lpEngFcrcRxFrThreshTable - lp Eng Fcrc Rx Fr Threshold Table

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lpEngFcrcRxFrThreshTable

lp Eng Fcrc Rx Fr Threshold Table

This attribute is a vector which indicates the size and three discard thresholds for receive frame memory for this FP. The receive frame memory is used for storing frames received by this FP. The first value indicates the total receive frame memory size. This is derived based on the total receive memory capacity of this FP, and the number of connections specified. The current value of rxFrameMemoryUsage together with the vector of values in rxFrameMemoryThresholds determines the rxFrameMemoryCongestionState. The congestion state determines whether frames of a given discard priority (DP) are discarded or queued for processing. When the rxFrameMemoryUsage attribute is between threshold 0 and threshold 1, the rxFrameMemoryCongestionState indicates the value 0. In congestion state 0, traffic with DP > 0 is discarded. Threshold 1 is set approximately at 90 percent of threshold 0, the total receive frame memory size. When the rxFrameMemoryUsage attribute is between threshold 1 and threshold 2, the rxFrameMemoryCongestionState indicates the value 1. In congestion state 1, traffic with DP > 1 is discarded. Threshold 2 is set approximately at 85 percent of threshold 0, the total receive frame memory size. When the rxFrameMemoryUsage attribute is between threshold 2 and threshold 3, the rxFrameMemoryCongestionState indicates the value 2. In congestion state 2, traffic with DP > 2 is discarded. Threshold 3 is set approximately at 75 percent of threshold 0, the total receive frame memory size. When the rxFrameMemoryUsage attribute is below threshold 3, the rxFrameMemoryCongestionState indicates the value 3. In congestion state 3, traffic with DP=3 is queued.

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