Configuring the xHA backbone for secure and reliable data transfer between xHA nodes.
For a secure and reliable high availability failover, BlueCat strongly recommends a hardwired xHA backbone connection for data transfer between the Active and Passive nodes.
To use the xHA backbone:
Connect an Ethernet cable to the xHA/eth1 ports on each DNS/DHCP Server appliance, as shown below.
Note: For physical appliances, you can make a hardwired connection between the xHA interface (eth1) of each node. For a pair of virtual machines, you can configure the xHA backbone (eth1) when adding a server to Address Manager or when creating the xHA pair.
Log in to the Address Manager user interface, and add the DNS/DHCP Servers to Address Manager. You can
configure the IP address for the xHA backbone connection when adding a server,
or when creating an xHA pair.
Note: To locate the xHA/eth1 ports on your DNS/DHCP Server appliances, refer to the installation posters that came with your appliances.Attention: Make sure to configure the IP address of the xHA interface (eth1) on a different subnet than any other interface. This is the recommended best practice for direct xHA backbone connections and connections over switches or wide area networks (WAN). This isn't mandatory if you're using a direct connection to the eth1 interface on each DNS/DHCP Server. For information and help on running xHA with switches, contact BlueCat Customer Care. For details on creating an xHA pair in Address Manager, refer to Managing xHA.