[windows2000] SV: DHCP servers in a Windows 2000 AD network
- From: "Svein Arild Haugum" <svein@xxxxxxxxxxxxxx>
- To: <windows2000@xxxxxxxxxxxxx>
- Date: Tue, 10 Feb 2004 19:28:44 +0100
You can only have one DHCP server "pr adress".
You can not have
Server 1: 192.168.0.1-255
Server 2: 192.168.0.1-255
But you can have:
Server 1: 192.168.0.1-130
Server 2: 192.168.0.131-255
(This would not work if you use most of your subnets adresses. But if you have
a high lease time, you have good time before clients starts renewing while one
server is down.)
A DHCP client renews his lease after 50% of the total lease time. If the server
that gave him the adress is not avaliable, it tries again, until something like
80% (Not sure about the exact number) before it tries a broadcast, and gets an
adress from the second (or third) server.
This way one server would host adresses if the other goes down.
DHCP is a "Cluster enabled feature". But this requires 2 * Windows 2000
Advanced Server, and some quite expensive hardware. I would not think you
should buy a cluster just for DHCP, but you might use the cluster for this if
you have it for other features, like file sharing or Exchange.
http://support.microsoft.com/default.aspx?scid=kb;EN-US;226796
Mvh
Svein Arild
-----Opprinnelig melding-----
Fra: Rod Falanga [mailto:rfalanga@xxxxxxx]
Sendt: 10. februar 2004 17:59
Til: nmcs@xxxxxxxxxxxxxxx
Kopi: windows2000@xxxxxxxxxxxxx
Emne: [windows2000] DHCP servers in a Windows 2000 AD network
I administer a Windows 2000 Active Directory network. However, I don't have a
lot of training at this sort of thing, but I do have some.
Anyway, I've got a question about DHCP servers in a Windows 2000 AD network.
What I would like to know is, if there is 2 or more servers that act as DHCP
servers, do they replicate information between the 2 of them? Or put
differently, if I want to make one of my servers which isn't a DHCP server,
into a DHCP server, do I have to do some sort of "copying" of information from
the previous DHCP server to the new DHCP server?
Rod
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