How to migrate DHCP configuration from two DHCP servers configured for failover hot-standby?

Question

How to migrate DHCP configuration from two DHCP servers configured for failover hot-standby?

Are there any good articles, documentation, videos on how to migrate DHCP configuration?

Existing environment:

1) Two DHCP servers running Window Server 2016 Standard where each scope is configured with DHCP failover in stand-by mode.

2) Need to standup a third (new) DHCP server with the same scope configurations as the two current DHCP servers.

3) Need to decommission one of the original two DHCP servers that is already a member of the failover.

What is Microsoft best practices to accomplish this?

Do we need to break the failover relationship prior to starting this project?

Thank you

Answer 1

Hello @Andrew Marshe ,

There is no specific "best practice" as it is very straight forward:
1- Set up an add the new member to the DHCP Failover pool
2- Disconnect the Failover member to be decommissioned. Test assignment, routing, and leave at least a 2 week period for eventual issue detection.
3- After the time that is confirmed to work successful, you can proceed to remove the relationship and decommission the server.

Complete guide of DHCP Failover: https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/hh831385(v=ws.11)
Guide for Failover relationship removal: https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/dn338986(v=ws.11)

Hope this helps with your question,

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