Re: Changing DNS forwarder server
- From: "Jorge Silva" <jorgesilva_pt@xxxxxxxxxxx>
- Date: Wed, 24 Oct 2007 20:09:05 +0100
Hi
See inline:
I'm making a big change in our network.Ok.
For outbound Internet Host to IP resolution, our domain controllers go
to a
central forwarder server which has DNS installed on it with root hints
of
well known top level DNS servers on the Internet. So this server is
doing all the resolving of Internet host names for clients within our
network.
The plan is to change that server to point to a different server.IMO you should first point the DCs/DNS to the new Forwarders and then if
My plan for doing it is to basically stop the DNS services running on
the
current one and point the domain controllers to the other one (via the
forwarders tab in the DNS properties).
everything is Ok you can take off the old ones from network. If NOT OK you
can re-point them to the original position.
When I go into the current one and look a the Cached Lookups, there isYou shouldn't have any SOA record there, you should have NS, A, CNAME...
a massive amount of DNS entries from all over the Internet. Also, the
SOA record in the Cached Lookups is under .(root) > net. Is it normal
for that to be there?
The SOA record refers to what server and what Zone?
I'm thinking that SOA record was probablyThe SOA Record should exist to in the Zones that your server is
manually put in there (but not sure). Should I put those same SOA
records into the other server before I cut over, or should I let it
start populating on it's own?
authoritative.
I'm also thinking that speed to the Internet will seem slow at firstYes, sounds correct. Of course that will depend of your network size,
but will speed up as the cache is filled from user queries to different
websites on the Internet. Does that seem like a plausable theory?
generally in middle size companies you shouldn't notice slow down for much
time.
Help will be much appreciated.You're welcome
--
===================================
I hope that the information above helps you.
Have a Nice day.
Jorge Silva
MCSE, MVP Directory Services
===================================
.
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- Changing DNS forwarder server
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