We have a total win2k shop with 5 win2k servers and 2 routers.
My users are peridically loosing their DNS sometimes as many as 6 times per day.
WE have two gateways a Cisco 2600 router which is a gateway to our corporate mainframe, and a cisco 1720 router which is our gateway to the internet.

I have tried using the 2600 as the default gateway and our local DNS server as the primary DNS but this fails to register my internet DNS Servers.

I have tried to use the 1720 as the default gateway and the internet DNS as the Primary DNS and this seems to work for a while.

The second case does seem to register the local and internet DNS but after a while we lose the internet DNS. At that point I can still ping any address but no sites i.e. "www.yahoo.com" I can use nslookup and see the dns server and resolve the name to an ip address.

If anyone has any suggestions they will be greatly appreciated.

Thanks
stuck in DNS Hell
Gary