Method and system for output flow control in network...

Details Method and system for output flow control in network... Method and system for output flow control in network...

2003-12-08

2011-12-06

Yao, Kwang B (Department: 2473)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S412000, C370S429000

Reexamination Certificate

active

08072884

ABSTRACT:
A method and system for initiating selective flow control within a network multiplexer. Each port of a network multiplexer is associated with high and low threshold values, as well as a list of indications of ports that have requested the port to initiate flow control and a list of indications of ports which the port has requested to initiate flow control. A port that, by queuing a message descriptor to the transmit queue of a destination port, causes the number of message descriptors queued to the transmit queue of a destination port to equal or exceed its high threshold, is flow controlled by the destination port. When the number of message descriptors queued to the transmit queue of a destination port that previously equaled or exceeded the high threshold falls below the low threshold, all ports flow controlled by the destination ports are released from flow control.

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