Re: DNS primary and secondary receiveing queries at the same time

2018-05-17 Thread Nico CARTRON
Hi Roberto, > On 17 May 2018, at 16:25, Roberto Carna wrote: > > Dear Tony, so you say that it's impossible what I want... > > In this scenario that my two DNS servers respond queries at the same > time, suppose the primary server goes downhow do clients know that > they have to query the s

Re: DNS primary and secondary receiveing queries at the same time

2018-05-17 Thread Warren Kumari
On Thu, May 17, 2018 at 4:26 PM Roberto Carna wrote: > Dear Tony, so you say that it's impossible what I want... > In this scenario that my two DNS servers respond queries at the same > time, suppose the primary server goes downhow do clients know that > they have to query the secondary DNS

Re: DNS primary and secondary receiveing queries at the same time

2018-05-17 Thread Roberto Carna
OK, now I understandthank you very much !!! Regards. 2018-05-17 11:25 GMT-03:00 Roberto Carna : > Dear Tony, so you say that it's impossible what I want... > > In this scenario that my two DNS servers respond queries at the same > time, suppose the primary server goes downhow do clients k

Re: DNS primary and secondary receiveing queries at the same time

2018-05-17 Thread Roberto Carna
Dear Tony, so you say that it's impossible what I want... In this scenario that my two DNS servers respond queries at the same time, suppose the primary server goes downhow do clients know that they have to query the secondary DNS server at this moment? Thanks again. 2018-05-17 11:19 GMT-03:

Re: DNS primary and secondary receiveing queries at the same time

2018-05-17 Thread Warren Kumari
On Thu, May 17, 2018 at 4:07 PM Roberto Carna wrote: > Hi people, I've implemented two BIND9 servers for my company, one as > primary public DNS server and the other as secondary public DNS > server. > I always believed that all the client queries coming from Internet go > to the DNS primary ser

Re: DNS primary and secondary receiveing queries at the same time

2018-05-17 Thread Roberto Carna
Dear Nico, my BIND servers are authoritativethey have delegated several zones. 2018-05-17 11:12 GMT-03:00 Nico CARTRON : > Hi Roberto, > > On 17 May 2018, at 16:06, Roberto Carna wrote: > > Hi people, I've implemented two BIND9 servers for my company, one as > primary public DNS server and th

Re: DNS primary and secondary receiveing queries at the same time

2018-05-17 Thread Tony Finch
Roberto Carna wrote: > > I always believed that all the client queries coming from Internet go > to the DNS primary server, and if it is down, just in this case go to > the DNS secondary server. It can't happen that way because there's no way for a resolver to tell which is which. Tony. -- f.an

Re: DNS primary and secondary receiveing queries at the same time

2018-05-17 Thread Nico CARTRON
Hi Roberto, > On 17 May 2018, at 16:06, Roberto Carna wrote: > > Hi people, I've implemented two BIND9 servers for my company, one as > primary public DNS server and the other as secondary public DNS > server. > > I always believed that all the client queries coming from Internet go > to the DN