Multiplex communications – Data flow congestion prevention or control – Flow control of data transmission through a network
Reexamination Certificate
2006-05-16
2006-05-16
Nguyen, Hanh (Department: 2668)
Multiplex communications
Data flow congestion prevention or control
Flow control of data transmission through a network
C370S230000, C370S389000, C370S412000
Reexamination Certificate
active
07046632
ABSTRACT:
A switch controller using a congestion control method can relieve congestion in a network. The Ethernet switch controller has the capacity to select a suitable congestion control mode according to each connection port and state of the connected device. If a flow control mode is selected, the switch controller issues a flow control frame and waits for the passing of a guard period roughly equivalent to a period of about inputting three packets. If the connected device continues to transmit network packets after the guard period, the switch controller switches from the flow control mode to a drop control mode. Hence, the received packets are discarded and congestion is prevented. Consequently, the switch controller of this invention can still carry out congestion control operation when the switch controller is connected to a device having no standard flow control capability.
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Chen Jen-Kai
Lin Yu-Ju
Liou Jiann-Hwa
Elallam Ahmed
J.C. Patents
Nguyen Hanh
VIA Technologies Inc.
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