... I decided to completely rebuild our double windows-7 network to solve the probs ...
... this is what I have done so far: ...
-1- moved the router to a different outlet (means ~400 kbps less download speed and ~100 kbps less upload speed)
-2- connected the switch via cat5e to the router
-3- connected the file transfer pc to the switch
-4- connected all pc and the printer via wlan
-5- turned off dhcp in the router
-6- turned on ip routing in the registry for all double network pc
-*- previous created homegroup is still existent
-7- LAN configuration like this:
---------- IP: 192.168.1.x
---------- Subnet: 255.255.0.0
---------- Gateway: 192.168.1.1
---------- DNS: 203.12.160.35 // 203.12.160.36
---------- Metric: 10
-8- WLAN configuration like this:
---------- IP: 192.168.1.x
---------- Subnet: 255.255.255.0
---------- Gateway: 192.168.1.1
---------- DNS: 203.12.160.35 // 203.12.160.36
---------- Metric: 50
... everything is now working fine and all the unidentified networks are gone and every connection has joined the home network ...
... the only change I am thinking about is, maybe to give my router a second IP / Subnet and use this as the gateway for the LAN ...
... btw. I have ordered this ipv6 book too and will have a look, if a change from ipv4 to ipv6 for one or all networks would bring up another improvement: ...
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... THX! a lot @Trouble for your help ! ...
PS: ... I only got the MCP (Windows-NT-4-Server) and CNA (3.12 / 4.11) in 1999/2000, but never worked with it, because I had no basic IT-study in germany and as I moved to australia I had to throw out all my documents, because to heavy for the plane ... if you don't use it on a daily basis, most of your knowledge will disappear ...
Best Regards