User's Manual

Polycom, Inc. 431
33
Polycom CMA System Redundancy
This chapter describes how to configure a redundant Polycom
®
Converged
Management Application™ (CMA®) system. It includes these topics:
• Polycom CMA 5000 System Redundancy Overview
• Implement a Redundant Polycom CMA 5000 System
• License a Redundant Polycom CMA System
• Failover to a Redundant Polycom CMA 5000 System Server
• Discontinue Redundancy on a Polycom CMA 5000 System Configuration
Polycom CMA 5000 System Redundancy Overview
A redundant CMA system configuration offers higher reliability and greater
call success by ensuring that a CMA system server is always available.
A redundant CMA system configuration requires two CMA system servers
and three IP addresses in the same subnet on the same network—one physical
IP address for each of the servers and one virtual IP address dedicated to
endpoint registration.
How Redundancy Works
Terminology is very important in understanding how redundancy works.
In a redundant configuration, one server is licensed as the primary server and
the other server is licensed as the redundant server. The primary server is
always the primary server and the redundant server is always the redundant
server.
In a redundant configuration, there is only one active server. The active server
is the server managing the system. It is the server running all of the CMA
system services. In a normal operational state, the active server is the primary
server. In a failover state, the active server is the redundant server.