Step 2: Configure the Second Device
Once you have configured the first device for HA, you can configure the second device for HA. As the configuration of the second device is similar to the first device, the following procedure briefly describes each step. For detailed configuration such as the path to the Web configuration pages, refer to the section on configuring the first device (Step 1: Configure the First Device).
During this stage, ensure that the first device is powered off or disconnected from the network.
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➢
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To configure the second device for HA: |
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1.
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Connect to the device in the same way as you did with the first device. |
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2.
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Configure the same OAMP, Media, and Control interfaces as configured for the first device. |
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3.
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Configure a Maintenance interface for this device. The IP address must be different to that configured for the Maintenance interface of the first device. The Maintenance interfaces of the devices must be in the same subnet. |
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4.
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Configure the same Ethernet Groups and VLAN IDs of the network interfaces as configured for the first device. |
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5.
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Configure the same Ethernet port Tx / Rx mode of the Ethernet Group used by the Maintenance interface as configured for the first device. |
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6.
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Configure HA parameters in the HA Settings page: |
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a.
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In the 'HA Remote Address' field, enter the Maintenance IP address of the first device. |
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b.
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(Optional) Enable the HA Preempt feature by configuring the 'Preempt Mode' parameter to Enable, and then setting the priority level of the device in the 'Preempt Priority' field. Make sure that you configure different priority levels for the two devices. Typically, you would configure the active device with a higher priority level (number) than the redundant device. The only factor that influences the configuration is which device has the greater number; the actual number is not important. For example, configuring the active with 5 and redundant with 4, or active with 9 and redundant with 2 both assign highest priority to the active device. Configuring the level to 10 doesn't cause a switchover upon Ethernet connectivity loss. For more information on the HA Preempt feature, see Device Switchover upon Failure. |
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7.
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Save configuration to flash without a restart. |
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8.
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Power down the device. |