Cisco 802.11r BSS Fast Transition: Configuration Guide for Catalyst 9800 Wireless Controllers

This document provides a comprehensive overview of the IEEE 802.11r standard, commonly known as BSS Fast Transition. It details how this technology enhances wireless network performance by enabling faster roaming between access points (APs) for client devices.

Fast Transition streamlines the roaming process by allowing clients and APs to pre-calculate authentication keys, significantly reducing the time and latency associated with re-establishing a connection when moving between APs. This is crucial for maintaining seamless connectivity for voice and data applications.

The guide covers the technical aspects, including the underlying mechanisms of client roaming via Over-the-Air and Over-the-Distribution System (DS) methods. It also outlines various configuration procedures for implementing 802.11r Fast Transition on Cisco wireless networks, including steps for both Command Line Interface (CLI) and Graphical User Interface (GUI) environments, supporting different security types like Dot1x and PSK.

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Understanding 802.11r BSS Fast Transition

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