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

Jason Frisvold frisvolj at
Mon Aug 16 17:57:51 UTC 2010

Hash: SHA1

On Aug 16, 2010, at 1:10 PM, Martin McCormick wrote:
> 	Is there any way to configure a subnet such that users
> who already have leases can renew them but nobody new can
> register? We want to expand the size of a network and the only
> way we can do this in this case is to setup a whole new network
> and let the users gradually leave the old one by attrition.

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.

> Thanks.
> Martin McCormick WB5AGZ  Stillwater, OK 
> Systems Engineer
> OSU Information Technology Department Telecommunications Services Group
> _______________________________________________
> dhcp-users mailing list
> dhcp-users at

- ---------------------------
Jason Frisvold
Network Engineer
frisvolj at
- ---------------------------
"What I cannot create, I do not understand"
  - Richard Feynman

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