Question

Question about DNS Entry

Asked by: mxgong

Hi All experts.

We have two domains: abc.com and abc.com.au

DC1.abc.com is DC of abc.com holding FSMO role and It is also a primary DNS server for domains abc.com and abc.com.au

eg: windows XP sp3,  DHCP enabled. IP address: 192.168.10.5, hostname: client, domain: abc.com

DHCP Server: expire date is 5 days.

In the DNS server --> zone: abc.com, there is an Host(A) dns entry for client  192.168.10.5

However, I would like to move this entry from zong abc.com into zone: abc.com.au.

I deleted Host(A) Client  192.168.10.5 in the zone: abc.com, and I add a new Host (A) Client 192.168.10.5 in the zone: abc.com.au

Now the DNS nslookup for this mahine is client.abc.com.au. this is what I want.

My Questions are:

** does Host (A) DNS Entry will be expired? what's the default time of expiration? how to change it?
** If this machine shutdown for two weeks, the IP assigned by DHCP will be expired and released. When the machine will be back to online, if it is assigned by different IP address by DHCP, Does Host (A) dns entry of this machine still in the zone abc.com.au? or It will be stored into zone: abc.com with new IP address?


Thanks in advanced.

Regards

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Asked On
2009-11-03 at 20:08:22ID24869743
Topic

Windows 2003 Server

Participating Experts
4
Points
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Comments
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Answers

 

by: leakim971Posted on 2009-11-03 at 20:52:13ID: 25736491

Hello mxgong,

When you will restart the client machine it (or DHCP service) will register its address to the DNS of its domain. Assuming the domain for this machine stay abc.com you will see a new Host (A) created in this zone.
If the computer is not in the domain, have you configured your DHCP to specify the domain to client ? If yes you may change the default domain to use.
Look information option section, at DNS Server (6) : http://support.microsoft.com/?scid=kb;en-us;121005&x=15&y=14

To force the registration and see what happen, open command prompt and type :
ipconfig /renew
ipconfig /registerdns

A good link : http://support.microsoft.com/kb/223413

Regards.

 

by: debuggerauPosted on 2009-11-03 at 20:54:25ID: 25736504

the DNS Entry will expire according to your TTL (time to live) setting.
If you have dynamic updates enabled, it will expire the old one when a new one get generated.

The machine will register itself into whatever zone you have configured within the client, if it is not specified, the default domain suffix applies.

 

by: mxgongPosted on 2009-11-03 at 20:58:34ID: 25736523

Thanks both of you for quick response.

To Leakim: you mean the Host(a) I manually added into zone abc.com.au will be lost after the machine rebootIn the DNS options, I have configured dns name: abc.com.au

To Debuggerau, Could you please tell me how to register itself into right zone? in abc.com, not in abc.com.au

Thanks

Regards

 

by: debuggerauPosted on 2009-11-03 at 21:19:47ID: 25736622

on the client, open your network connections and open the active one.
within the Internet protocols(TCP/IP), select Advanced, DNS tab, there is a field called 'DNS suffix for this connection'.
Place abc.com.au in here..

However, since you are settings all the options within your DHCP server, you may want another scope to define that additional domain.

The DNS setting is within your scope options and is the '015 DNS Domain Name' Entry..

 

by: wolfcamelPosted on 2009-11-04 at 00:08:35ID: 25737287

if you wanted you could reserve the Ip address in dhcp by mac address to make sure the machine always gt the same IP

 

by: debuggerauPosted on 2009-11-04 at 14:08:49ID: 25744533

Yes, but for a server, Microsoft suggest to always allocate static addressing..

 

by: mxgongPosted on 2009-11-04 at 18:11:42ID: 25746185

Hi All

I do add abc.com.au into 015 DNS Domain Name entry.

For Client, I run ipconfig /renew, and ipconfig /all, I can see the Connection-Specific DNS Suffix is abc.com.au.

However, In the DNS Server, the host(a) entry is not in the zone: abc.com.au, it is in the zone: abc.com


Any idea?

Thanks

 

by: leakim971Posted on 2009-11-04 at 18:40:52ID: 25746305

The computer have joined the abc.com domain ?

 

by: mxgongPosted on 2009-11-04 at 18:47:34ID: 25746330

As mentioned in the first post, It is joined into abc.com domain.

 

by: debuggerauPosted on 2009-11-04 at 19:49:10ID: 25746606

Windows will need to register it into the abc.com domain for active directory services.

Do you have another domain in the org for abc.com.au, or are you trying to create another zone for lookup purposes?

 

by: AwinishPosted on 2009-11-06 at 16:11:54ID: 25764232

Simply delete the host record of the machine in dns server & create in other domain.

Run ipconfig /flushdns & ipconfig /registerdns

 

by: mxgongPosted on 2009-11-18 at 20:09:15ID: 31655951

This question has been answered.

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