HP-UX AAA Server A.08.00.01 Administrator's Guide

Server S2 to ensure load is evenly balanced. Therefore, client requests are processed
faster to provide desired optimum performance.
Group B is a group with a set of four HP-UX AAA Servers, S1 and S2 running on Host
2, and S3 and S4 running on Host 3. HP-UX AAA Servers S1 and S3 are cloned servers
providing authentication services and S2 and S4 are cloned servers providing accounting
services. If an HP-UX AAA Server (S1/S2) crashes, the cloned server (S3/S4) can service
the clients' requests, thereby ensuring high-availability of the solution. If Host 2 crashes,
the HP-UX AAA Servers (S1 and S2) are not available to service the client requests, but
the cloned servers (S3 and S4) can service the client requests, thereby ensuring
high-availability of the solution.
Group C is a group with a set of three HP-UX AAA Servers, S1, S2 and S3 running on
Host 2 and Host 3. HP-UX AAA Server S1 provides authentication services and S2
provides accounting services on Host 3, while S3 provides both the authentication and
accounting services on Host 2. S1 and S2 are the primary servers running on Host 3
addressing scalability and S3 is a hybrid of S1 and S2 providing a backup to address
high-availability.
NOTE: In the given example, only one port number is used per HP-UX AAA server.
However, multiple port numbers such as authentication, accounting, dynamic
authorization ports, can be used for each HP-UX AAA Server.
Managing Multiple HP-UX AAA Servers For Scalability and High-Availability
This section describes how to manage multiple HP-UX AAA Servers. It discusses the
following topics:
• “Administering HP-UX AAA Servers Using HP-UX AAA Server Manager”
(page 271)
• “Administering HP-UX AAA Servers Using HP-UX AAA Server Admin Tool
(Command Line)” (page 282)
Administering HP-UX AAA Servers Using HP-UX AAA Server Manager
This section describes how to configure servers and groups using the HP-UX AAA
Server Manager.
The Default (Server Connections) group, including a server, called localhost, is present
by default. This group is compatible with the Server Connections present in releases
earlier than HP-UX AAA Server A.08.00.01. All Server Connections managed by the
HP-UX AAA Server Manager in the earlier versions of HP-UX AAA Server are moved
to the Default (Server Connections) group during migration. If you do not want to
create new groups for scalability and high-availability, you can continue to create
HP-UX AAA Servers belonging to this group.
Managing Multiple HP-UX AAA Servers For Scalability and High-Availability 271