?
Solved

How to make DHCP work after a IP Scheme Change

Posted on 2009-04-02
1
Medium Priority
?
452 Views
Last Modified: 2012-05-06
We have multiple locations and we are migrating our internal IP network from 172 dot to 10 dot address scheme.  I've added a secondary address on each of our routes for the 10 dot scheme and everything seems to work.  DHCP servers are located at our central office and IP Helper is set and working on all Routers.  I've created the 10 dot scopes and leases on the 172 dot scopes are currently set to a short lease (1 hour).  I've changed static devices at our remote location to the 10 dot network scheme and they work correctly.  

At the end of business (Friday) I instructed the remote location to shutdown all PC's and I inactivated their current scope and activated their new scope.  When the users attempted to boot on Monday they could not get an address.  I tried ipconfig /flusdns and /registerdns and still no luck.  I had to reactivate their old scope.  I've been told that I may have to change the primary address on the remote router from 172 dot to 10 dot to allow the new DHCP scope to work.  I like some feedback on whether this is the problem.
0
Comment
Question by:lwrogers
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 8

Accepted Solution

by:
Sniper98G earned 2000 total points
ID: 24051366
Yes; if you want to allot address from the 10 scope your router interface will need to be in the 10 network. Most of DHCP takes place in the router not the server if the router does not know what scope it should map to it will not be able to correctly ask the server for addresses.
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Ever wondered why you had to use DHCP options (dhcp opt 60, 66 or 67) in order to use PXE? Well, you don't!
Learn how to PXE Boot both BIOS & UEFI machines with DHCP Policies and Custom Vendor Classes
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …
Suggested Courses
Course of the Month14 days, 7 hours left to enroll

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question