Patent ID: 11902158
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A router for transmitting data packets from a source to a destination within a communications network, comprising:
a non-transitory memory storage comprising instructions; and
one or more processors in communication with the memory, wherein the one or more processors execute the instructions to:
receive a first data packet from the source located in a local sub-network of the network, the first data packet including a first network layer protocol header having a source address containing a local sub-network address of the source, a destination address of the destination, a first field indicating a length of the source address and a second field indicating a length of the destination address;
transform the first network layer protocol header by modifying the source address and the first field indicating the length of the source address, the modifying including appending to the local sub-network address a prefix of the sub-network to make the source address an address of a higher level network; and
forward the data packet, including a transformed local-sub-network address, toward the destination in the higher level network.