JUNOSe 9.1.x Quality of Service Configuration Guide > Configuring Implicit and Explicit Constituent Selection for Shaping > Configuring Implicit Constituents for Simple or Compound Shared Shaping

Configuring Implicit Constituents for Simple or Compound Shared Shaping

There are two types of implicit constituents:

• Simple implicit—Constituents are best-effort node or queues, and all nodes and queues in named traffic-class groups.
• Compound implicit—Constituents are selected automatically by the software. If a node exists in a given traffic-class group, the node is active and the queues stacked above it are inactive constituents.

Before you configure implicit constituents:

• Configure the traffic classes and traffic-class groups.

See Configuring Traffic Classes That Define Service Levels and Configuring Traffic-Class Groups That Define Service Levels.

To configure implicit constituents:

1. Create the scheduler profile.

host1(config)#scheduler-profile implicit

2. Configure the shared shaper.

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

3. (Optional) For compound shared shapers, specify the attributes for the constituent.

host1(config-scheduler-profile)#shared-shaping-constituent weight 28

Including this command does not affect how the system selects the compound implicit constituent. If the command is present for a constituent that was implicitly selected, the software configures that constituent using the strict-priority or weight attributes.

After you configure implicit constituents:

• Configure the scheduler hierarchy with the best-effort nodes and queues.

See Configuring a QoS Profile.

Related Topics

• Constituent Selection for Shared Shaping Overview
• Implicit Constituent Selection Overview
• scheduler-profile command
• shared-shaping-constituent command
• shared-shaping-rate command