Live Software Upgrade (LSWU) allows you to upgrade the SBC Core application in an HA environment without dropping active calls or interrupting service. This upgrade approach is recommended for High Availability SBC systems.

For information on average call rates and capacities during an LSWU, refer to LSWU Performance Metrics.

If you are upgrading from any version prior to 7.1.0, you must have no sessions in the /var/log/sonus/evlog/ or /var/log/sonus/evlog/evlog/ directories. 

(This Note does not apply if you are upgrading from 6.2.2, 7.1.0 or later versions.)

 

 

Refer to System Administration - Software Install-Upgrade for LSWU instructions using the SBC EMA.

 

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