I want to change usb to ethernet interface. When I try to do it is failing to communicate with the modem
Whenever you swap the Ethernet and USB connections, it will fail to work as the modem is still configured with your computers IP address on the port you are changing FROM. Since the computer has not used the Ethernet port after being changed from the USB port, the modem has no IP assigned.
The solution is simple and must be done ANY time ports are changed, either ones on the modem, or if you were to change Ethernet ports on you computer.
Swap your connections, then reset the modem by unplugging it's power cord on the back for at least 10 seconds, then plug in.
This forces the modem to reconfigure it's ports, and to re-issue the IP address to your computer on the new port.
Since the modem only configures a port when the computer is plugged into it as it starts up, the other one is left in an unusable state.
The same equally applies if you were to add a second computer using the second modem port. You would also need to reboot the modem. Note that using both ports on the modem, each of which gets a separate IP from the ISP, is usually disabled by your cable company as you normally have to pay extra for multiple IP addresses. Sometimes the ISP overlooks this and you can get away with a free second IP address as I did with this same modem... until they wised up! Now I can use either port, but not both together. Only one get's an IP address.
May 05, 2009 |
Toshiba PCX2200 (pcx2200key) Modem