Unathorize old DHCP server

[kennysarmy]

Just checked our DHCP.

In "Manage Authorized Servers":

I have four entries:

One server is in twice, with it's correct IP (10.7 range) and again with a very old IP (10.10 range).

Is it safe to remove the old entry?

[ChrisH]

Even if it does take both entries out you can authorise it again in seconds.

[Michael]

It should be safe, however you can also disable the DHCP Server service manually.

[kennysarmy]

Hmmmm I clicked Unathorize and after a while of egg-timerness I get control again and it's not removed it.

I have:

fp2.domain 10.7.43.152
fp2.domain 10.10.3.2
fp2.domain 10.7.43.153
fp6.domain 10.7.43.156

Might I have to remove both fp2 entries?
Is there a risk if I do that of breaking anything?

Thanks.

[Michael]

Probably best if you make the change when the network's quiet.

I did have it happen once that no matter what I tried the entry wouldn't/couldn't be deleted, so disabling DHCP Server did the trick. Similar to your situation, it was an old server no longer used, however it was the same IP range, not a totally different range.

[kennysarmy]

OK - might wait till half-term - does nt seem to be causing problems but just tidying things up before we migrate our AD to 2008 servers.