i use vmware workstation on win7.
i create two vm network.
one by bridging pci nic and another by usb nic.
by usb nic, i cannot ping physical member of the network by a virtual machine that used this nic,too.
but by pci nic, there isn't any problem.
i attached the schema.
also please note that i disabled the firewall on the all of this network players.
what is the problem?