Solved

dummy.net sufix blocks access to LAN machines by names

Posted on 2004-08-20
4
259 Views
Last Modified: 2012-06-21
Hello, experts, I have a problem :P

I have 3 machines in my LAN, well configured, same workgroup and they are all naned (PC1, PC2, PC3) and visible with manual configured IP's (192.168.0.1, 192.168.0.2, 192.168.0.3). First of them has a second network card connected to a router (internet). This is "ipconfig" log for it (I delete public IP, sorry :)

Adaptador Ethernet Conexión LAN          :
        Sufijo de conexión específica DNS :
        Dirección IP. . . . . . . . . . . : 192.168.0.1
        Máscara de subred . . . . . . . . : 255.255.255.0
        Puerta de enlace predeterminada   :

Adaptador Ethernet Conexión Router          :
        Sufijo de conexión específica DNS : dummy.net
        Dirección IP. . . . . . . . . . . : ___.___.___.___
        Máscara de subred . . . . . . . . : 255.255.255.0
        Puerta de enlace predeterminada   : ___.___.___.___

Here is the problem. I want to use Automatic IP assignation in my LAN. Time ago, I have not had any problems for this, and doing "ping PC2" from PC1 console returns me right response from PC2. But now, I have problems because "PC2" changes to "PC2.dumy.net" name and same ping command returns bad results (one internet IP, not LAN). What is wrong? Why I have "dummy.net" suffix now for all names I write?

By the way, Windows XP SP1 is installed in all of them, and accesing via explorer to \\PCx is OK. But i cannot use any network program if I write names. I have to put static IP's.

I have tested network wizard by Windows, and I do not want to solve the problem modifying "hosts" file, because I will have to put static IPs. I want "cleaner" solution (time ago it worked).

Ah! And Router connection is also configured with automatic IP's. Router has all data. Perhaps a Router misconfiguration? (I have a 3com 812).

Thanks!
0
Comment
Question by:rabanero
  • 2
4 Comments
 
LVL 11

Expert Comment

by:PennGwyn
ID: 11853012
Your machines are trying to use DNS to resolve names, without trying WINS resolution first. This could work if you had a DDNS server in the network, but you don't.  (It's the preferred config for larger networks using Active Directory, but that's not you either.)

I suspect it's as simple as a checkbox somewhere in the Networking config on each box, labelled something like "Use WINS for name resolution".  Make sure it's turned on.

0
 
LVL 11

Accepted Solution

by:
PennGwyn earned 300 total points
ID: 11853042
Hang on -- \\PCx couldn't work unless WINS resolution was enabled.

In the Networking config, there's a place where you give the local DNS domain as "dummy.net".  Somewhere very close to that is a checkbox which determines whether it first tries to resolve the name without that suffix, and then again with it, or if it only tries with it.  You need the first case....

0

Featured Post

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

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

#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
Internet Business Fax to Email Made Easy - With  eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, f…

813 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

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now