Adjustment; Figure 63: Scheduler Hierarchy With Qos Adjustment For Ip Multicast - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - QUALITY OF SERVICE CONFIGURATION GUIDE 2010-09-22 Configuration Manual

Example: QoS Parameter Configuration for IP Multicast Bandwidth Adjustment
Configuring Traffic
Classes and
Traffic-Class Groups
Copyright © 2010, Juniper Networks, Inc.
Chapter 27: Configuring IP Multicast Bandwidth Adjustment with QoS Parameters
traffic-class
vlan id
In this example, a QoS administrator configures a QoS parameter definition to associate
with the IP multicast bandwidth adjustment application.
The QoS administrator configures the parameter definition to perform the QoS adjustment
on an ATM VC subscriber. By specifying the ip-multicast keyword with the
qos-parameter-define command, the IP parameter instances are created when the
Internet Group Management Protocol (IGMP) joins and leaves.
When you specify a controlled-interface type for atm-vc, the system explicitly creates a
parameter instance at the ATM VC with a value that is equal to the sum of the IP
adjustments above this interface. This parameter value is referred by a scheduler profile
and a QoS profile to create the QoS scheduler hierarchy that adjusts the shared-shaping
rate when IGMP joins and leaves.
This subscriber has data, voice, and video service with total subscriber bandwidth of
10 Mbps. Voice traffic is shaped at 192 Kbps and belongs to the strict priority group. Video
traffic is provided by the IP multicast bandwidth adjustment application and its rate is
configured in the bandwidth map.
Figure 63 on page 257 shows the scheduler hierarchy built in this configuration.

Figure 63: Scheduler Hierarchy with QoS Adjustment for IP Multicast

The QoS administrator configures the traffic classes and traffic-class groups for
best-effort data and voice services. The QoS administrator does not need to configure
a traffic class for the video service because it is transmitted through the IP multicast
connection.
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