DNS - Unexplained Behaviour

Hi All

I have two Windows 2003 servers operating within my LAN, each with static IPs (*.*.*.7 -a domain controller and *.*.*.8 -the PDC).  The PDC is where we have configured the DNS zone, a copy is being replicated onto the DC

For the PDC, I have the DNS server set to *.*.*.8 (its own address), while for the other DC, I have the PDC's IP.  My DHCP service is provided by my Netscreen firewall, and there we have identified the DC's IP as the DNS server.

My problem is that over the last six months we have had a recurring situation where one or both of the machines loses its ability to surf the internet.  Investigations show that they are not able to ping externally by IP or by name.  We have found that the situation is resolved simply by changing the static IP to some other number within the range.

Why should this be happening?  We are not making any changes to the DNS configuration and cannot identify anything which might trigger the loss of this service

Thanks
briteeyezAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

crissandCommented:
Configure the scope of the dhcp server not to include the dc's addresses. And better go to domain integrated dhcp and disable the dhcp of the netscreen firewall.

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Networking

From novice to tech pro — start learning today.