbsp;--- support.example.com<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;10.2.1.2 &nbsp;--- &nbsp;support.example.com<br />
&nbsp;&gt; &nbsp;nslookup &nbsp;support.example.com<br />
<br />
Name: &nbsp; support.example.com<br />
Address: 10.2.1.1<br />
Name: &nbsp;support.example.com<br />
Address: 10.2.1.2<br />
<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; This &nbsp;idea &nbsp;is to have backup ip &nbsp;, &nbsp;any time only one &nbsp;ip will &nbsp;be live &nbsp;. &nbsp; what &nbsp;will happen &nbsp;when user &nbsp;browse for &nbsp;support.example.com &nbsp;. &nbsp;will it affect &nbsp;performance .<br />
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my setup  look like this .

            Domain exmaple.com
            10.2.1.1  --- support.example.com
             10.2.1.2  ---  support.example.com
 >  nslookup  support.example.com

Name:   support.example.com
Address: 10.2.1.1
Name:  support.example.com
Address: 10.2.1.2

              This  idea  is to have backup ip  ,  any time only one  ip will  be live  .   what  will happen  when user  browse for  support.example.com  .  will it affect  performance .



DNS  A RECORD round robin  Doubt

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.