We have on one site four DCs. 2x 2003 and 2x2008. The 2003 is running on very old and slow hardware but is the primary dfs-root and cant be shut down without migrating the dfs-root and without downtime.
So we would like to change the priority of the logonserver, so that every Clients/Server uses only the fast 2008 DCs.
We have changed the registry settings on the two 2003 DCs, as described here:
This took affect in DNS on the _ldap entrys in the following path:
The TTL of the settings is 10 Minutes.
Everythin seems good. But when logging on in most cases the old DCs are used as Logonserver. Checking with cmd set logonserver
checking with nslookup
> set type=srv
The priority is ok (old DCs 16, new DCs 0)
but the sort of the server changes randomly every check. I would expect, that the new DC are because of the priority allways in the upper lines and the old DCs in the lower lines.
But it isnt.
Can someone help? Thanks.