Figure 60: Physical Network Topology; Figure 61: Qos Scheduler Hierarchy - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - QUALITY OF SERVICE CONFIGURATION GUIDE 2010-09-22 Configuration Manual

Chapter 25: Configuring a QoS Parameter

Figure 60: Physical Network Topology

The S-VLAN scheduler nodes correspond to the DSLAM in the physical network topology;
the VLAN scheduler nodes correspond to the subscribers.
Figure 61 on page 229 shows the QoS scheduler hierarchy that the QoS client creates when
configuring a different service for each subscriber.

Figure 61: QoS Scheduler Hierarchy

For Subscriber 1, the QoS client configures a basic best-effort data service, with a
maximum rate of 2 Mbps, and assigns a scheduler weight value of 1.
For Subscriber 2, the QoS client configures a basic triple-play service consisting of voice,
video, and best-effort data services. This service enables the subscriber to transmit up
to 6 Mbps of combined voice, video, and best-effort data traffic. The service limits video
traffic to 2 Mbps and enables low-latency bandwidth for one 100 Kbps voice call. The
QoS client then assigns this subscriber a scheduler weight value of 3, enabling this
Copyright © 2010, Juniper Networks, Inc. 229