H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/46 (2006.01) H04L 12/56 (2006.01) H04L 29/06 (2006.01) H04L 29/12 (2006.01)
Patent
CA 2260561
A method for translating non Internet unique addresses of a home network device to an Internet unique address for internet communication through a router. Every device within a given home network is assigned three addresses:(i) a configured address identical to the network address of the router enabling access to an Internet; (ii) a logical address visible only to the other devices in the same home network; and (iii) a medium access control ("MAC") address. Every packet originating from a home network source device includes its MAC address, the router MAC address, its configured address and the network destination address, and is forwarded to its destination through the router. The router examines the network destination address to determine whether the communication is intranet or internet. For intranet communications the router replaces the configured address of the home network source device with the logical address of the home network source device, the logical address of the home network destination device with the configured address, its MAC address with the MAC address of the home network destination device, and forwards the packet to the home network destination device. For Internet communications the router forwards the packet along the Internet without replacing any of the source or destination information in the headers of the packet. Based on the source MAC address, however, the router records the logical address of the home network source device as well as the DA, SP, DP and PT in order to identify a response to the packet from the Internet destination device.
Aravamudan Murali
Tzeng Hong-Yi
Kirby Eades Gale Baker
Lucent Technologies Inc.
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