Re: DHCP on a branch office server?

Tech-Archive recommends: Speed Up your PC by fixing your registry

I did that with a 50% split and the reservations copied between the
two.. It has come in handy more than once.. :)

---
Jeffrey Randow
jeffreycentex@xxxxxxxxx
Windows Networking MVP 2001-2006
http://www.networkblog.net

On Wed, 17 Oct 2007 13:58:13 -0700, "Dave Bishop [MSFT]"
<davbish@xxxxxxxxxxxxxxxxxxxx> wrote:

You must configure the two DHCP servers with separate scopes that do not
overlap. Ensure that neither server can give out an address applies to
the network serviced by the other.

That said, you can also provide yourself a little redundancy by taking
advantage of the fact that when a client receives offers from multiple
DHCP servers, it generally chooses the address from the offer that
arrived first - presumably the local box.

On DHCP server A, serving subnet A, create a scope A that has the 80% of
the addresses for that subnet. On DHCP server B, create a scope A that
has the other 20% of the addresses for subnet B. That way, if for some
reason DHCP server A goes down, B can service requests until A is back
up.

At the same time, configure DHCP server B with a scope for subnet B that
contains 80% of the addresses for subnet B. Then configure DHCP server
A with a scope for B that contains the other 20% of the addresses.

For example, split a typical class C (like 192.168.1.XXX) into:
Scope on server A for subnet 192.168.1.0/24:
192.168.1.1 - 192.168.1.200
Scope on server B for subnet 192.168.1.0/24:
192.168.1.201 - 192.168.1.254

I hope this helps!
.

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