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client alway have static IP when i setup DHCP server

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11 replies

by tranthechinh

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Hi All.

I config DHCP server have a scope is: 10.4.39.10 to 10.4.39.50
not exclude. But my PC alway obtains IP is: 10.4.39.4.

Can you help me?. When i plug new card on my PC. it obtains IP í : 10.4.39.3!!!!!!!!

11 replies

by deity_chooch

It sounds like your DHCP server is configured incorrectly, or the configuration has changed, but the DHCP service hasn't been restarted, and is therefore still sending IP addresses from a different pool.

by tranthechinh

Thanks. But i have configured DHCP not incorrect, because other computer obtained IP address from DHCP server. there is only one computer alway obtain ip is: 10.4.39.4.

Please help me!

by ben.rattigan

Is this computer a member of the domain? How many scopes are on your DHCP server? Have you checked if any other DHCP servers are running?

by ic-it

but have you done a ipconfig /flushdns, release and renew on that machine? Its current lease may be hung up.

by michael kassner

If you try the command ipconfig /all what does it publish as the DHCP server IP addr? Is that the correct IP addr?

by sue t

try giving the computer a static IP address, reboot and then change it back to DHCP.

by tranthechinh

i have try it. but it alway obtain is: 10.4.39.4. I don't understand. ^-^

by tranthechinh

This computer is a member of domain. There is only a scope. and have one DHCP server. My Server is DC, DNS, Gateway. there are two NICs. one connected with Modem (External NIC), other connected with Switch (internal NIC).

Thanks very much.

by tranthechinh

I have done ipconfig/release and ipconfig/renew, try disable and enable back, uninstall driver NIC and install back. But it not OK. it alway is: 10.4.39.4 (out of range of scope of DHCP server.
When i run ipconfig/all it show: IP:10.4.39.4
subnet mask: 255.255.255.0.Default gateway: 10.4.39.2 (internal IP of Server. DHCP server: 10.4.39.2 (of Server)...
This computer is still contected with Internet and well send/recieved mail.

I have try plug other NIC on this computer. and take it obtain IP by DHCP. it recieved IP is : 10.4.39.3 :D! I don't understand. Please help me? Thanks so much.

by churdoo

Is there a reservation in the DHCP server giving out the .4 and .3? If so, delete the reservations. If not, reconcile the DHCP database.

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