C H A P T E; Micro-Burst Monitoring; Guidelines And Limitations For Micro-Burst Monitoring - Cisco Nexus 9000 Series Configuration Manual

Micro-Burst Monitoring

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Micro-Burst Monitoring
The micro-burst monitoring feature allows you to monitor traffic to detect unexpected data bursts within a
very small time window (microseconds). This allows you to detect traffic in the network that are at risk for
data loss and for network congestion.
A micro-burst is detected when the buffer utilization in an egress queue rises above the configured rise-threshold
(measured in bytes). The burst for the queue ends when the queue buffer utilization falls below the configured
fall-threshold (measured in bytes).
The feature provides timestamp and instantaneous buffer utilization information about the various queues
where micro-burst monitoring is enabled.
Depending on the switch, you can enable the micro-burst detection per-queue or per-switch.

Guidelines and Limitations for Micro-Burst Monitoring

The following are the guidelines and limitations for micro-burst monitoring:
• Micro-burst monitoring is not supported on the Cisco Nexus 9508 switch (Cisco NX-OS Release NX-OS
• Micro-burst monitoring and detection is supported on Cisco Nexus 9300-FX platform switches, Cisco
• show commands with the internal keyword are not supported.
• Micro-burst monitoring is available with switches that contain the Network Forwarding Engine (NFE2).
Micro-Burst Monitoring, on page 173
Guidelines and Limitations for Micro-Burst Monitoring, on page 173
Configuring Micro-Burst Detection Per-Queue, on page 175
Clearing Micro-Burst Detection, on page 177
Verifying Micro-Burst Detection, on page 178
Example of Micro-Burst Detection Output, on page 178
7.0(3)F3(3).
Nexus 9300-FX2 platform switches, and Cisco Nexus 9364C switches.
The minimum micro-burst that can be detected is 0.64 microseconds for 1 - 3 queues.
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