DNS Failover when one is down (Active Directory)

[Guest Pingusman]

Hi,

 

We have this architecture :

 

- Primary Domain Controller + DNS (1.1)

- Secondary Domain Controller + DNS (1.2)

- Roaming Profiles on a linux server with samba (1.3)

 

The two domain controller are master, for authentification it's working well

But we have a problem with the linux server, when the primary server is down, the linux server does'nt work

 

DNS on 1.3 :

Primary 1.1

Secondary 1.2

 

Example of a dns entry

 

DOMAIN.COM

* A 192.168.1.1

* A 192.168.1.2

 

This entry return randomly the primary or the secondary ip

 

When the primary is down :

 

On Windows 7 :

 

- First 2/3 min, ping domain.com return 1.1 or 1.2, so not working very well

- After 2/3min , ping domain.com always return 1.2 so it's working well

 

On Debian :

 

- ping domain.com always return a random ip, so it's not working good

 

 

Is there a configuration to make linux works as windows do ?

Something like filtering not responding ip in the dns request answer ?

 

Thanks

 

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