Interface Types

Physical interfaces, VLAN subinterfaces, and EtherChannel interfaces can be one of the following types:

• Data—Use for regular data or the failover link. Data interfaces cannot be shared between instances, and instances cannot communicate over the backplane to other instances. For traffic on Data interfaces, all traffic must exit the chassis on one interface and return on another interface to reach another instance. You can add VLAN subinterfaces to a data interface to provide separate failover links per High Availability pair.

• Data-sharing—Use for regular data. These data interfaces can be shared by one or more instances. Each instance can communicate over the backplane with all other instances that share this interface. Shared interfaces can affect the number of instances you can deploy. Shared interfaces are not supported for bridge group member interfaces (in transparent mode or routed mode), inline sets, passive interfaces, or failover links.