asked on

Remove DHCP oddness

Hello ... i'm going to be taking out my main DC at some point - so I'm slowly taking out it's services.

I've got an issue with DHCP ...

I have 2 DHCP servers ... let's call the MASTER and SLAVE .... MASTER gave out scope IP's 10>150 and SLAVE gave out 151 > 254 ... this setup has been happily running for many months.

Today, I tried to remove MASTER and make the SLAVE give out 10 > 254.

An odd thing happened, after removing the MASTER DHCP (Add/Remove), the SLAVE was no longer Authorised and could not be until I reinstalled the MASTER DHCP

What am I doing wrong ? Should this of worked ?

S.S.

(there is a slight chance this was/is a DNS issue, but I wanted to check that I wasn't doing anything wrong with the above first)

Pete Long

Not sure you have done anything wrong though I would have done the following

Master DHCP scope 10>254 (reserve 151 >254)
Slave DHCP scope 10>254 (reserve 10 > 150)

then you just need to remove the reservation to swap them over :)

SpencerSteel

ASKER

oh, nice tip ... probably totally irrevalant to the issue, but nice tip :)

ASKER CERTIFIED SOLUTION

David Lee

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

katacombz

when you remove master did you "De authorize" it?

go to DHCP right click on the server and de authorize.

then on slave
either create a second scope to cover 151>254 and authorize
or
deauthorize the scope with 10>150
create a new scope with 10>254 on slave and authorize it.