Wireless/Redundant Edge Services xl Module Management and Configuration Guide WS.02.xx and greater

10-2
Redundancy Groups
High Availability for Wireless Services
High Availability for Wireless Services
For many companies, wireless access has become as critical to their business
as traditional wired access. Recognizing the importance of wireless access,
ProCurve Networking has designed its wireless services with high availability
in mind.
To protect the availability of your company’s wireless services, purchase
multiple Wireless Edge Services xl Modules and place them in a redundancy
group. ProCurve Networking provides two types of modules, both of which
can be members of a redundancy group:
■ Wireless Edge Services xl Module (J9001A)
■ Redundant Wireless Services xl Module (J9003A)
In this chapter, a Wireless Edge Services xl Module is called a primary module,
and a Redundant Wireless Services xl Module is called a redundant module.
The section below describes the particular features of a Redundant Wireless
Services xl Module. The next section, “Redundancy Group” on page 10-3,
explains how both types of modules work together in a redundancy group.
Redundant Wireless Services xl Module
To provide failover capabilities for the ProCurve Wireless Edge Services xl
Module (J9001A), you can purchase a Redundant Wireless Services xl
Module (J9003A).
The Redundant Wireless Services xl Module provides the same functionality
as the Wireless Edge Services xl Module, with one exception: the redundant
module does not have any radio port (RP) licenses. On its own, the redundant
module cannot adopt any RPs.
When combined with one or more Wireless Edge Services xl Modules in a
redundancy group, however, the Redundant Wireless Services xl Module can
adopt RPs under certain circumstances. Primarily, the redundant module is
designed to adopt RPs if one of the primary Wireless Edge Services xl Modules
becomes unavailable for any reason. However, you can also configure the
Redundant Wireless Services xl to use a primary module’s licenses to adopt
RPs at any time. (For more information about RP adoption in a redundancy
group, see “Adopting RPs” on page 10-5.)