Managing communication interfaces in PowerHA SystemMirrorEdit online This section describes the options under the System Management (C-SPOC) > Communication Interfaces SMIT menu. Configuring network interfaces to the operating system on a nodeYou can configure network interfaces to AIX® without leaving PowerHA® SystemMirror® SMIT, by using the System Management (C-SPOC) > Communication Interfaces SMIT path.Updating PowerHA SystemMirror network interfaces with AIX settingsWhen you define network interfaces by entering or selecting a PowerHA® SystemMirror® IP label or device, PowerHA® SystemMirror® discovers the associated AIX® network interface name. PowerHA® SystemMirror® expects this relationship to remain unchanged. If you change the IP Label/Address associated with the AIX® network interface after configuring and synchronizing the cluster, PowerHA® SystemMirror® will not function correctly.Swapping IP addresses between network interfaces dynamicallyAs a systems administrator, you may at some point experience a problem with a network interface card on one of the PowerHA® SystemMirror® cluster nodes. If this occurs, you can use the dynamic communications interface swap feature to swap the IP address of an active service network interface with the IP address of another active, available network interface on the same node and network. Cluster services do not have to be stopped to perform the swap.Replacing a PCI hot-pluggable network interface cardThis topic takes you through the process of replacing a PCI hot plug network interface card.Parent topic: Managing the cluster topology