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DHCP not working on new Windows 2008 R2
Posted on 2012-12-23
Hi.
I'm migrating from SBS 2008 to Win 2008 R2 Ent. When I deactivate DHCP on the SBS and active it on the New server The clients are not being assigned IP addresses. I have check the firewall on the new server and I've tried releasing the ip on the clients. I even change the time on the SBS to force the IP to expire in 15 min. Any help would be much appreciated.
I'm migrating from SBS 2008 to Win 2008 R2 Ent. When I deactivate DHCP on the SBS and active it on the New server The clients are not being assigned IP addresses. I have check the firewall on the new server and I've tried releasing the ip on the clients. I even change the time on the SBS to force the IP to expire in 15 min. Any help would be much appreciated.
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Did you "authorize" the new DHCP server? Step 4:
http://technet.microsoft.com/en-us/library/dd379483(v=ws.10).aspx
http://technet.microsoft.com/en-us/library/dd379483(v=ws.10).aspx
First Authorize the DHCP server. Then reconsile the DHCP server and check for error, if any.....u can ran Best Practice Analyzer to check the issue also.
:)
:)
I did authorize it via the gui. I have the following in the logs.
This computer has at least one dynamically assigned IPv6 address.For reliable DHCPv6 server operation, you should use only static IPv6 addresses.
The DHCP service has detected that it is running on a DC and has no credentials configured for use with Dynamic DNS registrations initiated by the DHCP service. This is not a recommended security configuration. Credentials for Dynamic DNS registrations may be configured using the command line "netsh dhcp server set dnscredentials" or via the DHCP Administrative tool.
This computer has at least one dynamically assigned IPv6 address.For reliable DHCPv6 server operation, you should use only static IPv6 addresses.
The DHCP service has detected that it is running on a DC and has no credentials configured for use with Dynamic DNS registrations initiated by the DHCP service. This is not a recommended security configuration. Credentials for Dynamic DNS registrations may be configured using the command line "netsh dhcp server set dnscredentials" or via the DHCP Administrative tool.
This behavior occurs because you did not configure the DNSCredentials on the domain controller on which you installed the DHCP Server service, and DNS services.
Kindly refer below link and do the needful.
http://support.microsoft.com/kb/282001
Kindly refer below link and do the needful.
http://support.microsoft.com/kb/282001
I did. still the same issue. i'm thinking this is because SBS is still on the network. I will finish the migration today after work. When I stop the service and reactive it on the SBS server it comes back up with no problem.
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