Credit-loss-reco
The Credit-loss-reco Port-Monitor counter detects the instances of Credit Loss Recovery on a switchport. As the Tx Credit Loss Recovery section explains, when a switchport has zero remaining-Tx-B2B-credits for 1 second (F_Port) or 1.5 seconds (E_Port) continuously, it sends a Link Reset (LR) to reset the B2B credits on the port. This counter increments regardless of if the Link Reset Protocol is successful or not. This is the most severe indication of congestion. It is configured as a count within a poll-interval. We suggest rising threshold to be 1 or 2 in a 10-second or 60-second poll-interval. The falling threshold should always be 0. Since credit-loss recovery can severely impact a network, it is a good candidate for enabling portguard action of errdisable on edge ports. Credit-loss-reco Port-Monitor 计数器检测交换端口上的 "信元损失恢复 "实例。正如 "Tx 信元损失恢复 "部分所述，当交换端口的剩余 Tx-B2B 信元连续 1 秒（F_端口）或 1.5 秒（E_端口）为零时，它会发送链路重置（LR）以重置端口上的 B2B 信元。无论链路重置协议是否成功，该计数器都会递增。这是最严重的拥塞指示。它被配置为轮询间隔内的计数。我们建议在 10 秒或 60 秒轮询间隔内，上升阈值为 1 或 2。下降阈值应始终为 0。由于信元损失恢复会对网络造成严重影响，因此它是在边缘端口上启用 Erdisable portguard 操作的理想选择。
Suggested values
Poll-interval: 60 seconds
Type: delta
Rising-threshold: 1-2
Falling-threshold: 0
Event — 2 (Critical), indicates severe congestion.
Optional: Portguard errordisable (logical-type edge policy only)