Upgrading SIP applications

Follow these steps to upgrade SIP applications.

Use the following application upgrade procedure to install a new version of a previously installed application without any outage.

1. Install version 1 of the application in cluster 1.

2. Create cluster 2.

3. Set cluster 1 as the default cluster.

4. Install version 2 of the application in cluster 2.

5. Change the default cluster at proxy to cluster 2.

6. To shut down Version 1, monitor PMI and watch for the application session for this application to come to zero. When it is at zero or a level you consider okay to lose, stop the application.

Results

New calls will be routed to cluster 2. Old calls will continue to be routed to cluster 1.

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