DHCP Nack error...

[rfnit]

Help!! I have just redid my network address scheme from 192.168.1.x to 10.x.x.x (we ran out of address). Half of my machines (about 75 - 100 of them) are getting the error: The IP address lease 0.0.0.0 for the network card with network address (mac address) has been denied by DHCP 0.0.0.0 (the DHCP server sent a DHCPNACK message). I tried to do a release / renew via ipconfig and It tells me: Access Is Denied (to the DHCP server). We are running a win2k dhcp server with NO active directory (yet). We still have our old scope on the dhcp server, but it is disabled.

Thanks for you help!!
Jason

 

[ricpinto]

We have to start somewhere like: any errors, DCHP scopes and subnets, result of ipconfig/all perhaps. You can post those ip's as they are private but you can change the host names if you want to.

 

[GlenJohnson]

What are you using for a subnet? DHCP is one of the most simple things to run, so something simple is being overlooked. Half of my machines (about 75 - 100 of them) are getting the error: The machines that are getting in, what ip address are they getting. Compare ipconfig /all on a machine that connects with one that can't. Good luck.

Glen A. Johnson
If you're from Northern Illinois/Southern Wisconsin check out Tek-Tips in Chicago, Illinois Forum.

TTinChicago

 

[rfnit]

As far as the subnet goes. I am using 255.0.0.0 as the subnet. As far as errors go: Only what I listed above.
Access Is Denied (to the DHCP server). The event log says: The IP address lease 0.0.0.0 for the network card with network address (mac address) has been denied by DHCP 0.0.0.0 (the DHCP server sent a DHCPNACK message).

This is all the info that I have.

Jason

 

[ricpinto]

Based on the info you gave, I can't check whether there's a conflict/ovelapping ip's on your scope, exclusion, reservation etc.

OK i have to guess, maybe this link is related to you

http://support.microsoft.com/?kbid=284145

 

[GlenJohnson]

75 to 100 reservations would imply one BIG network. What did the ipconfig /all comparison show? Good luck.

Glen A. Johnson
If you're from Northern Illinois/Southern Wisconsin check out Tek-Tips in Chicago, Illinois Forum.

TTinChicago

 

[rfnit]

I fix the problem. I had a rouge route in my sonicwall. DUH!!!