Forum Discussion
NimbostratusF5 DNS
Hello All,
I have two ISP links & for the same we create two listeners. in pool we create 8 VS for load balance 4 IP one ISP & 4 IP second ISP.
when we check dns from public i got my pool IP. is it right ?
because my understanding is when check nslookup we should get listeners IP than to pool ip.
Pleas correct me which ip i get listeners or pool IP ?
listeners two ip i have provide two register team bind against domain name .
2 Replies
Shaun_Simmons1Altostratus
To allow DNS to resolve, you only need one DNS listener IP: TCP and UDP
You are wanting to load balance multiple internal DNS servers and have one external IP to "listen" for DNS requests.
VIP(Public IP) -> Pool(multiple Private IP DNS servers)
Nslookup will show the DNS server's IP that is configured on your box (ipconfig /all DNS IP) and it will show the Non-Authoritive resolution for the FQDN you are looking up.
PS F:> nslookup foobar.com Server: lala.meow.blahblah.com Address: 10.1.1.11 <---My local Private IP DNS server seen via "ipconfig"
Non-authoritative answer: Name: foobar.com Address: 162.241.216.134
Google search to help understand "Recursive DNS"
David__PaschWhen we check dns from public i got my pool IP. is it right ? YES.
Pleas correct me which ip i get listeners or pool IP ? Pool IP.
Think of the GTM as a DNS server. The listener is like the IP:53 on the DNS server. The pool members are your Resource Records(A, MX, and so on.)
Hope it helps!
David Pasch
