Patent ID: 8670452

Claim:
A method for transmitting and receiving a message, comprising steps of providing a bridge device having a bridge hardware address and a first end; receiving a first message from said first end, wherein said first message comprises a first hardware address, a first protocol address and a second protocol address; recording said first hardware address and said first protocol address on a table; generating a second message from the first message by only replacing said first hardware address rather than both of the present first hardware address and the present first protocol address, of the first message with said bridge hardware address once receiving said first message; transmitting said second message to a second end having a second hardware address corresponding to said second protocol address; transmitting a third message from said second end to said bridge device once receiving said transmitted second message, wherein said third message comprises said first protocol address, said second protocol address, said bridge hardware address, and said second hardware address; generating a fourth message by replacing said bridge hardware address of the third message with said first hardware address according to said table once receiving said transmitted third message; and transmitting said fourth message to said first end.