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No Direct connect to LAN after dialing i

By francis.brown ·
My W2K Pro PC is on a corporate IP network. Software such as Lotus Notes works fine, until I use a Dial Up connection to my ISP. Once I connect to the ISP, the software returns errors that the server(s) are unavailable. Doing a Tracert on a local server name shows the traffic going to the DUN. Is it not possible to have both a direct connection to one network while having another dial up connection to an ISP? What's wrong here?

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No Direct connect to LAN after dialing i

by ab3_tek In reply to No Direct connect to LAN ...

Right click My Network Places and select Properties. Do this when a DUN connection is present the verify that you have a connection to your LAN and DUN (make sure that your LAN is not grayed out. If it is right click it and select enable.) This should cure your problem. Also make sure that you do not have IP forwarding on.

Good luck.

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No Direct connect to LAN after dialing i

by francis.brown In reply to No Direct connect to LAN ...

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No Direct connect to LAN after dialing i

by Stillatit In reply to No Direct connect to LAN ...

The problem is that when you connect the DUN, it is changing your default route. I do not have W2K in front of me right now, but in previous versions, the DUN had a check box for "Use default gateway of remote host" or something like this. This tells your system that all connections to routes which are unknown should go through the DUN. You normally need this to talk to your ISP.

A solution is to create a batch file which executes some ROUTE ADD commands to place explicit routes to your local lan in your computer's routing table. Explicit routes override default routes. You can automatically execute this file at login, or put an icon on your desktop and run it as needed.

In general, what you are after is to designate that for your segment, your IP address is the gateway, and for each other segment of your LAN, the router to be used is your gateway router. Assume:
Your local segment 192.168.0.0
Your machine IP 192.168.0.42
Your router 192.168.0.1
Another segment on your lan 192.168.1.0

Your commands would be
ROUTE ADD 192.168.0.0 MASK 255.255.255.0 192.168.0.42
ROUTE ADD 192.168.1.0 MASK 255.255.255.0 192.168.0.1

Good luck.

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No Direct connect to LAN after dialing i

by francis.brown In reply to No Direct connect to LAN ...

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No Direct connect to LAN after dialing i

by francis.brown In reply to No Direct connect to LAN ...

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