Query regarding NS record

[Florian CROUZAT]

babu dheen wrote on 2011-09-16:

> Hi,
>     Can anyone let me know how i can resolve the below requirement.
>
> Requirement:
>
> We have two offices. One is main office and another one is remote
> branch office. Now my company client requirement is that if main office
> DNS server is not reachable, all DNS query should be sent to branch
> office DNS server. How this can be acheived using BIND?
>
> For example, my company mail website is; mail.mycompany.com which is
> pointed as below in ISP name server.
>
> mail.mycompany.com        IN    NS    ns1.mainoffice.com
> mail.mycompany.com        IN    NS    ns1.branceoffice.com
>
>   Is the above record is correct or not?
>  Please suggest.
> Regards
> papdheen M
>
>
>
>

Babu,

Your example isn't failover, this is load balancing.
That's two different concepts.

Florian