display interface brief

Function

The display interface brief command displays brief information about all Ethernet interfaces on a device.

Format

display interface interface-type1 brief

display interface interface-type1 brief main

Parameters

Parameter	Description	Value
interface-type1	Displays brief information about the specified main interface.	-
main	Displays brief information about the main interface. If you do not specify main in the command, the command displays brief information about all Ethernet interfaces and sub-interfaces.	-

Parameter

Description

Value

interface-type1

Displays brief information about the specified main interface.

main

Displays brief information about the main interface.

If you do not specify main in the command, the command displays brief information about all Ethernet interfaces and sub-interfaces.

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
interface-mgr	read

Usage Guidelines

Usage Scenario

To monitor Ethernet interface status or locate an Ethernet interface fault, run the display interface brief command to view the status and statistics of all Ethernet interfaces.

Follow-up Procedure

To clear the displayed statistics of Ethernet interfaces, run the reset counters interface command.

Example

The actual command output varies according to the device. The command output here is only an example.

# Display brief information about all Ethernet interfaces on the device.

<HUAWEI> display interface ethernet brief
PHY: Physical
*down: administratively down
^down: standby
(l): loopback
(b): BFD down
(d): Dampening Suppressed
(p): port alarm down
InUti/OutUti: input utility/output utility
Interface                   PHY   Auto-Neg Duplex Bandwidth  InUti OutUti Trunk
GigabitEthernet0/1/0        down  enable   full       1000M     0.04%     0.10%    --
GigabitEthernet0/1/1        down  enable   full       1000M     0%     0%    --
GigabitEthernet0/1/2        down  enable   full       1000M     0%     0%    --
GigabitEthernet0/1/3        down  enable   full       1000M     0%     0%    --
GigabitEthernet0/1/4        down  enable   full       1000M     0%     0%    --
GigabitEthernet0/1/4.1      down  enable   full       1000M     0%     0%    --

# Display brief information about all Ethernet main interfaces on the device.

<HUAWEI> display interface ethernet brief main
PHY: Physical
*down: administratively down
^down: standby
(l): loopback
(b): BFD down
(d): Dampening Suppressed
(p): port alarm down
InUti/OutUti: input utility/output utility
Interface                   PHY   Auto-Neg Duplex Bandwidth  InUti OutUti Trunk
GigabitEthernet0/1/0        down  enable   full       1000M     0%     0%    --
GigabitEthernet0/1/1        down  enable   full       1000M     0%     0%    --
GigabitEthernet0/1/2        down  enable   full       1000M     0%     0%    --
GigabitEthernet0/1/3        down  enable   full       1000M     0%     0%    --
GigabitEthernet0/1/4        down  enable   full       1000M     0%     0%    --

**Table 1** Description of the **display interface brief** command output
Item	Description
Interface	Interface type and interface number. All interfaces are displayed in alphabetic order.
PHY	Physical status of the interface. up: The physical layer of this interface is working properly. down: The physical layer of this interface becomes faulty. *down: Administratively Down. The administrator has run the shutdown command on this interface. ^down: The interface is a backup interface. (l): loopback: This interface is enabled with the loopback function. (b): BFD down: The physical layer of the interface is in the bidirectional forwarding detection (BFD) Down state. (d): Dampening Suppressed, the interface enters the flapping suppression state. (p): port alarm down, the interface goes Down physical due to an alarm, such as a CRC alarm.
Auto-Neg	Whether auto-negotiation is enabled: enable. disable.
Duplex	Duplex mode of the interface: full. half.
InUti	Average inbound bandwidth usage of this interface in the last 300 seconds. Average inbound bandwidth usage in the last 300 seconds = Average inbound rate in the last 300 seconds/Interface bandwidth. When the average inbound bandwidth usage is lower than 0.01% and this interface is receiving traffic, value 0.01% is displayed. When the interface bandwidth becomes lower, bandwidth usage may become 100% because adjusting the traffic volume is delayed.
OutUti	Average outbound bandwidth usage in the last 300 seconds. Average outbound bandwidth usage in the last 300 seconds = Average outbound rate in the last 300 seconds/Interface bandwidth. When the average outbound bandwidth usage is lower than 0.01% and this interface is sending traffic, value 0.01% is displayed. When the interface bandwidth becomes lower, bandwidth usage may become 100% because adjusting the traffic volume is delayed.
Trunk	Trunk ID of the interface. -- indicates that the interface is not added to any trunk.
Bandwidth	Bandwidth of the interface.