Congestion management in a multi-port shared memory switch

Details Congestion management in a multi-port shared memory switch Congestion management in a multi-port shared memory switch

2006-12-05

2006-12-05

To, Doris H. (Department: 2616)

Multiplex communications

Data flow congestion prevention or control

C370S414000, C370S416000, C370S418000

Reexamination Certificate

active

07145868

ABSTRACT:
A method and system for detecting and controlling congestion in a multi-port shared memory switch in a communications network. The proposed congestion management scheme implements a local and a global congestion monitoring process. The local monitoring process monitors the queue depth. When the queue depth for any queue exceeds a queue length threshold a congestion control mechanism is implemented to limit incoming data traffic destined for that queue. Additionally, the global congestion monitoring process monitors the shared memory buffer and if the traffic thereto exceeds a shared memory buffer threshold a congestion control mechanism limits incoming traffic destined for any output queue which has been exceeding a fair share threshold value.

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