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Is it possible to use two different TCP/IP configs

Posted on 2002-04-24
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Last Modified: 2013-11-09
Hopefully this is easy and possible.
I have direcpc for internet access on one machine. It uses TCP/IP with a gateway and DNS.

Is it possible to have the settings for the Direcpc TCP/IP use the gateway, etc and the ethernet network adapter use another. I think the settings from the Direcpc interfere with the other computers trying to access the server. In other words, do two adapters have to share the same TCP/IP settings...
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Question by:luxor
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14 Comments
 
LVL 8

Expert Comment

by:scraig84
ID: 6965832
Yes, it is certainly possible and even common to have multiple adapters in the same machine.  The two adapters should NOT share the same IP settings unless you are doing something such as NIC teaming or something like that where you are load balancing or adding fault tolerance or something.
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Author Comment

by:luxor
ID: 6965870
The problem is that when I put in a gateway or DNS setting for the Direcpc adapter and do a restart, I check the TCP/IP settings for the ethernet card and it has the same gateway and DNS settings. If I delete those settings for the Ethernet adapter, and restart, the Direcpc adapter is all screwed up, because the settings are gone there too.
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LVL 8

Expert Comment

by:scraig84
ID: 6965885
OK - maybe I'm missing something.  What exactly is a Direcpc adapter?  My assumption was that it was just an Ethernet adapter hooked up to a broadband service called Direcpc, but maybe I'm being a bit presumptuous.  Also, what OS are you using?
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Author Comment

by:luxor
ID: 6965902
No, you are correct. It is actually a USB adapter, although still considered a network adapter. I can set individual IP addresses, but it seems that gateway and DNS settings for some reason have to be universal. Even the dialup adapter ends up with the same settings.
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Author Comment

by:luxor
ID: 6965906
using Windows 98SE
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Author Comment

by:luxor
ID: 6965915
using Windows 98SE
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Author Comment

by:luxor
ID: 6965934
using Windows 98SE
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LVL 63

Expert Comment

by:SysExpert
ID: 6965944
It is not quite clear what you are trying to do here.

Please provide more details on this machine.

Also please, post the results of

ipconfig /all
from a DOS windows, as this will provide more info.

Do you have 2 NICs in this machine ?

Is it a server ?

Is it connecting to the Internet ONLY through the DirecPC NIC.

I hope this helps !
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LVL 63

Accepted Solution

by:
SysExpert earned 100 total points
ID: 6965949
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Author Comment

by:luxor
ID: 6966245
O.K.

I have 16 computers and 4 network printers connected to a hub. One of these computers has a broadband connection to the internet and we therefore are using it as a "server"- only for internet.

DirecPC on the "server" requires that their adapter has DNS turned on and a gateway listed.

My concern is that when I do this, and then check the TCP/IP settings of the ethernet and dialup adapters, they too have the new DNS and gateway settings. They still have unique IPs.

My concern then is that this causes the ethernet adapters to not easily communicate with the other computers. As it is, I have a question going with the fact that all the computers have a hard time seeing one or another in the workgroup. At times I can fire up Windows 98 and then immediately go to network neighborhood and see the other computers. Sometimes I only see two or three of the other computers and then at other times, I get told that the network is unavailable.

Does Windows 98 set one machine (maybe the lowest IP) to be the main go between or not?

Maybe the DNS doesn't matter.
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LVL 1

Expert Comment

by:ymash
ID: 6967164
You might have master browser problem. DO you have a WINS server setup? with 16 machines, it's probably a good idea to configure one.

As far as the DNS and gateway settings, they are global for all adapters. You don't want to set more than one gateway anyway, that causes problems.
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LVL 63

Expert Comment

by:SysExpert
ID: 6967537
DNS and Gateways should NOT affect local computers in any case. This is a WINS issue normally.
You can alos use an LMHOSTS file to define all your machines if there are problems.
See the lmhosts.sam file for a sample.
copy it to LMHOSTS ( no suffix ) and edit as needed.

I hope this helps !
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LVL 1

Expert Comment

by:TeckWitt
ID: 6967754
I have been reading through here and this seems to be a very easy thing to configure. The DirectPC TCP/IP settings are always controlled by the ISP and will continue to change. On the other NIC in this WIN98 machine you have to use static IP address's and the IP address of this NIC will be the default gateway for all the other machines on your network.
How are you sharing the connection? Are you running some type of Proxy server software (IE. SyGate) on the machine you are sharing the internet connection from?
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LVL 31

Expert Comment

by:rid
ID: 6967811
A small detail here: I have once tried to use two different TCP/IP setups on win95/98 box. To me it seems the settings for gateway and DNS server will spill over from one adapter to the other, which can be a problem if one config is a DHCP client setup and the other a static IP.

Are you using the machine with DirecPc (?) as an internet router for your LAN? If so, what software is involved for routing?

Regards
/RID
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