Before you create an xHA cluster, make sure to complete these prerequisites:
- You must have at least two connected and managed Micetro DDS appliances in the configuration running software version 9.6.x or greater.
- Micetro DDS appliances must be either two physical appliances or two virtual machines. Mixed xHA pairs of appliance and VM are NOT supported.
- Both Micetro DDS appliances must be of the same profile, such as two BlueCat GEN4-2000 profiles.
- Both Micetro DDS appliances must be at the same software version before creating an xHA cluster.
- Both Micetro DDS appliances must be configured with NTP before creating an xHA cluster, to ensure that the xHA setup process correctly configures the Micetro DDS appliances.
- In order to create an xHA cluster with an active node on which a dedicated management interface is enabled, the dedicated management interface on the passive node must be enabled.
- The active and passive nodes must be on the same network.
- xHA with IPv4 only: No IPv6 addresses may be present on either the active or passive nodes.
- xHA with IPv6 only: No IPv4 addresses may be present on either the active or passive nodes.
- Remove any old certificates and create identical time settings on both appliances.
Attention:
- If you are currently using the xHA/eth1 ports for another purpose, you can reset and then reconfigure them for xHA communication, but you cannot use the eth1 ports for xHA communication and for their previous purpose.
- If you are running an xHA cluster with xHA backbone communication configured over switches or WAN, make sure to configure the IP address of eth1 on a different subnet than eth0 and eth2.
- Do not try to configure half-duplex communication. If you try to configure half-duplex, the MDDS appliance prevents you from saving the setting and an error message is displayed. For more information about duplex settings, contact https://care.bluecatnetworks.com.