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Errors  Migrating DHCP from SBS 2008 to Server 2012 r2

Posted on 2016-11-28
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Last Modified: 2016-11-29
netsh dhcp server export C:\Users<username>\Desktop\dhcp.txt all,   on SBS 2008  server
copied file over to new desktop


Ran the wizard on 2012 installed DHCP Role then ran

netsh dhcp server import C:\username>\Desktop\dhcp.txt all  on 2012 server

completed wizard where it created dhcp admin and dhcp users security groups
then authorized ..
I have the following errors in event log on new server .

M      1056      Warning      Microsoft-Windows-DHCP-Server      System      11/2/2016 8:21:47 PM

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.


M-DC1      1046      Error      Microsoft-Windows-DHCP-Server      System      11/2/2016 8:21:51 PM
The DHCP/BINL service on the local machine, belonging to the Windows Administrative domain m.local, has determined that it is not authorized to start.  It has stopped servicing clients.  The following are some possible reasons for this:
      This machine is part of a directory service enterprise and is not authorized in the same domain.  (See help on the DHCP Service Management Tool for additional information).

      This machine cannot reach its directory service enterprise and it has encountered another DHCP service on the network belonging to a directory service enterprise on which the local machine is not authorized.

      Some unexpected network error occurred.


M-DC1      10020      Warning      Microsoft-Windows-DHCP-Server      System      11/2/2016 8:21:51 PM

This computer has at least one dynamically assigned IPv6 address.For reliable DHCPv6 server operation, you should use only static IPv6 addresses.


I do not know how to create an ipv6 address to assign

Note

Both both the SBS2008 and the server 2012  have the option to deauthorize when DHCP console is brought up
I do not want to deathorize sbs until I am sure that 2012 is ready to function as DHCP server without any errors or warnings
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Question by:Andre P
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Accepted Solution

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Cliff Galiher earned 500 total points
ID: 41905051
All three issues actually provide good information. Also, it is important that you know the difference between an error and a warning.

For your first error, unless you have a reason to do so, simply disable dynamic updates on the server. Windows clients, and most modern DHCP clients, can do dynamic DHCP without the server.

For the second one, the error was quite specific. One of the causes it lists is it sees another DHCP server (SBS 2008) so it shut down. You don't need to deauthorize SBS 2008. Just temporarily disabled the DHCP server.

For the third, dynamic IPv6 is perfectly normal. Don't need to mess with it.
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Author Comment

by:Andre P
ID: 41905072
or your first error, unless you have a reason to do so, simply disable dynamic updates on the server. Windows clients, and most modern DHCP clients, can do dynamic DHCP without the server.

How do I disable dynamic updates on the server .
I have not yet migrated DNS from SBS2008 to 2012 .   ( I am doing this slowly and deliberately as this is SBS is in production )
I looked in DHCP manager and could not find any place to do this .
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