[ExchangeList] Re: Change private IP on a cluster- In DNS, multiple computers can be named with the same name

  • From: "Jose Medeiros" <josemedeiros@xxxxxxxxxxx>
  • To: <exchangelist@xxxxxxxxxxxxx>, <ActiveDir@xxxxxxxxxxxxxxxxxx>
  • Date: Wed, 7 Jun 2006 05:27:53 -0700

http://www.msexchange.org
-------------------------------------------------------Hi Jim,

I agree with you and I do find technet article's that are unclear and are missing steps, however much of it is, that Microsoft has only 5 or 6 people creating that content and probably do not always test ( Or have very limited testing ) what they are listing.

However, this section below makes a lot a sense. If you have a very flat domain, you probably would not have an issue. But if you have a large World Wide enterprise such as Microsoft, Cisco, Intel, Ford Motor Comany, GM, etc, with a very complex network and many DNS sub domains and childs, this may be an issue.

( Please read this sections )
" Name collisions cannot occur when you use WINS. In a WINS environment, only one computer can be named SERVERA. In DNS, multiple computers can be named SERVERA. For example, one computer may be named SERVERA.EUROPE.DOMAIN.COM and another computer may be named SERVERA.AMERICA.DOMAIN.COM. If a user who is located in the AMERICA domain types \\SERVERA, they connect to SERVERA in the AMERICA domain. If a user who is located in the AMERICA domain wants to connect to SERVERA in the EUROPE domain, that user must specify the fully qualified domain name (FQDN) SERVERA.EUROPE.DOMAIN.COM. Some programs may only permit entries with a maximum of 15 characters for NetBIOS names. These programs may still work if a mechanism exists to avoid duplicate host names and if the DNS suffix list of domains is provided to all clients."


Any one from Microsoft care to comment on this?

Jose :-)
--------------------------------------------------------------------------------------------------
----- Original Message ----- From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
To: <exchangelist@xxxxxxxxxxxxx>
Sent: Tuesday, June 06, 2006 5:56 AM
Subject: [ExchangeList] Re: Change private IP on a cluster- Reply-Reply



http://www.msexchange.org
-------------------------------------------------------

Some articles are written with good intent, but bad information.
I spend about 10% of my time getting those corrected.

-----Original Message-----
From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Jose Medeiros
Sent: Monday, June 05, 2006 10:13 PM
To: exchangelist@xxxxxxxxxxxxx; ActiveDir@xxxxxxxxxxxxxxxxxx
Subject: [ExchangeList] Change private IP on a cluster- Reply-Reply

http://www.msexchange.org
-------------------------------------------------------Hi Jim,

Are you sure that holds true on a clustered Exchange 2000 server?  I
recall
from my Microsoft 2000 server clustering class at Quickstart
Intelligence
back in 2001,
http://www.quickstart.com/courses/course.asp?cat=Windows&type=88&course=
2087
that the instructor stated that both Exchange 2000 and SQL 2000
clustered
was dependent on NETBIOS. Was this changed in a later service pack? Why
would Microsoft create this article dated:Article ID : 837391
     Last Review : March 30, 2006
     Revision : 4.0


Jose :-)

------------------------------------------------------------------------
-----
----- Original Message ----- From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
To: <exchangelist@xxxxxxxxxxxxx>; <ActiveDir@xxxxxxxxxxxxxxxxxx>
Sent: Monday, June 05, 2006 10:01 PM
Subject: [ExchangeList] Re: Change private IP on a cluster- Reply



http://www.msexchange.org
-------------------------------------------------------Neither one had

this dependency.
Exch 2000 runs only on Win2K and Win2K3.
Both of these OS prefer DNS to WINS for name resolution and if your
network structure provides good DNS services, WINS is a non-issue for
Exchange 2K+.

-----Original Message-----
From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Jose Medeiros
Sent: Monday, June 05, 2006 9:56 PM
To: ActiveDir@xxxxxxxxxxxxxxxxxx; exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Change private IP on a cluster- Reply

http://www.msexchange.org
-------------------------------------------------------Hi Jim,

Looks like your post never made it to the Active Dir list. If I recall
Exchange 2000 clustered still had dependencies on Wins, and I was told
at a
Microsoft Technet event that Exchange 2003 clustered no longer had
this
requirement, until I saw the  Microsoft article that I pointed out
http://support.microsoft.com/default.aspx?scid=kb;en-us;837391 .

Jose


----- Original Message ----- From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
To: <exchangelist@xxxxxxxxxxxxx>; <ActiveDir@xxxxxxxxxxxxxxxxxx>
Cc: <mike.newell@xxxxxxxxxxxx>
Sent: Monday, June 05, 2006 6:17 AM
Subject: [ExchangeList] Re: Change private IP on a cluster



http://www.msexchange.org
-------------------------------------------------------837391 is
getting
changed.
I'm putting in the technical update today.

It's wrong
Wrong, wrong, wrong.
Wrgonggitty-wrong-wrong Wrong!

WINS is *NOT* required for Exch functionality, but proper name
resolution support in the network *IS* required.  If you've built
your
network, name services & clients properly, using a "simple" name gets
you the same response as using FQDN in a "ping" command.

-----Original Message-----
From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Jose Medeiros
Sent: Sunday, June 04, 2006 10:29 PM
To: ActiveDir@xxxxxxxxxxxxxxxxxx; exchangelist@xxxxxxxxxxxxx
Cc: mike.newell@xxxxxxxxxxxx
Subject: [ExchangeList] Change private IP on a cluster

http://www.msexchange.org
-------------------------------------------------------Hi Mike,

Looks like you are going to also have dependencies on Wins and with
the
MSDTC:

Exchange Server 2003 and Exchange 2000 Server require NetBIOS name
resolution for full functionality
http://support.microsoft.com/default.aspx?scid=kb;en-us;837391

How to configure Microsoft Distributed Transaction Coordinator on a
Windows
Server 2003 cluster
http://support.microsoft.com/default.aspx?scid=kb;en-us;301600

Regards,

Jose :-)

--------------------------------------------------------------------

----- Original Message ----- From: Jose Medeiros
To: ActiveDir@xxxxxxxxxxxxxxxxxx ; exchangelist@xxxxxxxxxxxxx
Cc: mike.newell@xxxxxxxxxxxx
Sent: Sunday, June 04, 2006 9:53 PM
Subject: Re: [ActiveDir] Change private IP on a cluster



Hi Mike,

I've only had to change a SQL 2000 Active / Active Cluster IP and it
involves some additional steps for SQL Virtual Names. It's been over
5
years
since I built an Exchange 2000 cluster, but I do not recall if
Exchange
has
any dependencies (I would probably post this to the Exchange list and
I
am
cc'ing them as well)

Take a look at :
Exchange Server 2003 Cluster Configuration Checklist


http://www.microsoft.com/technet/itsolutions/msit/operations/exchcluster
cklist.mspx?pf=true

Changing the IP address of network adapters in cluster server
http://support.microsoft.com/kb/230356/EN-US/

Or in PDF format at:


http://www.maned.com/support/knowledge_base/Roundhouse/Recommended_Readi
ng/Q230356.pdf

Also just in case you ever have to change it on a SQL:

How to change the network IP addresses of SQL Server virtual servers
http://support.microsoft.com/kb/244980/en-us

Hope this helps,

Sincerely,
Jose Medeiros
MCP+I, MCSE, NT4 MCT
408-765-0437 Direct
408-449-6621 Cell


------------------------------------------------------------------------
--------------------
----- Original Message ----- From: "Mike Newell" <mike.newell@xxxxxxxxxxxx>
To: <ActiveDir@xxxxxxxxxxxxxxxxxx>
Sent: Sunday, June 04, 2006 12:53 PM
Subject: [ActiveDir] Change private IP on a cluster



Doh! Didn't mean to let this go without the OT:. Sorry.

________________________________

From: ActiveDir-owner@xxxxxxxxxxxxxxxxxx on behalf of Mike Newell
Sent: Sun 6/4/2006 11:40 AM
To: ActiveDir@xxxxxxxxxxxxxxxxxx
Subject: [ActiveDir] Change private IP on a cluster


Hey, I have an Exchange 2003 active/passive cluster on Windows 2003 and I need to change the private ip on both nodes. I realize that while I'm changing the IP the nodes will not talk to each other and likely kick the passive node off or stop the cluster service for a few minutes on the passive node.

Is there anything else I will need to do or look out for? I don't
*think* this is a big deal but since it's a production cluster, and
I've
never had to do this, I thought I would check before I tried it.

Thanks again.

Mike.

-------------------------------------------------------



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