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what do i need to consider before i change servers IP addresses?

Posted on 2008-06-19
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I have a single domain system with 2 DCs, an Exchange 2000 (member server), and file server. all of them are on separate servers and running Windows 2000 Server STD.

I have a need to move a DC, Exchange 2000, and file server to a separate sub-net, which is forcing me to change IP addresses on all these computers.

may i just:
1. change IP addresses and DNS servers on both member servers in Safe Mode
2. turn them off,
3. change the IP on the DC.
4. turn on the 2 member server (Exchange and file server)
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Question by:PaperTiger
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by:tigermatt
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That's essentially the procedure. All the DNS records are automatically updated when the servers come back online, so you can just change the IPs and move the servers as appropriate. Don't forget to change the DNS server IP(s) though to a DNS server on the new subnet.

The only other pitfall to look out for is to ensure your port 25 (SMTP) exception in the firewall is pointing towards the new IP/subnet of the Exchange Server, otherwise mail will be unable to flow in as the Exchange Server won't be present at the old IP.

-tigermatt
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by:PaperTiger
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I understand the Exchange is very picky on stuff like that. has anybody ever tried?

how about i through in a Blackberry Enterprise Server running on Windows 2003?
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tigermatt earned 500 total points
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The actual procedure is just to change the IP address in Exchange, ensure you already have a contactable DNS server on the new network (which is programmed into Exchange) and then restart Exchange. It's just ensuring the firewall is correctly updated for the new IP address which is the most critical part of the operation.

Don't get the internal IP and external IP confused with external DNS. Since you're changing internal IPs, no external DNS needs to be modified.

As for BES, you can just change the IP and ensure again a DNS server is contactable on the new subnet.

-tigermatt
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