Packet switch device and method of the same
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United States of America Patent
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Aug 15, 2017
Grant Date -
Nov 20, 2014
app pub date -
Feb 21, 2014
filing date -
May 17, 2013
priority date (Note) -
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Abstract
A packet switch device includes an input port, a loop-back port, a storage module, and a switch engine. The input port receives a packet. The storage module stores packet flow tables. Each packet flow table includes at least one flow entry and action. The switch engine compares the packet with a default packet flow table of the plurality of packet flow tables when it determines that the packet does not include a flow header. The switch engine includes the packet with the flow entry of the default packet flow table and performs the corresponding action when the packet matches the flow entry. When the action includes a specific action of comparing the packet with another one of the packet flow tables, the switch engine attaches the flow header to the packet to set a flow ID therein and transmits the packet back to the switch engine through the loop-back port.
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