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DHCP Reservations versus extended Lease lengths

Posted on 2014-04-23
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Last Modified: 2015-02-04
I would like some input on a scenario I'm considering. I would like to do one of two things in my DHCP environment and I'd like feedback on the pros and cons of each.

The first would be to extend the lease length of all domain-owned machines to a very lengthy number like 9 months.

The second option would be to add all domain-owned machines to a DHCP reservation.

We have a wireless environment that requires DHCP addresses. Would a reservation impact that?
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Question by:TechInTheWoods
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Beartlaoi earned 250 total points
ID: 40018836
Reservations wont impact the wireless, they simply guarantee that the specified MAC always get the specified IP.  If you are configuring routers or firewalls with these IP addresses then I would always use a reservation since a lease can still change, forcing you to figure out what broke and reconfigure something to fix it.
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by:Rob Williams
Rob Williams earned 250 total points
ID: 40019084
I would agree.  I can see no advantage of a 9 month lease unless you want them at some point to automatically be removed from the address lease table.  If you need to retain the IP for management or other reasons, reservations are the way to go.
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