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Odd Win98 DNS problem(?)

By kslate ·
We've now seen this several times and would like to know the answer....

Background:
-Students with Win98.
-Getting a correct IP via DHCP.
-Students can't telnet.
-Students can ping (but incomplete - see below)

We've had several (about 5) students who are getting the correct IP via DHCP but have a rather strange problem. When they try to telnet to any system they get a "Can't find host" error. When you try to ping you get really strange results.

-You can ping an IP and get a reply.-You can ping a system and get a reply (short name - i.e. server).
-You Can NOT ping the fully qualified host name. (i.e. server.domain.edu)

The first system we saw with this was a Win98 notebook that had "IP Routing Enabled" (checked when you ran winipcfg.exe). It only had one nic card. My first thoughts were that this was it's problem but after I turned this off it still did not solve the problem. The only thing we've found so far to solve this is to re-install windows... not a great solution but it does work.

We've tried all the usual. Removing everything from the Network control panel and re-install. Removing TCP/IP and re-install. We even replaced the Ethernet card with a new one (different brand) and it still did the same thing.

It's a strange one.... Anyone have any ideas?

Thanks in advance....

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Odd Win98 DNS problem(?)

by rogerndgreen In reply to Odd Win98 DNS problem(?)

First off, can you telnet using an IP address and/or short system name?
It sounds as if you have got the system confused between any DNS or WINS servers or host files, especially as a complete reinstallation works.Look especially at the option of "Use DHCP for WINS resolution".
I would compare these settings on a working & non-working PC, and also search for the existence (and all entries) in HOSTS & LMHOSTS files that may exist.

HTH

Roger Green

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Odd Win98 DNS problem(?)

by rogerndgreen In reply to Odd Win98 DNS problem(?)

Like you say, it is strange. It could be a commuincation problem elsewhere on the network (e.g. packet filters)but it can't be if a reinstall works.
Likewise checking all the network properties would be useful, just in case the DHCP has been overwritten, but you say you've done that as well.
It's not much help, but as a suggestion, if a reinstall usually works, try Ghost to create an image, because that just might make the rebuilds quicker.
Sorry :-(
Roger

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Odd Win98 DNS problem(?)

by kslate In reply to Odd Win98 DNS problem(?)

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Odd Win98 DNS problem(?)

by lcd4 In reply to Odd Win98 DNS problem(?)

Two things to check:

1) Check the host file
2) Check for any manual configured dns settings

Either of these settings will override dhcp information. Reinstallation would also clear out both settings. Good Luck :)

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Odd Win98 DNS problem(?)

by kslate In reply to Odd Win98 DNS problem(?)

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Odd Win98 DNS problem(?)

by kslate In reply to Odd Win98 DNS problem(?)

Checked hosts and lmhosts... didn't help. Nothing in them outside the default settings. Even tried to rename/move them.

What I should have added to the telnet info, is that you can't telnet anywhere. You can't telnet to either the name, full nameor IP.

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Odd Win98 DNS problem(?)

by bww5195 In reply to Odd Win98 DNS problem(?)

We had a similar problem in one of the departments we support. What fixed the problem was verifying the correct spelling of our domain in the properties of tcp/ip under the dns tab and that the host name on the same tab was unique on the network.
Other than that, I agree with the other technician that your hosts.* file may be messed up. Try renaming the hosts file and replacing it with the copy of hosts.sam located in the C:\WINDOWS directory.

Good luck.

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Odd Win98 DNS problem(?)

by kslate In reply to Odd Win98 DNS problem(?)

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Odd Win98 DNS problem(?)

by bww5195 In reply to Odd Win98 DNS problem(?)

We had a similar problem in one of the departments we support. What fixed the problem was verifying the correct spelling of our domain in the properties of tcp/ip under the dns tab and that the host name on the same tab was unique on the network.
Other than that, I agree with the other technician that your hosts.* file may be messed up. Try renaming the hosts file and replacing it with the copy of hosts.sam located in the C:\WINDOWS directory.

Good luck.

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Odd Win98 DNS problem(?)

by kslate In reply to Odd Win98 DNS problem(?)

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