> # FC Interfaces General

> The following variables are not supported by all interfaces: PortVsan, Port Mode Admin and Oper, Admin Speed, and FailureCause

> .

> Field | Description
> --- | ---
> Description | Alias name for the interface as specified by a network manager.
> FCID | The Fibre Channel identifier.
> Mode Admin | The port mode configured by the user. If the user configured the port as auto, then the port initialization scheme determines the mode of the port. Modes are: E Port - In expansion port mode, an interface functions as a fabric expansion port. This port may be connected to another E port to create an Inter-Switch Link (ISL) between two switches. E ports carry frames between switches for configuration and fabric management. F Port - In fabric port mode, an interface functions as a fabric port. This port may be connected to a peripheral device (host or disk) operating as an N port. FL Port - In fabric loop port mode, an interface functions as a fabric loop port. This port may be connected to one or more NL ports (including FL ports in other switches) to form a public arbitrated loop. TE Port - In trunking E port mode, an interface functions as a trunking expansion port. It may be connected to another TE port to create an Extended ISL (EISL) between two switches. TE ports are specific to Cisco MDS 9000 family switches. Fx Port- Interfaces configured as Fx ports are allowed to operate in either F port or FL port mode. The Fx port mode is determined during interface initialization depending on the attached N port or NL port. This administrative configuration disallows interfaces to operate in any other mode--for example, preventing an interface to connect to another switch.
> Mode Oper | The current operating mode of the port.
> Speed | The port speed configured by the user.
> Status Admin | The desired state of the interface.
> Status Oper | The current operational state of the interface.
> FailureCause | The cause of current operational state of the port.
> Hardware | The hardware detected state of the port.
> LastChange | When the interface entered its current operational state. If the current state was entered prior to the last re-initialization of the local network management subsystem, then this value is N/A.

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