Unauthorize DHCP

[Haggis]

i have a weird problem. (win2K3 servers) I am moving dhcp fom server A to
server B. i have successfully exported and imported DHCP data fom one to the
other. I have authorised Server B and tried to unauthorise Server A. When i
do this i get a 'Parameter in incorrect' error. A the moment i have both
Serve A and Serve B as Authorised DHCP servers. One thing i notice though,
when i go to the menu to 'add server' in the DHCP console from the list of
DHCP servers, I see the name of the new server and the name of the old-old
dhcp server prior to the current one, they have the same IP address.

Maybe something weird hapened when i transferred DHCP from the older server
to Server A some time ago. it seems that in AD that there is match up of
older server name to current ip address.

My question is, how do i get the Server A removed as an Authorised DHCP
server when there seems to be some name confilct. Can i do this manually
through adsiEdit or something. Alsois there any issue having 2 Authorised
DHCP server on the same LAN.

Thanks in advance

 

[Haggis]

I managed to sort it out i used the netsh command to manually remove
(unauthorize) the old server. Now clients are contacting the new DHCP server.


"Haggis" wrote:

> i have a weird problem. (win2K3 servers) I am moving dhcp fom server A to
> server B. i have successfully exported and imported DHCP data fom one to the
> other. I have authorised Server B and tried to unauthorise Server A. When i
> do this i get a 'Parameter in incorrect' error. A the moment i have both
> Serve A and Serve B as Authorised DHCP servers. One thing i notice though,
> when i go to the menu to 'add server' in the DHCP console from the list of
> DHCP servers, I see the name of the new server and the name of the old-old
> dhcp server prior to the current one, they have the same IP address.
>
> Maybe something weird hapened when i transferred DHCP from the older server
> to Server A some time ago. it seems that in AD that there is match up of
> older server name to current ip address.
>
> My question is, how do i get the Server A removed as an Authorised DHCP
> server when there seems to be some name confilct. Can i do this manually
> through adsiEdit or something. Alsois there any issue having 2 Authorised
> DHCP server on the same LAN.
>
> Thanks in advance

 

[johnny_mango]

I had the same problem which appeared to be caused by a change to the
server´s FQDN since being authorized.

"Haggis" wrote:

>
> I managed to sort it out i used the netsh command to manually remove
> (unauthorize) the old server. Now clients are contacting the new DHCP server.
>
>
> "Haggis" wrote:
>
> > i have a weird problem. (win2K3 servers) I am moving dhcp fom server A to
> > server B. i have successfully exported and imported DHCP data fom one to the
> > other. I have authorised Server B and tried to unauthorise Server A. When i
> > do this i get a 'Parameter in incorrect' error. A the moment i have both
> > Serve A and Serve B as Authorised DHCP servers. One thing i notice though,
> > when i go to the menu to 'add server' in the DHCP console from the list of
> > DHCP servers, I see the name of the new server and the name of the old-old
> > dhcp server prior to the current one, they have the same IP address.
> >
> > Maybe something weird hapened when i transferred DHCP from the older server
> > to Server A some time ago. it seems that in AD that there is match up of
> > older server name to current ip address.
> >
> > My question is, how do i get the Server A removed as an Authorised DHCP
> > server when there seems to be some name confilct. Can i do this manually
> > through adsiEdit or something. Alsois there any issue having 2 Authorised
> > DHCP server on the same LAN.
> >
> > Thanks in advance