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DHCP Changing lease time affecting current leases

Posted on 2014-11-03
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Last Modified: 2014-11-19
When changing lease time in a dhcp server, does that affect current leases or just new leases? Is there any documentation on this?
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Question by:billtouch
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Rizzle earned 250 total points
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I believe the new lease time for DHCP Leases only comes into effect when the current old lease expires. For example you had 7 days set previously and the new one is 3 days, once the clients with a DHCP Address lease for 7 days is up then the 3 day lease time will take effect after their 7 days lease is up.


Hopefully the below will help:
http://technet.microsoft.com/en-us/library/cc780476(v=ws.10).aspx

http://www.tcpipguide.com/free/t_DHCPLeaseLifeCycleOverviewAllocationReallocationRe.htm
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by:dlb6597
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it will only affect new leases and renewals...but a dhcp client will start asking for a renewal when it reaches the halfway point of the lease...for example if you have an 8 day lease, clients will attempt to renew at 4 days...and they will get the new lease time...
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by:billtouch
ID: 40453638
I am sorry I left this open for so long. A busy schedule and a short memory contributed. I want to thank both of you greatly for your comments!!!

Bill
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