Cisco Cisco Wireless LAN Controller Module Troubleshooting Guide

Introduction
 Prerequisites
      Requirements
      Components Used
      Conventions
 High Availability Enhancements in Wireless LAN Controller Software Release 5.0
 Reduce the Controller Failure Detection Time

Primary and/or Secondary Backup Controller(s)
Access Point Primary Discovery Request Timer
 Verify
 Related Information

This document explains the high availability enhancements that are introduced with the Wireless LAN
Controller release 5.0.

Cisco recommends that you have knowledge of these topics:

Knowledge of how to configure the Wireless LAN Controller (WLC) and Lightweight Access Points
(LAP)

• 

Knowledge of Lightweight Access Point Protocol (LWAPP)

• 

High Availability (HA) is supported on these WLC Platforms that run software version 5.0:

Cisco 4400 Series Wireless LAN Controllers

• 

Cisco 2100 Series Wireless LAN Controllers

• 

Cisco Catalyst 6500 Series Wireless Services Module (WiSM)

• 

Cisco Catalyst 3750G Integrated Wireless LAN Controller

• 

Cisco Wireless LAN Controller Module

• 

HA is not supported on AP1000 series. All other Access Points support HA.

The information in this document was created from the devices in a specific lab environment. All of the
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.