display interface fc

Current state

Physical link state of the interface:

• Administratively DOWN—The interface has been shut down by using the shutdown command.

• DOWN—The interface is administratively up, but its physical state is down (possibly because no physical link exists or the link has failed).

• UP—The interface is both administratively and physically up.

Line protocol state

Data link layer state of the interface. The state is determined through automatic parameter negotiation at the data link layer.

• UP—The data link layer protocol is up.

• DOWN—The data link layer protocol is down.

Description

Description of the interface.

Bandwidth

Expected bandwidth of the interface.

Maximum Transmit Unit

MTU of the interface.

4000Mbps-speed mode

The interface is operating at 4000 Mbps..

Internet protocol processing: Disabled

The interface is not assigned an IP address and cannot process IP packets.

Fill word

Fill word mode of the interface:

• idle-idle.

• idle-arbff.

FC mode

Mode of the interface.

state

Operating mode of the interface through negotiation.

Transmit B2B Credit

Buffer-to-buffer credit (BB_Credit) value of the local end.

This field is displayed only after the link comes up.

Receive B2B Credit

BB_Credit value of the remote end.

This field is displayed only after the link comes up.

Support the VSAN Protocol

The interface supports the VSAN protocol after negotiation.

This field is displayed only after the link comes up.

VSAN tagging mode

VSAN tagging mode of the interface after the Exchange Virtual Fabrics Protocol (EVFP) negotiation: Tagging or Non tagging.

This field is displayed only after the link comes up.

EVFP common VSAN

Common VSANs in up state through the EVFP negotiation.

This field is displayed only after the link comes up.

1Gbps-speed mode

The interface is operating at 1 Gbps. This field depends on your configuration and the link parameter negotiation result.

2Gbps-speed mode

The interface is operating at 2 Gbps. This field depends on your configuration and the link parameter negotiation result.

4Gbps-speed mode

The interface is operating at 4 Gbps. This field depends on your configuration and the link parameter negotiation result.

8Gbps-speed mode

The interface is operating at 8 Gbps. This field depends on your configuration and the link parameter negotiation result.

16Gbps-speed mode

The interface is operating at 16 Gbps. This field depends on your configuration and the link parameter negotiation result.

Unknown-speed mode

The speed of the interface is unknown because the speed negotiation fails or the interface is physically disconnected.

Link speed type is autonegotiation

The interface is configured with the speed auto command.

Link speed type is force link

The interface is manually configured with a speed (for example, 1000 Mbps) by using the speed command.

Flow-control is

This field depends on your configuration and the link parameter negotiation result.

Last link flapping

The amount of time that has elapsed since the most recent physical state change of the interface. This field displays Never if the interface has been physically down since device startup.

Last clearing of counters

Time when the interface statistics were last cleared by using the reset counters interface command. Never indicates that the interface statistics have never been cleared since device startup.

Peak input rate

Peak rate of inbound traffic in Bps, and the time when the peak inbound traffic rate occurred.

Peak output rate

Peak rate of outbound traffic in Bps, and the time when the peak outbound traffic rate occurred.

Last 300 second input: 0 packets/sec 0 bytes/sec 0%

Last 300 second output: 0 packets/sec 0 bytes/sec 0%

Average inbound or outbound traffic rate (in pps and Bps) in the last 300 seconds, and the ratio of the actual rate to the interface bandwidth.

A hyphen (-) indicates that the statistical item is not supported.

Input(total): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

The two fields on the first line represent the inbound traffic statistics (in packets and bytes) for the interface. All inbound normal packets, abnormal packets, and normal pause frames were counted.

The four fields on the second line represent:

• Number of inbound unicast packets.

• Number of inbound broadcasts.

• Number of inbound multicasts.

• Number of inbound pause frames.

A hyphen (-) indicates that the statistical item is not supported.

Input(normal): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

The two fields on the first line represent the inbound normal traffic and pause frame statistics (in packets and bytes) for the interface.

The four fields on the second line represent:

• Number of inbound normal unicast packets.

• Number of inbound normal broadcasts.

• Number of inbound normal multicasts.

• Number of inbound normal pause frames.

A hyphen (-) indicates that the statistical item is not supported.

input errors

Statistics of incoming error packets.

runts

Number of inbound frames meeting the following conditions:

• Shorter than 64 bytes.

• In correct format.

• Containing valid CRCs.

giants

Number of inbound giants. Giants refer to frames larger than the maximum frame length supported on the interface.

For an Ethernet interface that does not permit jumbo frames, the maximum frame length is as follows:

• 1518 bytes (without VLAN tags).

• 1522 bytes (with VLAN tags).

For an Ethernet interface that permits jumbo frames, the maximum Ethernet frame length is set when you configure jumbo frame support on the interface.

throttles

Number of inbound frames that had a non-integer number of bytes.

CRC

Total number of inbound frames that had a normal length, but contained CRC errors.

frame

Total number of inbound frames that contained CRC errors and a non-integer number of bytes.

overruns

Number of packets dropped because the input rate of the interface exceeded the queuing capability.

aborts

Total number of illegal inbound packets:

• Fragment frames—CRC error frames shorter than 64 bytes. The length (in bytes) can be an integral or non-integral value.

• Jabber frames—CRC error frames greater than the maximum frame length supported on the Ethernet interface (with an integral or non-integral length).

  • For an Ethernet interface that does not permit jumbo frames, the maximum frame length is 1518 bytes (without VLAN tags) or 1522 bytes (with VLAN tags).

  • For an Ethernet interface that permits jumbo frames, the maximum Ethernet frame length is set when you configure jumbo frame support on the interface.

• Symbol error frames—Frames that contained a minimum of one undefined symbol.

• Unknown operation code frames—Non-pause MAC control frames.

• Length error frames—Frames whose 802.3 length fields did not match the actual frame length (46 to 1500 bytes).

ignored

Number of inbound frames dropped because the receiving buffer of the port ran low.

parity errors

Total number of frames with parity errors.

Output(total): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

The two fields on the first line represent the outbound traffic statistics (in packets and bytes) for the interface. All outbound normal packets, abnormal packets, and normal pause frames were counted.

The four fields on the second line represent:

• Number of outbound unicast packets.

• Number of outbound broadcasts.

• Number of outbound multicasts.

• Number of outbound pause frames.

A hyphen (-) indicates that the statistical item is not supported.

Output(normal): 0 packets, 0 bytes

0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses

The two fields on the first line represent the outbound normal traffic and pause frame statistics (in packets and bytes) for the interface.

The four fields on the second line represent:

• Number of outbound normal unicast packets.

• Number of outbound normal broadcasts.

• Number of outbound normal multicasts.

• Number of outbound normal pause frames.

A hyphen (-) indicates that the statistical item is not supported.

output errors

Number of outbound packets with errors.

underruns

Number of packets dropped because the output rate of the interface exceeded the output queuing capability. This is a low-probability hardware anomaly.

buffer failures

Number of packets dropped because the transmitting buffer of the interface ran low.

aborts

Number of packets that failed to be transmitted, for example, because of Ethernet collisions.

deferred

Number of frames that the interface deferred to transmit because of detected collisions.

collisions

Number of frames that the interface stopped transmitting because Ethernet collisions were detected during transmission.

late collisions

Number of frames that the interface deferred to transmit after transmitting their first 512 bits because of detected collisions.

lost carrier

Number of carrier losses during transmission. This counter increases by one when a carrier is lost, and applies to serial WAN interfaces.

no carrier

Number of times that the interface failed to detect the carrier when attempting to send frames. This counter increases by one when an interface failed to detect the carrier, and applies to serial WAN interfaces.

Interface

Name of the interface.

VSAN

Access VSAN of the interface.

Admin Mode

User-configured interface mode:

• auto.

• E.

• F.

• NP.

Admin Trunk Mode

User-configured trunk mode for the interface:

• auto.

• on.

• off.

Oper Mode

Negotiated mode (link layer negotiation) in which the interface is operating:

• E—The interface is operating in E mode as an access port.

• F—The interface is operating in F mode as an access port.

• NP—The interface is operating in NP mode as an access port.

• TE—The interface is operating in E mode as a trunk port.

• TF—The interface is operating in F mode as a trunk port.

• TNP—The interface is operating in NP mode as a trunk port.

If negotiation is not initiated or fails, this field displays two hyphens (--).

Oper Speed

Negotiated rate in bps (physical layer negotiation) for the interface.

If negotiation is not initiated or fails, this field displays two hyphens (--).

Status

Negotiated state (link layer negotiation) for the interface:

• UP.

• DOWN.

SAN-Aggregation

FC aggregate group to which the interface belongs.

This field is empty when the interface is not assigned to an FC aggregation group.

Brief information on interface(s) under bridge mode

Brief information about Layer 2 interfaces.

Interface

Interface name.

Link

Physical link state of the interface:

• DOWN—The interface is physically down.

• ADM—The interface has been shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command.

• Stby—The interface is a backup interface in standby state. To see the primary interface, use the display interface-backup state command.

Cause

Cause for the physical link state of an interface to be DOWN:

• Not connected—No physical connection exists (possibly because the optical fiber is disconnected or faulty).

• Administratively—The interface has been manually shut down by using the shutdown command. To restore the physical state of the interface, use the undo shutdown command.