Re: IP pool setup in DNS for ISP

"JaredH" <JaredH@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:6D62CDDC-726E-4BE9-AE95-BAE931CC3D7F@xxxxxxxxxxxxxxxx
> I'm working on updating our DNS records so that the IP addresses in our
> dial-up IP pools will resolve correctly when forward and reverse DNS
> information is compared. I created sub-domains to help keep everything
> organized under our domain in the forward lookup zone. After adding all
of
> the entries to the zone file, which isn't in production yet, the file grew
> from about 15k to 850k with the addition of the roughly 26,000 addresses.

That's about 75 bytes per record so it makes general sense.

> My
> question is will the size of this file create any performance problems
once
> put in production? I figured I would put these IP pools under their own
> domain seperate from entries for mail, web and so on under our primary
> domain. Under the domain I have a sub-domain and under that I have about
100
> other sub-domains each with 254 entries for the /24. Looking for either
some
> reassurance that I'm doing this correctly or for a better solution just in
> case my current configuration would be inviting disaster.

No one can tell your for sure but it sounds basically workable.

The size is not likely to cause any problem -- after all, at less
than a 1 MB it is all going to be in MEMORY cache if it is
used actively.

It's not a small setup, but it isn't huge either. The total number
of queries will likely be the larger issue and that can be handled
up to a point by adding more DNS servers (as secondaries).

How about network bandwidth?

Of course you will need to test and monitor to see if you disk,
net, and CPU can handle the load but it really isn't huge.


--
Herb Martin, MCSE, MVP
Accelerated MCSE
http://www.LearnQuick.Com
[phone number on web site]


.

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