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Windows Switching between LAN to WLAN not working

Hello,

I having a stange issue in my company actually we do MAC address filtering all PC on the SOPHOS Firewall is in a specific user VLAN with 2 autorised MAC address  ( 1 LAN and 1 WLAN ) and 1 reserved IP.

In the network we have Windows, Archlinux and MAC OS, on Linux and MAC OS computers when we unplug the Ethernet cable and turn on WIFI we have access to the network without any problem and the SOPHOS Firewall willl provide the same reserved IP to the Wireless Card. On Windows we have to unplug the ethernet cable restart the PC to be able to connect to WIFI...

Example 1:

I have a Windows PC with IP 10.10.X.X and I have to go to a meeting I will need to disconnect the Ethernet Cable and activate WIFI, the WIFI connection will not work ( The WIFI router is in the same VLAN as the Ethernet Cable) after a restart of the computer I will be able to connect to network the firewall will provide the IP 10.10.X.X.

After the meeting when I disactivate the WIFI connection and plug in the Ethernet cable I will not have access to the network unless I restart the computer.

 

Example 2.

I have a linux or MAC OS computer, I have to go to a meeting I just need to unplug the Wired Connection and connect to the WIFI it will work! The Sophos Firewall IP address will provide the same IP 10.10.X.X a the wired connection.

 

Hope that my explanations are clear enough... If you guys needs for details please let me know...

Thanks for your help.

Keshav



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