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DHCP and scavenging question

Posted on 2014-02-28
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Last Modified: 2014-03-10
Should I set my DHCP lease to match with my DNS scavenging time? Im getting ip conflicts after deleting some leases and I think this might be why?
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Question by:Thomas N
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by:Shaik M. Sajid
ID: 39895160
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Mahesh earned 500 total points
ID: 39895838
When you delete lease manually from DHCP server, I hope you are ensuring 1st that original client is offline at that time, other wise Ip conflict is expected.
Now when you delete the lease manually, the new client probably will get that lease and if old client now power on before his lease expires, i guess that he is trying to request same IP and since now its assigned to different machine, dns client service on client machine is throwing message about IP conflicts

Have you set conflict detection attempt setting on DHCP server ?

I don't think \ aware ip conflict issue is because of scavenging not set

I think this is continuation of your last question ?

If you could please provide more information how your DHCP is configured , it will really help to resolve your issue

Does your DHCP is installed on domain controller ? in that case have you set credentials for DHCP ?
How many network cards do you have installed on DHCP server ?
Do you have multiple single-single scopes pointing to multiple VLANs ?
Does user in out from one VLAN to different is frequent ?
What is the current DHCP lease duration ?
Is your DNS zone is set for secure dynamic update ?
Are you running out of IP addresses on DHCP front ?
Does your DHCP resides on virtual server ?
How DHCP advanced DHCP options are set ? screen shot is helpful please..

Mahesh
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