Multiple NICs and default DNS order?
I have servers with two NIC cards installed.
One nic is for the private internal network with active directory and the other nic is for the public internet.
The internal nic references an internal DNS server used by active directory. The external nic references our public DNS server which is used to resolve all of our dot com names for the world at large.
When I open a command prompt on the server and I enter "nslookup" it appears to default to the internal active directory DNS server on the internal IP.
What controls the order of which nic is polled first and responds with the DNS it has defined for it? I tried setting the interface metric to 1 and 2 and also to 2 and 1 and it didn't seem to have any affect at all. Is it the order of the PCI slots or just dumb luck?????
Regarding the interface metric...is it wise to manually set the priority for that route or should I just let the system choose via the "automatic" setting? I am wondering if there is any performance benefit to one versus the other? For example, my SQL server might benefit from a setting of 1 on the internal nic whereas the external nic could have a setting of 2 since its only used for ocassional remote access. Is my understanding of how that metric works correct or am I wasting time thinking about it?
Thanks!
