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About the Nortel Ethernet Routing Switch 4500 Series
CFG mirror images in the stack after adding unit 4
Removing an NBU
When you remove an NBU from a stack, the related
CFG mirror image in the stack becomes INACTIVE.
The AUR feature ensures that the stack always has two copies of an
INACTIVE CFG mirror image. These two copies must not reside in the
same unit in the stack.
For example, after you remove unit 4 from the stack shown in
images in the stack after adding unit 4" (page 124)
, the CFG 4 mirror image
becomes INACTIVE (see
"CFG mirror images after removing unit 4" (page
). Another copy of the INACTIVE CFG 4 mirror image is also created
in unit 2.
Nortel Ethernet Routing Switch 4500 Series
Overview — System Configuration
NN47205-500
02.01
Standard
5.0
23 February 2007
Copyright © 2007, Nortel Networks
Nortel Networks Confidential
.