[Samba] Multi-homed Samba PDC problem

M. D. Parker mike.parker at ga.com
Wed Apr 7 17:41:17 GMT 2004

The samba PDC is the only PDC for the given domain.

Maybe a picture:

	system A <----private network----> system B <-----> ... system N
		|	(possibly other system)	|				|
		|					|				|
		|					|				|
		|					|				|
		|		public network	|				|
		V					V				V

			WINS server on public network

Both system A and system B are in the same domain.  Only A is the Samba PDC.

so question is when I do not mention the private interface in the interfaces
statement things work OK.

However, when I activate the private interface on the PDC, it times out
to the WINS server, does not apparently become the domain master browser
of this.  However access seems to work just fine otherwise from what I can

Why does adding the private network to the samba configuration cause this
type of problem?


-----Original Message-----
From: samba-bounces+parkerm=ga.com at lists.samba.org
[mailto:samba-bounces+parkerm=ga.com at lists.samba.org]On Behalf Of Arno
Sent: Wednesday, April 07, 2004 9:48 AM
To: samba at lists.samba.org
Subject: AW: [Samba] Multi-homed Samba PDC problem

Hi Mike,

hope i understand everything right,

> Question: What type of problem is this?  and how serious?
It is a windows network problem and or a collision between two PDC´s.

> Question: Ok, how do I correct it?
There are some possible solutions for your problem:


If there is allready a PDC (W2K/NT) then change on
the samba PDC the domain, and create on both sides an
interdomaintrust relationship

Change the Samba config, that it is a Domainmember-Server.

>Binding to the public interface only (via
>bind interfaces, and bind interfaces only) .  The
>examination of the log for NMBD indicates proper registration
>of the Samba PDC as a Domain Master Browser as well
>as Local Master browser on the segment.
>However, adding the private backend interface to the
>samba PDC interfaces statement, the NMBD logs are different.
>Access to the WINS server is indicated as timing out.
>Further, the PDC is unable to register itself as the
>Domain Master Browser, but it does register itself as
>the Local Master Browser.
>The private network is on eth0 and the public on eth3.
>The bind interfaces statement states the interfaces
>in the following order eth3 then eth0.

with kind regards

Arno Seidel

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