Dynamic DNS Dilemma

[grandpubah]

I realize this is a broad question so bear with me. I can't seem to get clients in my domain to correctly update DNS. I assume when a client boots and gets its dhcp info that it should then register it's hostname and IP with DNS? This is a W2k advanced server and a mix of 98/XP Pro/2000 Pro clients. I also have dhcp set to register legacy clients. Unfortunately none of this seems to be happening. I've looked in the event logs and I don't see anything to indicate a problem. In fact, everything seems to be working. My only indication of a problem is that when I go into dns and look at the list of clients none of the dynamic clients are listed.

Any advice or pointers would be appreciated.

Jon

 

[redwolf52]

Have you added the address of the DNS server to the TCP\IP properties sheet of the workstations?

 

[grandpubah]

Yes, I have tried adding it manually and via dhcp both. DNS lookups work but not DNS updates.

Jon

 

[GlenJohnson]

try ipconfig /all at a client and see what it tells you. Glen A. Johnson
Microsoft Certified Professional
gjohn76351@msn.com
"An investment in knowledge pays the best interest."
Benjamin Franklin (1706 - 1790), US statesman, diplomat, inventor.

 

[grandpubah]

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

Z:\>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : pennsvil-jhall
Primary Dns Suffix . . . . . . . : pennsville.pennsville.k12.nj.us
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : pennsville.pennsville.k12.nj.us
pennsville.k12.nj.us
k12.nj.us
nj.us

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel 21140-Based PCI Fast Ethernet
Adapter (Generic)
Physical Address. . . . . . . . . : 00-40-05-A2-D8-96
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 172.16.10.5
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . : 172.16.1.1
DHCP Server . . . . . . . . . . . : 172.16.1.6
DNS Servers . . . . . . . . . . . : 172.16.1.6
Lease Obtained. . . . . . . . . . : Tuesday, May 21, 2002 11:14:24 AM
Lease Expires . . . . . . . . . . : Wednesday, May 22, 2002 11:14:24 AM

Z:\>

 

[GlenJohnson]

Can the machines that aren't listed browse the internet? Maybe it's just a setting in DNS not to show certain computers. Glen A. Johnson
Microsoft Certified Professional
gjohn76351@msn.com
"An investment in knowledge pays the best interest."
Benjamin Franklin (1706 - 1790), US statesman, diplomat, inventor.

 

[grandpubah]

Yes, they can browse the Internet. Fact is their are about 600 clients and none register their address. I suspect it is a server issue. I have looked at everything I can think of to no avail.

Jon

 

[Guest_imported]

at TCP/IP level (client side), verify that you enabled the registration of your addresse in your DNS server. (see ADVANCED button then DNS)

verify that you enabled dynamic registration. (server side)

Expand the Forward Lookup Zones folder.
Right-click the folder, and then click Properties .
In the Allow Dynamic Updates box, click Yes .
Click OK .


Restart your DNS,
> net stop DNS
> net start DNS

samir.amri@edunet.tn

 

[grandpubah]

Client and server side are enabled.

 

[zoeythecat]

(1) How are your DHCP Options set in your DHCP Server?
You need these 2 options defined in DHCP so that your
clients will know where to register in DNS
* Option 006
* Option 015
(2) With the above options setup in your DHCP server, on
you client workstations you need to make sure that
they will be getting their IP Addresses from the DHCP
Server.

Providing you have all other options (I.E router, wins) setup in DHCP, when your client hits the DHCP server it will find the DNS IP Address from 006 and find the domain name from 015

Hope this helps.

 

[Guest_imported]

your W2K is working in Mixed mode of course.


renew your DNS client registration.
at command prompt.(client side)
type ipconfig /registerdns [adapter]

Where adapter is the name of a specific network adapter installed on the computer for which you want to renew or update registrations.
(/regitserdns is available for use at computers running Windows 2000 with the DHCP Client service started)
(server side)
At a command prompt, type:
nslookup
set type=NS
(type here your full domain Name).
what do you see?(excuse my poor english:=)

 

[Guest_imported]

I mean by your full domain name:dns_server_name.domain_name
.

but why did you specify a DNS Suffix Search List with 4 dns whereas you have only one DNS ?
i suggest that you CHOOSE :add specific principal DNS suffix to the connexion.
and check the box: add parent suffix of principal DNS

TRy and tell me what do u get?

 

[Guest_imported]

two of my freinds, tell me that what i suggest is wrong and it'll not work correctly.
I'll loose the bet if you don't respond and tell me what do u get following what i've suggest as solution.

 

[zoeythecat]

Sam,

I think if he has his DHCP Server options setup properly, he will not have to enter anything manually on the Client. Just as long as he has "Obtain an IP Address from a DHCP SErver (W98 clients)" and "Obtain an IP Address automatically (XP CLIENTS)" then when the client hits the DHCP Server it will also register to DNS via the 006 and 015 options in DHCP.

Will be interesting to see what the resolution is.

 

[Guest_imported]

zoeythecat;

grandpubah has just give us the result of IPCONFIG/ALL
and i can see his DHCP active, he has a DNS addresse too. Then; i think that he has configured correctly his DHCP.

But, i wonder if he has configured the DHCP server to perform updates on behalf of its DHCP clients.
This can be set at the applicable DHCP server by :
configuring the Update DNS only if DHCP client requests option located in Properties on the DNS tab.
or by configuring The DHCP server to always registers and updates client information with its configured DNS servers.

as he use W9X and W2K i think that the second choice is the best.

thank you.
samir

 

[GlenJohnson]

I'm still wondering, since they can browse the internet, if it's just a minor setting in DHCP that says show, or don't show. Everything else works, right? Glen A. Johnson
Microsoft Certified Professional
gjohn76351@msn.com
"An investment in knowledge pays the best interest."
Benjamin Franklin (1706 - 1790), US statesman, diplomat, inventor.

 

[Guest_imported]

yes, i agree that borwsing internet is working and is a proof that he has the right parameters to do it.


But, DHCP server should be able to update the DNS registration on behalf of W9X (W2K can do it alone and by default unless he desable it ).

the configration suggested by Mr.zoeythecat is important to deliver the right parameters, DNS(s), Wins, Router, IP, Subnet Mask atc... to client. I Think that he does it. (as shown in ipconfig/all).



then, browsing internet is a thing, and update registration in the dns is another thing. DHCP should be configured to UPDATE DNS. it's simple. just borws the properties of the DHCP server and at DNS level choose the right check box.

it's a good discussion.
thenks

 

[zoeythecat]

Samsam,

I agree with you that it could be something in DHCP. Your suggestions sound comparale to what I was thinking. When the client connects to the DHCP server if all settings are defined correctly in DHCP then it should register itself in DNS Server provided all his DNS Server settings are defined properly and I think this has already been confirmed.

Great discussion going on. Keep it up.

Zoe

 

[GlenJohnson]

I'm not running DHCP here, so I can't get into the details. Just shooting from the hip. Am running DNS and WINS, and found out a long time ago that WINS if very fussy, but DNS is the big guy in the whole scope of things. Think you gent's are right. Head straight for the DNS and check it out. One other thing I've found that causes problems. Doubt that it relates here but worth a look. Had an old hosts and lmhosts file on a client one time. Didn't stop his access to the servers or internet, just really slowed it down. Glen A. Johnson
Microsoft Certified Professional
gjohn76351@msn.com
"An investment in knowledge pays the best interest."
Benjamin Franklin (1706 - 1790), US statesman, diplomat, inventor.

 

[zoeythecat]

I think after he confirms exactly what his DNS Settings and DHCP Settings are than we can all figure out what the problem is. So far, we only have results displayed from a workstation via the IPCONFIG /ALL

We need Grandpubah to give us information on how his DHCP Server and DNS Settings are setup and also confirm how he has his clients configured via TCP/IP properties. Also if he can confirm what protocols he has setup on his clients. This is a difficult nut to crack and you leave yourself guessing. So the more information we have the better.

Good talking with all of you.

Zoe