Is there any way to Migrate Users from One Network to Another?

Vineesh Viswanath Iyer vinunath at
Mon Aug 16 18:40:37 UTC 2010

that would not work with ip helper-address , if you have same scope and you
are migrating the dhcp server , then , this method will work . But here you
are trying to change the subnet , just by a different helper , you would
never be able to achieve your goal ..


On Mon, Aug 16, 2010 at 7:36 PM, Martin McCormick <martin at
> wrote:

> Jason Frisvold writes:
> > Is that subnet behind a router that's forwarding the dhcp request?  ie,
> > ip helper-address on a cisco?  If so, I believe the source of the request
> > is the primary IP on the interface, so you can create the new subnet,
> > make it the primary IP on that interface, secondary the old one, and
> > users will transition over time.
> It is behind a Cisco router. Thanks! I will relay this to the
> rest of our group.
> Martin McCormick
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