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

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queues for each forwarding interface. Separate queues enable fair access to buffers
and bandwidth for each subscriber connected to the router.
Allocating queues per interface allows an Internet service provider (ISP) to shape an
individual subscriber’s traffic flows to specified rates independent of the underlying
Layer 2 network type.
Related Topics
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For a list of related RFCs, see Configuring QoS on the E Series Router on page 8
QoS Audience
This topic collection contains configuration information for two types of QoS users:
QoS administrators and QoS clients.
QoS administrators are responsible for implementing a QoS queuing architecture by
defining drop profiles, queue profiles, scheduler profiles, QoS profiles, and QoS
parameter definitions.
QoS clients are responsible for configuring services for individual subscribers by
creating parameter instances. The parameter instances that QoS clients can create
depend on the settings defined in parameter definitions by the QoS administrator.
Related Topics
■
For information about QoS users and QoS parameters, see QoS Parameter
Audience on page 225
QoS Platform Considerations
QoS is supported on all E Series line modules except for the ES2 10G Uplink LM.
Figure 1 on page 4 shows the traffic flow through the router.
Figure 1: Traffic Flow Through an E Series Router
E Series router
For information about the modules supported on E Series routers:
■
See the ERX Module Guide for modules supported on ERX7xx models, ERX14xx
models, and the Juniper Networks ERX310 Broadband Services Router.
■
See the E120 and E320 Module Guide for modules supported on the Juniper
Networks E120 and E320 Broadband Services Routers.
4 ■
QoS Audience
JUNOSe 11.1.x Quality of Service Configuration Guide