DHCP Reservations

[TecGuy]

Hello All,

I have two DHCP server and what I have done is split the subnet scope
between the two servers. One has the first half of the range in a scope and
the other has the second half of the range in a scope. This is in an effort
to create some redundency in the event of a server downtime. My question is
regarding DHCP reservations. I know that you can create reservations outside
of the scope of address that you have configured as long as they remain
within the subnet, but do the reservations have to exist on both servers. I
am guessing yes, or the workstations that has the reservation would be able
to verify its address if the on server hosting the reservation went down and
the user would not be able to logon.

Can someone confirm this and if possible does anyone know of a microsoft doc
that verifies this.

Regards,

Roger

 

[Gerry Voras]

Huh? I guess the biggest thing is that if you are going to do this (and I
wouldn't recommend it) is that (1) both DHCP servers must be registered with
the Active Directory, (2) both must be on the same broadcast segment, and
(3) you understand that a DHCP server can't least out reservations outside
of its defined scope.

Redundancy of leasing mechanisms shouldn't be a problem as long as you can
repair your DHCP server before 50% of the lease period goes by.