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To create an HA group, complete the following:

  1. From the Cloud Services Portal, click Manage -> IPAM/DHCP -> HA Groups -> Create HA Group.
  2. On the Create HA Group page, specify the following:
    • Name: Enter a name for the HA group.

    • Description: Enter additional information about the HA group.

    • ON-PREM HOSTS:

      • HA Configuration: Select one of the following:

        • Active / Active: Both on-prem hosts remain active.
        • Active / Passive: One on-prem host remains active and one remains passive. When the active on-prem host is down, the passive on-prem host takes over. 
        • Advanced Active / Passive: One on-prem host may be a part of multiple HA groups. When the active on-prem host is down, the passive on-prem host takes over. 

          Note

          When the active on-prem host goes down the active or passive on-prem host takes over as per your configuration. However, there may be a short delay in the switchover which may result in a gap in the lease allocation. 

      • Active On-Prem Host: Select an on-prem host from the column selector. This is the active on-prem host. 

      • Port: Displays the port number associated with the respective on-prem host.

      • Active On-Prem Host / Passive On-Prem Host: Select an on-premise host from the column selector. This is the Active On-Prem Host if the HA Configuration is Active/Active. This is the Passive On-Prem Host if the HA Configuration is Active/Passive

      • Port: Displays the port number associated with the respective on-prem host.

  3. Click Save & Close to save the details or click Cancel to exit.

Note

It is highly recommended to configure on-prem hosts in such a way that there is no communication failure between them. This is to avoid a situation where both on-prem hosts are attempting to serve the same subnet at the same time due to communication failure.

Note

It is highly recommended to adhere to the minimum hardware and platform requirements for on-prem hosts. DHCP version 3.1 or higher is required for DHCP clustering (Advanced Active-Passive). DHCP clustering will not be supported if the minimum requirements are not met. For more information, see Supported Platforms for On-Prem Hosts.

Status Changes in HA Peer

When an HA peer changes status (if a host is down), the status is shown on the On-Prem Hosts page. Error messages related to issues with the on-prem host are also displayed. For more information, see Viewing On-Prem Host Status

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