Abstract: A network bridging device, a bus test method and a system thereof are disclosed. The method comprises the steps of: receiving a packet signal via a first network port, wherein the packet signal is specified to be transmitted to a second network connection device; turning off a MAC learning function of a network switching module; setting a port isolation function of the network switching module to isolate a connection between the first network port and a second network port, such that the packet signal is transmitted to a processing module; controlling the processing module to enable a remote loopback function of a media access control port to cause the processing module to return the packet signal to the second network connection device so as to acquire a throughput of a bus.

Abstract: The present invention is to provide an ADSL modem for providing an IPoA, a PPPoA, or a PPPoE based dial-up networking service over Ethernet, which comprises a DHCP server coupled to at least one computer, each computer is adapted to use a DHCP provided by an OS thereof to obtain an authorized IP address and associated settings from an ISP through the DHCP server, and the DHCP server is adapted to assign the authorized IP address and the associated settings to each computer, enabling at least one computer to access the Internet without installing any driver or application program.

Abstract: The present invention is to provide an ADSL modem for providing an IPoA, a PPPoA, or a PPPoE based dial-up networking service over Ethernet, which comprises a DHCP server coupled to at least one computer, each computer is adapted to use a DHCP provided by an OS thereof to obtain an authorized IP address and associated settings from an ISP through the DHCP server, and the DHCP server is adapted to assign the authorized IP address and the associated settings to each computer, enabling at least one computer to access the Internet without installing any driver or application program.