Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual page 1617

Chapter 63: Bridging and VLANs—Overview
Figure 36: Redundant Trunk Group, Link 1 Active
Figure 37 on page 1513 illustrates how the redundant trunk link topology works when the
primary link goes down.
Figure 37: Redundant Trunk Group, Link 2 Active
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