Cannot install DHCP

[grabrail]

I am trying to install DHCP into a domain that has a DHCP server already configured. This will have a copy of the DHCP database and essentially be disabled until such a time when the existing DHCP server is unavailable.

When I try to install DHCP I get a prompt to accept a digital certificate then an erro saying:

"An error occured which prevented the Dynamic Host Configuration Protocol (DHCP) component from being installed or removed. the error was 0x800B003"

Does anybody know why this may be happening?

Thanks in advance

 

[trusted]

Is there an error message associated with this issue in the Event viewer? If there is please post it here.

Also if you are wanting to create a fault tolerant DHCP setup you should not create a second DHCP server with the same scope (range) of IP addresses. Instead it is a best practice to create two DHCP servers giving the main server a scope with 80% of the range and the second server with 20% of the range. Whenever I setup network with 2 DHCP server I make sure that the main servers scope has more then enough addresses to handle the entire network.

If you are trying to authorize the second server and are getting that message. It could be that the overlapping scopes is the genesis of the message.

 

[grabrail]

Hi

There is nothing in the event logs that is relevant to this problem.

My problem is that the client does not want 80/20 set up, they are being awkward. They want the scope to be identical.

It is not as far as authorizing the datbase it is at the installing DHCP phase.

Regards

 

[karlisi]

You _must_ make different scopes. If you will make identical scopes, both of your DHCP servers will give duplicate IP addresses for clients, because they dont exchange the information about issued addresses.

Fault tolerant system should be built like 'trusted' wrote - 80/20 (or you can use 50/50 if you have only one subnet), where two DHCP servers are issuing addresses from different scopes of the same subnet.

===
Karlis
ECDL; MCSA

 

[grabrail]

I havnt got to the part where I am cretaing scopes yet, I am still trying to get it installed, and it wont let me due to the error above.

I have spoken to the client and they have agreed to use the correct method you describe for setting up the scopes. But first I need to get it installed.

Thanks

 

[grabrail]

I have found what the problem was:

It was due to the fact that the client had a group policy setting within a group policy object named 'sus server policy' that stopped unsigned drivers from being installed.

Once I amended the policy all was well.

Also had to educate the client on using useful naming conventions on their grou polices as well

Thanks for replies to my original post