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DHCP Conflict

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by probsolve

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i`m getting IP conflicts error -but its same IP that shows up on different machine.to fix the error i did following,
ipconfig/release
ipconfig/renew
to remove it from client machine & then on server side,
i deleted the address from the dhcp database which got same ip address
also deleted mapping of same ip adress on wins
but even then it was not solving problem so i increase lease to 7 days (i`ve 50 comp iin network)
finally to get rid of error i excluded that adress from the DHCP scope.

but now a new ip address conflict came up -any permanat solution.

10 replies

by ejsotillo

The information you are giving is not enough, check on the reservation for IP addresses on your DHCP scope, maybe you have some that you are unawared of also have you tried to give static IP addresses?, since you have a scope it's always better givean static IP, (providing that you know how to plan you LAN). Check on SolarWinds.com they have a pretty nifty Subnet calculator for free..

by curlergirl

I'm a little confused about what's actually happening - do you have two clients that are getting the same IP address from the DHCP server? To clear this problem here's what you normally have to do on BOTH or, if more than one, ALL of your workstations that are getting duplicated addresses: at each workstation, run ipconfig /release and then shut down the workstation. Go to your DHCP server and release the conflicted IP address; you can also exclude it from your DHCP scope, at least temporarily, if you prefer. Go back to the workstations and, one by one, turn them on. Check the ipconfig on each workstation - they should get completely new IP addresses. Hope this helps! If not, respond with more details and I'll try again to help.

by bill cassada

Sounds like you may have a workstation out there with a static IP address which has not been reserved in your DHCP.

by probsolve

my static IP range is not included in scope --i first excluded my 30 static ip adddress and for rest of range i made`em dynamic by creating scope.In conflict ,same ip address appear on different workstation and those workstations don`t ve any staicaddress.

by conrad

It is written that he who governs well, leads the blind; But that he who teaches, gives them eyes.

- David O. McKay

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