Solved

Computer name and ip issue (DNS and NETBIOS name does not match)

Posted on 2009-05-11
9
1,386 Views
Last Modified: 2013-11-25
Hi! In my office network (Windows 2003 based) is happening a strange problem: there are a few computers that the DNS names and NetBIOS name does not match, also the computer are using an used name of other computer. Ex:

192.168.1.43 - MACHINE1.domain.org (DNS name) - MACHINE2 (NetBIOS name)

192.168.1.76 - MACHINE2.domain.org (DNS name) - MACHINE2 (NetBIOS name)

Hope you understood my example.

Could someone try to help me with this problem?

Thank you in advance.
0
Comment
Question by:crisoliv
  • 4
  • 3
  • 2
9 Comments
 
LVL 8

Expert Comment

by:sjl1986
ID: 24353933
Try flushing the DNS on both computers as well as the server by going to command prompt and typing:

ipconfig /flushdns

0
 
LVL 10

Expert Comment

by:TekServer
ID: 24354771
How many computers are we talking about?  If it's only a few, would it not be simplest just to manually rename them?

(Right-click "My Computer" -> "Properties" -> "Computer Name" tab -> "Change..." button -> change NetBIOS name where it says "Computer name", "More..." button -> change DNS suffix if needed, verify NetBIOS name; keep clicking "OK" till you're back to the desktop.)

HTH
:)
0
 
LVL 8

Expert Comment

by:sjl1986
ID: 24354871
My assumption was that the computers actually have two different names but are displaying over the network as the same NetBIOS name. If in fact the two NetBIOS names ARE the same, then definitely go with TekServer's answer. Just go and rename one of them.
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:crisoliv
ID: 24360867
Hi! The issue is happening with 5 machines. They have the similar issue that i put in the example. I tried ipconfig /flushdns (also i did put this command in the logon script) and i checked the names as well. All things aparentely are ok, but the computers continue having the issue... :-(
0
 

Author Comment

by:crisoliv
ID: 24363114
Today when i was watching the computer list, 2 others computers are having problems too, so now i have 7 computers with this issue.
0
 
LVL 10

Expert Comment

by:TekServer
ID: 24364352
When you say you were "watching the computer list", what were you using to do so?  If you are using the Windows "My Network Places", this could still be a caching issue (try the "ipconfig /flushdns" on the computer you use to monitor the list).  Otherwise, this could be an artifact of your monitoring software.

Either way, you may want to have a look at some other monitoring software.  I can recommend LookAtLan. (If you click that link, you'll see that LookAtLan is being replaced by "Overlook Fing"; Fing is still a command line tool only at this point, so you may want to click the link at the bottom that says "Click here for old lookatlan website" to get a nice GUI to work with.)

:)
0
 

Author Comment

by:crisoliv
ID: 24364412
Hi Tek! I'm using LookAtLan! :-)
0
 
LVL 10

Accepted Solution

by:
TekServer earned 500 total points
ID: 24366245
So LookAtLan is what's reporting multiple machines with the same name?  Very curious ...

Wait a minute ... I've seen this before.  Are these machines on DHCP?  Because LookAtLan won't automatically clear old records when a machine gets a different IP address.  Take a closer look at the records of the different machines with the same name, and I bet you'll find that all but one of them is listed as "OFFLINE".

If that proves to be the case, you can safely right-click on those entries and remove them from the list.  You can then re-scan to be on the safe side if you want.

HTH
:)
0
 
LVL 10

Expert Comment

by:TekServer
ID: 24418647
Thanks!  Glad I could help.

:)
0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
SPF record issue 6 69
DNS Record - External Public IP (Sonicwall VPN) 9 56
Dns error 6 55
Forest and doamin tree 3 34
Scenerio: You have a server running Server 2003 and have applied a retail pack of Terminal Server Licenses.  You want to change servers or your server has crashed and you need to reapply the Terminal Server Licenses. When you enter the 16-digit lic…
On July 14th 2015, Windows Server 2003 will become End of Support, leaving hundreds of thousands of servers around the world that still run this 12 year old operating system vulnerable and potentially out of compliance in many organisations around t…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…

679 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