56
Nortel Ethernet Routing Switch 2500 Series stacking
CFG mirror image process
The CFG mirror image process is triggered by specific events.
Power Cycle
After a power cycle, all the CFG images in a stack are
mirrored.
Figure 15 "CFG mirror process in stack" (page 56)
illustrates the CFG mirror
images in a three-unit stack after the stack is powered on. Unit 1 is the
Based Unit (BU) and all other units are Non-Based Units (NBU).
•
Unit 1 (BU) contains mirror images for unit 2 (CFG 2) and unit 3 (CFG 3).
•
Unit 2 (NBU), is the TEMP-BU. It contains a mirror image of unit 1 (CFG
1), in case the BU (unit 1) is removed from the stack.
•
All three mirror images (CFG 1, CFG 2, and CFG 3) are active.
•
Unit 2 is the Associated Unit of the CFG 2 mirror image.
•
The Mac Address 2 is the Associated Mac Address (AMA) of the CFG
2 mirror image.
Figure 15
CFG mirror process in stack
Nortel Ethernet Routing Switch 2500 Series
Overview — System Configuration
NN47215-500 (323162-B)
02.02
Standard
4.1
19 November 2007
Copyright © 2007, Nortel Networks
.