Netbios Traffic 1

[alns]

It appears that NT workstations are flooding our network with udp netbios traffic to the last IP address in our subnet. We have 2000 server with some 2000 workstations and NT workstations. How can we remove this traffic?

 

[jamesgarlick]

remove the server? just joking

what type of udp packets are there either wins, dns type stuff. what does the server do?

need more info...

or mail me a small piece of the trace.

 

[otty]

if you dont have WINS server...it is common for every single Windows PC / Server to generate broadcast

if you do have WINS, then change the node type to P-Node <point to point> so it will point the netbios resolution to WINS server

You can change in DHCP to, netbios node to P-node

if you can you may change all node to automatically switch to p node <or else as u might> as follow :

Microsoft Knowledge Base Article - Q167640
Automatically Changing the Node Type of a Windows NT Workstation
The information in this article applies to:
Microsoft Windows NT Workstation 3.51, 4.0
Microsoft Windows NT Server 3.51, 4.0
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows 2000 Advanced Server

SUMMARY

In network installations, where IP addresses are assigned statically (DHCP is not used), it is often desirable to change the NetBIOS name resolution node type of a computer. This is time consuming when large numbers of computers are involved because an administrator must edit the registry of each computer where the node type is to be changed.

This article describes one possible method of automating the change.
MORE INFORMATIONCreate the following two-line text file and save it in ANSI (Windows) or DOS text format. It will not work if saved as a Unicode file.

\Registry\Machine\System\CurrentControlSet\Services\NetBT\Parameters
NodeType = REG_DWORD 0x00000004

NOTE: Use 0x00000008 for hybrid node or h-node
Use 0x00000004 for mixed node or m-node
Use 0x00000002 for point-to-point WINS or p-node
Use 0x00000001 for broadcast node or b-node

For additional information with descriptions of the various settings for this key, please see the following Microsoft Knowledge Base articles:
ARTICLE-ID: Q160177
TITLE : Default Node Type For Microsoft Clients

ARTICLE-ID: Q120642
TITLE : TCP/IP and NBT Configuration Parameters for Windows 2000 or Windows NT
Save the file as M-NODE.INI (change the first letter for node types other than mixed).
Copy this file and the file Regini.exe from the Windows NT &quot;Resource Kit&quot; to either a floppy drive or a network share.
The following command, executed at a workstation from the path where Regini.exe and M-NODE.INI are stored, will change the node type to mixed. Changing to other node types is done in the same fashion.
REGINI M-NODE.INI
This could be automated further by enclosing it in a batch file, or a logon script:
@ECHO OFF
REM NODE.BAT
IF /I &quot;%1&quot; == &quot;h&quot; REGINI H-NODE.INI & GOTO END
IF /I &quot;%1&quot; == &quot;m&quot; REGINI M-NODE.INI & GOTO END
IF /I &quot;%1&quot; == &quot;p&quot; REGINI P-NODE.INI & GOTO END
IF /I &quot;%1&quot; == &quot;b&quot; REGINI B-NODE.INI & GOTO END
ECHO USAGE: NODE X where X is the desired node type (H, M, P, OR B).
:END