troubleshooting Question

Using 2 Network Adapters with Windows 7

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itsmeandnobodyelseFlag for Germany asked on
DHCPInternet ProtocolsWindows 7
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I have two local LAN networks with some XP, one Vista, a few W2000 systems and now a new Windows 7 system.

One network is for internet only and is connected with a router to a DSL modem. The router's IP is The local IP addresses will be received from that router using DHCP. The only service used for those network adapters is TCP-IPv4.

The second network is for local data exchange only. It is workgroup based and the leading XP system has IP address All computers have a second networkcard which is connected to a local switch.

Both networks were working.

Now the problem: For Windows 7 I used  an Asus board with 2 Gigabit Network Adapters and achieved to configure those adapters to work like those of the other systems. I already achieved to copy most of the files from my main XP system using the second connection. But for unknown reasons the connection doesn't work anymore since a week or so. The issue is that the local net became a 'public network' and whatever I did since I recognized that my local net wasn't available in the explorere, I didn't achieve to both add an IP address like and make the network a 'workstation-based' non-public network. The wizard always 'solved' my problem by activating DHCP and removing my IP address. However, the first network already is DHCP-driven and I don't want (and need) to mix thoses servcies. If I insist on setting a fixed IP address The network connection became a public network and isn't be available for local connection.

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