Avatar of Yann Shukor
Yann Shukor
Flag for France asked on

secondary DNS behavious when cutoff from primary DNS

Hi

One of my clients manages a central HQ, plus remote sites.

The HQ has a Windows 2008 acting as the primary DNS server,
while the Windows 2008 stand alone servers at the remote sites
all act as secondary DNS servers to the primary.  

The forwarding server of these secondary DNS servers is
set to the primary server, and not to the local ISP's DNS
- which to me seems wrong.

The remote site servers also run an in-house web app

When the remote site's Internet link goes down, the local
workstations continue to access the local web app unhindered.

Twenty four hours later, however, the workstations can't
access the web app anymore. The server hasn't been rebooted;
I'm not sure whether the workstation has been switched off
overnight, although I suppose it has.

The two solutions used up till now were connecting to the app
using the local server's IP address, or by inserting the local
server's FQDN and IP pair into the workstation's host file.

Obviously this type of situation doesn't happen too frequently.

What I'd like to know, the next time this happens, is what address
does the web app resolve to on the workstations when it fails ?

Any ideas ?
I'll add the responses asap to the two queries I formulated here
while writing my question.

thanks

yann
Apache Web Server

Avatar of undefined
Last Comment
Frabble

8/22/2022 - Mon
ASKER CERTIFIED SOLUTION
Frabble

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
or
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question
Experts Exchange is like having an extremely knowledgeable team sitting and waiting for your call. Couldn't do my job half as well as I do without it!
James Murphy