High-Availability Systems

For the management of the High Availability (HA) systems, use the acSysChassis MIB subtree (as in the above section). The acSysModuleTable gives the HA state of the system. This includes defining which modules are active and which are in standby mode (redundant). The table also enables to read some of the statuses of the redundant modules (such as SW version, HW version, temperature, license key list, etc.). Restarting the system, restarting the redundant module, and performing switchover are performed done using this table.

Complementing the above are the following alarm traps (as defined in the acBoard MIB):

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acHASystemFaultAlarm: the HA is faulty and therefore, there is no HA.

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acHASystemConfigMismatchAlarm: configuration to the modules in the HA system us uneven causing instability.

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acHASystemSwitchOverAlarm: a switchover from the active to the redundant module has occurred.