HP-UX AAA Server A.08.02 Administrator's Guide

present on a single or multiple hosts. Each group is associated with a group name, and each HP-UX
AAA Server within a group is associated with a server name.
Typically, groups contain cloned HP-UX AAA Servers or administration-related HP-UX AAA Servers,
although this is not a restriction. In a group with cloned HP-UX AAA Servers, each HP-UX AAA
Server is a clone of the primary HP-UX AAA Server in the group. Groups with cloned HP-UX AAA
Servers are created while deploying a scalable and highly available solution. In a group with
administration-related servers, each HP-UX AAA Server performs functionalities, such as,
authentication, accounting, and dynamic authorization. Therefore, the administration tasks such
as, starting, stopping and reloading HP-UX AAA Servers in a group can be done with ease.
NOTE: At a given time, you can administer servers belonging to a single group only using HP-UX
AAA Server Manager.
HP-UX AAA Server Attributes
The HP-UX AAA Servers running on a host are independent of each other. Each server is identified
by a server name, and the IP address or the name of the host on which the server is running. Each
server must be assigned a set of server attributes, such as, Listen IP Address, Authentication Port
Number, Accounting Port Number, Dynamic Authorization Port Number, Configuration Directory
Path, and Log File Directory Path. Every combination of the Listen IP Address and any of the port
numbers such as Authentication, Accounting, and Dynamic Authorization port numbers must be
unique across all the servers managed by the HP-UX AAA Server Manager.
HP-UX AAA Server Deployment for Scalability and High-Availability
Figure 53 illustrates multiple HP-UX AAA Servers on a host (Host 1) for greater scalability and
clones of servers on the same and different hosts (Host 2 and Host 3) for high-availability.
Figure 53 HP-UX AAA Server Deployment for Scalability and High-Availability
In Figure 53, the HP-UX AAA Server Manager manages multiple HP-UX AAA Servers on three
remote hosts (Host 1, Host 2, and Host 3). Each remote host is running more than one HP-UX AAA
198 Configuring HP-UX AAA Server for Scalability and High-Availability