dhcp server 2008
Posted on 2011-04-29
Here is the situation:
I have 2 2003 server DCs and I just added 2 2008 DC Servers in my domain (same site).
I exported and then imported the dhcp scope settings from the 2 2003 servers to 2 of the 2008 servers and everything is running fine - so it's like a mirror now so to speak. ALL dhcp servers are authorized.
After a few days of no reported problems, everything running fine, I decided today to unauthorize both of the 2003 dhcp servers. Soon after a few clients were having problems, no ip address. I saw active leases on all 4 dhcp servers. I performed an ipconfig /release and /renew. Restarted the clients, restared the dhcp services, restarted the servers and still they cant get an ip address from a certain subnet on the 2008 dhcp server.Nothing in my infrastructure has changed.
I have 7 scopes on each dhcp server. What can be the problem???
I read that I may need to enable the 2008 relay boot agent? But it says it cannot be done on the server that is hosting dhcp. So where does this need to be enabled? Also, this is on a lan that has vlans on switches but there is no router dividing the clients from the dhcp servers and I did see many active leases on the 2008 server so it leads me to belive this 2008 relay boot agent is not the issue.
Also, yes there is a scope of the ip range that is the same as the ip address of the dhcp server.