Patent ID: 9191319
Filing Date: 2015-11-17
Classification: H04L,H04Q

Abstract:
1. A packet transmission system comprising: a plurality of packet switching modules each having a memory unit to store a plurality of packet flow tables; and a control module coupled to the packet switching modules to update the plurality of packet flow tables, wherein the control module comprises a memory to store a plurality of computer executable commands and a processor, and the processor executes the commands to perform operations of: generating a flow entry corresponding to a target packet switching module of the plurality of packet switching modules; selecting one of the packet switching modules as a redirection packet switching module from the packet switching modules other than the target packet switching module when a residual memory amount of the memory unit of the target packet switching module is lower than a threshold value, wherein the residual memory amount of the memory unit of the redirection packet switching module is not lower than the threshold value; and adding a redirection flow entry to the packet flow tables in the target packet switching module and adding a processing flow entry to the packet flow tables in the redirection packet switching module according to the flow entry; wherein when the target packet switching module receives a packet corresponding to the redirection flow entry, the target packet switching module redirects the packet to the redirection packet switching module according to the redirection flow entry such that the redirection packet switching module processes the packet according to the processing flow entry.