Solved

DNS Shows Old IP Addresses

Posted on 2004-09-24
5
206 Views
Last Modified: 2010-03-18
Windows 2k server, DC with DNS installed.  Clients use DHCP.  When I look at DNS it shows anywhere from 1 (which I would expect) to 4 different computer names for 1 IP address (internal addresses, 10.1....).  Why is DNS not releasing these?  I just tested one.  I had a PC that hasn't been turned on in a while which was one of the multiple address PC's.  I booted it up and it grabbed a new address through DHCP.  I looked in DNS and it removed the old address and listed it under the new address (which it now shares with another old PC).

Thanks,

bshort1023
0
Comment
Question by:bshort1023
  • 3
  • 2
5 Comments
 
LVL 104

Expert Comment

by:Sembee
ID: 12150495
Have you configured DHCP to discard the records when the lease is deleted?
Look at that the properties of the DHCP server and then click on the second tab "DNS".

Simon.
0
 

Author Comment

by:bshort1023
ID: 12276412
On the DNS tab the box is checked for "Discard Forward Lookups when lease expires".  Is that what you were referring to?

Sorry so late with the reply I have been on vacation.

Thanks.
0
 

Author Comment

by:bshort1023
ID: 12276635
Also in DNS the forward and reverse lookup zones have many different entries, should they be the same?

Increased the points.
0
 
LVL 104

Accepted Solution

by:
Sembee earned 175 total points
ID: 12277291
That is the option I was referring to.

Have you got scavenging/aging enabled on DNS?
Look at your AD integrated zone and then choosing "Aging" on the general tab.

Simon.
0
 

Author Comment

by:bshort1023
ID: 12289868
Sorry but I don't know what the integrated zone is and I couldn't find it.  I checked the setting for scavenging by right clicking the server in DNS and chose Set Aging/Scavenging for all zones.  The check box is NOT checked for Scavenge stale resource records.  Both the No-Refresh and Refresh intervals are set to 7 days.
0

Featured Post

Free Tool: Postgres Monitoring System

A PHP and Perl based system to collect and display usage statistics from PostgreSQL databases.

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

Downtime reduced, data recovered by utilizing an Experts Exchange Business Account Challenge The United States Marine Corps employs more than 200,000 active-duty Marines with operations in four continents, all requiring complex networking system…
Trying to figure out group policy inheritance and which settings apply where can be a chore.  Here's a very simple summary I've written which might help.  Keep in mind, this is just a high-level conceptual overview where I try to avoid getting bogge…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

685 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