| 摘要 |
A network switch, configured for performing layer 2 and layer 3 switching in an Ethernet (IEEE 802.3) network without blocking of incoming data packets, includes network switch ports, each including a port filter configured for obtaining and filtering relevant layer 2 and layer 3 information from a received layer 2 frame. Each port filter, upon filtering the relevant layer 2 and layer 3 information from a received layer 2 frame, outputs the relevant layer 2 and layer 3 information to switching logic, enabling the switching logic to perform layer 3 processing to determine a layer 3 switching operation to be performed on the received layer 2 frame. Hence, the switching logic performs the layer 3 processing based on the relevant layer 2 and layer 3 information, without the necessity of parsing the received layer 2 and layer 3 information by the switching logic.
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