Polycom 3725-77601-001H manual Redundant Configuration System Administration

Polycom CMA System Redundancy

•The redundant server becomes the active server. Its services start in an order designed to prevent the new active server from being flooded with requests from endpoints during startup.

A system failover usually takes approximately 5 minutes, but some system settings affect how rapidly a redundant system returns to full functionality. The gatekeeper Registration Refresh period affects how quickly endpoints re-register with the redundant server after a failover. And if Deny calls to/from unregistered endpoints is checked, the gatekeeper rejects calls from endpoints that have not re-registered with the redundant server after a failover. Therefore, in a redundant system configuration, use a short refresh period (30 seconds) unless you have many endpoints or a large amount of network traffic.

Once a failover to a redundant server occurs, the redundant server manages all system operations until an administrator switches back to the original primary server via the Switch Server Roles function in the CMA system user interface.

Notes

•The CMA system does not automatically switch to the primary server when the primary server becomes available. An administrator must Switch Server Roles.

•A failover or system restart initiates an encryption routine that changes the private key for a redundant system. Therefore, after a failover or system restart, schedulers who use one of the scheduling plug-ins will be prompted to re-enter their login settings to access the system.

Redundant Configuration System Administration

Because the two servers share the external CMA system database, most of their configuration information is shared. However, certain information is not stored in the database, so an administrator must manually synchronize this information. This includes:

•Basic network settings such as IP, default gateway, and DNS settings

•External database information

•Time and external NTP server settings

•The current system log level

•Custom CMA system logo--upload the same logo to both servers

•Software Update profiles for scheduled software updates--upload the same software package to both servers

Whenever you change information in one of these sections on one server you should also change it on the other server.

Licensing and upgrading a redundant system is slightly more complex. The primary and redundant server required different licenses.

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