DNS Forwarding

[Troy Bruder]

Hello,

I'm managing several small Win2k3 implementations each with 4-5 internal DNS
servers.. For each environment, all of the DNS servers forward to a single
internal server who's forwarders are the DNS servers of the ISP. I'm was
assuming this is the optimal DNS configuration..

I've recently read that instead of forwarding to my ISP's DNS servers, I
should just resolve out the root hints... How is that more optimized?


Thanks,
Troy

 

[Enkidu]

Hello,

I'm managing several small Win2k3 implementations each with 4-5 internal DNS
servers.. For each environment, all of the DNS servers forward to a single
internal server who's forwarders are the DNS servers of the ISP. I'm was
assuming this is the optimal DNS configuration..

I've recently read that instead of forwarding to my ISP's DNS servers, I
should just resolve out the root hints... How is that more optimized?

That's not a technical question, it's a religious one.

I prefer forwarders because, assuming caching at the appropriate
points, there is less traffic over the Internet and hence less
Internet noise. Also there should be better response times for DNS
requests.

Supporters of the root hints approach believe that this is rubbish.

I don't know if any quantative studies have been done, and in any case
any experimental results will be very dependent on the configuration
that the testing is done on. On the networks that I've worked on DNS
appears to form a significant part of the traffic. Anything that
reduces that is GOOD. Even if it causes a minor but almost
unnoticeable performance hit. IMO, of course.

Cheers,

Cliff

 

[Troy Bruder]

Thanks! I was hoping I wasn't the only one using this theory!

I'll continue doing what I'm doing today.

Troy