Tx-datarate-burst

The tx-datarate-burst Port-Monitor counter is similar to the tx-datarate counter, but it is designed to be more granular and therefore it detects when there are shorter bursts of high egress utilization. This counter can detect over-utilization in smaller one-second intervals and does not rely on the average Tx-datarate to be high over the entire poll-interval. tx-datarate-burst 端口监控计数器与 tx-datarate 计数器类似，但它的设计更加精细，因此能检测到较短的高出口利用率突发。该计数器可以检测较小的一秒间隔内的过度使用，而不依赖于整个轮询间隔内的平均 Tx-datarate 高值。

Tx-datarate-burst has a parameter, called datarate. Every one second, the egress link utilization is calculated. If the one-second Tx-datarate percentage equals or exceeds the configured datarate percentage threshold, then an internal counter increments by 1. When the count of that internal counter equals or exceeds the rising-threshold value, Port-Monitor triggers a rising-threshold alert. Tx-datarate-burst 有一个参数，称为数据速率。每一秒钟计算一次出口链路利用率。当该内部计数器的计数等于或超过上升阈值时，Port-Monitor 会触发上升阈值警报。

Like tx-datarate, tx-datarate-burst is a delta-type counter. 与 tx-datarate 一样，tx-datarate-burst 也是一个 delta 型计数器。

Besides generating alerts and syslog messages, Tx-datarate-burst also logs the events to OBFL. This allows recording of these types of events natively on the MDS switches. 除了生成警报和系统日志信息外，Tx-datarate-burst 还会将事件记录到 OBFL 中。这样就可以在 MDS 交换机上记录这些类型的事件。

As Figure 3-8 shows, tx-datarate and tx-datarate-burst can both be configured since they trigger slightly differently. However, if too many redundant alerts are generated, consider enabling just the tx-datarate-burst counter because it is designed to be more granular. 如图 3-8 所示，tx-datarate 和 tx-datarate-burst 都可以配置，因为它们的触发方式略有不同。不过，如果产生的冗余警报太多，可以考虑只启用 tx-datarate-burst 计数器，因为它的设计更加精细。