A Virtual Interface enables the combination
of two physical ports into one logical interface. Virtual Interfaces
provide increased redundancy in areas of the network where uptime
is critical and additional design flexibility is needed.
A Virtual Interface can contain a maximum of two member interfaces
and is used to ensure redundant physical connectivity from a device
to one or more switches, routers, or firewalls. For example, two
controller ports may be connected to two Layer 2 switches for physical
redundancy of controller port connectivity.
In order for a port to be an eligible Virtual Interface member
it must be a:
Physical port—Cannot be a bypass pair nor a logical interface.
Similar port type—For example, a controller port can only be
added to a virtual interface with another controller port.
Default configuration—The interface cannot have any type of
IP, sub-interface, used-for, circuit label, nor PPPoE configuration.
A virtual interface can be created, updated, or deleted. It displays
as Down if both the member interfaces are operationally down, and
Up if at least one of the member interfaces is operationally up.