Procedure For Qos Administrators - 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

Procedure for QoS Administrators

Configuring Traffic
Classes and Traffic
Class Groups
Configuring the
Parameter Definitions
230
subscriber to claim up to three times the bandwidth than the basic data service configured
for Subscriber 1.
For Subscriber 3, the QoS client configures an enhanced triple-play service consisting of
voice, video and best-effort data services. This enhanced triple-play service enables the
subscriber to transmit up to 8 Mbps of combined voice, video, and best-effort data traffic.
This service limits video traffic to 3 Mbps and enables low-latency bandwidth for up to
three 100 Kbps voice calls. The QoS client then assigns this subscriber a scheduler weight
value of 6, enabling this subscriber to claim up to six times the bandwidth of the basic
data service subscriber configured for Subscriber 1, and up to twice the bandwidth of the
basic triple-play subscriber configured for Subscriber 2.
This section describes the procedures to configure the scheduler hierarchy shown in
Figure 61 on page 229 by using QoS parameters.
The QoS administrator configures traffic classes and traffic-class groups for best-effort
data, video, and voice services.
Configure the traffic classes.
1.
a. Configure the traffic class named best-effort.
b. Configure the traffic class named video.
c. Configure the traffic class named voice.
d. Enable the voice traffic class to provide a strict priority treatment throughout the
fabric.
host1(config)#traffic-class best-effort
host1(config-traffic-class)#exit
host1(config)#traffic-class video
host1(config-traffic-class)#exit
host1(config)#traffic-class voice
host1(config-traffic-class)#fabric-strict-priority
host1(config-traffic-class)#exit
Configure a traffic-class group for low-latency expedited forwarding (EF) and add
2.
the voice traffic class into the traffic-class group EF.
a. Configure the EF traffic-class group with strict-priority scheduling.
b. Add the voice traffic class to the traffic-class group.
host1(config)#traffic-class-group EF auto-strict-priority
host1(config-traffic-class-group)#traffic-class voice
host1(config-traffic-class-group)#exit
The remaining traffic classes, best-effort and video, remain in the default
traffic-class group.
After configuring the traffic classes and traffic-class groups, the QoS administrator
configures the parameter definitions for Subscribers 1, 2, and 3.
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