Your system and SS7 networking must be properly configured prior to the upgrade (see following table).
System Requirements Prior to a Software Upgrade
| Item | Description |
|---|---|
| Routesets | Routesets within the active system must specify the routes that are unaffected by the outage during the software upgrade. |
| Linksets | There are enough links to manage the traffic load from a specific node to each STP in the mated pair configuration. Locations that have linksets to a single STP may experience an outage. |
| Load Levels | Load levels on a normally operating SS7 system should not exceed 0.4 Erlang; therefore, during the failover scenario that is required to perform a software upgrade, the active system in the redundant configuration is not carrying more than 0.8 Erlang. Traffic should be diverted to one STP in the mated pair configuration during the software upgrade. It is assumed that your system is capable of handling the increased traffic on this STP. To make sure that your system is capable of managing the increased traffic on the active system, monitor the following:
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