This section describes the two methods to upgrade the SBC 5000 series application software.
Before performing an upgrade, save the existing configuration as described in Saving the SBC 5000 Series Configuration.
As of release 4.0.0, the default number of simultaneous sessions per user is reduced to 2. If the number of open sessions exceed the configured limit, the login request is refused. A security event is logged if the user does not have any more active sessions left, and the login request is rejected with an appropriate error. For more information, see Accounts and Security Management and Adding Users to SBC 5000 Series for guidance.