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Windows 2008 R2 DHCP server
Posted on 2013-01-02
I installed the DHCP role on one of the AD servers, and authorized, and active and yet the clients are not picking up a DHCP server.. Any suggestions? The old DHCP server died so i have litterally two days for this to work.. based on the lease expiration
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16 Comments
Active 2 days ago
Did you follow the instructions as indicated here :
http://www.howtogeek.com/99723/how-to-set-up-dhcp-in-server-2008-r2/
http://www.howtogeek.com/99723/how-to-set-up-dhcp-in-server-2008-r2/
Are the ports open on firewall into your 2008 server?
Then from any client run:
ipconfig /release
then
ipconfig /renew
Then from any client run:
ipconfig /release
then
ipconfig /renew
You can install WireShark on one of the computers an watch the traffic to understand what is happening.
Also check the event viewer for Event ID 1051:http://support.microsoft.com/kb/306925
Active 2 days ago
You should setup a network trace on the server and on one of the clients and look at the DHCP communication between the client and the server
try using netcap /n:1 /b:150 /c:c:\DHCPtrace.cap
You can then look at the trace and filter for DHCP packets to see what is happening.
try using netcap /n:1 /b:150 /c:c:\DHCPtrace.cap
You can then look at the trace and filter for DHCP packets to see what is happening.
Since your DHCP Serevr IP changed, you should update the IP from your router/core switch. Have you done that?
Active today
Do you have managed switches in your environment?
You might have a dhcp helper setting configured on the switches.
Can you confirm this ?
You might have a dhcp helper setting configured on the switches.
Can you confirm this ?
did you chance to get the renew the new DHCP server IP in DNS setting ?
most of the chance it still using old DHCP range.
most of the chance it still using old DHCP range.
Active 4 days ago
Check your switches, see if you have an ip-helper addressed configured. If you do, update the address to the new dhcp server.
Active today
@iruiz52
I guess you do not read through the thread prior to posting? Look up three post from this one and you will see that someone has already offered that suggestion.
-Mike B-
I guess you do not read through the thread prior to posting? Look up three post from this one and you will see that someone has already offered that suggestion.
-Mike B-
Well.. here is the solution.. the Filter in the DHCP server was enabled, once it was disabled, then the IP's were being distributed. That simple.. believe it or not. I can't believe it.
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