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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Configuring Explicit Constituents for Simple or Compound Shared Shaping on
page 120
Configuring Explicit Constituents for Simple or Compound Shared Shaping
You can specify explicit constituents and set the attributes of both implicit and explicit
shared-shaping constituents that determine how bandwidth is allocated to them.
There are two types of explicit constituents:
■
Simple explicit constituents—The software selects constituents based on the
shared-shaping-constituent command. The weight and priority attributes of
the shared-shaping-constituent command are ignored, because the simple
shared shaper does not allocate bandwidth among constituents; instead it controls
just the best-effort queue or node.
■
Compound explicit—The software selects constituents based on the configured
shared priority and shared weight in the
shared-shaping-constituent command.
If no attributes are specified, the software supplies a shared priority consistent
with the legacy scheduler configuration. You can specify a constituent as strict
(priority) or weighted. Strict-priority constituents are allocated bandwidth ahead
of weighted constituents.
Before you configure explicit constituents:
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Configure the traffic classes and traffic-class groups.
See “Configuring Traffic Classes That Define Service Levels” on page 14 and
“Configuring Traffic-Class Groups That Define Service Levels” on page 15.
To configure explicit constituents:
1.
Create the scheduler profile.
host1(config)# scheduler-profile explicit
2.
Configure the shared-shaper and specify that you do not want the router to
identify shared shaper constituents associated with the logical interface.
To configure a simple shared shaper:
host1(config-scheduler-profile)# shared-shaping-rate 128000 bps
To configure a compound shared shaper:
host1(config-scheduler-profile)# shared-shaping-rate 128000 burst 32767
compound explicit-constituents
3.
Specify the attributes for the explicit constituent.
host1(config-scheduler-profile)# shared-shaping-constituent weight 28
You can specify a constituent as strict (priority) or weighted. Strict-priority
constituents are allocated bandwidth ahead of weighted constituents.
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Configuring Explicit Constituents for Simple or Compound Shared Shaping
JUNOSe 11.1.x Quality of Service Configuration Guide