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

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Figure 50: Subscriber LoadBalanced Scheduler Hierarchy for Port 1
Subscriber Allocation in 802.3ad Link Aggregation Groups
You can configure upper-layer subinterfaces over a LAG interface, including VLANs,
PPPoE, and MPLS.
The system balances any upper-layer subinterfaces so that each active link in the
LAG carriers an equal number of upper-layer subinterfaces. For this purpose, the
system counts each upper-layer interface as a single subscriber, regardless of the
number of forwarding interfaces stacked above it.
Figure 51 on page 189 displays a sample allocation of subscribers.
Figure 51: Subscriber Allocation and Load Balancing
Subscriber Load Balancing for 802.3ad Link Aggregation Groups Overview
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Chapter 21: Configuring QoS for 802.3ad Link Aggregation Groups