Hi all,
I have introduced three new 2008 r2 domain controllers which currently live with three 2003 sp2 domain controllers. All DNS servers.
It has been like this for about 3 weeks. During this time I have made changes to our DHCP so that our clients use the new 2008 DNS servers.
I am almost ready to demote the 2003 dc's but what concerns me is the static machines out there which MIGHT be using the old 2003 dns servers that no one knows about.
No-one I work with can be 100% sure of what machines out in the domain are static. Is there anyway to see from the 2003 dns servers which machines may be sending DNS requests to them?
I have used wireshark on them so far and couldn't see alot of dns packets, just the odd few here and there.
Also, does this sound like the correct procedure for the demotion.
1. disable the network connection on all the 2003 DC's for 24hours to make sure that everything is working correctly.
2. DCPromo each dc and remove the domain controller role, restart and rejoin to the domain
3. From the server manager, remove the dns role.
Is this the best route to take?
Thanks
Mac