Juniper JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010, Configuration Manual

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When calculating constant shaping rates, use the following formula to translate burst
values from bytes to milliseconds (ms):
Using this formula, a 2 Mbps service with a 500 KB burst yields:
The shaping rate is calculated when the QoS profile is attached based on the
parameter instance. For example:
host1(config)# scheduler-profile sp-1mbs
(config-scheduler-profile)# shaping-rate video-bandwidth % 100 burst 500 milliseconds
When the shaping rate for video-bandwidth is 2 Mbps, the burst value is calculated
using the following formula:
The burst value in bits is calculated as:
The burst value in bytes is calculated as:
Using Expressions for Bandwidth and Burst Values in a Scheduler Profile
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Chapter 6: QoS Scheduler Hierarchy Overview