High speed internetworking traffic scaler and shaper

Details High speed internetworking traffic scaler and shaper High speed internetworking traffic scaler and shaper

1997-11-26

2000-04-18

Kizou, Hassan

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370395, 370429, H04L 1256

Patent

active

060523751

ABSTRACT:
A method and system are provided for traffic shaping and bandwidth scaling in a high speed internetworking device. A slot time wheel mechanism is provided for traffic rate control and a credit/debit mechanism is provided for traffic shaping and scaling. The high speed traffic scaler and shaper incorporates a programmable slot time wheel, a traffic scaler state machine, a traffic shaper parameter table and a traffic scaler processor. The traffic scaler processor incorporates a traffic queue allocation manager, a queue priority arbiter, a port enable selector, a port priority arbiter and a DMA channel arbiter. The traffic queue allocation manager and the queue priority, port priority and DMA channel arbiters are each controlled by a corresponding state machine. The parameters in the traffic shaper parameter table are dynamically updated for each logical queue and are used to enable the credit/debit mechanism.

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