Figure 7: CFG mirror images after removing unit 4
Removing a BU:
When a BU is removed, the TEMP-BU assumes the role of the BU. Because all the CFG mirror
images of the NBUs reside in the removed BU, the TEMP-BU mirrors all the CFG image of the
NBUs in the stack.
After the removal of the BU from the stack, the TEMP-BU (unit 2) has to mirror all the CFG images
in the stack (as shown in the figure that follows). The feature also ensures that the stack always has
two copies of an INACTIVE CFG mirror image.
Getting started fundamentals
32 Getting Started with Avaya ERS 3500 Series July 2015
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