> # Reason Codes

> Reason codes are dependent on the operational state of the interface as described in Table 12-3.

> Table 12-3 Reason Codes for Interface States
> Administrative Configuration | Operational Status | Reason Code
> --- | --- | ---
> Up | Up | None.
> Down | Down | Administratively down—If you administratively configure an interface as down, you disable the interface. No traffic is received or transmitted.
> Up | Down | See Table 12-4.

> Note Only some of the reason codes are listed in Table 12-4.

> If the administrative state is up and the operational state is down, the reason code differs based on the nonoperational reason code as described in Table 12-4.

> Table 12-4 Reason Codes for Nonoperational States
> Reason Code (long version) | Description | Applicable Modes
> --- | --- | ---
> Link failure or not connected | The physical layer link is not operational. | All
> SFP not present | The small form-factor pluggable (SFP) hardware is not plugged in.
> Initializing | The physical layer link is operational and the protocol initialization is in progress.
> Reconfigure fabric in progress | The fabric is currently being reconfigured.
> Offline | The Cisco NX-OS software waits for the specified R_A_TOV time before retrying initialization.
> Inactive | The interface VSAN is deleted or is in a suspended state. To make the interface operational, assign that port to a configured and active VSAN.
> Hardware failure | A hardware failure is detected.
> Error disabled | Error conditions require administrative attention. Interfaces may be error-disabled for various reasons. For example: Configuration failure. Incompatible buffer-to-buffer credit configuration. To make the interface operational, you must first fix the error conditions causing this state; and next, administratively shut down or enable the interface.
> FC redirect failure | A port is isolated because a Fibre Channel redirect is unable to program routes.
> No port activation license available | A port is not active because it does not have a port license.
> SDM failure | A port is isolated because SDM is unable to program routes.
> Isolation due to ELP failure | The port negotiation failed. | Only E ports and TE ports
> Isolation due to ESC failure | The port negotiation failed.
> Isolation due to domain overlap | The Fibre Channel domains (fcdomain) overlap.
> Isolation due to domain ID assignment failure | The assigned domain ID is not valid.
> Isolation due to the other side of the link E port isolated | The E port at the other end of the link is isolated.
> Isolation due to invalid fabric reconfiguration | The port is isolated due to fabric reconfiguration.
> Isolation due to domain manager disabled | The fcdomain feature is disabled.
> Isolation due to zone merge failure | The zone merge operation failed.
> Isolation due to VSAN mismatch | The VSANs at both ends of an ISL are different.
> Nonparticipating | FL ports cannot participate in loop operations. It may happen if more than one FL port exists in the same loop, in which case all but one FL port in that loop automatically enters nonparticipating mode. | Only FL ports and TL ports
> PortChannel administratively down | The interfaces belonging to the PortChannel are down. | Only PortChannel interfaces
> Suspended due to incompatible speed | The interfaces belonging to the PortChannel have incompatible speeds.
> Suspended due to incompatible mode | The interfaces belonging to the PortChannel have incompatible modes.
> Suspended due to incompatible remote switch WWN | An improper connection is detected. All interfaces in a PortChannel must be connected to the same pair of switches.

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