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Remove DHCP oddness

Posted on 2004-10-05
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Last Modified: 2010-04-13
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)
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Question by:SpencerSteel
4 Comments
 
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Expert Comment

by:Pete Long
ID: 12225671
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 :)
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Author Comment

by:SpencerSteel
ID: 12225700
oh, nice tip ... probably totally irrevalant to the issue, but nice tip :)
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Accepted Solution

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David Lee earned 500 total points
ID: 12226096
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LVL 7

Expert Comment

by:katacombz
ID: 12227085
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.



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