A network interface card (NIC) physically connects a node
to a network.
When configured with a single NIC per network, the NIC
becomes a potential single point of failure. To remedy this problem,
configure a node with at least two NICs for each network to which
it connects. In the following figure, each cluster node has two connections
to each network.Figure 1. Dual-network and dual-NIC configuration
Note: Hot replacement of the dual-port Ethernet
adapter used to configure two interfaces for one PowerHA® SystemMirror® IP network
is currently not supported.
