moving ISPs, for the nth time...

Re: moving ISPs, for the nth time...

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Hi Claude,

done this twice, took the second time to figure it out correctly.

Don't update the virtual domains you have, they will automatically be=
updated to the new primary server addresses by network solutions when you=
update the primary and secondary addresses of your dns servers with them.

Change the TTL of your primary and secondary dns server to around 5 minutes=
before they expire.

Run Both primary and secondary servers at the same time (the new ip address=
range and the old ip address range), both are running the exact same=
information and pointing toward the old network.=20

Request the primary and secondary dns servers with network solutions to have=
the new ip addresses of your new network. =20

When those are updated, then all you have to do is redo the primary dns info=
and redo the virtual domains to the new server ip's (I'd give it 48 hours=
though after the confirmation). But since they currently contain the old=
information, your old network is up and running just fine but everybody=
else is now getting your info from the new dns servers. So, five minutes=
after you update the new dns servers, everybody else should update too,=
provided the TTL's have expired from your original setting and Network=
Solutions has updated their records.

Change your network to the new IP's and reset the TTl's.

>Okay, I know this has been covered before, I just spent a couple
>of hours browsing the archives. ;) However... I didn't run across
>any posts that COMPLETELY answered my questions, so I thought I'd
>try posting.
>
>I'm currently in the process of switching ISPs. At the moment (and
>for the next two weeks or so), I have both subnets active. I've
>taken the opportunity to move over almost all addresses so far...
>but the two DNS servers are giving me headaches.
>
>I'm trying to figure out the best way to minimize downtime without
>inconveniencing clients too much. Part of the problem is that I
>don't have access to many of the registration records; I have to
>ask the clients to make changes with their registrars. So I want
>to minimize the effort involved there, too. :)
>
>There are currently 2 dns servers; a primary and a secondary. Is
>there any way to keep, say, the secondary up and running on the
>old address for a few days, while the primary shifts over to the
>new subnet? Is it that simple? (Move one, not the other?) Do I
>submit IP address changes for both servers simultaneously (or
>ask clients to do it), or do I need to do one, then the other a
>few days later?
>
>Ideally, except for having to visit their registrar, I want this
>to be as seamless as possible for the clients. Any help here would
>be much appreciated. :)
>--=20
>Claude
>errera@bungie.org

Jody McAlister
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