Network interfaces
A network interface is the physical connection between a node and a network.
An PowerHA® SystemMirror® cluster can support multiple networks and point-to-point connections, as well as an RS232 serial line point-to-point connection. Each network will have one or more network interfaces on each cluster node.
Available network interface information
Clinfo maintains the following information about a network interface:
Cluster ID
The ID of the cluster to which this interface belongs.
Node name
The name of the node to which this interface is attached.
Active node ID
ID of the node where the address is currently active.
Interface name
An interface's name is the same as the name in the /etc/hosts file for the interface (that is, the name associated with the IP address of the host).
Interface ID
The network ID of the network to which this interface is connected.
Interface address
The IP address for the interface as defined in the /etc/hosts file.
Interface state
An interface can be in one of several defined states. The following values describe the state of a network interface:
| Item | Description |
|---|---|
| CLS_UP | The interface is up and running. |
| CLS_DOWN | The network interface or network is down. |
| CLS_INVALID | This interface is not defined for this node. |
Interface role
An interface can be in one of several defined roles. The following values describe the roles of a network interface:
| Item | Description |
|---|---|
| CL_INT_ROLE_INVALID | The network interface is invalid. |
| CL_INT_ROLE_SERVICE | The network interface is defined as a service interface. |
| CL_INT_ROLE_STANDBY | The network interface role is deprecated. |
| CL_INT_ROLE_BOOT | The network interface is defined as a service interface. |
| CL_INT_ROLE_SH_SERVICE | The network interface role is deprecated. |