Re: Dual NIC vs Single NIC

Hello Henrik,

Thank you for your prompt. The mostly links are updated. I'm sorry for my
careless.

The new updated links locate at:

How DNS Works
http://technet2.microsoft.com/WindowsServer/en/library/19a63021-cc53-4ded-a7
a3-abaf82e7fb7c1033.mspx?mfr=true

Understanding DNS
http://technet2.microsoft.com/windowsserver/en/library/26bef3dd-4ffe-41c4-84
c0-8e7de586ef541033.mspx?mfr=true

How DNS query works
http://technet2.microsoft.com/windowsserver/en/library/0bcd97e6-b75d-48ce-83
ca-bf470573ebdc1033.mspx?mfr=true

Troubleshooting DNS servers
http://technet2.microsoft.com/WindowsServer/en/library/e42d510a-443d-4c31-96
da-f66a67a89d861033.mspx?mfr=true

I hope these will give you some help.

Thanks again and have a nice day!

Best regards,

Terence Liu(MSFT)

Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security

=====================================================
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=====================================================

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

--------------------
| From: "Henrik \(Hear\)" <hear01@xxxxxxxxxxxxxxxxxxxxxxx>
| References: <FA164BBD-4DB2-452C-ADF2-9AE5BCEA6430@xxxxxxxxxxxxx>
<ebEUjegfIHA.2540@xxxxxxxxxxxxxxxxxxxx>
<33796A03-8F47-4D52-AC09-1046343B1ABA@xxxxxxxxxxxxx>
<ekU3lVsfIHA.3940@xxxxxxxxxxxxxxxxxxxx>
<26E842FE-6BEF-4E0F-BE4E-B60A50CB6D3A@xxxxxxxxxxxxx>
<vw0WxA0fIHA.6616@xxxxxxxxxxxxxxxxxxxxxx>
<#r7HpK0fIHA.4684@xxxxxxxxxxxxxxxxxxxx>
<A6$vBqAgIHA.5204@xxxxxxxxxxxxxxxxxxxxxx>
<#wOI0JCgIHA.484@xxxxxxxxxxxxxxxxxxxx>
<9ZSSxzpgIHA.4672@xxxxxxxxxxxxxxxxxxxxxx>
<#SwFNlqgIHA.5752@xxxxxxxxxxxxxxxxxxxx>
<VnWXzhygIHA.1500@xxxxxxxxxxxxxxxxxxxxxx>
| Subject: Re: Dual NIC vs Single NIC
| Date: Fri, 14 Mar 2008 20:08:03 +0100
| Lines: 892
| X-Priority: 3
| X-MSMail-Priority: Normal
| X-Newsreader: Microsoft Outlook Express 6.00.3790.2929
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| Newsgroups: microsoft.public.windows.server.sbs
| NNTP-Posting-Host: ua-83-227-148-196.cust.bredbandsbolaget.se
83.227.148.196
| Path: TK2MSFTNGHUB02.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTNGP04.phx.gbl
| Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windows.server.sbs:98363
| X-Tomcat-NG: microsoft.public.windows.server.sbs
|
| Therence,
| Can you pls provide me with correct working links to your references
below?
| I would apprecitae that very much. This thread and your information has
been
| very educating and I would like to read moore about the subject.
| And I wish to thank SuperG for argueing for and against facts.
|
| > | > 261968 Explanation of the Server List Management Feature in the
Domain
| > | > Name
| > | > http://support.microsoft.com/?id=261968
| >
http://www.microsoft.com/resources/documentation/WindowsServ/2003/standard/p
| > | > roddocs/en-us/sag_DNS_und_HowDnsWorks.asp
| > | >
| > | >
| >
http://www.microsoft.com/resources/documentation/WindowsServ/2003/standard/p
| > | > roddocs/en-us/sag_DNS_ovr_ClientFeatures.asp
| > | >
| > | > 135919 DNS Server Search Order Functionality in Windows
| > | > http://support.microsoft.com/?id=135919
|
| Regards
|
| --
| Henrik Arenblad, MCP SBS,
|
|
|
|
|
|
| "Terence Liu [MSFT]" <v-terliu@xxxxxxxxxxxxxxxxxxxx> wrote in message
| news:VnWXzhygIHA.1500@xxxxxxxxxxxxxxxxxxxxxxxxx
| > Hello SuperGumby,
| >
| > Thank you for helping me to correct the misunderstand of DNS query
| > process.
| >
| > Thank you again for your supplement about the client DNS cache issue. I
| > hope all of them are help for Joe.
| >
| > Have a nice day.
| >
| > Best regards,
| >
| > Terence Liu(MSFT)
| >
| > Microsoft CSS Online Newsgroup Support
| >
| > Get Secure! - www.microsoft.com/security
| >
| > =====================================================
| > This newsgroup only focuses on SBS technical issues. If you have issues
| > regarding other Microsoft products, you'd better post in the
corresponding
| > newsgroups so that they can be resolved in an efficient and timely
manner.
| > You can locate the newsgroup here:
| > http://www.microsoft.com/communities/newsgroups/en-us/default.aspx
| >
| > When opening a new thread via the web interface, we recommend you check
| > the
| > "Notify me of replies" box to receive e-mail notifications when there
are
| > any updates in your thread. When responding to posts via your
newsreader,
| > please "Reply to Group" so that others may learn and benefit from your
| > issue.
| >
| > Microsoft engineers can only focus on one issue per thread. Although we
| > provide other information for your reference, we recommend you post
| > different incidents in different threads to keep the thread clean. In
| > doing
| > so, it will ensure your issues are resolved in a timely manner.
| >
| > For urgent issues, you may want to contact Microsoft CSS directly.
Please
| > check http://support.microsoft.com for regional support phone numbers.
| >
| > Any input or comments in this thread are highly appreciated.
| > =====================================================
| >
| > This posting is provided "AS IS" with no warranties, and confers no
| > rights.
| >
| > --------------------
| > | From: "SuperGumby [SBS MVP]" <not@xxxxxxxxxxx>
| > | References: <FA164BBD-4DB2-452C-ADF2-9AE5BCEA6430@xxxxxxxxxxxxx>
| > <ebEUjegfIHA.2540@xxxxxxxxxxxxxxxxxxxx>
| > <33796A03-8F47-4D52-AC09-1046343B1ABA@xxxxxxxxxxxxx>
| > <ekU3lVsfIHA.3940@xxxxxxxxxxxxxxxxxxxx>
| > <26E842FE-6BEF-4E0F-BE4E-B60A50CB6D3A@xxxxxxxxxxxxx>
| > <vw0WxA0fIHA.6616@xxxxxxxxxxxxxxxxxxxxxx>
| > <#r7HpK0fIHA.4684@xxxxxxxxxxxxxxxxxxxx>
| > <A6$vBqAgIHA.5204@xxxxxxxxxxxxxxxxxxxxxx>
| > <#wOI0JCgIHA.484@xxxxxxxxxxxxxxxxxxxx>
| > <9ZSSxzpgIHA.4672@xxxxxxxxxxxxxxxxxxxxxx>
| > | Subject: Re: Dual NIC vs Single NIC
| > | Date: Mon, 10 Mar 2008 23:21:40 +1100
| > | Lines: 657
| > | X-Priority: 3
| > | X-MSMail-Priority: Normal
| > | X-Newsreader: Microsoft Outlook Express 6.00.3790.3959
| > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4133
| > | X-RFC2646: Format=Flowed; Original
| > | Message-ID: <#SwFNlqgIHA.5752@xxxxxxxxxxxxxxxxxxxx>
| > | Newsgroups: microsoft.public.windows.server.sbs
| > | NNTP-Posting-Host: cpe-121-217-134-196.nsw.bigpond.net.au
| > 121.217.134.196
| > | Path: TK2MSFTNGHUB02.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTNGP03.phx.gbl
| > | Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windows.server.sbs:97405
| > | X-Tomcat-NG: microsoft.public.windows.server.sbs
| > |
| > | G'day Terence,
| > |
| > | we all learn my friend, and I am glad to see your response, not
for
| > the
| > | 'admitted mistake' but to see that you have gone looking for the right
| > | answers.
| > |
| > | You also now explain why and the possible 'workarounds'. High
points
| > for
| > | doing so.
| > |
| > | You are not the 1st, nor last, person to misunderstand this before
| > | looking more closely at the process.
| > |
| > | I will again argue that turning off the client DNS cache (0
refresh
| > | time) is not a good idea, causing the DNS client to pass all queries
to
| > a
| > | server rather than using locally cached information may slow things
| > down.
| > | This argument results in what I consider a 'foregone conclusion', AD
| > members
| > | should _only_ look to AD aware DNS servers for name resolution (WINS
is
| > | almost dead, and the Browser Service should be dead but is needed in
| > some
| > | circumstances). Processes which require name resolution will normally
| > 'fall
| > | back' through available name resolution methods, it is the timeouts
and
| > | delays that cause us grief. If a name isn't available by one
mechanism,
| > or
| > | appears not to be available (slow DNS response), it is likely that
the
| > OS
| > | will satisfy the query by another mechanism but this may happen
outside
| > the
| > | application's timeout period. If the app regenerates the query and
| > cached
| > | information is available the query will not timeout.
| > |
| > | "Terence Liu [MSFT]" <v-terliu@xxxxxxxxxxxxxxxxxxxx> wrote in message
| > | news:9ZSSxzpgIHA.4672@xxxxxxxxxxxxxxxxxxxxxxxxx
| > | > Hello SuperGumby and Joe,
| > | >
| > | > I'm sorry for the delay response and I had discussed this DNS query
| > issue
| > | > with DNS support engineers.
| > | >
| > | > I need to say I'm wrong. I was misunderstanding the DNS query
process.
| > I
| > | > get the KB261968 to describe this process.
| > | >
| > | > 261968 Explanation of the Server List Management Feature in the
Domain
| > | > Name
| > | > http://support.microsoft.com/?id=261968
| > | >
| > | > We can configure an external DNS server entry in the clients TCP/IP
| > | > properties as an alternate DNS. The clients will be able to access
the
| > | > Internet when the SBS server is offline. However, after we reload
the
| > SBS
| > | > server into the network, we need to reboot the client computers so
| > that
| > | > the
| > | > clients will go back to use the SBS server as DNS service provider.
| > | >
| > | > If you are using Windows 2000 or Windows XP as the client OS, the
| > | > computers
| > | > will build a DNS server search list. This mechanism is used to
improve
| > the
| > | > DNS query performance of the client computers. All the DNS servers
you
| > | > configured for the client computer will be put into the list. The
| > client
| > | > computer queries the DNS server from the top of the list. If there
is
| > no
| > | > response from the first DNS server, the client computer will then
| > query
| > | > the
| > | > second DNS server and move the first DNS server to the bottom of the
| > list.
| > | > This causes the DNS query still goes to the second server after
| > recovering
| > | > the primary server.
| > | >
| > | > More information:
| > | > How DNS query works
| > | >
| >
http://www.microsoft.com/resources/documentation/WindowsServ/2003/standard/p
| > | > roddocs/en-us/sag_DNS_und_HowDnsWorks.asp
| > | >
| > | >
| >
http://www.microsoft.com/resources/documentation/WindowsServ/2003/standard/p
| > | > roddocs/en-us/sag_DNS_ovr_ClientFeatures.asp
| > | >
| > | > 135919 DNS Server Search Order Functionality in Windows
| > | > http://support.microsoft.com/?id=135919
| > | >
| > | >
| > | > Hello Joe,
| > | >
| > | > I'm sorry for my mistake.
| > | >
| > | > I would suggest that we have a second DC in the SBS domain. The
second
| > DC
| > | > would also have to be a DNS server and a GC, and as long as it's
DNS
| > its
| > | > set as secondary for the clients, the clients should still be able
to
| > | > authenticate using the second DC if SBS goes down. Of course there
| > would
| > | > be
| > | > no access to any resources hosted on SBS, such as Exchange or the
User
| > | > shared folders.
| > | >
| > | > As to the DNS query doesn't get back to the first listed DNS server
| > issue,
| > | > DNS client will use a single server (per NIC) and not change that
| > server
| > | > unless it gets no response. When it receives no response from the
| > primary
| > | > DNS server on a NIC it will loop through the servers in order
timing
| > out
| > | > each one until it receives a valid response. The server that gives
it
| > a
| > | > valid response will be tagged as the primary DNS server for that NIC
| > until
| > | > one of 4 events:
| > | >
| > | > 1. Reboot
| > | > 2. Disable/re-enable the NIC
| > | > 3. Stop/start the DNS client service
| > | > 4. The server fails to respond to a DNS request in which case the
| > above
| > | > process starts again with the next server on the list.
| > | > 5. The DNS client is forced to query the first listed DNS server
(see
| > | > below.)
| > | >
| > | > I. There's a registry key in Windows 2000 that allow this "client"
to
| > hold
| > | > its DNS server priority for a certain time period before querying
the
| > | > failed primary DNS server again. If the value is zero which means it
| > | > always
| > | > queries the primary DNS before trying the others IP on the list:
| > | >
| > | > Note: On W2k sp3 and later, the key is not shown, unless it was
| > manually
| > | > entered or a hotfix was applied that entered the key.
| > | >
| > | > 1. In the Windows registry of the Exchange server, go to the Key:
| > | >
| >
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dnscache\Parameters.
| > | >
| > | > 2. Look for the value: ResetServerPrioritiesTimeInterval or
| > | > ServerPriorityTimeLimit.
| > | >
| > | > 3. Please note whether either of these values are found and their
data
| > | > value. If neither keys are found, proceed below:
| > | > a) Enter in new value: ServerPriorityTimeLimit
| > | > b) Set Data type to REG_DWORD
| > | > c) Range: 384 (HEX)
| > | >
| > | > This will hold the DNS server priority list for 900 seconds (384
Hex)
| > | > before querying the top of the DNS list again: ''286834 The DNS
Client
| > | > Service Does Not Revert to Using the First Server in the -
| > | > http://support.microsoft.com/?id=286834''.
| > | >
| > | > II. For Windows XP and above:
| > | >
| > | > 320760 The DNS Client Service Does Not Revert to Using the First
| > Server
| > in
| > | > the list in Windows XP
| > | > http://support.microsoft.com/?id=320760
| > | >
| > | > 318803 How to Disable Client-Side DNS Caching in Windows XP and
| > Windows
| > | > Server
| > | > http://support.microsoft.com/?id=318803
| > | >
| > | > I hope the above information helps. If you have any questions,
please
| > feel
| > | > free to let me know.
| > | >
| > | > Have a nice day!
| > | >
| > | > Best regards,
| > | >
| > | > Terence Liu(MSFT)
| > | >
| > | > Microsoft CSS Online Newsgroup Support
| > | >
| > | > Get Secure! - www.microsoft.com/security
| > | >
| > | > =====================================================
| > | > This newsgroup only focuses on SBS technical issues. If you have
| > issues
| > | > regarding other Microsoft products, you'd better post in the
| > corresponding
| > | > newsgroups so that they can be resolved in an efficient and timely
| > manner.
| > | > You can locate the newsgroup here:
| > | > http://www.microsoft.com/communities/newsgroups/en-us/default.aspx
| > | >
| > | > When opening a new thread via the web interface, we recommend you
| > check
| > | > the
| > | > "Notify me of replies" box to receive e-mail notifications when
there
| > are
| > | > any updates in your thread. When responding to posts via your
| > newsreader,
| > | > please "Reply to Group" so that others may learn and benefit from
your
| > | > issue.
| > | >
| > | > Microsoft engineers can only focus on one issue per thread.
Although
| > we
| > | > provide other information for your reference, we recommend you post
| > | > different incidents in different threads to keep the thread clean.
In
| > | > doing
| > | > so, it will ensure your issues are resolved in a timely manner.
| > | >
| > | > For urgent issues, you may want to contact Microsoft CSS directly.
| > Please
| > | > check http://support.microsoft.com for regional support phone
numbers.
| > | >
| > | > Any input or comments in this thread are highly appreciated.
| > | > =====================================================
| > | >
| > | > This posting is provided "AS IS" with no warranties, and confers no
| > | > rights.
| > | >
| > | > --------------------
| > | > | From: "SuperGumby [SBS MVP]" <not@xxxxxxxxxxx>
| > | > | References: <FA164BBD-4DB2-452C-ADF2-9AE5BCEA6430@xxxxxxxxxxxxx>
| > | > <ebEUjegfIHA.2540@xxxxxxxxxxxxxxxxxxxx>
| > | > <33796A03-8F47-4D52-AC09-1046343B1ABA@xxxxxxxxxxxxx>
| > | > <ekU3lVsfIHA.3940@xxxxxxxxxxxxxxxxxxxx>
| > | > <26E842FE-6BEF-4E0F-BE4E-B60A50CB6D3A@xxxxxxxxxxxxx>
| > | > <vw0WxA0fIHA.6616@xxxxxxxxxxxxxxxxxxxxxx>
| > | > <#r7HpK0fIHA.4684@xxxxxxxxxxxxxxxxxxxx>
| > | > <A6$vBqAgIHA.5204@xxxxxxxxxxxxxxxxxxxxxx>
| > | > | Subject: Re: Dual NIC vs Single NIC
| > | > | Date: Fri, 7 Mar 2008 18:11:20 +1100
| > | > | Lines: 378
| > | > | X-Priority: 3
| > | > | X-MSMail-Priority: Normal
| > | > | X-Newsreader: Microsoft Outlook Express 6.00.3790.3959
| > | > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4133
| > | > | X-RFC2646: Format=Flowed; Original
| > | > | Message-ID: <#wOI0JCgIHA.484@xxxxxxxxxxxxxxxxxxxx>
| > | > | Newsgroups: microsoft.public.windows.server.sbs
| > | > | NNTP-Posting-Host: cpe-121-217-134-196.nsw.bigpond.net.au
| > | > 121.217.134.196
| > | > | Path:
| > TK2MSFTNGHUB02.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTNGP06.phx.gbl
| > | > | Xref: TK2MSFTNGHUB02.phx.gbl
| > microsoft.public.windows.server.sbs:97004
| > | > | X-Tomcat-NG: microsoft.public.windows.server.sbs
| > | > |
| > | > | and read my reply, and look into how the DNS Client operates.
| > | > |
| > | > | The DNS client will not switch back to using SBS until a timeout
is
| > | > reached
| > | > | or the machine is restarted. During normal operation when SBS DNS
is
| > | > | available, if it is delayed for some reason (busy SBS) the
alternate
| > DNS
| > | > | server will be used and AD queries will not be satisfied, again,
not
| > | > | changing back immediately the SBS DNS Server becomes available
but
| > at
| > | > some
| > | > | later time. Yes, there is a reg change that can reduce and/or
| > eliminate
| > | > the
| > | > | delay in switching from the 'alternate' back to the 'primary',
| > please
| > do
| > | > not
| > | > | promote it's use either, the behaviour defaults to what it is
| > because
| > it
| > | > | should.
| > | > |
| > | > | The mixed use of AD + non-AD aware DNS servers is a major
| > contributor
| > to
| > | > | 'odd problems', things going wrong intermittently, NOT on SBS
| > networks
| > | > but
| > | > | on _ANY_ AD (ie. the problem is not SBS specific, it affects all
| > Windows
| > | > DNS
| > | > | clients needing to query AD)
| > | > |
| > | > | "Terence Liu [MSFT]" <v-terliu@xxxxxxxxxxxxxxxxxxxx> wrote in
| > message
| > | > | news:A6$vBqAgIHA.5204@xxxxxxxxxxxxxxxxxxxxxxxxx
| > | > | > Hello SuperGumby,
| > | > | >
| > | > | > Thank you for your reply.
| > | > | >
| > | > | > Please read my reply carefully.
| > | > | >
| > | > | > In my suggestion, we try to make the DHCP on SBS to assign TWO
DNS
| > | > servers
| > | > | > to all client computers. The first (Primary) DNS is pointing to
| > SBS
| > | > (AD),
| > | > | > the second (Alternate) DNS is pointing to ISP.
| > | > | >
| > | > | > Note: After the client gets IP configuration from SBS, we can
run
| > | > | > "ipconfig
| > | > | > /all" on client to verify it gets TWO DNS servers.
| > | > | >
| > | > | > 1. When the SBS in work, the client uses the first (Primary)
DNS
| > to
| > | > | > resolve
| > | > | > AD related names and Internet domain names.
| > | > | >
| > | > | > 2. When the SBS shutdown, the client unable to use the first
| > (Primary)
| > | > | > DNS,
| > | > | > it will try to use the second (Alternate) DNS to resolve
Internet
| > | > domain
| > | > | > names.
| > | > | >
| > | > | > 3. When the SBS starts again, the client will automatically use
| > the
| > | > first
| > | > | > (Primary) DNS instead of second (Alternate). We do not need to
do
| > | > | > anything,
| > | > | > and we will not experience any AD related name resolution issue.
| > | > | >
| > | > | > Hope that clearly.
| > | > | >
| > | > | > Thanks and have a nice day!
| > | > | >
| > | > | > Best regards,
| > | > | >
| > | > | > Terence Liu(MSFT)
| > | > | >
| > | > | > Microsoft CSS Online Newsgroup Support
| > | > | >
| > | > | > Get Secure! - www.microsoft.com/security
| > | > | >
| > | > | > =====================================================
| > | > | > This newsgroup only focuses on SBS technical issues. If you have
| > | > issues
| > | > | > regarding other Microsoft products, you'd better post in the
| > | > corresponding
| > | > | > newsgroups so that they can be resolved in an efficient and
timely
| > | > manner.
| > | > | > You can locate the newsgroup here:
| > | > | >
http://www.microsoft.com/communities/newsgroups/en-us/default.aspx
| > | > | >
| > | > | > When opening a new thread via the web interface, we recommend
you
| > | > check
| > | > | > the
| > | > | > "Notify me of replies" box to receive e-mail notifications when
| > there
| > | > are
| > | > | > any updates in your thread. When responding to posts via your
| > | > newsreader,
| > | > | > please "Reply to Group" so that others may learn and benefit
from
| > your
| > | > | > issue.
| > | > | >
| > | > | > Microsoft engineers can only focus on one issue per thread.
| > Although
| > | > we
| > | > | > provide other information for your reference, we recommend you
| > post
| > | > | > different incidents in different threads to keep the thread
clean.
| > In
| > | > | > doing
| > | > | > so, it will ensure your issues are resolved in a timely manner.
| > | > | >
| > | > | > For urgent issues, you may want to contact Microsoft CSS
directly.
| > | > Please
| > | > | > check http://support.microsoft.com for regional support phone
| > numbers.
| > | > | >
| > | > | > Any input or comments in this thread are highly appreciated.
| > | > | > =====================================================
| > | > | >
| > | > | > This posting is provided "AS IS" with no warranties, and
confers
| > no
| > | > | > rights.
| > | > | >
| > | > | > --------------------
| > | > | > | From: "SuperGumby [SBS MVP]" <not@xxxxxxxxxxx>
| > | > | > | References:
<FA164BBD-4DB2-452C-ADF2-9AE5BCEA6430@xxxxxxxxxxxxx>
| > | > | > <ebEUjegfIHA.2540@xxxxxxxxxxxxxxxxxxxx>
| > | > | > <33796A03-8F47-4D52-AC09-1046343B1ABA@xxxxxxxxxxxxx>
| > | > | > <ekU3lVsfIHA.3940@xxxxxxxxxxxxxxxxxxxx>
| > | > | > <26E842FE-6BEF-4E0F-BE4E-B60A50CB6D3A@xxxxxxxxxxxxx>
| > | > | > <vw0WxA0fIHA.6616@xxxxxxxxxxxxxxxxxxxxxx>
| > | > | > | Subject: Re: Dual NIC vs Single NIC
| > | > | > | Date: Thu, 6 Mar 2008 15:29:22 +1100
| > | > | > | Lines: 211
| > | > | > | X-Priority: 3
| > | > | > | X-MSMail-Priority: Normal
| > | > | > | X-Newsreader: Microsoft Outlook Express 6.00.3790.3959
| > | > | > | X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.3790.4133
| > | > | > | X-RFC2646: Format=Flowed; Original
| > | > | > | Message-ID: <#r7HpK0fIHA.4684@xxxxxxxxxxxxxxxxxxxx>
| > | > | > | Newsgroups: microsoft.public.windows.server.sbs
| > | > | > | NNTP-Posting-Host: cpe-121-217-134-196.nsw.bigpond.net.au
| > | > | > 121.217.134.196
| > | > | > | Path:
| > | > TK2MSFTNGHUB02.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTNGP06.phx.gbl
| > | > | > | Xref: TK2MSFTNGHUB02.phx.gbl
| > | > microsoft.public.windows.server.sbs:96665
| > | > | > | X-Tomcat-NG: microsoft.public.windows.server.sbs
| > | > | > |
| > | > | > | Terence, you're gonna make me hot under the collar.
| > | > | > |
| > | > | > | _ALL_ members of a Windows AD should use _only_ AD aware DNS
| > servers
| > | > for
| > | > | > | name resolution. Should Joe perform the action you describe
and
| > | > restart
| > | > | > his
| > | > | > | SBS any client machine which makes a name query while SBS'
DNS
| > is
| > | > | > | unavailable will switch to querying his AD-ignorant
router/ISP
| > for
| > | > name
| > | > | > | queries. The PC's will then experience problems requesting AD
| > | > resources
| > | > | > | until they switch back to using SBS DNS.
| > | > | > |
| > | > | > | Whoever suggested you should pass on this advice needs to
talk
| > to
| > MS
| > | > | > Active
| > | > | > | Directory development, then be shot.
| > | > | > |
| > | > | > | "Terence Liu [MSFT]" <v-terliu@xxxxxxxxxxxxxxxxxxxx> wrote in
| > | > message
| > | > | > | news:vw0WxA0fIHA.6616@xxxxxxxxxxxxxxxxxxxxxxxxx
| > | > | > | > Hello Joe,
| > | > | > | >
| > | > | > | > Thank you for posting here. Let's also thank others for the
| > input.
| > | > | > | >
| > | > | > | > According to your description, I understand that you want to
| > | > client
| > | > | > | > computers could access Internet when you shutdown or
restart
| > the
| > | > SBS
| > | > | > for
| > | > | > | > maintenance. If I have misunderstood the problem, please
don't
| > | > | > hesitate
| > | > | > to
| > | > | > | > let me know.
| > | > | > | >
| > | > | > | > Based on my research, this is a DNS and DHCP issue. By
default
| > the
| > | > SBS
| > | > | > is
| > | > | > | > the DNS server for all clients. After you shutdown the SBS,
| > the
| > | > client
| > | > | > | > computers unable to resolve the domain name of Internet. So
| > the
| > | > | > Internet
| > | > | > | > access fail.
| > | > | > | >
| > | > | > | > For this, we can make the DHCP on SBS to assign second DNS
| > server
| > | > to
| > | > | > all
| > | > | > | > client computers. When the primary DNS (SBS) is not
available,
| > the
| > | > | > clients
| > | > | > | > will try the alternate DNS server.
| > | > | > | >
| > | > | > | > 1. Run command "dhcpmgmt.msc" on SBS to open DHCP console
| > | > | > | > 2. Extend DHCP -> SBS.domain.local -> Scope -> Scope Options
| > | > | > | > 3. Double click "006 DNS Servers" in right pane
| > | > | > | > 4. Input the second DNS (your ISP DNS), click Add
| > | > | > | >
| > | > | > | > Note: Ensure the SBS IP is above your ISP IP in the list.
| > | > | > | >
| > | > | > | > 5. Click OK
| > | > | > | > 6. Restart the clients
| > | > | > | >
| > | > | > | > Note: If you rerun the CEICW, the above configuration will
be
| > | > reset
| > | > to
| > | > | > | > default value. Therefore, you need to perform the above
steps
| > | > again
| > | > | > after
| > | > | > | > your rerun the CEICW.
| > | > | > | >
| > | > | > | > Of course, this workaround does not work when the client
| > restarts
| > | > at
| > | > | > the
| > | > | > | > SBS shutdown time. The client gets IP address from SBS, if
the
| > SBS
| > | > | > | > shutdown, the client unable to detect the DHCP server, and
| > unable
| > | > to
| > | > | > get
| > | > | > | > IP. The whole network of client will be unavailable.
| > | > | > | >
| > | > | > | > To workaround this scenario, you only have to disable DHCP
on
| > SBS
| > | > and
| > | > | > make
| > | > | > | > your router work as DHCP server. However, this is not
| > recommended.
| > | > If
| > | > | > you
| > | > | > | > like, you can try it yourself.
| > | > | > | >
| > | > | > | > I hope these steps will give you some help.
| > | > | > | >
| > | > | > | > Thanks and have a nice day!
| > | > | > | >
| > | > | > | > Best regards,
| > | > | > | >
| > | > | > | > Terence Liu(MSFT)
| > | > | > | >
| > | > | > | > Microsoft CSS Online Newsgroup Support
| > | > | > | >
| > | > | > | > Get Secure! - www.microsoft.com/security
| > | > | > | >
| > | > | > | > =====================================================
| > | > | > | > This newsgroup only focuses on SBS technical issues. If you
| > have
| > | > | > issues
| > | > | > | > regarding other Microsoft products, you'd better post in the
| > | > | > corresponding
| > | > | > | > newsgroups so that they can be resolved in an efficient and
| > timely
| > | > | > manner.
| > | > | > | > You can locate the newsgroup here:
| > | > | > | >
| > http://www.microsoft.com/communities/newsgroups/en-us/default.aspx
| > | > | > | >
| > | > | > | > When opening a new thread via the web interface, we
recommend
| > you
| > | > | > check
| > | > | > | > the
| > | > | > | > "Notify me of replies" box to receive e-mail notifications
| > when
| > | > there
| > | > | > are
| > | > | > | > any updates in your thread. When responding to posts via
your
| > | > | > newsreader,
| > | > | > | > please "Reply to Group" so that others may learn and benefit
| > from
| > | > your
| > | > | > | > issue.
| > | > | > | >
| > | > | > | > Microsoft engineers can only focus on one issue per thread.
| > | > Although
| > | > | > we
| > | > | > | > provide other information for your reference, we recommend
you
| > | > post
| > | > | > | > different incidents in different threads to keep the thread
| > clean.
| > | > In
| > | > | > | > doing
| > | > | > | > so, it will ensure your issues are resolved in a timely
| > manner.
| > | > | > | >
| > | > | > | > For urgent issues, you may want to contact Microsoft CSS
| > directly.
| > | > | > Please
| > | > | > | > check http://support.microsoft.com for regional support
phone
| > | > numbers.
| > | > | > | >
| > | > | > | > Any input or comments in this thread are highly appreciated.
| > | > | > | > =====================================================
| > | > | > | >
| > | > | > | > This posting is provided "AS IS" with no warranties, and
| > confers
| > | > no
| > | > | > | > rights.
| > | > | > | >
| > | > | > | > --------------------
| > | > | > | > | Thread-Topic: Dual NIC vs Single NIC
| > | > | > | > | thread-index: Ach+7Ycor51Gr0zTRzilimYCEQJBpQ==
| > | > | > | > | X-WBNR-Posting-Host: 207.46.19.168
| > | > | > | > | From: =?Utf-8?B?Sm9l?= <Joe@xxxxxxxxxxxxxxxxxxxxxxxxx>
| > | > | > | > | References:
| > | > <FA164BBD-4DB2-452C-ADF2-9AE5BCEA6430@xxxxxxxxxxxxx>
| > | > | > | > <ebEUjegfIHA.2540@xxxxxxxxxxxxxxxxxxxx>
| > | > | > | > <33796A03-8F47-4D52-AC09-1046343B1ABA@xxxxxxxxxxxxx>
| > | > | > | > <ekU3lVsfIHA.3940@xxxxxxxxxxxxxxxxxxxx>
| > | > | > | > | Subject: Re: Dual NIC vs Single NIC
| > | > | > | > | Date: Wed, 5 Mar 2008 10:20:01 -0800
| > | > | > | > | Lines: 73
| > | > | > | > | Message-ID:
| > <26E842FE-6BEF-4E0F-BE4E-B60A50CB6D3A@xxxxxxxxxxxxx>
| > | > | > | > | MIME-Version: 1.0
| > | > | > | > | Content-Type: text/plain;
| > | > | > | > | charset="Utf-8"
| > | > | > | > | Content-Transfer-Encoding: 7bit
| > | > | > | > | X-Newsreader: Microsoft CDO for Windows 2000
| > | > | > | > | Content-Class: urn:content-classes:message
| > | > | > | > | Importance: normal
| > | > | > | > | Priority: normal
| > | > | > | > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.2992
| > | > | > | > | Newsgroups: microsoft.public.windows.server.sbs
| > | > | > | > | Path: TK2MSFTNGHUB02.phx.gbl
| > | > | > | > | Xref: TK2MSFTNGHUB02.phx.gbl
| > | > | > microsoft.public.windows.server.sbs:96557
| > | > | > | > | NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148
| > | > | > | > | X-Tomcat-NG: microsoft.public.windows.server.sbs
| > | > | > | > |
| > | > | > | > | Lanwench, thanks again for your input. I attempt to do as
| > little
| > | > | > | > maintainence
| > | > | > | > | as possible during the work hours of course. However 2 of
my
| > | > clients
| > | > | > are
| > | > | > | > | large churches and they have extended hours 7 days a wekk
| > plus
| > | > some
| > | > | > of
| > | > | > | > the
| > | > | > | > | programs they run require maintance by the software
support
| > | > personel
| > | > | > | > during
| > | > | > | > | the 8-5 time frame.
| > | > | > | > |
| > | > | > | > | When I don't use ISA I typically intall a Sonicwall as my
| > | > gateway
| > | > | > and
| > | > | > | > more
| > | > | > | > | recently a newer firewall by Calyptix Security (it also
has
| > an
| > | > | > internal
| > | > | > | > hard
| > | > | > | > | drive and will hold mail when the server is offline)
| > | > | > | > |
| > | > | > | > | Joe
| > | > | > | > |
| > | > | > | > | "Lanwench [MVP - Exchange]" wrote:
| > | > | > | > |
| > | > | > | > | > Joe <Joe@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
| > | > | > | > | > > Lanwrench that is one the problem with the dual nic
| > setup,
| > | > The
| > | > | > users
| > | > | > | > | > > get to the internet thru the SBS box. If it is down,
| > while
| > | > they
| > | > | > can
| > | > | > | > | > > log on to their own box they have no access to the
| > outside
| > | > | > world.
| > | > | > I
| > | > | > | > | > > am looking for a way to make my systems a little more
| > | > | > "bulletproof"
| > | > | > | > | > > and at the same time allow me to do some server
| > maintainance
| > | > | > without
| > | > | > | > | > > totally shutting down the office.
| > | > | > | > | >
| > | > | > | > | > Well, I don't think you should be doing server
maintenance
| > | > during
| > | > | > the
| > | > | > | > | > business day, myself - but your server shouldn't be the
| > | > gateway
| > | > if
| > | > | > you
| > | > | > | > don't
| > | > | > | > | > have ISA. Set all clients to point at your router's LAN
IP
| > as
| > | > | > default
| > | > | > | > | > gateway.
| > | > | > | > | > >
| > | > | > | > | > > "Lanwench [MVP - Exchange]" wrote:
| > | > | > | > | > >
| > | > | > | > | > >> Joe <Joe@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
| > | > | > | > | > >>> In the past Most of my systems have been dual NIC
| > usually
| > | > with
| > | > | > ISA
| > | > | > | > | > >>> but due to many reasons I am now considering going
to
| > a
| > | > single
| > | > | > NIC
| > | > | > | > | > >>> and moving away from ISA.
| > | > | > | > | > >>>
| > | > | > | > | > >>> Currently with my existing setup, if the SBS server
is
| > | > down,
| > | > | > for
| > | > | > | > | > >>> what ever reason, my customers can't even get to the
| > | > internet.
| > | > | > | > | > >>
| > | > | > | > | > >> Yes they can.....they just can't resolve names :)
| > | > | > | > | > >>>
| > | > | > | > | > >>> If I had a second member server set up as the backup
| > DC, a
| > | > | > single
| > | > | > | > | > >>> NIC SBS server, and a hardware firewall wouldn't
that
| > | > allow
| > | > my
| > | > | > | > | > >>> customer to log on and access the internet if the
SBS
| > | > server
| > | > | > was
| > | > | > | > | > >>> offline temporarly? I would still want the SBS
server
| > to
| > | > run
| > | > | > the
| > | > | > | > | > >>> DHCP and DNS roles but would assume that would not
| > matter
| > | > as
| > | > | > long
| > | > | > | > | > >>> as the SBS machine was not down for more than a few
| > hours
| > | > at a
| > | > | > | > time.
| > | > | > | > | > >>
| > | > | > | > | > >> Yes. If you have another DC running AD-integrated
DNS,
| > and
| > | > your
| > | > | > | > | > >> client workstations have the secondary DNS server
| > listed,
| > | > they
| > | > | > | > | > >> should work.
| > | > | > | > | > >>>
| > | > | > | > | > >>> The above seems logical to me, but then since I
have
| > not
| > | > done
| > | > | > it I
| > | > | > | > | > >>> am checking for any "gotchas" lying around that I
| > might
| > | > not
| > | > be
| > | > | > | > | > >>> aware of.
| > | > | > | > | > >>>
| > | > | > | > | > >>> By the way I would be running SBS2003R2 on such an
| > install
| > | > | > that
| > | > | > | > | > >>> would assist me in the licencing issue of the second
| > | > server
| > | > | > which
| > | > | > | > | > >>> would be running server 2000 or 2003 as a member of
| > the
| > | > SBS
| > | > | > box.
| > | > | > | > | > >>
| > | > | > | > | > >> You'd need to buy Windows 2000 or 2003 but I believe
| > you
| > | > | > wouldn't
| > | > | > | > | > >> need additional CALs.
| > | > | > | > | > >>
| > | > | > | > | > >> That all being said, if you're having regular
problems
| > with
| > | > | > your
| > | > | > | > SBS
| > | > | > | > | > >> box going down, I'd rather address those - add as
much
| > | > | > redundancy
| > | > | > | > to
| > | > | > | > | > >> the server hardware as you can. That would be a
better
| > use
| > | > of
| > | > | > | > money,
| > | > | > | > | > >> in my opinion, although it's true that outside of
SBS,
| > it's
| > | > | > always
| > | > | > | > | > >> recommended to have more than one DC.
| > | > | > | > | > >>
| > | > | > | > | > >>>
| > | > | > | > | > >>> Joe
| > | > | > | > | >
| > | > | > | > | >
| > | > | > | > | >
| > | > | > | > | >
| > | > | > | > |
| > | > | > | >
| > | > | > |
| > | > | > |
| > | > | > |
| > | > | >
| > | > |
| > | > |
| > | > |
| > | >
| > |
| > |
| > |
| >
|
|
|

.

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