You have three options here. If you assign VLAN 4095 to a port group or a separate virtual switch you won’t need to have the VM’s on the same switch. VLAN 4095 is a special VLAN for network monitoring. Option 2 is the most common choice.
1. Connect the LANGuardian sensor port to the same virtual switch as the servers and allow promiscuous mode on this switch
2. Create a port group on an existing switch and connect the LANGuardian sensor to this. Assign VLAN 4095 and allow promiscuous mode.
3. Create a separate switch and configure it to use VLAN 4095 with promiscuous mode enabled.