Re: DNS Question

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From: Jim K (_at_siena.org)
Date: 02/11/05 

Date: Fri, 11 Feb 2005 09:14:33 -0700

XP doesn't load balance, as far as I know. If you have an alternate DNS
specified, your client will go to it if there's even a small delay (1
sec, I think) on the primary.

Can't think of any reason why you shouldn't add the external DNS as a
secondary, but you wouldn't want to eliminate the local net DNS. AD
depends upon it. Also, I don't know much Internet traffic you're dealing
with, but your local DNS cache can reduce your WAN bandwitch consumption
considerably.

Jim K

Matt Gibson wrote:
> Why then when I put two DNS servers in, fire up ethereal, go surfing, do I
> see queries going out to both DNS servers?
>
> To me it would seem it load balances across both.
>
> Matt Gibson - GSEC
>
> ""Justin Crosby [MSFT]"" <jcrosby@online.microsoft.com> wrote in message
> news:hSOx1L6DFHA.952@TK2MSFTNGXA01.phx.gbl...
>
>>Hello,
>>
>>If you add a second IP make sure that the SBS 2003 server's intenal IP is
>>listed FIRST. This should work in most instances. If you start having
>>name resolution issues remove the external address from the client's DNS.
>>
>>Best Regards,
>>
>>
>>Justin Crosby, MCSE
>>Microsoft Online Support Engineer
>>
>>Get Secure! - www.microsoft.com/security
>>
>>=====================================================
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>>--------------------
>>
>>>Thread-Topic: DNS Question
>>>thread-index: AcUPjaH2VXsi4Mn8RCKtoM37rj84gw==
>>>X-WBNR-Posting-Host: 63.243.26.10
>>>From: "=?Utf-8?B?U3RldmU=?=" <Steve@discussions.microsoft.com>
>>>Subject: DNS Question
>>>Date: Thu, 10 Feb 2005 08:29:03 -0800
>>>Lines: 29
>>>Message-ID: <CDA90BC9-751B-41E4-9793-FD0F094B0B46@microsoft.com>
>>>MIME-Version: 1.0
>>>Content-Type: text/plain;
>>>charset="Utf-8"
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>>>X-Newsreader: Microsoft CDO for Windows 2000
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>>>Importance: normal
>>>Priority: normal
>>>X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.0
>>>Newsgroups: microsoft.public.windows.server.sbs
>>>NNTP-Posting-Host: TK2MSFTNGXA03.phx.gbl 10.40.1.29
>>>Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGXA03.phx.gbl
>>>Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windows.server.sbs:93707
>>>X-Tomcat-NG: microsoft.public.windows.server.sbs
>>>
>>>I have read many posts where the advice is to have only the SBS 2003 Std
>>>server as the DNS entry on client workstations, to not have the public DNS
>>>addresses on the client workstations. My network is currently configured
>>
>>that
>>
>>>way and it works.
>>>
>>>I would like to add the public DNS addresses to the client workstations.
>>
>>The
>>
>>>sole reason for this is to allow the clients to continue working if the
>>
>>SBS
>>
>>>server were ever unavailable, for any reason.
>>>
>>>The only functions our SBS server provide are Authentication, Email and
>>>Intranet. The users should be able to continue working without these
>>>functions.
>>>
>>>Applications reside on a ISeries and accressed per IP Address. Other
>>>applications are b2b web-sites, accessed per public DNS entries.
>>>
>>>The Server has only one NIC, entire network is behind Firebox.
>>>
>>>The other benefit of having the public DNS entries. No more nights and
>>>weekends for me, I can do maintenance, apply patches and reboot the SBS
>>>during normal business hours....
>>>
>>>Why Should I NOT add the public DNS entries on the workstations?
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>
>

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