I am not sure if you can actually do that with dns. But you can
certainly do that with a server load balancer. You can also do dns
round-robin but that only hits 50% of the time each A record. So if one
is down, it will hit that down host 50% of the time as well.

You can probably have both your NS server to point to the same IP. Then
do server load balancing for the host.



OITNE.Subscription@gmail.com wrote:
> I got a Main DNS (running on Unix) server with some A records to
> Windows Nt Servers. Now i want to create a failover for 1 of this a
> records. For exampe:
>
> ip Server 1= 10.0.0.1
> ip Server 2 =10.0.0.2
>
> normaly when pinging the a record, i get back the ip from Server 1
> (10.0.0.1). But now i want, that when Server 1 is down, the main dns
> server will automatic return the ip of server 2 (10.0.0.2)
>
> Is this posible? And if it is, How can i do it?
>
>