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General Network Challenges [ micro-burst ] CCNP.


A micro-burst occurs when a specific amount of data (in bytes) is exceeded in a given time interval.

Micro-Burst Monitoring Overview
The micro-burst monitoring feature allows you to monitor traffic on a per-port basis for both ingress and
egress ports and to detect unexpected data bursts within a very small time window (micro-seconds). This allows you to detect flows in the network that are at risk of data loss, and that may require extra bandwidth. The micro-burst monitoring feature allows you to specify these limits as absolute values (for data and burst size) or as a percentage of the link speed. When these thresholds are exceeded the system generates a Syslog alarm message.

How to Use Micro-Burst Monitoring
The micro-burst monitoring feature monitors bursts in real time. The monitoring process also provides an overview of data path issues, and is helpful in identifying potential capacity issues in a network. Syslog
messages are generated with the burst exceeds the configured value.

 Micro-burst monitoring provides real-time burst information that is used to:
• monitor network micro bursts
• trigger to congestion detection and latency processes

 knowing your micro-burst is key to a smoothly functioning network environment. if that's for ultra low latency or high throughput enterprise networks having the right tools to understand your network flow is critical.


Configuration Example for Micro-Burst Monitoring The following example shows how to configure micro-burst monitoring on an Ethernet interface:

switch# configure terminal
switch(config)# interface ethernet 1/1
switch(config-if)# burst threshold egress limit 50 interval 30
switch(config-if)# burst threshold ingress size 500000 interval 16000
switch(config-if)# burst maximum egress burst-count 50000
switch(config-if)# burst maximum ingress burst-count 600000
switch(config-if)# exit
switch(config)#exit
switch# copy running-config startup-config




Related topics-
 Unicast flooding
 Out-of-order packets
 Asymmetric routing



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