Realtek Semiconductor Inc.

Jui-Chang Tsao

Chen-Kuo Hwang

Po-Wei Liu

A method of forwarding information base synchronization for a network switch stacking system includes transmitting by at least one slave network switch at least one change event to a master network switch, generating by the master network switch a change confirmation to the at least one slave network switch when a master forwarding information base is determined to be necessarily updated by the master network switch according to the at least one change event, and updating by the at least one slave network switch at least one slave forwarding information base according to the change confirmation, wherein the at least one change event includes at least one of a new learn event, a port move event, a regular port aging out event, a logic aggregation update aging time event.

Method of handling multiple forwarding information base synchronization for network switch stacking system using central learning

A clock generation system having a time and frequency division activation mechanism is provided that includes a clock source processing circuit that generates a primary clock signal and clock-branching circuits that perform a clock-branching generation procedure respectively in an order. Each of the clock-branching modules includes a frequency division unit and a processing unit. The frequency division unit receives the primary clock signal to divide the frequency according to a divisor number and output a branch clock signal. The processing unit controls the frequency division unit to not output the branch clock signal before the clock-branching generation procedure and to decrease the divisor number gradually over time period after the clock-branching generation procedure begins such that a branch frequency of the branch clock signal generated by the frequency division unit increases from an initial frequency to a final frequency to finish the clock-branching generation procedure.

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Hsinchu County, Taiwan

Jui-Chang Tsao