?
Solved

Cleaning Up Phantom DHCP Leases....

Posted on 2003-02-25
7
Medium Priority
?
326 Views
Last Modified: 2013-12-23


NT Server 4.0, SP5, no option to upgrade to SP6;

I inherited a DHCP server that was originally set up for infinite lease expiration; The DHCP pool began to dry up, events recorded in event manager; I ran Jetpack.exe, to no avail ( waited 4 hours as recommended ).

I was able to obtain a DHCP Manager dump from DHCPCMD.exe -- I thought I could delete the phantom leases via a batch job.  In Win2K server, you can use the "delete lease [IP]" command -- no such options on NT server.......or are there???

0
Comment
Question by:Luke223
[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
  • 2
  • 2
7 Comments
 
LVL 79

Expert Comment

by:lrmoore
ID: 8020926
One way to clean it up for sure is to stop the server service, open \WINNT\system32\dhcp and delete all the files and folders there, restart the service and setup the new scope again. Once everyone reboots, you should be starting off with a clean slate.
0
 

Author Comment

by:Luke223
ID: 8022371
Hmmmm.....good point, lrmoore.  If I delete all files, including the dhcp.mdb, will they be re-created once I re-create the scope and start the service back up?  I must admit it sounds a bit risky on a large LAN, however.....
0
 
LVL 79

Accepted Solution

by:
lrmoore earned 400 total points
ID: 8022399
If you have a large lan, perhaps you have another server that is underutilized that you could enable DHCP on. Stop it on the existing one, turn on the new one with the same scope just to handle things in case. Clear the old one, setup the scope, turn off the temp, start the old one. If your leases are longer than the 3day default, nobody should even know.
0
 

Author Comment

by:Luke223
ID: 8076058
I cleaned up enough entries in our pool to allow us to run until another server is set up -- I will personally ensure this server gets set up properly, in order to avoid problems in the future.  Thanks for your help, guys !!!
0
 

Expert Comment

by:CleanupPing
ID: 9158495
Luke223:
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1 
EXPERTS:
Post your closing recommendations!  No comment means you don't care.
0

Featured Post

Create the perfect environment for any meeting

You might have a modern environment with all sorts of high-tech equipment, but what makes it worthwhile is how you seamlessly bring together the presentation with audio, video and lighting. The ATEN Control System provides integrated control and system automation.

Question has a verified solution.

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

A brief overview to explain gateways, default gateways and static routes OR NO - you CANNOT have two default gateways on the same server, PC or other Windows-based network device. In simple terms a gateway is formed when a computer such as a serv…
Are you one of those front-line IT Service Desk staff fielding calls, replying to emails, all-the-while working to resolve end-user technological nightmares? I am! That's why I have put together this brief overview of tools and techniques I use in o…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
Visualize your data even better in Access queries. Given a date and a value, this lesson shows how to compare that value with the previous value, calculate the difference, and display a circle if the value is the same, an up triangle if it increased…

801 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