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DHCP & Domains

By Earthworm ·
Here is a tough one.

I run a network of 3 Servers (1 PDC, 1 BDC, 1 Member Server), and Approx. 50 Clients.
DHCP and WINS from PDC only. Clients are all Win98se or NT. A few 98 systems (4 to be exact) cannot use DHCP correctly. I want to know why.

Here is the info:

1 system a few months ago with DHCP enabled Would not Find the Domain. (The No domain available error) I found that the unit could not contact the DHCP server for some reason so I specified an IP in the subnet and all was A OK. So I ignored the problem.

Then a few months later a system I had just formatted and installed win98se onto had a similar but slightly different problem. This unit could see the DHCP server and get an IP address But the Login Screen wouldnot show a domain name. Thus logging in would login to windows but not the domain. So I specified an IP address and What do you know, everything showed up the next reboot. I was able to log into the domain, so again I ginored the issue and left that system outside the DHCP Server.

Now I have 2 new systems with the same problem as the last, but I have a little more Info just to confuse the situation.

1. If I log into windows (Without the domain name) and run winipcfg and release my IP address and then Renew it, A network login box apears with the domain listed.

2. I have tried 3 Different NIC's (a 3com, an Intel, and some noname NIC) All three same result.

3. The Computer actually registers itself with the WINS server, soPing works by IP or Name.

4. If I release the IP and reboot, the Network login box apears with Domain name, but after another reboot switches back to the Windows Login with no Domain.

5. Winipcfg looks identicle between systems that work andsystems that don't.

So what do you think? Any Help will be appreciated.

Eathworm

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DHCP & Domains

by Earthworm In reply to DHCP & Domains

Nope No Novell, No IPX. Access Rights should have no effect on Domain Login, but I tried it anyway, with no effect. PW Caching has already been disabled. Thanks anyway.

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DHCP & Domains

by Jay Allen In reply to DHCP & Domains

Here is my shot.
Why are you using both DHCP and WINS services? I would just stop using WINS altogether and just go with DNS - it really works better. Also, the problem lies with your connectivity. Check first to see what speed you are connecting with and your actual speed on the cable. Next make sure you are using CAT V cable. CAT IV does work only when it wants to (I tried). Next check the switch and hubs to see if they are cascaded; there could be a time out issue here too. But who knows...This should get you started, Good Luck!

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DHCP & Domains

by Earthworm In reply to DHCP & Domains

WINS was what was in use when I got here, so I have jsut left it. But these systems register themselves with the wins server on bootup, even though they don't log into the domain, so I don't think it is a WINS issue.

Yes all cables are Cat5 Certified, so I don't think that is an issue, plus this happens no matter what cable or wall jack they are plugged into. As far as the timeout issue, these systems do this even if they are plugged into the switch that the server comes off of, soI doubt the hubs are causing it either. Thanks for the suggestions though.

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DHCP & Domains

by shmaltz In reply to DHCP & Domains

Check the cables make sure its cat5 if YOU crmiped them then make sure you did 568A or 568B.
Next make sure that on the indentification tab in the network control panel you entered as the workgorup name the name of your domain.

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DHCP & Domains

by Earthworm In reply to DHCP & Domains

All Cables have been Pre-made, and the Wall Jacks have all been certified Cat5 Complient. Plus as I have said, the Network works perfectly with a hard coded IP address. Thus Hardware does not appear to be the issue. Thanks anyway.

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DHCP & Domains

by Deming Schools Network In reply to DHCP & Domains

Earthworm... I know you are probably going crazy with this one.. it looks like you have covered all the bases, but I was wondering if you have rebooted your PDC during any of this? I had similar "weird" DHCP problems that were solved with a reboot of the DHCP server. It was kinda like the server forgot what it was supposed to do, and the reboot put everything back in place. Good Luck!

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DHCP & Domains

by Earthworm In reply to DHCP & Domains

This is a very good one. And no I hadn't thought of it, but Yesterday I had to reboot the PDC because it was denying logins 75% of the time for no apparent reason. Once rebooted that problem went away, but today I am still having the DHCP Problems. I have also re-applied the Service pack during these problems. Thanks for the suggestion though.

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DHCP & Domains

by jmason In reply to DHCP & Domains

Just an FYI; I work on a new Sony Vaio yesturday that was running Windows 98se and was using a wireless nic and DHCP and that was also logging into our NT domain. That laptop did not give me the option to change the domain during the logon process. In fact it would even default back to the user being "Valued Sony Customer". But if we put in a correct user name that had domain privileges and there correct NT password it logged us onto the domain with all the required access.

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DHCP & Domains

by Earthworm In reply to DHCP & Domains

This is also a good suggestion, and you are correct if we log into these systems, even though I am not logging into the domain, I do get full domain privileges. The problem is they don't run the Logon scripts needed to map the drives, and update programs. Thanks anyway though.

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DHCP & Domains

by Earthworm In reply to DHCP & Domains

Thanks for all the great recomendations, sorry I have had to reject them all so far, but please continue, I try every suggestion before rejecting. Apparently your just really going to have to work for these points. Thanks again for the responses.

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