Mutlihomed NT server problems.

[TVC15]

I have 3 computers on my home network.

Cartman is an NT4 Server and Beavis and Buthead are Windows 98 workstations. I recently decided to do a bit of an experiment so I installed 2 network cards into Cartman. One is attatched via a crossover cable to Beavis and the other to Buthead.

Now, while Cartman can see both Beavis and Buthead and both Beavis and Buthead can see Cartman, Beavis can't see Buthead (or vice versa). Are you still with me?

My knowledge of TCP/IP is limited so I think it may be to do with how I have set up the IP adresses. They are as follows.

Beavis: 10.0.0.1
Cartman (Beavis nic): 10.0.0.2
Cartman (Buthead nic): 10.0.0.3
Buthead: 10.0.0.4

I have kept all the subnets at 255.255.255.0

(Before you start shouting at me, somebody did suggest that this setup might work so its not just something I have made up)

So, what I need to do is configure Cartman so that Beavis and Buthead can somehow see each other.

I have a feeling this may have to involve static or dynamic routing tables. Or is there an easier option?

It's over to you!



------------------
Up every evening 'bout half eight or nine,

I give my complete attention to a very good friend of mine.

[Ghost_Hacker]

Let me see if I can help you before I leave the office.


First thing to do is create 2 subnets like this:

Beavis: 10.0.0.1
Cartman (Beavis nic): 10.0.0.2
Cartman (Buthead nic): 10.0.1.1
Buthead: 10.0.1.2

Your subnet mask will still be the same. Now be sure that you install TCP/IP on all your computers.


OK so far so good. Now right click network 'hood and choose properties at the NT server. Go to the "routing" tab and choose "enable IP forwarding" for both of your NICS. Also on the "wins" tab choose "enable LM host lookup"


That's it. The server should build routes for the networks it's connected to.

Use ping to test the configuration. ( ping 10.0.0.1 from Buthead)

Once you got that going I'll tell you how to edit the LM host file. ( goto go now) Or you can do a search of the file on your hard drive and add the lines you need for buthead and beavis.


Good Luck http://www.PCGuide.com/ubb/smile.gif

------------------
"It's just a whisper in my Ghost"

[bassman]

How bout a hub with all three connecting thru it. Not sure what the need for two NICs in Cartman, but if total communication is your goal then that would be the best advice I could give.

------------------
If at first you don't succeed, destroy all evidence that you tried

[Ghost_Hacker]

OK where was I? ..... oh yeah..there may not be an LMhost file on a Windows 98 computer so check first. If there is you'll want to edit the LMhost file at each workstation. For beavis add this line:

buthead 10.0.1.2

For buthead add this line:

beavis 10.0.0.1

Remember to "enable LM host lookup" at each workstation. (again if this option is on a Windows 98 computer).


If worst comes to worst and you must have a multihomed server you can install the "wins" software. Post back if you want to set that up. (it's easy) But first make sure your computers past the "ping" test.

And one other thing the "default gateway" for each of the 98 computers should match the server's IPaddress for that subnet.

Good luck http://www.PCGuide.com/ubb/smile.gif

------------------
"It's just a whisper in my Ghost"



[This message has been edited by Ghost_Hacker (edited 03-12-2001).]

[TVC15]

Thanks for your input. While the IP addresses you gave me were correct, they did not work initially and it was only when I started messing about with gateways on the Windows 98 machines that I eventually managed to get them to ping each other.

The Win98 machines still do not show up in each others Network Neighbourhood and a "find computer" search yields nothing. To be quite honest, however, this is not too important. The whole reason for setting up this home network was to recreate a real world network that I am going to have to work on in the near future. For reasons too numerous to go into, this network has a multihomed server with 2 segments that can't communicate with each other. At present, this is not a problem as the PC's only share resources on the server but recently the company has been talking about installing a mail server which all PC's will have to access. As long as the PC's can communicate via IP, then this should be posssible.

------------------
Up every evening 'bout half eight or nine,

I give my complete attention to a very good friend of mine.

[Ghost_Hacker]

Glad it worked for you! Here's some information that may help you with your other problem.

The reason your computers can't see each other is because Net 'hood use netbios to create the computer names you see.(in fact a computer's name is called it's netbios name)


The first thing I would do is install netbeui on all machines then wait 30 mins to see if the "browse list" (the 'hood) updates itself.

If after a day it has not .The easiest solution would then be to install "wins" on the server box and setup the workstations to query a wins server (the NT server) for name resolution.

The wins server will update it's wins database with the IPaddresses and names of all computers it can see on both subnets. Then the master browser ,which should be the NT server, will "publish" the names you see in the 'hood to all computers it's connected to. (IE: it will send it's browse list to all computers which request one.)

On a simply network with one server this is pretty much how it should work.

Hope this helps http://www.PCGuide.com/ubb/smile.gif

------------------
"It's just a whisper in my Ghost"