HA Node Parameter Configuration

To configure general HA node parameters using the ACLI:

1. In Superuser mode, type configure terminal and press Enter.

   ORACLE# configure terminal

2. Type system and press Enter to access the system-level configuration elements.

   ORACLE(configure)# system

3. Type redundancy and press Enter.

   ORACLE(system)# redundancy

   From here, you configure basic HA node parameters. To view all basic HA node parameters, enter a ? at the system prompt.

4. state—Leave this parameter set to enabled for HA to work. To stop HA operation, set this parameter to disabled. The default value is enabled. The valid values are:

   • enabled | disabled

5. log-level—Set the log level you want to use for the HA system process. The value you set in this field overrides any log level value you set for the entire Oracle® Enterprise Session Border Controller in the system configuration process log level parameter. The default value is INFO which allows you to receive a moderate amount of detail. The valid values are:

   • emergency | critical | major | minor | warning | notice | info | trace | debug | detail

6. health-threshold—Enter a value between 0 and 100 to set the health score at which the Oracle® Enterprise Session Border Controllers in the HA node gracefully exchange active-standby roles. The default value is 75. The valid range is:

   • Minimum—1

   • Maximum—100

     For example, if this field is set to 75 and the active Oracle® Enterprise Session Border Controller’s health score falls below that point, the standby Oracle® Enterprise Session Border Controller will take over the active role. However, Oracle® Enterprise Session Border Controller will only take over the active role if its own health score is 75 or better.

7. emergency-threshold—Enter the health score for the standby Oracle® Enterprise Session Border Controller to become active immediately. The default value is 50. The valid range is:

   • Minimum—0

   • Maximum—100

     If the standby Oracle® Enterprise Session Border Controller is initializing and the active Oracle® Enterprise Session Border Controller’s health score is below the health threshold, the standby Oracle® Enterprise Session Border Controller will take the active role and there will be a graceful switchover. If the active Oracle® Enterprise Session Border Controller’s health score is below the emergency threshold, then the switchover will be immediate.

     If the standby Oracle® Enterprise Session Border Controller has a health score below the emergency threshold and the active Oracle® Enterprise Session Border Controlleris unhealthy, the active Oracle® Enterprise Session Border Controller will not give up its active role.

8. advertisement-time—Enter the number of milliseconds to set how often Oracle® Enterprise Session Border Controllers in an HA node inform each other of their health scores.

   We recommend you leave this parameter set to it’s default, 500. The valid range is:

   • Minimum—50

   • Maximum—999999999

9. percent-drift—Enter the percentage of the advertisement time that you want one member of the HA node to wait before considering the other member to be out of service. For the standby Oracle® Enterprise Session Border Controller, this is the time it will wait before taking the active role in the HA node. The default value is 210. The valid range is:

   • Minimum—100

   • Maximum—65535

10. initial-time—Enter the number of milliseconds to set the longest amount of time the Oracle® Enterprise Session Border Controller will wait at boot time to change its state from initial to either becoming active or becoming standby. The default value is 1250. The valid range is:

    • Minimum—5

    • Maximum—999999999

11. becoming-standby-time—Enter the number of milliseconds the Oracle® Enterprise Session Border Controller waits before becoming standby, allowing time for synchronization. If it is not fully synchronized within this time, it will be declared out of service.

    We recommend that you do not set this parameter below 45000. If a large configuration is being processed, we recommend setting this parameter to 180000 to allow enough time for configuration checkpointing. The default value is 45000. The valid range is:

    • Minimum—5

    • Maximum—999999999

12. becoming-active-time—Enter the number of milliseconds that the standby Oracle® Enterprise Session Border Controller takes to become active in the event that the active Oracle® Enterprise Session Border Controller fails or has an intolerably decreased health score. The default value is 100. The valid range is:

    • Minimum—5

    • Maximum—999999999