Cisco Cisco 2504 Wireless Controller Manual Técnica
Contents
Introduction
Prerequisites
Requirements
Components Used
Background Information
Roaming with Higher-Level Security
WPA/WPA2-PSK
WPA/WPA2-EAP
Fast-Secure Roaming with CCKM
FlexConnect with CCKM
Pros with CCKM
Cons with CCKM
Fast-Secure Roaming with PMKID Caching / Sticky Key Caching
FlexConnect with PMKID Caching / Sticky Key Caching
Pros with PMKID Caching / Sticky Key Caching
Cons with PMKID Caching / Sticky Key Caching
Fast-Secure Roaming with Opportunistic Key Caching
FlexConnect with Opportunistic Key Caching
Pros with Opportunistic Key Caching
Cons with Opportunistic Key Caching
Note about the term “Proactive Key Caching”
Fast-Secure Roaming with Preauthentication
Pros with Preauthentication
Cons with Preauthentication
Fast-Secure Roaming with 802.11r
Fast BSS Transition Over-the-Air
Fast BSS Transition Over-the-DS
FlexConnect with 802.11r
Pros with 802.11r
Cons with 802.11r
Conclusions
Related Information
Introduction
This document describes the different types of wireless roaming and fast-secure roaming methods
available for IEEE 802.11 Wireless LANs (WLANs) supported on the Cisco Unified Wireless
Network (CUWN).
available for IEEE 802.11 Wireless LANs (WLANs) supported on the Cisco Unified Wireless
Network (CUWN).
The document does not provide all of the specifics about how each method works or how they are
configured. The main purpose of this document is to describe the differences between the various
techniques available, their advantages and limitations, and the frames-exchange on each method.
Examples of WLAN Controller (WLC) debugs are provided, and wireless packet captures are used
configured. The main purpose of this document is to describe the differences between the various
techniques available, their advantages and limitations, and the frames-exchange on each method.
Examples of WLAN Controller (WLC) debugs are provided, and wireless packet captures are used