Configuration while HA is Operational
When the devices are operating in HA state, subsequent configuration is as follows:
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All configuration, including HA, is done on the active device only. |
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Non-HA configuration on the active device is automatically updated on the redundant device (through the Maintenance interface). |
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HA-related configuration on the active device is automatically updated on the redundant device: |
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Modified Maintenance interface address of the active device: The address is set as the new 'HA Remote Address' value on the redundant device. |
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Modified 'HA Remote Address' value on the active device: The address is set as the new Maintenance interface address on the redundant device (requires a device restart). |
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Modifications on all other Maintenance interface parameters (e.g., Default Gateway and VLAN ID): updated to the Maintenance interface on the redundant device. |
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'Preempt Mode' parameter. |
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'Preempt Priority' parameter is set for the active device. |
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Modified 'HA Remote Preempt Priority' value is set for the redundant device. |
If the HA system is already in HA Preempt mode and you want to change the priority of the device, to ensure that system service is maintained and traffic is not disrupted, it is recommended to set the higher priority to the redundant device and then restart it. After it synchronizes with the active device, it initiates a switchover and becomes the new active device (the former active device restarts and becomes the new redundant device).