56Nortel 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

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Nortel Networks 2500 Series manual CFG mirror image process, CFG mirror process in stack