ISP DNS - DHCP or Forwarders

Dave Munday

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Jan 31, 2004, 2:26:28 AM1/31/04

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Folks

I am currently develiponhg my W2K3 migration plan, during testing I have set
my ISP DNS server addresses to be allocated by DHCP and it works fine,

should I be using DNS forwarders to perform the same role

thanks

Marc Reynolds [MSFT]

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Jan 31, 2004, 6:43:34 AM1/31/04

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In active directory environment you willl want your clients to use the DNS
server for your domain, not the ISP's DNS server. Configure your DNS
server(s) to forward to your ISP.

--

Thanks,
Marc Reynolds
Microsoft Technical Support

This posting is provided "AS IS" with no warranties, and confers no rights.

"Dave Munday" <thehapp...@hotmail.com> wrote in message
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Roland Hall

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Jan 31, 2004, 1:31:08 PM1/31/04

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"Dave Munday" wrote:
: I am currently develiponhg my W2K3 migration plan, during testing I have

set
: my ISP DNS server addresses to be allocated by DHCP and it works fine,
:
: should I be using DNS forwarders to perform the same role

Dave...

You should ONLY be using your ISP's DNS servers with a forwarder, if you
decide to create one for ALL internal computers and it is optional.

--
Roland Hall
/* This information is distributed in the hope that it will be useful, but
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or fitness for a particular purpose. */
Online Support for IT Professionals -
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Dave Munday

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Jan 31, 2004, 2:16:35 PM1/31/04

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Roland & Marc many thanks for your time

Roland could you please expand on

" if you decide to create one for ALL internal computers and it is
optional."

thanks
dave

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Kevin D. Goodknecht [MVP]

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Feb 1, 2004, 12:34:54 AM2/1/04

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In news:%238YEQ7C...@TK2MSFTNGP11.phx.gbl,
Dave Munday <thehapp...@hotmail.com> posted a question
Then Kevin replied below:
: Roland & Marc many thanks for your time

:
: Roland could you please expand on
:
: " if you decide to create one for ALL internal computers and it is
: optional."

Forwarders are optional, as long as you delete the Root zone in DNS, the
Root Zone is the Forward Lookup Zone that has a "."(dot) for a name. As long
as the root is gone your DNS server will use Root Hints to resolve names on
the internet.
Enabling a forwarder converts your DNS server to a resolving caching proxy,
in other words it forwards external names to the defined forwarder for it to
resolve and return the answer. It doesn't necessarily make resolution faster
but it does give the internal DNS the ability to resolve more external
queries in a shorter period of time.
Just make sure that all internal domain member machines are using the
internal DNS ONLY. If you don't you may have problems joining XP Pro
machines to the Domain and Will extend the logon time considerably for all
domain members. They will be trying to locate the DC in DNS, and if you use
an external DNS they won't find the DC's SRV records.

This is off topic for your question, since you are using Win2k3 you need to
look in your Routers documentation to see if it supports EDNS0 (UDP packets
over 512 bytes) many routers don't and is causes DNS errors. Some companies
have begun releasing firmware updates to allow this protocol and you can
check on that. Until then read this KB and run the command from your DNS
machine.
828731 - An External DNS Query May Cause an Error Message in Windows Server
2003
http://support.microsoft.com/default.aspx?scid=kb;en-us;828731&Product=winsvr2003

--
Best regards,
Kevin D4 Dad Goodknecht Sr. [MVP]
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Dave Munday

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Feb 1, 2004, 2:32:52 AM2/1/04

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Kevin
manu thanks

Dave

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