Cluster interfaces

You can configure data interfaces as either Spanned EtherChannels or as individual interfaces. All data interfaces in the cluster must be one type only. You cannot configure Ethernet 1/1 as a Spanned EtherChannel and configure Ethernet 1/2 as an Individual interface within the same cluster, for example.

For Spanned EtherChannels: You can use regular firewall interfaces or IPS-only interfaces (inline sets or passive interfaces). For Individual interfaces: IPS-only interfaces are not supported.

Each unit must also dedicate at least one hardware interface as the cluster control link.