Clients connect to the cluster through the public network interfaces. Each network adapter card can connect to one or more public networks, depending on whether the card has multiple hardware interfaces. You can set up nodes to include multiple public network interface cards configured so that multiple cards are active, and serve as failover backups for one another. If one of the adapters fails, Internet Protocol (IP) Network Multipathing software is called to fail over the defective interface to another adapter in the group.
No special hardware considerations relate to clustering for the public network interfaces.
See Chapter 4, Frequently Asked Questions for questions and answers about public networks.