Understanding interfaces in an HA pair You can configure three types of interfaces on nodes in an HA pair . What the networking interfaces do When a node in an HA pair fails, the surviving node must be able to assume the identity of the failed node on the network. Networking interfaces allow individual nodes in the HA pair to maintain communication with the network if the partner fails. Shared, dedicated, and standby interfaces These different types of interfaces have different roles in normal and takeover mode. Interface roles in normal and takeover modes You can configure shared, dedicated, and standby interfaces in an HA pair . Each type has a different role in normal and takeover mode. Takeover configuration with shared interfaces You can configure two NICs, one on each node, to provide two shared interfaces to each node. Takeover configuration with dedicated and standby interfaces With two NICs on each node, one can provide a dedicated interface and the other can act as a standby interface. Interface types and configurations This table lists the configurations supported by each type of interface in an HA pair . IPv6 considerations in an HA pair When enabled, IPv6 provides features such as address autoconfiguration. Using these IPv6 features requires an understanding of how these features work with the HA pair functionality. Parent topic: Configuring network interfaces for HA pairs
