Guidelines For Controlling The Simple Shared Shaper Algorithm - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - QUALITY OF SERVICE CONFIGURATION GUIDE 2010-09-22 Configuration Manual

JunosE 11.3.x Quality of Service Configuration Guide
Step 1: Calculate the
New Measured Rate
Step 2: Calculate the
VOQL
Step 3: Calculate the
New Dynamic Rate
Step 4: Determine the
Larger Value of the
New Dynamic Rate and
the Minimum Dynamic
Rate
Related
Documentation

Guidelines for Controlling the Simple Shared Shaper Algorithm

88
This section describes the algorithm tasks in detail.
The simple shared shaper uses the following formula to calculate the new measured
rate:
The simple shared shaper maintains a VOQL, which cannot become less than zero, using
the following formulas:
Each rate period, the simple shared shaper calculates the new dynamic rate (the shaping
rate of the best-effort node or queue) using the following formula. The system prevents
the new dynamic rate from becoming less than zero.
The simple shared shaper determines the larger of the new dynamic rate and a minimum
dynamic rate, where the minimumDynamicRate is a fraction of the shared-shaping rate,
using the following formula:
Simple Shared Shaping Algorithm Overview on page 85
Sample Process for Controlling the Simple Shared Shaper Algorithm on page 90
You can configure the simple shared shaper variables individually, but it is useful to use
configuration guidelines to determine how the variables work together to achieve a
desired behavior.
Copyright © 2010, Juniper Networks, Inc.