Hello Jose,
If the primary does not react in specific time it switches to secondary.
Have a look here:
http://technet.microsoft.com/en-us/library/cc779517.aspx
If DNS server list is reprioritized, the DNS Client service resets the server
priority at periodic intervals. By default, the server priorities are reset
every 15 minutes.
For XP see here also:
http://support.microsoft.com/kb/320760/en-us
You can use nslookup for the used server and lot of other queries:
http://support.microsoft.com/kb/200525
Best regards
Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm
[Quoted Text] > Hello!
>
> I'd like to ask you, if there is a failback-mechanism in the
> DNS-client service to use the primary DNS-server again. For example, I
> use 10.0.0.1 as primary DNS-server and 10.0.0.2 as secondary
> DNS-server. 10.0.0.1 is offline when a client tries to resolve a
> record. Let's say, that 10.0.0.2 is able to resolve that record.
> Later, the 10.0.0.1 is back online, but the client (Windows XP) is
> still using 10.0.0.2.
>
> Are there some time-thresholds to failback? Where can I see, which
> server the DNS-client is actually using? Are there any differences
> between the MS operations systems?
>
> Thanks so much!
>
> Greetings,
> Jose
|