User's Guide

Table Of Contents
Availability and session availability
hwc_fastfailover.fm
Session availability
9034530-02, March 2010
396 HiPath Wireless Controller, Access Points and Convergence Software V7.11, User Guide
The primary and secondary HiPath Wireless Controllers are properly
configured in ‘availability’ mode. For more information, see Section 7.1,
“Availability”, on page 381.
The pair of HiPath Wireless Controllers in availability mode is formed by one
of the following combinations:
C5110 and C5110
C4110 and C4110
C2400 and C2400
C20N and C20N
C20 and C20
CRBT8110 and CRBT8110
CRBT8210 and CRBT8210
C5110 and C2400
C2400 and C20
C2400 and C20N
C20N and C20
CRBT8110 and CRBT8210
Both the primary and secondary HiPath Wireless Controllers are running the
most recent HiPath Wireless Convergence Software releases.
A network connection exists between the two HiPath Wireless Controllers.
The Wireless APs are operating in ‘availability’ mode.
The deployment is designed in such a way that the service provided by the
Wireless APs is not dependent on which HiPath Wireless Controller the APs
associate with. For example, the fast failover feature will not support the
deployment in which the two HiPath Wireless Controllers in availability mode
are connected via a WAN link.
Both the primary and secondary HiPath Wireless Controllers have equivalent
upstream access to the servers on which they depend. For example, both the
controllers must have access to the same RADIUS and DHCP servers.
The users (client devices) that use DHCP must obtain their addresses from a
DHCP Server that is external to the HiPath Wireless Controller.