Техническая Инструкция для Cisco Cisco 2000 Series Wireless LAN Controller
AP Load Balancing and AP Fallback in Unified
Wireless Networks
Wireless Networks
Document ID: 71963
Contents
Introduction
Prerequisites
Requirements
Components Used
Related Products
Conventions
Configure
AP Load Balancing
AP Fallback
Recommendations
Related Information
Prerequisites
Requirements
Components Used
Related Products
Conventions
Configure
AP Load Balancing
AP Fallback
Recommendations
Related Information
Introduction
This document discusses how access point (AP) load balancing and AP fallback work in the Cisco Unified
Wireless solution. This document also explains how to set up multiple wireless LAN (WLAN) controllers
(WLCs) for a failover condition. A failover condition occurs when a primary controller goes down or fails for
any reason. Then, a second controller takes over the operation. Failover is also called controller redundancy.
Wireless solution. This document also explains how to set up multiple wireless LAN (WLAN) controllers
(WLCs) for a failover condition. A failover condition occurs when a primary controller goes down or fails for
any reason. Then, a second controller takes over the operation. Failover is also called controller redundancy.
Note: AP fallback discussed in this document is only related to the controller firmware version before
3.2.171.5. Later versions of controller firmware do not behave in this way. In the latest version of firmware,
the AP falls back to the primary controller whenever it comes online. If you have an AP fallback issue, read
this document or upgrade your controller firmware to the latest available code.
3.2.171.5. Later versions of controller firmware do not behave in this way. In the latest version of firmware,
the AP falls back to the primary controller whenever it comes online. If you have an AP fallback issue, read
this document or upgrade your controller firmware to the latest available code.
Prerequisites
Requirements
Cisco recommends that you have knowledge of these topics:
Configuration of lightweight APs and Cisco WLCs
•
Lightweight AP Protocol (LWAPP)
•
Configuration of an external DHCP server
•
DNS Server
•
Components Used
The information in this document is based on these software and hardware versions:
Cisco Aironet 1000 Series Lightweight AP
•
Two Cisco 2000 Series WLCs that run firmware 3.2.78.0
•
Microsoft Windows Server 2003 Enterprise DHCP server
•