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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

And other random info. Yes Properties for "Client for MS Networks" has "Log onto Domain" Checked and domain is spelled correctly. - TCP/IP properties between systems that work and don't work are the same. - File and Print sharing is not installed (On any win98 clients) - And Client for MS networks is set as Primary network logon. - Network topology

1 - Switch (3com 3300)
3 - 10/100 3com Hubs
2 - Subnets (All Clients and DC's on 1 net - Member server on other net)

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DHCP & Domains

by The Professor In reply to DHCP & Domains

First, I would check the DHCP server to see that there are enought addresses available in the scope. Second, remove and reinstall all networking components. Third, if you are using a Ghost image, the networking components could be corrupted or need to be updated. Try another image and see if the same problem exists, if maybe you need a software patch from Microsoft.

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DHCP & Domains

by Earthworm In reply to DHCP & Domains

42% Available addresses in Scope.
I figure a new install of Windows from a different CD would qualify for your second and third points. Thanks though.

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DHCP & Domains

by stgc95 In reply to DHCP & Domains

I ran into similar problems with roving users that could get a lease at some sites and not others. Turned out to be some bad IPs in the router table at the sites where the lease could be gotten. The table was fixed by the network guru's remotely.

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DHCP & Domains

by Earthworm In reply to DHCP & Domains

No routers, and no bad IP addresses listed in DHCP Manager. Sorry.

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DHCP & Domains

by colang In reply to DHCP & Domains

Try to check the dhcp scope.
If you change or move machines frequently or
buyed a lot of new machines substituting older,the ip addresses aren't released until leasing expired, so using dhcp will not work, but there is no problem (no duplicated ip) using manual configuration.
Try to manually delete active leasings from dhcp and restart pc.
If you changed recently ip address or subnet on one of DC try to check wins tables searching for wrong ip addresses, first tombstone and then delete them.
Check if lmhosts file are in use with right or wrong informations.
Are nt service packs installed on dhcp server?
Who is the master browser on that subnet?
Try modify PDC registry to force it to be master browser.
In win 98 network properties the "workgroup" name is the same of nt domain name? (no sense in this but sometime it cause troubles).
All the necessary informations (default gateway, wins addresses, wins node type, ecc) are correctly configured in dhcp scope or having all the machines in the same phisical lan they are finding each others by broadcast?
Hope it can help. Good luck.

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DHCP & Domains

by Earthworm In reply to DHCP & Domains

More than enough addresses, 42% to be exact. Have been running same subnet and scope for more than 10 months now. No LMHOSTs on Win98se Clients. SP6a Installed on all three servers. PDC is master Browser. Yes Workgroup name is same as Domain name (Tried it other way too, no change)

Yes, DHCP info is all there. The systems Network works perfectly except it does not ask for domain name on initial boot up. Thanks anyway. All good sugestions, but I tried them all before offering 3100 points.

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DHCP & Domains

by adeshpcs In reply to DHCP & Domains

Check to make sure that you have sufficient IP addresses for all of your clients. Reserve IP addresses only for your servers. Since you have a small network what you can do is to decrease the lease time for the IP addresses.

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DHCP & Domains

by Earthworm In reply to DHCP & Domains

addresses .1 thru .100 are excluded (Servers/Printers/Systems with Defunct DHCP, Stuff like that.) .101 thru .255 are used in scope and 42% of them are free. Thanks anyway.

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DHCP & Domains

by ffrr In reply to DHCP & Domains

This might be a long shot but, you could check the following Technet document : Q141858

This relates to a registry key that can cause similar problems to your description above..

Hope this helps..

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