Application Diagram
Figure 5-3 Application Diagram
Stack Introduction
1.
Stack Elements
1
）
Stack Role
Each device in the stack system is called stack member. Each stack member processes
services packets and plays a role which is either master or member in the stack system.
The differences between master and member are described as below:
•
Master:
Indicates the device is responsible for managing the entire stack system.
•
Member:
Indicates the device provides backup for the master. If the master fails, the
stack will elect a new master from the remaining members to succeed the previous
master.
2
）
Stack Event
Stack event indicates the global events which might happen during stack operation
process, with two options:
•
Merge:
It occurs when two independent stacks merge into one stack because of stack
link establishment, as shown in the following figure:
Figure 5-4 Stack Merge
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