The NIC agent monitors the configured NIC. If a network link fails, or if a problem arises with the NIC, the resource is marked FAULTED. You can use the agent to make a single IP address on a single adapter highly available. This resource's Operation value is None.
Some NICs maintain their connection status in a hardware register. For NICs that maintain their connection status, the agent uses ethtool and MII to determine the status of the NIC resource. For NICs that do not maintain their connection status, the agent uses a ping or a broadcast to determine the status of the resource.
For the NIC and IP agents, VCS supports Linux bonded interfaces.