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Guys, I’m sorry for the brain fart question. But here it goes…

I need to move a dhcp scope (/24) with currently 25 addresses assigned and 1 reservation to another DHCP server. I don’t want to do a Powershell export as there are so few addresses being dished out right now.

I setup the scope already with reservation configured. I lowered my lease time to 30 minutes. Questions is, do I delete all leases and then deactivate scope on old DHCP and activate scope on new DHCP, or just deactivate old DHCP and activate new DHCP?

I appreciate any info and a few laughs at my expense.

5 Spice ups
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This is what I would do. If anything goes wrong you can turn the old server back on but you should be fine.

2 Spice ups
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If everything is the same then deactivate the old dhcp and activate the new one.

If you have ip helper addresses on any routers then update those too.

1 Spice up
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You might see duplicate ip issues for 15 to 30 minutes.

1 Spice up
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Deactivate the old DHCP server and activate the new DHCP server. There is no need to clear the leases as they wont have an effect since the old DHCP is inactive.

1 Spice up
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If they’re on the same subnet just deactivate the old scope and activate/authorize the new server and scope. On the new server ensure you also enable the check (I do three to five checks) feature to ensure that previously allocated addresses are flagged as “BAD ADDRESS”. Go in when the old scope times out and clear the BAD ADDRESS entries from the new server.

3 Spice ups
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Awesome, I appreciate the info. Thanks guys!