Shared Shaper Terms; Table 6: Shared Shaper Terminology Used In This Chapter - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - QUALITY OF SERVICE CONFIGURATION GUIDE 2010-09-22 Configuration Manual

JunosE 11.3.x Quality of Service Configuration Guide
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Shared Shaper Terms

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Shared shaping is typically enabled on the access-facing line module, but you can enable
the feature for any interface type recognized by QoS, on any line module and any E Series
Broadband Services Routers.
Simple Shared Shaping Overview on page 75
Compound Shared Shaping Overview on page 95
Table 6 on page 68 defines terms used in this discussion of shared shaping.

Table 6: Shared Shaper Terminology Used in This Chapter

Term
Constituent
Active constituent
Inactive constituent
Shared Shaping
Implicit shared shaper
Explicit shared shaper
Compound shared shaping
Simple shared shaping
For definitions of other common QoS terms, see QoS Terms on page 5
Description
Scheduler node or queue associated with a logical interface.
A shared shaper is configured for a logical interface; all queues
and scheduler nodes associated with that logical interface are
constituents of the shared shaper.
Constituent that is monitored or controlled by the shared
shaper mechanism.
Constituent that is ignored by the shared shaper mechanism.
Inactive constituents can be indirectly controlled; for example,
queues stacked above a node that is an active constituent.
Mechanism for shaping a logical interface's aggregate traffic
to a rate when the traffic for that logical interface is queued
through more than one scheduler hierarchy.
Shared shaper where the system automatically selects the
active constituents. The system selects scheduler nodes as
active; queues above nodes remain inactive.
Shared shaper where you select the active constituents by
issuing the shared-shaping-constituent command in a
scheduler profile.
Hardware-assisted mechanism that controls bandwidth for
all active constituents.
Software-assisted mechanism that measures the rate of active
constituents, and shapes the rate of the best-effort node or
queue to the residual shared-shaping rate.
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