CCNA Wireless 640-722 Official Cert Guide

Building Redundancy

Building a wireless network with one controller and some APs is straightforward, but it does not address what would happen if the controller fails for some reason. Adding another controller or two could provide some redundancy, as long as the APs know how to move from one controller to another when the time comes.

Redundancy is best configured in the most deterministic way possible. The following sections explain how you can configure APs with primary, secondary, and tertiary controller fields to implement various forms of redundancy. As you read through the sections, keep in mind that redundant controllers should be configured similarly so that APs can move from one controller to another without having to undergo any major ...