Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2005-10-04
2005-10-04
Phunkulh, Bob A. (Department: 2661)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S428000, C710S056000
Reexamination Certificate
active
06952424
ABSTRACT:
A system and method of moving information units from a network processor toward a data transmission network in a prioritized sequence which accommodates several different levels of service. The present invention includes a method and system for scheduling the egress of processed information units (or frames) from a network processing unit according to stored priorities associated with the various sources of the information units. The priorities in the preferred embodiment include a low latency service, a minimum bandwidth, a weighted fair queueing and a system for preventing a user from continuing to exceed his service levels over an extended period. The present invention includes a weighted fair queueing system where the position of the next service in a best efforts system for using bandwidth which is not used by committed bandwidth is determined based on the length of the frame and the weight of the particular flow. A “back pressure” system keeps a flow from being selected if its output cannot accept an additional frame because the current level of that port queue exceeds a threshold.
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PCT International Search Report dated Nov. 6, 2001.
Bass Brian Mitchell
Calvignac Jean Louis
Heddes Marco C.
Siegel Michael Steven
Verplanken Fabrice Jean
Cockburn Joscelyn G.
Phunkulh Bob A.
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