| 摘要 |
The present invention provides a method and apparatus for transmitting packets. One embodiment of the present invention includes an access server receiving a packet from a first unit through a first interface of a plurality of interfaces. The access server maps the packet into a first frame to transmit the packet over a predetermined point-to-point connection. An interface number representing the first interface is stored in an address field of the first frame. The first frame is then forwarded via the point-to-point connection to a second unit. The second unit maps a response to the packet into a second frame and stores the interface number representing the first interface in an address field of the second frame. The second unit then forwards the second frame to the access server. Upon receipt, the access server reads the address field of the frame to determine through which interface the response is to be forwarded.
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