FC ports

The following information is shown for each FC port:

Acknowledged

Shows whether a user marked the status of a port as acknowledged. An acknowledged status indicates that the status was reviewed and is either resolved or can be ignored. An acknowledged status is not used when the status of related, higher-level resources is determined.

For example, if a port has an error status, the related storage system also shows an error condition. If the error status of the port is acknowledged, it changes to Error-Acknowledged. This acknowledged status is then treated as normal, and is used in evaluating the overall condition of the storage system. In this case, if the other internal resources of the storage system are also normal, the storage system condition is considered normal.

Advertised B-B Credit

The FC_Port Buffer-to-Buffer Credit as a number value. This value is the advertised buffer-to-buffer credit for the Fx_Port or Nx_Port for which diagnostic parameters are being processed. This column is shown for DS8000 storage systems only.

Attached Port B-B Credit

The attached FC_Port Buffer-to-Buffer Credit as a number value. This value is the advertised buffer-to-buffer credit that is received from the directly attached Fx_Port or Nx_Port. This column is shown for DS8000 storage systems only.

Attached WWPN

The worldwide port name of the attached port. This column is shown for DS8000 storage systems only.

FEC status

The forward error correction (FEC) status. This column is shown for DS8000 storage systems only.

Last SFP Read time

The last time that the SFP was read. This column is shown for DS8000 storage systems only.

Location

For DS8000, a code that represents the physical location of a port within the hardware of a storage system. The location information is shown in the following format:

frame - I/O enclosure - host adapter - port

For example, the location value R1-I4-C5-T3 corresponds to frame 1, I/O enclosure 4, host adapter 5, and port 3.

The value for I/O enclosure is the number of the enclosure in the frame.

For more detailed information about the location of the port, view the following columns:

Frame

The DS8000 hardware unit where the port is located.

I/O Enclosure

The number of the I/O enclosure in the storage system. This value might be different from the I/O enclosure value for Location if the DS8000 has expansion frames.

Host Adapter

The DS8000 physical subunit that contains the port and attaches to one of more host I/O interfaces.

Operating speed

The current port operating speed, if it is set. If the link it not active, Inactive is displayed. This column is shown for DS8000 storage systems only.

Protocol

For DS8000, the Fibre Channel communication protocol that is used by the port, which determines the type of traffic that is transmitted. Each port on a DS8000 uses either the SCSI FCP (SCSI Fibre Channel Protocol) or FICON® (Fibre Connection) protocol.

The value Unknown is shown if the DS8000 is not probed.

Rx Power

The Rx power of the port. This column is shown for DS8000 storage systems only.

Security

The current security setting of an I/O port. This column is shown for DS8000 storage systems only.

Speed (Gbps)

The negotiated speed of a port.

Status

The status of a Fibre Channel port. Statuses include Normal, Warning, Error, and Unknown. Use the status to determine the condition of a port, and if any actions must be taken. For example, if a port has an Error status, take immediate action to correct the problem.

Transceiver Supply Voltage

The internally measured supply voltage of the transceiver. This column is shown for DS8000 storage systems only.

Transceiver Temperature

The internally measured temperature of the transceiver. This column is shown for DS8000 storage systems only.

Type

The port type. This column is shown for DS8000 storage systems only.

Tx Power

The Tx power of the port. This column is shown for DS8000 storage systems only.

WWPN

The World Wide Port Name (WWPN) of a port. A WWPN is the unique 64-bit identifier for a port in a Fibre Channel fabric.