display interface

Syntax

display interface [ bridge-aggregation ] [ brief [ down | description ] ] [ | { begin | exclude | include } regular-expression ]

display interface bridge-aggregation interface-number [ brief [ description ] ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

bridge-aggregation: Displays information about Layer 2 aggregate interfaces.

interface-number: Specifies an existing aggregate interface number. The value range for the interface-number argument is the set of all existing aggregate interface numbers.

brief: Displays brief interface information. If you do not specify this keyword, this command displays detailed interface information.

down: Displays information about interfaces in the DOWN state and the causes. If you do not specify this keyword, this command displays information about interfaces in all states.

description: Displays complete interface descriptions. If you do not specify this keyword, the command displays only the first 27 characters of each interface description.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use display interface to display aggregate interface information.

If bridge-aggregation is not specified, this command displays information about all interfaces.

If bridge-aggregation is specified without any interface number specified, this command displays information about all aggregate interfaces.

If bridge-aggregation interface-number is specified, this command displays information about the specified aggregate interface.

Examples

# Display information about Layer 2 aggregate interface Bridge-Aggregation 1.

<Sysname> display interface bridge-aggregation 1
 Bridge-Aggregation1 current state: DOWN
 IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 000f-e207-f2e0
 Description: Bridge-Aggregation1 Interface
 Unknown-speed mode, unknown-duplex mode
 Link speed type is autonegotiation, link duplex type is autonegotiation
 PVID: 1
 Port link-type: access
  Tagged   VLAN ID : none
  Untagged VLAN ID : 1
Port priority: 0 
 Last clearing of counters:  Never
 Last 300 seconds input:  0 packets/sec 0 bytes/sec    -%
 Last 300 seconds output:  0 packets/sec 0 bytes/sec    -%
 Input (total):  0 packets, 0 bytes
          0 unicasts, 0 broadcasts, 0 multicasts
 Input (normal):  0 packets, 0 bytes
          0 unicasts, 0 broadcasts, 0 multicasts
 Input:  0 input errors, 0 runts, 0 giants, 0 throttles
          0 CRC, 0 frame, 0 overruns, 0 aborts
          0 ignored, 0 parity errors
 Output (total): 0 packets, 0 bytes
          0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
 Output (normal): 0 packets, 0 bytes
          0 unicasts, 0 broadcasts, 0 multicasts, 0 pauses
 Output: 0 output errors, 0 underruns, 0 buffer failures
          0 aborts, 0 deferred, 0 collisions, 0 late collisions
          0 lost carrier, 0 no carrier

# Display brief information about Layer 2 aggregate interface Bridge-Aggregation 1.

<Sysname> display interface bridge-aggregation 1 brief
The brief information of interface(s) under bridge mode:
Link: ADM - administratively down; Stby - standby
Speed or Duplex: (a)/A - auto; H - half; F - full
Type: A - access; T - trunk; H - hybrid
Interface            Link Speed   Duplex Type PVID Description
BAGG1                DOWN auto    A      A    1

Table 14: Command output

Field

Description

Bridge-Aggregation1 current state

The Layer 2 interface status:

  • DOWN ( Administratively )—The interface is administratively shut down with the shutdown command.

  • DOWN—The interface is administratively up but physically down (possibly because no physical link is present or the link is faulty).

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

Unknown-speed mode, unknown-duplex mode

The interface speed and duplex mode are unknown.

PVID

Port default VLAN ID (PVID).

Last clearing of counters

Time when the reset counters interface command was last used to clear the interface statistics.

Never indicates the reset counters interface command has never been used on the interface since the device’s startup.

Last 300 seconds input/output

Average input/output rate over the last 300 seconds.

Input/Output (total)

Statistics of all packets received/sent on the interface.

Input/Output (normal)

Statistics of all normal packets received/sent on the interface.

The brief information of interface(s) under bridge mode

Brief information about Layer 2 interfaces.

Link: ADM - administratively down; Stby - standby

Link status:

  • ADM—The interface has been administratively shut down. To recover its physical layer state, perform the undo shutdown command.

  • Stby—The interface is operating as a backup interface.

Speed or Duplex: (a)/A - auto; H - half; F - full

If the speed of an interface is automatically negotiated, its speed attribute includes the auto negotiation flag, letter a in parentheses.

If the duplex mode of an interface is automatically negotiated, its duplex mode attribute includes the auto negotiation flag, letter a in parentheses or a capital A. Letter H indicates the half duplex mode, and letter F indicates the full duplex mode.

Type: A - access; T - trunk; H - hybrid

Link type options for Ethernet interfaces.

Interface

Abbreviated interface name.

Link

Physical link state of the interface.

Speed

Interface speed, in bps.