| 摘要 |
A modem and communication method between a wide area network (WAN) and a client device receives a communication data packet from the WAN or the client device, and removes a virtual local area network identification (VLAN ID) of the communication data packet in response to a determination that a VLAN ID of the communication data packet does not identify a local area network port of the modem. The modem and communication method further translates an IP address of the communication data packet having no VLAN ID, and transmits the translated communication data packet to the client device or the WAN using a network access translation port of the modem. Furthermore, the modem and communication method transmits the communication data packet containing the VLAN ID to the client device or the WAN using the LAN port.
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