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

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Related Topics
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Simple Shared Shaping Overview on page 79
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Guidelines for Configuring Simple and Compound Shared Shaping on page 74
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For more information about specifying an expression that you can reference
within a scheduler profile, see Using Expressions for Bandwidth and Burst Values
in a Scheduler Profile on page 48
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Example: Simple Shared Shaping for ATM VCs on page 83
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Example: Simple Shared Shaping for ATM VPs on page 85
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Example: Simple Shared Shaping for Ethernet on page 86
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node
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qos-profile
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queue
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scheduler-profile
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shared-shaping-rate
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traffic-class
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traffic-class-group
Example: Simple Shared Shaping for ATM VCs
The following commands configure a simple shared shaper for a VC, as shown in
Figure 18 on page 80. In this example, the best-effort queue for logical interface VC
3 is shaped to a shared rate of 1 Mbps. The voice and video queues for VC 3 share
the 1 Mbps with the best-effort traffic. The voice queue has first claim on the shared
1 Mbps, but only up to its individual shaping rate of 200 Kbps. The video queue
claims up to the next 300 Kbps. The best-effort queue obtains whatever bandwidth
remains of the 1 Mbps after the voice and video traffic have made their claims.
1.
Configure the traffic classes and traffic-class groups.
(config)# traffic-class voice
(config-traffic-class)# fabric-strict-priority
(config-traffic-class)# exit
(config)# traffic-class video
(config-traffic-class)# exit
(config)# traffic-class-group EF auto-strict-priority
(config-traffic-class-group)# traffic-class voice
(config-traffic-class-group)# exit
((config)# traffic-class-group AF extended
(config-traffic-class-group)# traffic-class video
(config-traffic-class-group)# exit
2.
Configure the shared shaper.
(config)# scheduler-profile 200kbps
(config-scheduler-profile)# shaping-rate 200000
(config-scheduler-profile)# exit
(config)# scheduler-profile 300kbps
Example: Simple Shared Shaping for ATM VCs
■ 83
Chapter 10: Configuring Simple Shared Shaping of Traffic