Moving Servers To A New IP over night. DNS prob

[zerofocus]

Hi, We just got bandwidth from a new ISP and want to switch all our server over to use it. We run our own dns server, when we move all the servers over and go to a website it still goes to the old address. Assuming the ISP'S dns servers havn't propogated and it wants to send clients to the old isp, is this best way to migrate:

change the primary dns server to the new ip even though the box wont be setup until later(1 week).

Primary: New isp *(give it a week for it to propogate)*
Secondary: old isp - sends them to web box on old isp.

Then in a week switch them over the web and dns server and change the secondary to point to the new isp seondary dns server.

thanks
matt

 

[GlenJohnson]

Keep all clients pointing to the local dns server, and have the local dns pointing to itself and the new isp. When the local clients try and get an address, it will go to the local server first, and if the address is in cache, the client will get the resolution faster. If the local dns server does NOT have the address in cache, it will go to the new dns server, get resolution, then the address WILL be in cache for the next client. So, bottom line, local dns server points to itself first, the new dns server second, and ALL clients ALWAYS point to the local dns server. Speeds up resolution greatly. Good luck.

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Glen A. Johnson
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