DNS not resolving then suddenly works

[GenTrac]

We have broadband internet in our company through a PIX firewall. Our DHCP and DNS also on a local W2K server. Internet is given to certain users by using a different subnet and reserved IP's. All our workstations in the company have no problem logging onto the domain or resolving internal names.
All of a sudden our broadband stopped working or should I say thought stopped. To make a long story short once I used our service provider's DNS address as alternate address in my laptop's config I was able to surf the web and also resolve the LAN as normal. Now my question what would make our DNS server stop resolving or forwarding the name queries? What I found a while ago is that it suddenly start to work after a random time, would that make sense to anyone?

 

[GlenJohnson]

Have you checked the logs on the dns server? Anything strange?

Glen A. Johnson
If you're from Northern Illinois/Southern Wisconsin feel free to join the Tek-Tips in Chicago, Illinois Forum.
TTinChicago
Johnson Computers

 

[GenTrac]

Yes I checked the log but nothing really pops up that could have this effect. The DNS server just suddenly seems to forward requests and work again. this is really odd. I am going to add another forwarder to our DSL provider's DNS server and see what happens when clients access the web...