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

[Jason Frisvold]

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On Aug 16, 2010, at 2:40 PM, Vineesh Viswanath Iyer wrote:
> 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 .. 

How so?  The IP assigned to the end-user is based on the source IP that the DHCP request comes in on.   That address is set via helper-address.

> regx
> 
> 
> On Mon, Aug 16, 2010 at 7:36 PM, Martin McCormick <martin at dc.cis.okstate.edu> 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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> 
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- ---------------------------
Jason Frisvold
Network Engineer
frisvolj at lafayette.edu
- ---------------------------
"What I cannot create, I do not understand"
  - Richard Feynman

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