Chapter 10
Configuring Simple Shared Shaping of
Traffic
This chapter provides information for configuring simple shared shaping of traffic
on the E Series router.
QoS topics are discussed in the following sections:
■
Simple Shared Shaping Overview on page 79
■
Configuring Simple Shared Shaping on page 81
■
Example: Simple Shared Shaping for ATM VCs on page 83
■
Example: Simple Shared Shaping for ATM VPs on page 85
■
Example: Simple Shared Shaping for Ethernet on page 86
Simple Shared Shaping Overview
Simple shared shaping shapes the best-effort node or queue associated with a logical
interface to a shared rate.
Bandwidth Allocation for Simple Shared Shaping
Once per second, the simple shared shaper calculates the combined rate of the voice
and video queues for the logical interface, and shapes the best-effort queue for the
data traffic to the shared rate minus the video and voice queue rates. The bandwidth
for the voice and video queues is determined by the configuration of the hierarchical
scheduler. The shared shaper does not actively manage the video and voice queues.
Simple Shared Shaping on the Best-Effort Scheduler Node
If you have a second traffic class for data in addition to the best-effort data traffic
class, configure shared shaping on the best-effort scheduler node. In this scenario,
two weighted queues are stacked above the best-effort scheduler node, one for the
best-effort traffic class and the other for the second data traffic class. If you configure
the shared-shaping rate on the best-effort queue, then the shared shaper can have
a tendency to starve the best-effort queue in favor of the second data queue. If you
instead configure the shared-shaping rate on the best-effort node, the hierarchical
scheduler allocates bandwidth between multiple data queues based on their relative
weight and assured rate.
Simple Shared Shaping Overview
■
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Содержание JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010
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Страница 24: ...xxiv List of Figures JUNOSe 11 1 x Quality of Service Configuration Guide...
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Страница 33: ...Part 1 QoS on the E Series Router Quality of Service Overview on page 3 QoS on the E Series Router 1...
Страница 34: ...2 QoS on the E Series Router JUNOSe 11 1 x Quality of Service Configuration Guide...
Страница 44: ...12 Classifying Queuing and Dropping Traffic JUNOSe 11 1 x Quality of Service Configuration Guide...
Страница 76: ...44 Scheduling and Shaping Traffic JUNOSe 11 1 x Quality of Service Configuration Guide...
Страница 156: ...124 Monitoring QoS Scheduling and Shaping JUNOSe 11 1 x Quality of Service Configuration Guide...
Страница 162: ...130 Scaling Subscribers on the TFA ASIC with QoS JUNOSe 11 1 x Quality of Service Configuration Guide...
Страница 190: ...158 Interface Solutions for QoS JUNOSe 11 1 x Quality of Service Configuration Guide...
Страница 238: ...206 Monitoring QoS Configurations for L2TP JUNOSe 11 1 x Quality of Service Configuration Guide...
Страница 256: ...224 Managing Queuing and Scheduling with QoS Parameters JUNOSe 11 1 x Quality of Service Configuration Guide...
Страница 344: ...312 Monitoring and Troubleshooting QoS JUNOSe 11 1 x Quality of Service Configuration Guide...
Страница 388: ...356 Monitoring QoS Parameter Definitions JUNOSe 11 1 x Quality of Service Configuration Guide...
Страница 391: ...Part 8 Index Index on page 361 Index 359...
Страница 392: ...360 Index JUNOSe 11 1 x Quality of Service Configuration Guide...