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10. Managing Stacking and Redundancy
This chapter includes the following sections:
• Manage Stacking
• Manage Redundancy
Manage Stacking
The wireless controller supports stacking of up to three units for management of up to 150
access points through purchased licensing (see Licenses o
n page 18). One wireless
controller functions as the primary controller (also known a
s the master), and the other two
wireless controllers function as secondary controllers (also known as slaves).
The following figure shows a stacked configuratio
n that is licensed to manage up to
120 access points:
• T
wo controllers (1 and 2) each support up to 50 access points.
• On
e controller (3) supports up to 20 access points.
Figure 82.
The wireless controllers that you intend to make members of the stack need to be connected
over a wired connection. A switch or router can be located between the wireless controllers
that are part of a stack.
You configure the primary and secondary controllers individually, enable stacking on all
contr
ollers, and then synchronize their access point configurations with the primary
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